This is a test ticket #2
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ghost
assigned 
This was referenced Apr 26, 2013
Closed
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Author: anonymous |
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Author: ahu ahu@ds9a.nl |
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Author: ahu ahu@ds9a.nl |
rubenk
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to rubenk/pdns
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Mar 2, 2015
$ ./pdns/zone2lmdb --zone=./regression-tests.recursor/configs/10.0.3.10/example.net.zone
ASAN:SIGSEGV
=================================================================
==25526==ERROR: AddressSanitizer: SEGV on unknown address 0x00000000000c
(pc 0x7fe8b57a4d50 bp 0x7ffedb062f90 sp 0x7ffedb061d58 T0)
#0 0x7fe8b57a4d4f (/lib64/liblmdb.so.0.0.0+0x4d4f)
PowerDNS#1 0x7fe8b6c4c1aa in emitData(std::__cxx11::basic_string<char,
std::char_traits<char>, std::allocator<char> >, ZoneParserTNG&)
/home/ruben/src/pdns/pdns/zone2lmdb.cc:99
PowerDNS#2 0x7fe8b6c4f301 in main /home/ruben/src/pdns/pdns/zone2lmdb.cc:295
PowerDNS#3 0x7fe8b493b83f in __libc_start_main (/lib64/libc.so.6+0x2083f)
PowerDNS#4 0x7fe8b6b6ef88 in _start
(/home/ruben/src/pdns/pdns/zone2lmdb+0x27f88)
AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV ??:0 ??
==25526==ABORTING
rubenk
added a commit
to rubenk/pdns
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this issue
Mar 3, 2015
$ ./pdns/zone2lmdb --zone=./regression-tests.recursor/configs/10.0.3.10/example.net.zone
ASAN:SIGSEGV
=================================================================
==25526==ERROR: AddressSanitizer: SEGV on unknown address 0x00000000000c
(pc 0x7fe8b57a4d50 bp 0x7ffedb062f90 sp 0x7ffedb061d58 T0)
#0 0x7fe8b57a4d4f (/lib64/liblmdb.so.0.0.0+0x4d4f)
PowerDNS#1 0x7fe8b6c4c1aa in emitData(std::__cxx11::basic_string<char,
std::char_traits<char>, std::allocator<char> >, ZoneParserTNG&)
/home/ruben/src/pdns/pdns/zone2lmdb.cc:99
PowerDNS#2 0x7fe8b6c4f301 in main /home/ruben/src/pdns/pdns/zone2lmdb.cc:295
PowerDNS#3 0x7fe8b493b83f in __libc_start_main (/lib64/libc.so.6+0x2083f)
PowerDNS#4 0x7fe8b6b6ef88 in _start
(/home/ruben/src/pdns/pdns/zone2lmdb+0x27f88)
AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV ??:0 ??
==25526==ABORTING
(cherry picked from commit 372579c)
mind04
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Mar 11, 2015
Check for luajit before checking for lua
Whissi
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Jan 5, 2016
7 tasks
jsoref
referenced
this issue
in jsoref/pdns
May 17, 2020
Reported by UBSan:
sillyrecords.cc:301:42: runtime error: signed integer overflow: 2031844648 - -2147483648 cannot be represented in type 'int'
#0 0x55ab56ff5fbd in LOCRecordContent::getZoneRepresentation(bool) const /home/travis/build/rgacogne/pdns/pdns/recursordist/pdns-recursor-0.0.0.0.HEAD.ge217873f32.dirty/sillyrecords.cc:301:42
#1 0x55ab571da021 in test_dnsrecords_cc::test_record_types::test_method() /home/travis/build/rgacogne/pdns/pdns/recursordist/pdns-recursor-0.0.0.0.HEAD.ge217873f32.dirty/test-dnsrecords_cc.cc:232:11
#2 0x55ab571c9a4a in test_dnsrecords_cc::test_record_types_invoker() /home/travis/build/rgacogne/pdns/pdns/recursordist/pdns-recursor-0.0.0.0.HEAD.ge217873f32.dirty/test-dnsrecords_cc.cc:42:1
#3 0x55ab57136125 in boost::unit_test::ut_detail::callback0_impl_t<boost::unit_test::ut_detail::unused, void (*)()>::invoke() /usr/include/boost/test/utils/callback.hpp:89:46
#4 0x2b0b90cfa1f0 (/usr/lib/x86_64-linux-gnu/libboost_unit_test_framework.so.1.54.0+0x681f0)
#5 0x2b0b90cd5545 in boost::execution_monitor::catch_signals(boost::unit_test::callback0<int> const&) (/usr/lib/x86_64-linux-gnu/libboost_unit_test_framework.so.1.54.0+0x43545)
#6 0x2b0b90cd5d82 in boost::execution_monitor::execute(boost::unit_test::callback0<int> const&) (/usr/lib/x86_64-linux-gnu/libboost_unit_test_framework.so.1.54.0+0x43d82)
#7 0x2b0b90cfa2f1 in boost::unit_test::unit_test_monitor_t::execute_and_translate(boost::unit_test::test_case const&) (/usr/lib/x86_64-linux-gnu/libboost_unit_test_framework.so.1.54.0+0x682f1)
#8 0x2b0b90ce3f93 in boost::unit_test::framework_impl::visit(boost::unit_test::test_case const&) (/usr/lib/x86_64-linux-gnu/libboost_unit_test_framework.so.1.54.0+0x51f93)
#9 0x2b0b90d12d22 in boost::unit_test::traverse_test_tree(boost::unit_test::test_suite const&, boost::unit_test::test_tree_visitor&) (/usr/lib/x86_64-linux-gnu/libboost_unit_test_framework.so.1.54.0+0x80d22)
#10 0x2b0b90d12d22 in boost::unit_test::traverse_test_tree(boost::unit_test::test_suite const&, boost::unit_test::test_tree_visitor&) (/usr/lib/x86_64-linux-gnu/libboost_unit_test_framework.so.1.54.0+0x80d22)
#11 0x2b0b90cdf4b9 in boost::unit_test::framework::run(unsigned long, bool) (/usr/lib/x86_64-linux-gnu/libboost_unit_test_framework.so.1.54.0+0x4d4b9)
#12 0x2b0b90cf7ed3 in boost::unit_test::unit_test_main(bool (*)(), int, char**) (/usr/lib/x86_64-linux-gnu/libboost_unit_test_framework.so.1.54.0+0x65ed3)
#13 0x2b0b92d59f44 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21f44)
#14 0x55ab56b37961 in _start (/home/travis/build/rgacogne/pdns/pdns/recursordist/pdns-recursor-0.0.0.0.HEAD.ge217873f32.dirty/testrunner+0x1bc3961)
jsoref
referenced
this issue
in jsoref/pdns
May 17, 2020
Reported by UBSan: [2020-02-28 12:21:21] pdns_recursor.cc:1841:31: runtime error: -276679 is outside the range of representable values of type 'unsigned long' [2020-02-28 12:21:21] #0 0x5610bb76af48 in startDoResolve(void*) /home/travis/build/rgacogne/pdns/pdns/recursordist/pdns-recursor-0.0.0.0.HEAD.g5d6e6b9f95.dirty/pdns_recursor.cc:1841:31 [2020-02-28 12:21:21] #1 0x5610bb7d60ac in MTasker<PacketID, std::string>::makeThread(void (*)(void*), void*)::{lambda()#1}::operator()() const /home/travis/build/rgacogne/pdns/pdns/recursordist/pdns-recursor-0.0.0.0.HEAD.g5d6e6b9f95.dirty/./mtasker.cc:284:7 [2020-02-28 12:21:21] #2 0x5610bb6bae9d in boost::function0<void>::operator()() const /usr/include/boost/function/function_template.hpp:766:14 [2020-02-28 12:21:21] #3 0x5610bb6ba21b in threadWrapper(long) /home/travis/build/rgacogne/pdns/pdns/recursordist/pdns-recursor-0.0.0.0.HEAD.g5d6e6b9f95.dirty/./mtasker_fcontext.cc:144:9 [2020-02-28 12:21:21] #4 0x7f29cb06d70d in make_fcontext (/usr/lib/x86_64-linux-gnu/libboost_context.so.1.54.0+0x70d)
Habbie
pushed a commit
that referenced
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Dec 17, 2020
Reported by UBSan:
sillyrecords.cc:301:42: runtime error: signed integer overflow: 2031844648 - -2147483648 cannot be represented in type 'int'
#0 0x55ab56ff5fbd in LOCRecordContent::getZoneRepresentation(bool) const /home/travis/build/rgacogne/pdns/pdns/recursordist/pdns-recursor-0.0.0.0.HEAD.ge217873f32.dirty/sillyrecords.cc:301:42
#1 0x55ab571da021 in test_dnsrecords_cc::test_record_types::test_method() /home/travis/build/rgacogne/pdns/pdns/recursordist/pdns-recursor-0.0.0.0.HEAD.ge217873f32.dirty/test-dnsrecords_cc.cc:232:11
#2 0x55ab571c9a4a in test_dnsrecords_cc::test_record_types_invoker() /home/travis/build/rgacogne/pdns/pdns/recursordist/pdns-recursor-0.0.0.0.HEAD.ge217873f32.dirty/test-dnsrecords_cc.cc:42:1
#3 0x55ab57136125 in boost::unit_test::ut_detail::callback0_impl_t<boost::unit_test::ut_detail::unused, void (*)()>::invoke() /usr/include/boost/test/utils/callback.hpp:89:46
#4 0x2b0b90cfa1f0 (/usr/lib/x86_64-linux-gnu/libboost_unit_test_framework.so.1.54.0+0x681f0)
#5 0x2b0b90cd5545 in boost::execution_monitor::catch_signals(boost::unit_test::callback0<int> const&) (/usr/lib/x86_64-linux-gnu/libboost_unit_test_framework.so.1.54.0+0x43545)
#6 0x2b0b90cd5d82 in boost::execution_monitor::execute(boost::unit_test::callback0<int> const&) (/usr/lib/x86_64-linux-gnu/libboost_unit_test_framework.so.1.54.0+0x43d82)
#7 0x2b0b90cfa2f1 in boost::unit_test::unit_test_monitor_t::execute_and_translate(boost::unit_test::test_case const&) (/usr/lib/x86_64-linux-gnu/libboost_unit_test_framework.so.1.54.0+0x682f1)
#8 0x2b0b90ce3f93 in boost::unit_test::framework_impl::visit(boost::unit_test::test_case const&) (/usr/lib/x86_64-linux-gnu/libboost_unit_test_framework.so.1.54.0+0x51f93)
#9 0x2b0b90d12d22 in boost::unit_test::traverse_test_tree(boost::unit_test::test_suite const&, boost::unit_test::test_tree_visitor&) (/usr/lib/x86_64-linux-gnu/libboost_unit_test_framework.so.1.54.0+0x80d22)
#10 0x2b0b90d12d22 in boost::unit_test::traverse_test_tree(boost::unit_test::test_suite const&, boost::unit_test::test_tree_visitor&) (/usr/lib/x86_64-linux-gnu/libboost_unit_test_framework.so.1.54.0+0x80d22)
#11 0x2b0b90cdf4b9 in boost::unit_test::framework::run(unsigned long, bool) (/usr/lib/x86_64-linux-gnu/libboost_unit_test_framework.so.1.54.0+0x4d4b9)
#12 0x2b0b90cf7ed3 in boost::unit_test::unit_test_main(bool (*)(), int, char**) (/usr/lib/x86_64-linux-gnu/libboost_unit_test_framework.so.1.54.0+0x65ed3)
#13 0x2b0b92d59f44 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21f44)
#14 0x55ab56b37961 in _start (/home/travis/build/rgacogne/pdns/pdns/recursordist/pdns-recursor-0.0.0.0.HEAD.ge217873f32.dirty/testrunner+0x1bc3961)
(cherry picked from commit 98576e1)
Habbie
pushed a commit
that referenced
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Dec 17, 2020
Reported by UBSan: [2020-02-28 12:21:21] pdns_recursor.cc:1841:31: runtime error: -276679 is outside the range of representable values of type 'unsigned long' [2020-02-28 12:21:21] #0 0x5610bb76af48 in startDoResolve(void*) /home/travis/build/rgacogne/pdns/pdns/recursordist/pdns-recursor-0.0.0.0.HEAD.g5d6e6b9f95.dirty/pdns_recursor.cc:1841:31 [2020-02-28 12:21:21] #1 0x5610bb7d60ac in MTasker<PacketID, std::string>::makeThread(void (*)(void*), void*)::{lambda()#1}::operator()() const /home/travis/build/rgacogne/pdns/pdns/recursordist/pdns-recursor-0.0.0.0.HEAD.g5d6e6b9f95.dirty/./mtasker.cc:284:7 [2020-02-28 12:21:21] #2 0x5610bb6bae9d in boost::function0<void>::operator()() const /usr/include/boost/function/function_template.hpp:766:14 [2020-02-28 12:21:21] #3 0x5610bb6ba21b in threadWrapper(long) /home/travis/build/rgacogne/pdns/pdns/recursordist/pdns-recursor-0.0.0.0.HEAD.g5d6e6b9f95.dirty/./mtasker_fcontext.cc:144:9 [2020-02-28 12:21:21] #4 0x7f29cb06d70d in make_fcontext (/usr/lib/x86_64-linux-gnu/libboost_context.so.1.54.0+0x70d) (cherry picked from commit b7d61cb)
Habbie
added a commit
that referenced
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Jan 7, 2021
==8618==ERROR: AddressSanitizer: stack-use-after-scope on address 0x7ffd8c5a1420 at pc 0x55bee0a5d899 bp 0x7ffd8c5a0710 sp 0x7ffd8c5a0708
READ of size 1 at 0x7ffd8c5a1420 thread T0
#0 0x55bee0a5d898 in YAML::Node::begin() const /usr/include/yaml-cpp/node/impl.h:284:8
#1 0x55bee0a3f2f0 in GeoIPBackend::initialize() /opt/project/modules/geoipbackend/geoipbackend.cc:163:27
#2 0x55bee0a3d0d3 in GeoIPBackend::GeoIPBackend(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) /opt/project/modules/geoipbackend/geoipbackend.cc:86:5
#3 0x55bee0a784eb in GeoIPFactory::make(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) /opt/project/modules/geoipbackend/geoipbackend.cc:1008:16
#4 0x55bedff6cb18 in BackendMakerClass::all(bool) /opt/project/pdns/dnsbackend.cc:200:46
#5 0x55bee07d3abe in UeberBackend::UeberBackend(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) /opt/project/pdns/ueberbackend.cc:479:28
#6 0x55bee060579c in PacketHandler::PacketHandler() /opt/project/pdns/packethandler.cc:65:32
#7 0x55bedfee1748 in std::unique_ptr<PacketHandler, std::default_delete<PacketHandler> > make_unique<PacketHandler>() /opt/project/pdns/./misc.hh:571:35
#8 0x55bee079376d in TCPNameserver::go() /opt/project/pdns/tcpreceiver.cc:85:9
#9 0x55bedfecf7b7 in mainthread() /opt/project/pdns/common_startup.cc:656:7
#10 0x55bee0655f67 in main /opt/project/pdns/receiver.cc:654:5
#11 0x7f374b4b809a in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2409a)
#12 0x55bedfc9a989 in _start (/opt/pdns-auth/sbin/pdns_server+0x2736989)
Address 0x7ffd8c5a1420 is located in stack of thread T0 at offset 3040 in frame
#0 0x55bee0a3d5ef in GeoIPBackend::initialize() /opt/project/modules/geoipbackend/geoipbackend.cc:115
Habbie
added a commit
that referenced
this issue
Jan 12, 2021
==8618==ERROR: AddressSanitizer: stack-use-after-scope on address 0x7ffd8c5a1420 at pc 0x55bee0a5d899 bp 0x7ffd8c5a0710 sp 0x7ffd8c5a0708
READ of size 1 at 0x7ffd8c5a1420 thread T0
#0 0x55bee0a5d898 in YAML::Node::begin() const /usr/include/yaml-cpp/node/impl.h:284:8
#1 0x55bee0a3f2f0 in GeoIPBackend::initialize() /opt/project/modules/geoipbackend/geoipbackend.cc:163:27
#2 0x55bee0a3d0d3 in GeoIPBackend::GeoIPBackend(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) /opt/project/modules/geoipbackend/geoipbackend.cc:86:5
#3 0x55bee0a784eb in GeoIPFactory::make(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) /opt/project/modules/geoipbackend/geoipbackend.cc:1008:16
#4 0x55bedff6cb18 in BackendMakerClass::all(bool) /opt/project/pdns/dnsbackend.cc:200:46
#5 0x55bee07d3abe in UeberBackend::UeberBackend(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) /opt/project/pdns/ueberbackend.cc:479:28
#6 0x55bee060579c in PacketHandler::PacketHandler() /opt/project/pdns/packethandler.cc:65:32
#7 0x55bedfee1748 in std::unique_ptr<PacketHandler, std::default_delete<PacketHandler> > make_unique<PacketHandler>() /opt/project/pdns/./misc.hh:571:35
#8 0x55bee079376d in TCPNameserver::go() /opt/project/pdns/tcpreceiver.cc:85:9
#9 0x55bedfecf7b7 in mainthread() /opt/project/pdns/common_startup.cc:656:7
#10 0x55bee0655f67 in main /opt/project/pdns/receiver.cc:654:5
#11 0x7f374b4b809a in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2409a)
#12 0x55bedfc9a989 in _start (/opt/pdns-auth/sbin/pdns_server+0x2736989)
Address 0x7ffd8c5a1420 is located in stack of thread T0 at offset 3040 in frame
#0 0x55bee0a3d5ef in GeoIPBackend::initialize() /opt/project/modules/geoipbackend/geoipbackend.cc:115
(cherry picked from commit 1a2d029)
chbruyand
referenced
this issue
in chbruyand/pdns
Mar 9, 2021
Reported by UBSan:
sillyrecords.cc:301:42: runtime error: signed integer overflow: 2031844648 - -2147483648 cannot be represented in type 'int'
#0 0x55ab56ff5fbd in LOCRecordContent::getZoneRepresentation(bool) const /home/travis/build/rgacogne/pdns/pdns/recursordist/pdns-recursor-0.0.0.0.HEAD.ge217873f32.dirty/sillyrecords.cc:301:42
#1 0x55ab571da021 in test_dnsrecords_cc::test_record_types::test_method() /home/travis/build/rgacogne/pdns/pdns/recursordist/pdns-recursor-0.0.0.0.HEAD.ge217873f32.dirty/test-dnsrecords_cc.cc:232:11
#2 0x55ab571c9a4a in test_dnsrecords_cc::test_record_types_invoker() /home/travis/build/rgacogne/pdns/pdns/recursordist/pdns-recursor-0.0.0.0.HEAD.ge217873f32.dirty/test-dnsrecords_cc.cc:42:1
#3 0x55ab57136125 in boost::unit_test::ut_detail::callback0_impl_t<boost::unit_test::ut_detail::unused, void (*)()>::invoke() /usr/include/boost/test/utils/callback.hpp:89:46
#4 0x2b0b90cfa1f0 (/usr/lib/x86_64-linux-gnu/libboost_unit_test_framework.so.1.54.0+0x681f0)
PowerDNS#5 0x2b0b90cd5545 in boost::execution_monitor::catch_signals(boost::unit_test::callback0<int> const&) (/usr/lib/x86_64-linux-gnu/libboost_unit_test_framework.so.1.54.0+0x43545)
PowerDNS#6 0x2b0b90cd5d82 in boost::execution_monitor::execute(boost::unit_test::callback0<int> const&) (/usr/lib/x86_64-linux-gnu/libboost_unit_test_framework.so.1.54.0+0x43d82)
PowerDNS#7 0x2b0b90cfa2f1 in boost::unit_test::unit_test_monitor_t::execute_and_translate(boost::unit_test::test_case const&) (/usr/lib/x86_64-linux-gnu/libboost_unit_test_framework.so.1.54.0+0x682f1)
PowerDNS#8 0x2b0b90ce3f93 in boost::unit_test::framework_impl::visit(boost::unit_test::test_case const&) (/usr/lib/x86_64-linux-gnu/libboost_unit_test_framework.so.1.54.0+0x51f93)
PowerDNS#9 0x2b0b90d12d22 in boost::unit_test::traverse_test_tree(boost::unit_test::test_suite const&, boost::unit_test::test_tree_visitor&) (/usr/lib/x86_64-linux-gnu/libboost_unit_test_framework.so.1.54.0+0x80d22)
PowerDNS#10 0x2b0b90d12d22 in boost::unit_test::traverse_test_tree(boost::unit_test::test_suite const&, boost::unit_test::test_tree_visitor&) (/usr/lib/x86_64-linux-gnu/libboost_unit_test_framework.so.1.54.0+0x80d22)
PowerDNS#11 0x2b0b90cdf4b9 in boost::unit_test::framework::run(unsigned long, bool) (/usr/lib/x86_64-linux-gnu/libboost_unit_test_framework.so.1.54.0+0x4d4b9)
PowerDNS#12 0x2b0b90cf7ed3 in boost::unit_test::unit_test_main(bool (*)(), int, char**) (/usr/lib/x86_64-linux-gnu/libboost_unit_test_framework.so.1.54.0+0x65ed3)
PowerDNS#13 0x2b0b92d59f44 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21f44)
PowerDNS#14 0x55ab56b37961 in _start (/home/travis/build/rgacogne/pdns/pdns/recursordist/pdns-recursor-0.0.0.0.HEAD.ge217873f32.dirty/testrunner+0x1bc3961)
(cherry picked from commit 98576e1)
chbruyand
referenced
this issue
in chbruyand/pdns
Mar 9, 2021
Reported by UBSan: [2020-02-28 12:21:21] pdns_recursor.cc:1841:31: runtime error: -276679 is outside the range of representable values of type 'unsigned long' [2020-02-28 12:21:21] #0 0x5610bb76af48 in startDoResolve(void*) /home/travis/build/rgacogne/pdns/pdns/recursordist/pdns-recursor-0.0.0.0.HEAD.g5d6e6b9f95.dirty/pdns_recursor.cc:1841:31 [2020-02-28 12:21:21] #1 0x5610bb7d60ac in MTasker<PacketID, std::string>::makeThread(void (*)(void*), void*)::{lambda()#1}::operator()() const /home/travis/build/rgacogne/pdns/pdns/recursordist/pdns-recursor-0.0.0.0.HEAD.g5d6e6b9f95.dirty/./mtasker.cc:284:7 [2020-02-28 12:21:21] #2 0x5610bb6bae9d in boost::function0<void>::operator()() const /usr/include/boost/function/function_template.hpp:766:14 [2020-02-28 12:21:21] #3 0x5610bb6ba21b in threadWrapper(long) /home/travis/build/rgacogne/pdns/pdns/recursordist/pdns-recursor-0.0.0.0.HEAD.g5d6e6b9f95.dirty/./mtasker_fcontext.cc:144:9 [2020-02-28 12:21:21] #4 0x7f29cb06d70d in make_fcontext (/usr/lib/x86_64-linux-gnu/libboost_context.so.1.54.0+0x70d) (cherry picked from commit b7d61cb)
chbruyand
referenced
this issue
in chbruyand/pdns
Mar 9, 2021
==8618==ERROR: AddressSanitizer: stack-use-after-scope on address 0x7ffd8c5a1420 at pc 0x55bee0a5d899 bp 0x7ffd8c5a0710 sp 0x7ffd8c5a0708
READ of size 1 at 0x7ffd8c5a1420 thread T0
#0 0x55bee0a5d898 in YAML::Node::begin() const /usr/include/yaml-cpp/node/impl.h:284:8
#1 0x55bee0a3f2f0 in GeoIPBackend::initialize() /opt/project/modules/geoipbackend/geoipbackend.cc:163:27
#2 0x55bee0a3d0d3 in GeoIPBackend::GeoIPBackend(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) /opt/project/modules/geoipbackend/geoipbackend.cc:86:5
#3 0x55bee0a784eb in GeoIPFactory::make(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) /opt/project/modules/geoipbackend/geoipbackend.cc:1008:16
#4 0x55bedff6cb18 in BackendMakerClass::all(bool) /opt/project/pdns/dnsbackend.cc:200:46
PowerDNS#5 0x55bee07d3abe in UeberBackend::UeberBackend(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) /opt/project/pdns/ueberbackend.cc:479:28
PowerDNS#6 0x55bee060579c in PacketHandler::PacketHandler() /opt/project/pdns/packethandler.cc:65:32
PowerDNS#7 0x55bedfee1748 in std::unique_ptr<PacketHandler, std::default_delete<PacketHandler> > make_unique<PacketHandler>() /opt/project/pdns/./misc.hh:571:35
PowerDNS#8 0x55bee079376d in TCPNameserver::go() /opt/project/pdns/tcpreceiver.cc:85:9
PowerDNS#9 0x55bedfecf7b7 in mainthread() /opt/project/pdns/common_startup.cc:656:7
PowerDNS#10 0x55bee0655f67 in main /opt/project/pdns/receiver.cc:654:5
PowerDNS#11 0x7f374b4b809a in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2409a)
PowerDNS#12 0x55bedfc9a989 in _start (/opt/pdns-auth/sbin/pdns_server+0x2736989)
Address 0x7ffd8c5a1420 is located in stack of thread T0 at offset 3040 in frame
#0 0x55bee0a3d5ef in GeoIPBackend::initialize() /opt/project/modules/geoipbackend/geoipbackend.cc:115
rgacogne
added a commit
that referenced
this issue
Apr 22, 2021
So that there is no race when these vaues are read by the SNMP or
web threads and updated by the health check thread at the same time.
Reported by Thread Sanitizer:
WARNING: ThreadSanitizer: data race (pid=11167)
Write of size 8 at 0x7b7400002558 by thread T18:
#0 healthChecksThread() /opt/project/pdns/dnsdistdist/dnsdist.cc:1712:22 (dnsdist+0xf2a4a2)
#1 void std::__invoke_impl<void, void (*)()>(std::__invoke_other, void (*&&)()) /usr/bin/../lib/gcc/x86_64-linux-gnu/8/../../../../include/c++/8/bits/invoke.h:60:14 (dnsdist+0xf40ea2)
#2 std::__invoke_result<void (*)()>::type std::__invoke<void (*)()>(void (*&&)()) /usr/bin/../lib/gcc/x86_64-linux-gnu/8/../../../../include/c++/8/bits/invoke.h:95:14 (dnsdist+0xf40e0d)
#3 decltype(std::__invoke(_S_declval<0ul>())) std::thread::_Invoker<std::tuple<void (*)()> >::_M_invoke<0ul>(std::_Index_tuple<0ul>) /usr/bin/../lib/gcc/x86_64-linux-gnu/8/../../../../include/c++/8/thread:244:13 (dnsdist+0xf40dd5)
#4 std::thread::_Invoker<std::tuple<void (*)()> >::operator()() /usr/bin/../lib/gcc/x86_64-linux-gnu/8/../../../../include/c++/8/thread:253:11 (dnsdist+0xf40d95)
#5 std::thread::_State_impl<std::thread::_Invoker<std::tuple<void (*)()> > >::_M_run() /usr/bin/../lib/gcc/x86_64-linux-gnu/8/../../../../include/c++/8/thread:196:13 (dnsdist+0xf40c29)
#6 <null> <null> (libstdc++.so.6+0xbbb2e)
Previous read of size 8 at 0x7b7400002558 by thread T2:
#0 backendStatTable_handler(netsnmp_mib_handler_s*, netsnmp_handler_registration_s*, netsnmp_agent_request_info_s*, netsnmp_request_info_s*) /opt/project/pdns/dnsdistdist/dnsdist-snmp.cc:356:62 (dnsdist+0xeccf98)
#1 netsnmp_call_next_handler <null> (libnetsnmpagent.so.30+0x2a0cc)
#2 SNMPAgent::handleSNMPQueryCB(int, boost::any&) /opt/project/pdns/dnsdistdist/snmp-agent.cc:96:13 (dnsdist+0xfb0847)
#3 boost::detail::function::void_function_invoker2<void (*)(int, boost::any&), void, int, boost::any&>::invoke(boost::detail::function::function_buffer&, int, boost::any&) /usr/include/boost/function/function_template.hpp:118:11 (dnsdist+0x8937d8)
#4 boost::function2<void, int, boost::any&>::operator()(int, boost::any&) const /usr/include/boost/function/function_template.hpp:768:14 (dnsdist+0xf9d56c)
#5 EpollFDMultiplexer::run(timeval*, int) /opt/project/pdns/dnsdistdist/epollmplexer.cc:176:7 (dnsdist+0xfd041b)
#6 SNMPAgent::worker() /opt/project/pdns/dnsdistdist/snmp-agent.cc:141:24 (dnsdist+0xfb0b6f)
#7 void std::__invoke_impl<void, void (SNMPAgent::*)(), SNMPAgent*>(std::__invoke_memfun_deref, void (SNMPAgent::*&&)(), SNMPAgent*&&) /usr/bin/../lib/gcc/x86_64-linux-gnu/8/../../../../include/c++/8/bits/invoke.h:73:14 (dnsdist+0xf344c9)
#8 std::__invoke_result<void (SNMPAgent::*)(), SNMPAgent*>::type std::__invoke<void (SNMPAgent::*)(), SNMPAgent*>(void (SNMPAgent::*&&)(), SNMPAgent*&&) /usr/bin/../lib/gcc/x86_64-linux-gnu/8/../../../../include/c++/8/bits/invoke.h:95:14 (dnsdist+0xf343c1)
#9 decltype(std::__invoke(_S_declval<0ul>(), _S_declval<1ul>())) std::thread::_Invoker<std::tuple<void (SNMPAgent::*)(), SNMPAgent*> >::_M_invoke<0ul, 1ul>(std::_Index_tuple<0ul, 1ul>) /usr/bin/../lib/gcc/x86_64-linux-gnu/8/../../../../include/c++/8/thread:244:13 (dnsdist+0xf3436e)
#10 std::thread::_Invoker<std::tuple<void (SNMPAgent::*)(), SNMPAgent*> >::operator()() /usr/bin/../lib/gcc/x86_64-linux-gnu/8/../../../../include/c++/8/thread:253:11 (dnsdist+0xf34315)
#11 std::thread::_State_impl<std::thread::_Invoker<std::tuple<void (SNMPAgent::*)(), SNMPAgent*> > >::_M_run() /usr/bin/../lib/gcc/x86_64-linux-gnu/8/../../../../include/c++/8/thread:196:13 (dnsdist+0xf34079)
#12 <null> <null> (libstdc++.so.6+0xbbb2e)
omoerbeek
added a commit
that referenced
this issue
May 6, 2021
Constify response stats and histogram methods
rgacogne
added a commit
that referenced
this issue
May 25, 2021
Unless I'm mistaken, the report (below) is a false positive since
`std::atomic<T>::operator T` is equivalent to `load()` and
`std::atomic<T>::operator=` to `store()`, but perhaps I'm missing
something.
Note that I could not reproduce the issue using clang++ 11.1.0's
TSAN, only with the one from g++ 11.1.0.
```
==================
WARNING: ThreadSanitizer: data race (pid=11157)
Atomic read of size 8 at 0x7b7400002580 by thread T2:
#0 __tsan_atomic64_load <null> (dnsdist+0x7a6eb0)
#1 std::atomic<double>::load(std::memory_order) const /usr/bin/../lib/gcc/x86_64-linux-gnu/8/../../../../include/c++/8/atomic:250:2 (dnsdist+0x83c4da)
#2 pdns::stat_t_trait<double>::operator double() const /opt/project/pdns/dnsdistdist/./stat_t.hh:67:60 (dnsdist+0xd05b2e)
#3 backendStatTable_handler(netsnmp_mib_handler_s*, netsnmp_handler_registration_s*, netsnmp_agent_request_info_s*, netsnmp_request_info_s*) /opt/project/pdns/dnsdistdist/dnsdist-snmp.cc:356:54 (dnsdist+0xeceab8)
#4 netsnmp_call_next_handler <null> (libnetsnmpagent.so.30+0x2a0cc)
#5 SNMPAgent::handleSNMPQueryCB(int, boost::any&) /opt/project/pdns/dnsdistdist/snmp-agent.cc:96:13 (dnsdist+0xfb2417)
#6 boost::detail::function::void_function_invoker2<void (*)(int, boost::any&), void, int, boost::any&>::invoke(boost::detail::function::function_buffer&, int, boost::any&) /usr/include/boost/function/function_template.hpp:118:11 (dnsdist+0x8956e8)
#7 boost::function2<void, int, boost::any&>::operator()(int, boost::any&) const /usr/include/boost/function/function_template.hpp:768:14 (dnsdist+0xf9f13c)
#8 EpollFDMultiplexer::run(timeval*, int) /opt/project/pdns/dnsdistdist/epollmplexer.cc:176:7 (dnsdist+0xfd1feb)
#9 SNMPAgent::worker() /opt/project/pdns/dnsdistdist/snmp-agent.cc:141:24 (dnsdist+0xfb273f)
#10 void std::__invoke_impl<void, void (SNMPAgent::*)(), SNMPAgent*>(std::__invoke_memfun_deref, void (SNMPAgent::*&&)(), SNMPAgent*&&) /usr/bin/../lib/gcc/x86_64-linux-gnu/8/../../../../include/c++/8/bits/invoke.h:73:14 (dnsdist+0xf36079)
#11 std::__invoke_result<void (SNMPAgent::*)(), SNMPAgent*>::type std::__invoke<void (SNMPAgent::*)(), SNMPAgent*>(void (SNMPAgent::*&&)(), SNMPAgent*&&) /usr/bin/../lib/gcc/x86_64-linux-gnu/8/../../../../include/c++/8/bits/invoke.h:95:14 (dnsdist+0xf35f71)
#12 decltype(std::__invoke(_S_declval<0ul>(), _S_declval<1ul>())) std::thread::_Invoker<std::tuple<void (SNMPAgent::*)(), SNMPAgent*> >::_M_invoke<0ul, 1ul>(std::_Index_tuple<0ul, 1ul>) /usr/bin/../lib/gcc/x86_64-linux-gnu/8/../../../../include/c++/8/thread:244:13 (dnsdist+0xf35f1e)
#13 std::thread::_Invoker<std::tuple<void (SNMPAgent::*)(), SNMPAgent*> >::operator()() /usr/bin/../lib/gcc/x86_64-linux-gnu/8/../../../../include/c++/8/thread:253:11 (dnsdist+0xf35ec5)
#14 std::thread::_State_impl<std::thread::_Invoker<std::tuple<void (SNMPAgent::*)(), SNMPAgent*> > >::_M_run() /usr/bin/../lib/gcc/x86_64-linux-gnu/8/../../../../include/c++/8/thread:196:13 (dnsdist+0xf35c29)
#15 <null> <null> (libstdc++.so.6+0xbbb2e)
Previous write of size 8 at 0x7b7400002580 by thread T18:
[failed to restore the stack]
Location is heap block of size 2304 at 0x7b7400001e00 allocated by main thread:
#0 operator new(unsigned long, std::align_val_t) <null> (dnsdist+0x7e8c57)
#1 __gnu_cxx::new_allocator<std::_Sp_counted_ptr_inplace<DownstreamState, std::allocator<DownstreamState>, (__gnu_cxx::_Lock_policy)2> >::allocate(unsigned long, void const*) /usr/bin/../lib/gcc/x86_64-linux-gnu/8/../../../../include/c++/8/ext/new_allocator.h:108:31 (dnsdist+0xe6b4e2)
#2 std::allocator_traits<std::allocator<std::_Sp_counted_ptr_inplace<DownstreamState, std::allocator<DownstreamState>, (__gnu_cxx::_Lock_policy)2> > >::allocate(std::allocator<std::_Sp_counted_ptr_inplace<DownstreamState, std::allocator<DownstreamState>, (__gnu_cxx::_Lock_policy)2> >&, unsigned long) /usr/bin/../lib/gcc/x86_64-linux-gnu/8/../../../../include/c++/8/bits/alloc_traits.h:436:20 (dnsdist+0xe6b430)
#3 std::__allocated_ptr<std::allocator<std::_Sp_counted_ptr_inplace<DownstreamState, std::allocator<DownstreamState>, (__gnu_cxx::_Lock_policy)2> > > std::__allocate_guarded<std::allocator<std::_Sp_counted_ptr_inplace<DownstreamState, std::allocator<DownstreamState>, (__gnu_cxx::_Lock_policy)2> > >(std::allocator<std::_Sp_counted_ptr_inplace<DownstreamState, std::allocator<DownstreamState>, (__gnu_cxx::_Lock_policy)2> >&) /usr/bin/../lib/gcc/x86_64-linux-gnu/8/../../../../include/c++/8/bits/allocated_ptr.h:97:21 (dnsdist+0xe6b1d0)
#4 std::__shared_count<(__gnu_cxx::_Lock_policy)2>::__shared_count<DownstreamState, std::allocator<DownstreamState>, ComboAddress&, ComboAddress&, unsigned int&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, unsigned long&, bool>(DownstreamState*&, std::_Sp_alloc_shared_tag<std::allocator<DownstreamState> >, ComboAddress&, ComboAddress&, unsigned int&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, unsigned long&, bool&&) /usr/bin/../lib/gcc/x86_64-linux-gnu/8/../../../../include/c++/8/bits/shared_ptr_base.h:675:19 (dnsdist+0xe6fb0a)
#5 std::__shared_ptr<DownstreamState, (__gnu_cxx::_Lock_policy)2>::__shared_ptr<std::allocator<DownstreamState>, ComboAddress&, ComboAddress&, unsigned int&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, unsigned long&, bool>(std::_Sp_alloc_shared_tag<std::allocator<DownstreamState> >, ComboAddress&, ComboAddress&, unsigned int&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, unsigned long&, bool&&) /usr/bin/../lib/gcc/x86_64-linux-gnu/8/../../../../include/c++/8/bits/shared_ptr_base.h:1342:14 (dnsdist+0xe6fa7a)
#6 std::shared_ptr<DownstreamState>::shared_ptr<std::allocator<DownstreamState>, ComboAddress&, ComboAddress&, unsigned int&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, unsigned long&, bool>(std::_Sp_alloc_shared_tag<std::allocator<DownstreamState> >, ComboAddress&, ComboAddress&, unsigned int&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, unsigned long&, bool&&) /usr/bin/../lib/gcc/x86_64-linux-gnu/8/../../../../include/c++/8/bits/shared_ptr.h:359:4 (dnsdist+0xe6f99d)
#7 std::shared_ptr<DownstreamState> std::allocate_shared<DownstreamState, std::allocator<DownstreamState>, ComboAddress&, ComboAddress&, unsigned int&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, unsigned long&, bool>(std::allocator<DownstreamState> const&, ComboAddress&, ComboAddress&, unsigned int&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, unsigned long&, bool&&) /usr/bin/../lib/gcc/x86_64-linux-gnu/8/../../../../include/c++/8/bits/shared_ptr.h:705:14 (dnsdist+0xe6f8e0)
#8 std::shared_ptr<DownstreamState> std::make_shared<DownstreamState, ComboAddress&, ComboAddress&, unsigned int&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, unsigned long&, bool>(ComboAddress&, ComboAddress&, unsigned int&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, unsigned long&, bool&&) /usr/bin/../lib/gcc/x86_64-linux-gnu/8/../../../../include/c++/8/bits/shared_ptr.h:721:14 (dnsdist+0xe6a726)
#9 setupLuaConfig(LuaContext&, bool, bool)::$_2::operator()(boost::variant<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::unordered_map<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::variant<bool, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::vector<std::pair<int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, std::function<std::tuple<DNSName, unsigned short, unsigned short> (DNSName const&, unsigned short, unsigned short, dnsheader*)> >, std::hash<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::equal_to<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, boost::variant<bool, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::vector<std::pair<int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, std::function<std::tuple<DNSName, unsigned short, unsigned short> (DNSName const&, unsigned short, unsigned short, dnsheader*)> > > > > >, boost::optional<int>) const /opt/project/pdns/dnsdistdist/dnsdist-lua.cc:356:11 (dnsdist+0xdf9166)
#10 _ZN10LuaContext6BinderIRZL14setupLuaConfigRS_bbE3$_2RKN5boost7variantINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEJSt13unordered_mapISB_NS5_IbJSB_St6vectorISt4pairIiSB_ESaISF_EESt8functionIFSt5tupleIJ7DNSNamettEERKSK_ttP9dnsheaderEEEEESt4hashISB_ESt8equal_toISB_ESaISE_IKSB_SS_EEEEEEEclIJRKNS4_8optionalIiEEEEEDTcldtdefpT8functiondtdefpT5paramspclsr3stdE7forwardIT_Efp_EEEDpOS1A_ /opt/project/pdns/dnsdistdist/./ext/luawrapper/include/LuaContext.hpp:1846:20 (dnsdist+0xdf89af)
#11 _ZN10LuaContext6BinderIRNS0_IRZL14setupLuaConfigRS_bbE3$_2RKN5boost7variantINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEJSt13unordered_mapISB_NS5_IbJSB_St6vectorISt4pairIiSB_ESaISF_EESt8functionIFSt5tupleIJ7DNSNamettEERKSK_ttP9dnsheaderEEEEESt4hashISB_ESt8equal_toISB_ESaISE_IKSB_SS_EEEEEEEERKNS4_8optionalIiEEEclIJEEEDTcldtdefpT8functiondtdefpT5paramspclsr3stdE7forwardIT_Efp_EEEDpOS1C_ /opt/project/pdns/dnsdistdist/./ext/luawrapper/include/LuaContext.hpp:1846:20 (dnsdist+0xdf8917)
#12 std::shared_ptr<DownstreamState> LuaContext::readIntoFunction<std::shared_ptr<DownstreamState>, LuaContext::Binder<LuaContext::Binder<setupLuaConfig(LuaContext&, bool, bool)::$_2&, boost::variant<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::unordered_map<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::variant<bool, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::vector<std::pair<int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, std::function<std::tuple<DNSName, unsigned short, unsigned short> (DNSName const&, unsigned short, unsigned short, dnsheader*)> >, std::hash<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::equal_to<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, boost::variant<bool, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::vector<std::pair<int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, std::function<std::tuple<DNSName, unsigned short, unsigned short> (DNSName const&, unsigned short, unsigned short, dnsheader*)> > > > > > const&>&, boost::optional<int> const&>&>(lua_State*, LuaContext::tag<std::shared_ptr<DownstreamState> >, LuaContext::Binder<LuaContext::Binder<setupLuaConfig(LuaContext&, bool, bool)::$_2&, boost::variant<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::unordered_map<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::variant<bool, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::vector<std::pair<int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, std::function<std::tuple<DNSName, unsigned short, unsigned short> (DNSName const&, unsigned short, unsigned short, dnsheader*)> >, std::hash<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::equal_to<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, boost::variant<bool, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::vector<std::pair<int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, std::function<std::tuple<DNSName, unsigned short, unsigned short> (DNSName const&, unsigned short, unsigned short, dnsheader*)> > > > > > const&>&, boost::optional<int> const&>&, int) /opt/project/pdns/dnsdistdist/./ext/luawrapper/include/LuaContext.hpp:1766:16 (dnsdist+0xdf88be)
#13 std::enable_if<IsOptional<boost::optional<int> >::value, std::shared_ptr<DownstreamState> >::type LuaContext::readIntoFunction<std::shared_ptr<DownstreamState>, LuaContext::Binder<setupLuaConfig(LuaContext&, bool, bool)::$_2&, boost::variant<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::unordered_map<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::variant<bool, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::vector<std::pair<int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, std::function<std::tuple<DNSName, unsigned short, unsigned short> (DNSName const&, unsigned short, unsigned short, dnsheader*)> >, std::hash<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::equal_to<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, boost::variant<bool, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::vector<std::pair<int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, std::function<std::tuple<DNSName, unsigned short, unsigned short> (DNSName const&, unsigned short, unsigned short, dnsheader*)> > > > > > const&>&, boost::optional<int> >(lua_State*, LuaContext::tag<std::shared_ptr<DownstreamState> >, LuaContext::Binder<setupLuaConfig(LuaContext&, bool, bool)::$_2&, boost::variant<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::unordered_map<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::variant<bool, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::vector<std::pair<int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, std::function<std::tuple<DNSName, unsigned short, unsigned short> (DNSName const&, unsigned short, unsigned short, dnsheader*)> >, std::hash<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::equal_to<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, boost::variant<bool, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::vector<std::pair<int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, std::function<std::tuple<DNSName, unsigned short, unsigned short> (DNSName const&, unsigned short, unsigned short, dnsheader*)> > > > > > const&>&, int, LuaContext::tag<boost::optional<int> >) /opt/project/pdns/dnsdistdist/./ext/luawrapper/include/LuaContext.hpp:1774:20 (dnsdist+0xdf8624)
#14 std::enable_if<!(IsOptional<boost::variant<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::unordered_map<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::variant<bool, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::vector<std::pair<int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, std::function<std::tuple<DNSName, unsigned short, unsigned short> (DNSName const&, unsigned short, unsigned short, dnsheader*)> >, std::hash<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::equal_to<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, boost::variant<bool, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::vector<std::pair<int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, std::function<std::tuple<DNSName, unsigned short, unsigned short> (DNSName const&, unsigned short, unsigned short, dnsheader*)> > > > > > >::value), std::shared_ptr<DownstreamState> >::type LuaContext::readIntoFunction<std::shared_ptr<DownstreamState>, setupLuaConfig(LuaContext&, bool, bool)::$_2&, boost::variant<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::unordered_map<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::variant<bool, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::vector<std::pair<int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, std::function<std::tuple<DNSName, unsigned short, unsigned short> (DNSName const&, unsigned short, unsigned short, dnsheader*)> >, std::hash<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::equal_to<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, boost::variant<bool, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::vector<std::pair<int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, std::function<std::tuple<DNSName, unsigned short, unsigned short> (DNSName const&, unsigned short, unsigned short, dnsheader*)> > > > > >, boost::optional<int> >(lua_State*, LuaContext::tag<std::shared_ptr<DownstreamState> >, setupLuaConfig(LuaContext&, bool, bool)::$_2&, int, LuaContext::tag<boost::variant<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::unordered_map<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::variant<bool, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::vector<std::pair<int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, std::function<std::tuple<DNSName, unsigned short, unsigned short> (DNSName const&, unsigned short, unsigned short, dnsheader*)> >, std::hash<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::equal_to<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, boost::variant<bool, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::vector<std::pair<int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, std::function<std::tuple<DNSName, unsigned short, unsigned short> (DNSName const&, unsigned short, unsigned short, dnsheader*)> > > > > > >, LuaContext::tag<boost::optional<int> >) /opt/project/pdns/dnsdistdist/./ext/luawrapper/include/LuaContext.hpp:1796:16 (dnsdist+0xdf848d)
#15 std::enable_if<(!(std::integral_constant<bool, false>::value)) && (!(std::is_void<bool>::value)), LuaContext::PushedObject>::type LuaContext::Pusher<std::shared_ptr<DownstreamState> (boost::variant<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::unordered_map<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::variant<bool, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::vector<std::pair<int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, std::function<std::tuple<DNSName, unsigned short, unsigned short> (DNSName const&, unsigned short, unsigned short, dnsheader*)> >, std::hash<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::equal_to<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, boost::variant<bool, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::vector<std::pair<int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, std::function<std::tuple<DNSName, unsigned short, unsigned short> (DNSName const&, unsigned short, unsigned short, dnsheader*)> > > > > >, boost::optional<int>), void>::callback2<setupLuaConfig(LuaContext&, bool, bool)::$_2&>(lua_State*, bool&&, int) /opt/project/pdns/dnsdistdist/./ext/luawrapper/include/LuaContext.hpp:2429:31 (dnsdist+0xdf83c2)
#16 LuaContext::PushedObject LuaContext::Pusher<std::shared_ptr<DownstreamState> (boost::variant<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::unordered_map<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::variant<bool, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::vector<std::pair<int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, std::function<std::tuple<DNSName, unsigned short, unsigned short> (DNSName const&, unsigned short, unsigned short, dnsheader*)> >, std::hash<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::equal_to<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, boost::variant<bool, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::vector<std::pair<int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, std::function<std::tuple<DNSName, unsigned short, unsigned short> (DNSName const&, unsigned short, unsigned short, dnsheader*)> > > > > >, boost::optional<int>), void>::callback<setupLuaConfig(LuaContext&, bool, bool)::$_2>(lua_State*, setupLuaConfig(LuaContext&, bool, bool)::$_2*, int) /opt/project/pdns/dnsdistdist/./ext/luawrapper/include/LuaContext.hpp:2398:20 (dnsdist+0xdf8169)
#17 std::enable_if<boost::has_trivial_destructor<setupLuaConfig(LuaContext&, bool, bool)::$_2>::value, LuaContext::PushedObject>::type LuaContext::Pusher<std::shared_ptr<DownstreamState> (boost::variant<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::unordered_map<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::variant<bool, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::vector<std::pair<int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, std::function<std::tuple<DNSName, unsigned short, unsigned short> (DNSName const&, unsigned short, unsigned short, dnsheader*)> >, std::hash<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::equal_to<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, boost::variant<bool, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::vector<std::pair<int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, std::function<std::tuple<DNSName, unsigned short, unsigned short> (DNSName const&, unsigned short, unsigned short, dnsheader*)> > > > > >, boost::optional<int>), void>::push<setupLuaConfig(LuaContext&, bool, bool)::$_2>(lua_State*, setupLuaConfig(LuaContext&, bool, bool)::$_2)::'lambda'(lua_State*)::operator()(lua_State*) const /opt/project/pdns/dnsdistdist/./ext/luawrapper/include/LuaContext.hpp:2327:20 (dnsdist+0xdf80c9)
#18 std::enable_if<boost::has_trivial_destructor<setupLuaConfig(LuaContext&, bool, bool)::$_2>::value, LuaContext::PushedObject>::type LuaContext::Pusher<std::shared_ptr<DownstreamState> (boost::variant<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::unordered_map<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::variant<bool, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::vector<std::pair<int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, std::function<std::tuple<DNSName, unsigned short, unsigned short> (DNSName const&, unsigned short, unsigned short, dnsheader*)> >, std::hash<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::equal_to<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, boost::variant<bool, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::vector<std::pair<int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, std::function<std::tuple<DNSName, unsigned short, unsigned short> (DNSName const&, unsigned short, unsigned short, dnsheader*)> > > > > >, boost::optional<int>), void>::push<setupLuaConfig(LuaContext&, bool, bool)::$_2>(lua_State*, setupLuaConfig(LuaContext&, bool, bool)::$_2)::'lambda'(lua_State*)::__invoke(lua_State*) /opt/project/pdns/dnsdistdist/./ext/luawrapper/include/LuaContext.hpp:2323:31 (dnsdist+0xdf8055)
#19 _init <null> (libluajit-5.1.so.2+0x9dd6)
#20 std::tuple<> LuaContext::call<std::tuple<> >(lua_State*, LuaContext::PushedObject) /opt/project/pdns/dnsdistdist/./ext/luawrapper/include/LuaContext.hpp:1413:29 (dnsdist+0xc9ae67)
#21 LuaContext::executeCode(std::istream&) /opt/project/pdns/dnsdistdist/./ext/luawrapper/include/LuaContext.hpp:267:9 (dnsdist+0xe6077a)
#22 setupLua(LuaContext&, bool, bool, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) /opt/project/pdns/dnsdistdist/dnsdist-lua.cc:2599:10 (dnsdist+0xdf4ff3)
#23 main /opt/project/pdns/dnsdistdist/dnsdist.cc:2235:17 (dnsdist+0xf282ea)
Thread T2 'dnsdist/SNMP' (tid=11160, running) created by main thread at:
#0 pthread_create <null> (dnsdist+0x75f2d5)
#1 std::thread::_M_start_thread(std::unique_ptr<std::thread::_State, std::default_delete<std::thread::_State> >, void (*)()) <null> (libstdc++.so.6+0xbbdb4)
#2 SNMPAgent::run() /opt/project/pdns/dnsdistdist/./snmp-agent.hh:36:14 (dnsdist+0xf3087c)
#3 main /opt/project/pdns/dnsdistdist/dnsdist.cc:2373:20 (dnsdist+0xf28f32)
Thread T18 'dnsdist/healthC' (tid=11176, running) created by main thread at:
#0 pthread_create <null> (dnsdist+0x75f2d5)
#1 std::thread::_M_start_thread(std::unique_ptr<std::thread::_State, std::default_delete<std::thread::_State> >, void (*)()) <null> (libstdc++.so.6+0xbbdb4)
#2 main /opt/project/pdns/dnsdistdist/dnsdist.cc:2463:12 (dnsdist+0xf29769)
SUMMARY: ThreadSanitizer: data race (/opt/dnsdist-with-tsan/bin/dnsdist+0x7a6eb0) in __tsan_atomic64_load
```
16 tasks
rgacogne
added a commit
that referenced
this issue
Mar 15, 2023
The IO error was not always handled by the proper TCP thread, possibly leading to a race condition where two TCP worker threads were touching the same TCP connection object at the same time. Technically the issue also exists for XFR responses, but these are very unlikely to cross protocols. We are still applying the same fix. The issue was introduced in 516a000. This was reported by Thread Sanitizer: ``` 2023-03-10T13:52:59.5959261Z WARNING: ThreadSanitizer: data race (pid=15423) 2023-03-10T13:52:59.5959559Z Read of size 1 at 0x7b040000385c by thread T2 (mutexes: write M188): 2023-03-10T13:52:59.5960220Z #0 IOStateHandler::isWaitingForRead() const /home/runner/work/pdns/pdns/pdns/dnsdistdist/./tcpiohandler-mplexer.hh:41:12 (dnsdist+0x2e2978) 2023-03-10T13:52:59.5961073Z #1 IOStateHandler::update(IOState, std::function<void (int, boost::any&)>, boost::any, boost::optional<timeval>) /home/runner/work/pdns/pdns/pdns/dnsdistdist/./tcpiohandler-mplexer.hh:109:9 (dnsdist+0x2e2978) 2023-03-10T13:52:59.5961812Z #2 IOStateHandler::reset() /home/runner/work/pdns/pdns/pdns/dnsdistdist/./tcpiohandler-mplexer.hh:59:5 (dnsdist+0x2ea4c6) 2023-03-10T13:52:59.5962451Z #3 IOStateHandler::reset() /home/runner/work/pdns/pdns/pdns/dnsdistdist/./tcpiohandler-mplexer.hh:59:5 (dnsdist+0x2ea4c6) 2023-03-10T13:52:59.5963106Z #4 IOStateHandler::~IOStateHandler() /home/runner/work/pdns/pdns/pdns/dnsdistdist/./tcpiohandler-mplexer.hh:31:7 (dnsdist+0x2ea2a4) 2023-03-10T13:52:59.5980185Z #5 std::default_delete<IOStateHandler>::operator()(IOStateHandler*) const /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/unique_ptr.h:85:2 (dnsdist+0x2ea2a4) 2023-03-10T13:52:59.5981308Z #6 std::__uniq_ptr_impl<IOStateHandler, std::default_delete<IOStateHandler> >::reset(IOStateHandler*) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/unique_ptr.h:182:4 (dnsdist+0x2ea0c3) 2023-03-10T13:52:59.5982163Z #7 std::__uniq_ptr_impl<IOStateHandler, std::default_delete<IOStateHandler> >::reset(IOStateHandler*) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/unique_ptr.h:182:4 (dnsdist+0x2ea0c3) 2023-03-10T13:52:59.5983209Z #8 std::unique_ptr<IOStateHandler, std::default_delete<IOStateHandler> >::reset(IOStateHandler*) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/unique_ptr.h:456:7 (dnsdist+0xb1eb8a) 2023-03-10T13:52:59.5984893Z #9 IncomingTCPConnectionState::terminateClientConnection() /home/runner/work/pdns/pdns/pdns/dnsdistdist/dnsdist-tcp.cc:384:13 (dnsdist+0xb1eb8a) 2023-03-10T13:52:59.5985685Z #10 IncomingTCPConnectionState::notifyIOError(InternalQueryState&&, timeval const&) /home/runner/work/pdns/pdns/pdns/dnsdistdist/dnsdist-tcp.cc:1111:12 (dnsdist+0xb29b13) 2023-03-10T13:52:59.5989279Z #11 IncomingTCPConnectionState::notifyIOError(InternalQueryState&&, timeval const&) /home/runner/work/pdns/pdns/pdns/dnsdistdist/dnsdist-tcp.cc:1111:12 (dnsdist+0xb29b13) 2023-03-10T13:52:59.5990754Z #12 dnsdist_ffi_drop_from_async /home/runner/work/pdns/pdns/pdns/dnsdistdist/dnsdist-lua-ffi.cc:931:11 (dnsdist+0x816ac7) 2023-03-10T13:52:59.5991305Z #13 <null> <null> (0x7f3d3ad7fca3) 2023-03-10T13:52:59.5992209Z #14 void LuaContext::call<void, unsigned short, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&>(lua_State*, LuaContext::PushedObject, unsigned short&&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) /home/runner/work/pdns/pdns/pdns/dnsdistdist/./ext/luawrapper/include/LuaContext.hpp:1413:29 (dnsdist+0x5b31b5) 2023-03-10T13:52:59.5993583Z #15 LuaContext::LuaFunctionCaller<void (unsigned short, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)>::operator()(unsigned short&&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) const /home/runner/work/pdns/pdns/pdns/dnsdistdist/./ext/luawrapper/include/LuaContext.hpp:1983:16 (dnsdist+0x5b31b5) 2023-03-10T13:52:59.5998774Z #16 void std::__invoke_impl<void, LuaContext::LuaFunctionCaller<void (unsigned short, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)>&, unsigned short, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&>(std::__invoke_other, LuaContext::LuaFunctionCaller<void (unsigned short, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)>&, unsigned short&&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/invoke.h:60:14 (dnsdist+0x5b2b24) 2023-03-10T13:52:59.6002652Z #17 std::enable_if<is_invocable_r_v<void, LuaContext::LuaFunctionCaller<void (unsigned short, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)>&, unsigned short, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&>, void>::type std::__invoke_r<void, LuaContext::LuaFunctionCaller<void (unsigned short, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)>&, unsigned short, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&>(LuaContext::LuaFunctionCaller<void (unsigned short, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)>&, unsigned short&&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/invoke.h:110:2 (dnsdist+0x5b2b24) 2023-03-10T13:52:59.6006264Z #18 std::_Function_handler<void (unsigned short, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&), LuaContext::LuaFunctionCaller<void (unsigned short, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)> >::_M_invoke(std::_Any_data const&, unsigned short&&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/std_function.h:291:9 (dnsdist+0x5b2b24) 2023-03-10T13:52:59.6011711Z #19 void std::__invoke_impl<void, LuaContext::LuaFunctionCaller<void (unsigned short, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)>&, unsigned short, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&>(std::__invoke_other, LuaContext::LuaFunctionCaller<void (unsigned short, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)>&, unsigned short&&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/invoke.h:60:14 (dnsdist+0x5b2b24) 2023-03-10T13:52:59.6015474Z #20 std::enable_if<is_invocable_r_v<void, LuaContext::LuaFunctionCaller<void (unsigned short, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)>&, unsigned short, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&>, void>::type std::__invoke_r<void, LuaContext::LuaFunctionCaller<void (unsigned short, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)>&, unsigned short, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&>(LuaContext::LuaFunctionCaller<void (unsigned short, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)>&, unsigned short&&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/invoke.h:110:2 (dnsdist+0x5b2b24) 2023-03-10T13:52:59.6021250Z #21 std::_Function_handler<void (unsigned short, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&), LuaContext::LuaFunctionCaller<void (unsigned short, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)> >::_M_invoke(std::_Any_data const&, unsigned short&&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/std_function.h:291:9 (dnsdist+0x5b2b24) 2023-03-10T13:52:59.6023199Z #22 std::function<void (unsigned short, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)>::operator()(unsigned short, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) const /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/std_function.h:622:14 (dnsdist+0x5b4099) 2023-03-10T13:52:59.6024946Z #23 std::function<void (unsigned short, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)>::operator()(unsigned short, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) const /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/std_function.h:622:14 (dnsdist+0x5b4099) 2023-03-10T13:52:59.6031647Z #24 std::function<void (unsigned short, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)>::operator()(unsigned short, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) const /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/std_function.h:622:14 (dnsdist+0x5b4099) 2023-03-10T13:52:59.6034121Z #25 setupLuaBindingsNetwork(LuaContext&, bool)::$_4::operator()(std::shared_ptr<dnsdist::NetworkListener>&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, unsigned short, std::function<void (unsigned short, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)>) const::'lambda'(unsigned short, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)::operator()(unsigned short, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) const /home/runner/work/pdns/pdns/pdns/dnsdistdist/dnsdist-lua-bindings-network.cc:73:9 (dnsdist+0x5b3f99) 2023-03-10T13:52:59.6041186Z #26 void std::__invoke_impl<void, setupLuaBindingsNetwork(LuaContext&, bool)::$_4::operator()(std::shared_ptr<dnsdist::NetworkListener>&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, unsigned short, std::function<void (unsigned short, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)>) const::'lambda'(unsigned short, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)&, unsigned short, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&>(std::__invoke_other, setupLuaBindingsNetwork(LuaContext&, bool)::$_4::operator()(std::shared_ptr<dnsdist::NetworkListener>&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, unsigned short, std::function<void (unsigned short, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)>) const::'lambda'(unsigned short, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)&, unsigned short&&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/invoke.h:60:14 (dnsdist+0x5b3df8) 2023-03-10T13:52:59.6053139Z #27 std::enable_if<is_invocable_r_v<void, setupLuaBindingsNetwork(LuaContext&, bool)::$_4::operator()(std::shared_ptr<dnsdist::NetworkListener>&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, unsigned short, std::function<void (unsigned short, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)>) const::'lambda'(unsigned short, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)&, unsigned short, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&>, void>::type std::__invoke_r<void, setupLuaBindingsNetwork(LuaContext&, bool)::$_4::operator()(std::shared_ptr<dnsdist::NetworkListener>&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, unsigned short, std::function<void (unsigned short, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)>) const::'lambda'(unsigned short, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)&, unsigned short, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&>(setupLuaBindingsNetwork(LuaContext&, bool)::$_4::operator()(std::shared_ptr<dnsdist::NetworkListener>&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, unsigned short, std::function<void (unsigned short, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)>) const::'lambda'(unsigned short, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)&, unsigned short&&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/invoke.h:110:2 (dnsdist+0x5b3df8) 2023-03-10T13:52:59.6061003Z #28 std::_Function_handler<void (unsigned short, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&), setupLuaBindingsNetwork(LuaContext&, bool)::$_4::operator()(std::shared_ptr<dnsdist::NetworkListener>&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, unsigned short, std::function<void (unsigned short, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)>) const::'lambda'(unsigned short, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)>::_M_invoke(std::_Any_data const&, unsigned short&&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/std_function.h:291:9 (dnsdist+0x5b3df8) 2023-03-10T13:52:59.6068262Z #29 std::function<void (unsigned short, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)>::operator()(unsigned short, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) const /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/std_function.h:622:14 (dnsdist+0x8cad59) 2023-03-10T13:52:59.6070197Z #30 std::function<void (unsigned short, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)>::operator()(unsigned short, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) const /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/std_function.h:622:14 (dnsdist+0x8cad59) 2023-03-10T13:52:59.6071860Z #31 std::function<void (unsigned short, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)>::operator()(unsigned short, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) const /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/std_function.h:622:14 (dnsdist+0x8cad59) 2023-03-10T13:52:59.6072883Z #32 dnsdist::NetworkListener::readCB(int, boost::any&) /home/runner/work/pdns/pdns/pdns/dnsdistdist/dnsdist-lua-network.cc:64:7 (dnsdist+0x8ca9e6) 2023-03-10T13:52:59.6076346Z #33 void std::__invoke_impl<void, void (*&)(int, boost::any&), int, boost::any&>(std::__invoke_other, void (*&)(int, boost::any&), int&&, boost::any&) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/invoke.h:60:14 (dnsdist+0x2efbf3) 2023-03-10T13:52:59.6077403Z #34 std::enable_if<is_invocable_r_v<void, void (*&)(int, boost::any&), int, boost::any&>, void>::type std::__invoke_r<void, void (*&)(int, boost::any&), int, boost::any&>(void (*&)(int, boost::any&), int&&, boost::any&) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/invoke.h:110:2 (dnsdist+0x2efb12) 2023-03-10T13:52:59.6078361Z #35 std::_Function_handler<void (int, boost::any&), void (*)(int, boost::any&)>::_M_invoke(std::_Any_data const&, int&&, boost::any&) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/std_function.h:291:9 (dnsdist+0x2ef949) 2023-03-10T13:52:59.6079161Z #36 std::function<void (int, boost::any&)>::operator()(int, boost::any&) const /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/std_function.h:622:14 (dnsdist+0xc14f6c) 2023-03-10T13:52:59.6079696Z #37 EpollFDMultiplexer::run(timeval*, int) /home/runner/work/pdns/pdns/pdns/dnsdistdist/epollmplexer.cc:190:9 (dnsdist+0xc4fc84) 2023-03-10T13:52:59.6080417Z #38 dnsdist::NetworkListener::runOnce(timeval&, unsigned int) /home/runner/work/pdns/pdns/pdns/dnsdistdist/dnsdist-lua-network.cc:130:14 (dnsdist+0x8cba17) 2023-03-10T13:52:59.6081121Z #39 dnsdist::NetworkListener::mainThread() /home/runner/work/pdns/pdns/pdns/dnsdistdist/dnsdist-lua-network.cc:139:5 (dnsdist+0x8cba17) 2023-03-10T13:52:59.6081918Z #40 dnsdist::NetworkListener::start()::$_0::operator()() const /home/runner/work/pdns/pdns/pdns/dnsdistdist/dnsdist-lua-network.cc:146:5 (dnsdist+0x8cdffd) 2023-03-10T13:52:59.6089376Z #41 dnsdist::NetworkListener::start()::$_0::operator()() const /home/runner/work/pdns/pdns/pdns/dnsdistdist/dnsdist-lua-network.cc:146:5 (dnsdist+0x8cdffd) 2023-03-10T13:52:59.6090276Z #42 void std::__invoke_impl<void, dnsdist::NetworkListener::start()::$_0>(std::__invoke_other, dnsdist::NetworkListener::start()::$_0&&) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/invoke.h:60:14 (dnsdist+0x8cdfc5) 2023-03-10T13:52:59.6091963Z #43 std::__invoke_result<dnsdist::NetworkListener::start()::$_0>::type std::__invoke<dnsdist::NetworkListener::start()::$_0>(dnsdist::NetworkListener::start()::$_0&&) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/invoke.h:95:14 (dnsdist+0x8cdf95) 2023-03-10T13:52:59.6093040Z #44 void std::thread::_Invoker<std::tuple<dnsdist::NetworkListener::start()::$_0> >::_M_invoke<0ul>(std::_Index_tuple<0ul>) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/thread:264:13 (dnsdist+0x8cdf6c) 2023-03-10T13:52:59.6096527Z #45 std::thread::_Invoker<std::tuple<dnsdist::NetworkListener::start()::$_0> >::operator()() /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/thread:271:11 (dnsdist+0x8cdef5) 2023-03-10T13:52:59.6097439Z #46 std::thread::_State_impl<std::thread::_Invoker<std::tuple<dnsdist::NetworkListener::start()::$_0> > >::_M_run() (.llvm.6599844077253043448) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/thread:215:13 (dnsdist+0x8cde39) 2023-03-10T13:52:59.6097887Z #47 <null> <null> (libstdc++.so.6+0xda6b3) 2023-03-10T13:52:59.6098058Z 2023-03-10T13:52:59.6098203Z Previous write of size 1 at 0x7b040000385c by thread T8: 2023-03-10T13:52:59.6098928Z #0 IOStateHandler::update(IOState, std::function<void (int, boost::any&)>, boost::any, boost::optional<timeval>) /home/runner/work/pdns/pdns/pdns/dnsdistdist/./tcpiohandler-mplexer.hh:112:26 (dnsdist+0x2e29b1) 2023-03-10T13:52:59.6099813Z #1 IncomingTCPConnectionState::handleIO(std::shared_ptr<IncomingTCPConnectionState>&, timeval const&) /home/runner/work/pdns/pdns/pdns/dnsdistdist/dnsdist-tcp.cc:1075:25 (dnsdist+0xb23c18) 2023-03-10T13:52:59.6100613Z #2 IncomingTCPConnectionState::handleIOCallback(int, boost::any&) /home/runner/work/pdns/pdns/pdns/dnsdistdist/dnsdist-tcp.cc:827:3 (dnsdist+0xb246dd) 2023-03-10T13:52:59.6101492Z #3 void std::__invoke_impl<void, void (*&)(int, boost::any&), int, boost::any&>(std::__invoke_other, void (*&)(int, boost::any&), int&&, boost::any&) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/invoke.h:60:14 (dnsdist+0x2efbf3) 2023-03-10T13:52:59.6102502Z #4 std::enable_if<is_invocable_r_v<void, void (*&)(int, boost::any&), int, boost::any&>, void>::type std::__invoke_r<void, void (*&)(int, boost::any&), int, boost::any&>(void (*&)(int, boost::any&), int&&, boost::any&) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/invoke.h:110:2 (dnsdist+0x2efb12) 2023-03-10T13:52:59.6103665Z #5 std::_Function_handler<void (int, boost::any&), void (*)(int, boost::any&)>::_M_invoke(std::_Any_data const&, int&&, boost::any&) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/std_function.h:291:9 (dnsdist+0x2ef949) 2023-03-10T13:52:59.6104464Z #6 std::function<void (int, boost::any&)>::operator()(int, boost::any&) const /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/std_function.h:622:14 (dnsdist+0xc14f6c) 2023-03-10T13:52:59.6105005Z #7 EpollFDMultiplexer::run(timeval*, int) /home/runner/work/pdns/pdns/pdns/dnsdistdist/epollmplexer.cc:190:9 (dnsdist+0xc4fc84) 2023-03-10T13:52:59.6105772Z #8 tcpClientThread(int, int, int, int, std::vector<ClientState*, std::allocator<ClientState*> >) /home/runner/work/pdns/pdns/pdns/dnsdistdist/dnsdist-tcp.cc:1318:21 (dnsdist+0xb1c132) 2023-03-10T13:52:59.6107243Z #9 void std::__invoke_impl<void, void (*)(int, int, int, int, std::vector<ClientState*, std::allocator<ClientState*> >), int, int, int, int, std::vector<ClientState*, std::allocator<ClientState*> > >(std::__invoke_other, void (*&&)(int, int, int, int, std::vector<ClientState*, std::allocator<ClientState*> >), int&&, int&&, int&&, int&&, std::vector<ClientState*, std::allocator<ClientState*> >&&) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/invoke.h:60:14 (dnsdist+0xb3d4d7) 2023-03-10T13:52:59.6109241Z #10 std::__invoke_result<void (*)(int, int, int, int, std::vector<ClientState*, std::allocator<ClientState*> >), int, int, int, int, std::vector<ClientState*, std::allocator<ClientState*> > >::type std::__invoke<void (*)(int, int, int, int, std::vector<ClientState*, std::allocator<ClientState*> >), int, int, int, int, std::vector<ClientState*, std::allocator<ClientState*> > >(void (*&&)(int, int, int, int, std::vector<ClientState*, std::allocator<ClientState*> >), int&&, int&&, int&&, int&&, std::vector<ClientState*, std::allocator<ClientState*> >&&) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/invoke.h:95:14 (dnsdist+0xb3c6a2) 2023-03-10T13:52:59.6110879Z #11 void std::thread::_Invoker<std::tuple<void (*)(int, int, int, int, std::vector<ClientState*, std::allocator<ClientState*> >), int, int, int, int, std::vector<ClientState*, std::allocator<ClientState*> > > >::_M_invoke<0ul, 1ul, 2ul, 3ul, 4ul, 5ul>(std::_Index_tuple<0ul, 1ul, 2ul, 3ul, 4ul, 5ul>) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/thread:264:13 (dnsdist+0xb3c6a2) 2023-03-10T13:52:59.6112054Z #12 std::thread::_Invoker<std::tuple<void (*)(int, int, int, int, std::vector<ClientState*, std::allocator<ClientState*> >), int, int, int, int, std::vector<ClientState*, std::allocator<ClientState*> > > >::operator()() /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/thread:271:11 (dnsdist+0xb3c6a2) 2023-03-10T13:52:59.6113226Z #13 std::thread::_State_impl<std::thread::_Invoker<std::tuple<void (*)(int, int, int, int, std::vector<ClientState*, std::allocator<ClientState*> >), int, int, int, int, std::vector<ClientState*, std::allocator<ClientState*> > > > >::_M_run() /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/thread:215:13 (dnsdist+0xb3c6a2) 2023-03-10T13:52:59.6113778Z #14 <null> <null> (libstdc++.so.6+0xda6b3) 2023-03-10T13:52:59.6114055Z #15 <null> <null> (libstdc++.so.6+0xda6b3) 2023-03-10T13:52:59.6114324Z #16 <null> <null> (libstdc++.so.6+0xda6b3) 2023-03-10T13:52:59.6114574Z #17 <null> <null> (libstdc++.so.6+0xda6b3) 2023-03-10T13:52:59.6114728Z 2023-03-10T13:52:59.6114889Z Location is heap block of size 16 at 0x7b0400003850 allocated by thread T8: 2023-03-10T13:52:59.6115222Z #0 operator new(unsigned long) <null> (dnsdist+0x184e96) 2023-03-10T13:52:59.6115982Z #1 std::_MakeUniq<IOStateHandler>::__single_object std::make_unique<IOStateHandler, FDMultiplexer&, int&>(FDMultiplexer&, int&) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/unique_ptr.h:962:30 (dnsdist+0xb343bf) 2023-03-10T13:52:59.6116940Z #2 IncomingTCPConnectionState::IncomingTCPConnectionState(ConnectionInfo&&, TCPClientThreadData&, timeval const&) /home/runner/work/pdns/pdns/pdns/dnsdistdist/./dnsdist-tcp-upstream.hh:24:338 (dnsdist+0xb343bf) 2023-03-10T13:52:59.6118177Z #3 void __gnu_cxx::new_allocator<IncomingTCPConnectionState>::construct<IncomingTCPConnectionState, ConnectionInfo, TCPClientThreadData&, timeval&>(IncomingTCPConnectionState*, ConnectionInfo&&, TCPClientThreadData&, timeval&) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/ext/new_allocator.h:150:23 (dnsdist+0xb33938) 2023-03-10T13:52:59.6119719Z #4 void std::allocator_traits<std::allocator<IncomingTCPConnectionState> >::construct<IncomingTCPConnectionState, ConnectionInfo, TCPClientThreadData&, timeval&>(std::allocator<IncomingTCPConnectionState>&, IncomingTCPConnectionState*, ConnectionInfo&&, TCPClientThreadData&, timeval&) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/alloc_traits.h:512:8 (dnsdist+0xb33938) 2023-03-10T13:52:59.6121161Z #5 void __gnu_cxx::new_allocator<IncomingTCPConnectionState>::construct<IncomingTCPConnectionState, ConnectionInfo, TCPClientThreadData&, timeval&>(IncomingTCPConnectionState*, ConnectionInfo&&, TCPClientThreadData&, timeval&) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/ext/new_allocator.h:150:23 (dnsdist+0xb33938) 2023-03-10T13:52:59.6122645Z #6 void std::allocator_traits<std::allocator<IncomingTCPConnectionState> >::construct<IncomingTCPConnectionState, ConnectionInfo, TCPClientThreadData&, timeval&>(std::allocator<IncomingTCPConnectionState>&, IncomingTCPConnectionState*, ConnectionInfo&&, TCPClientThreadData&, timeval&) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/alloc_traits.h:512:8 (dnsdist+0xb33938) 2023-03-10T13:52:59.6124511Z #7 std::_Sp_counted_ptr_inplace<IncomingTCPConnectionState, std::allocator<IncomingTCPConnectionState>, (__gnu_cxx::_Lock_policy)2>::_Sp_counted_ptr_inplace<ConnectionInfo, TCPClientThreadData&, timeval&>(std::allocator<IncomingTCPConnectionState>, ConnectionInfo&&, TCPClientThreadData&, timeval&) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/shared_ptr_base.h:551:4 (dnsdist+0xb335b1) 2023-03-10T13:52:59.6126190Z #8 std::__shared_count<(__gnu_cxx::_Lock_policy)2>::__shared_count<IncomingTCPConnectionState, std::allocator<IncomingTCPConnectionState>, ConnectionInfo, TCPClientThreadData&, timeval&>(IncomingTCPConnectionState*&, std::_Sp_alloc_shared_tag<std::allocator<IncomingTCPConnectionState> >, ConnectionInfo&&, TCPClientThreadData&, timeval&) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/shared_ptr_base.h:683:6 (dnsdist+0xb335b1) 2023-03-10T13:52:59.6127835Z #9 std::_Sp_counted_ptr_inplace<IncomingTCPConnectionState, std::allocator<IncomingTCPConnectionState>, (__gnu_cxx::_Lock_policy)2>::_Sp_counted_ptr_inplace<ConnectionInfo, TCPClientThreadData&, timeval&>(std::allocator<IncomingTCPConnectionState>, ConnectionInfo&&, TCPClientThreadData&, timeval&) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/shared_ptr_base.h:551:4 (dnsdist+0xb335b1) 2023-03-10T13:52:59.6129495Z #10 std::__shared_count<(__gnu_cxx::_Lock_policy)2>::__shared_count<IncomingTCPConnectionState, std::allocator<IncomingTCPConnectionState>, ConnectionInfo, TCPClientThreadData&, timeval&>(IncomingTCPConnectionState*&, std::_Sp_alloc_shared_tag<std::allocator<IncomingTCPConnectionState> >, ConnectionInfo&&, TCPClientThreadData&, timeval&) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/shared_ptr_base.h:683:6 (dnsdist+0xb335b1) 2023-03-10T13:52:59.6131136Z #11 std::__shared_ptr<IncomingTCPConnectionState, (__gnu_cxx::_Lock_policy)2>::__shared_ptr<std::allocator<IncomingTCPConnectionState>, ConnectionInfo, TCPClientThreadData&, timeval&>(std::_Sp_alloc_shared_tag<std::allocator<IncomingTCPConnectionState> >, ConnectionInfo&&, TCPClientThreadData&, timeval&) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/shared_ptr_base.h:1371:14 (dnsdist+0xb33357) 2023-03-10T13:52:59.6132660Z #12 std::shared_ptr<IncomingTCPConnectionState>::shared_ptr<std::allocator<IncomingTCPConnectionState>, ConnectionInfo, TCPClientThreadData&, timeval&>(std::_Sp_alloc_shared_tag<std::allocator<IncomingTCPConnectionState> >, ConnectionInfo&&, TCPClientThreadData&, timeval&) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/shared_ptr.h:408:4 (dnsdist+0xb33357) 2023-03-10T13:52:59.6134205Z #13 std::shared_ptr<IncomingTCPConnectionState> std::allocate_shared<IncomingTCPConnectionState, std::allocator<IncomingTCPConnectionState>, ConnectionInfo, TCPClientThreadData&, timeval&>(std::allocator<IncomingTCPConnectionState> const&, ConnectionInfo&&, TCPClientThreadData&, timeval&) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/shared_ptr.h:859:14 (dnsdist+0xb33357) 2023-03-10T13:52:59.6135927Z #14 std::__shared_ptr<IncomingTCPConnectionState, (__gnu_cxx::_Lock_policy)2>::__shared_ptr<std::allocator<IncomingTCPConnectionState>, ConnectionInfo, TCPClientThreadData&, timeval&>(std::_Sp_alloc_shared_tag<std::allocator<IncomingTCPConnectionState> >, ConnectionInfo&&, TCPClientThreadData&, timeval&) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/shared_ptr_base.h:1371:14 (dnsdist+0xb33357) 2023-03-10T13:52:59.6137427Z #15 std::shared_ptr<IncomingTCPConnectionState>::shared_ptr<std::allocator<IncomingTCPConnectionState>, ConnectionInfo, TCPClientThreadData&, timeval&>(std::_Sp_alloc_shared_tag<std::allocator<IncomingTCPConnectionState> >, ConnectionInfo&&, TCPClientThreadData&, timeval&) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/shared_ptr.h:408:4 (dnsdist+0xb33357) 2023-03-10T13:52:59.6139010Z #16 std::shared_ptr<IncomingTCPConnectionState> std::allocate_shared<IncomingTCPConnectionState, std::allocator<IncomingTCPConnectionState>, ConnectionInfo, TCPClientThreadData&, timeval&>(std::allocator<IncomingTCPConnectionState> const&, ConnectionInfo&&, TCPClientThreadData&, timeval&) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/shared_ptr.h:859:14 (dnsdist+0xb33357) 2023-03-10T13:52:59.6140360Z #17 std::shared_ptr<IncomingTCPConnectionState> std::make_shared<IncomingTCPConnectionState, ConnectionInfo, TCPClientThreadData&, timeval&>(ConnectionInfo&&, TCPClientThreadData&, timeval&) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/shared_ptr.h:875:14 (dnsdist+0xb3323c) 2023-03-10T13:52:59.6141560Z #18 std::shared_ptr<IncomingTCPConnectionState> std::make_shared<IncomingTCPConnectionState, ConnectionInfo, TCPClientThreadData&, timeval&>(ConnectionInfo&&, TCPClientThreadData&, timeval&) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/shared_ptr.h:875:14 (dnsdist+0xb3323c) 2023-03-10T13:52:59.6142764Z #19 std::shared_ptr<IncomingTCPConnectionState> std::make_shared<IncomingTCPConnectionState, ConnectionInfo, TCPClientThreadData&, timeval&>(ConnectionInfo&&, TCPClientThreadData&, timeval&) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/shared_ptr.h:875:14 (dnsdist+0xb3323c) 2023-03-10T13:52:59.6143631Z #20 handleIncomingTCPQuery(int, boost::any&) /home/runner/work/pdns/pdns/pdns/dnsdistdist/dnsdist-tcp.cc:1164:18 (dnsdist+0xb30c93) 2023-03-10T13:52:59.6144480Z #21 void std::__invoke_impl<void, void (*&)(int, boost::any&), int, boost::any&>(std::__invoke_other, void (*&)(int, boost::any&), int&&, boost::any&) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/invoke.h:60:14 (dnsdist+0x2efbf3) 2023-03-10T13:52:59.6145171Z #22 std::enable_if<is_invocable_r_v<void, void (*&)(int, boost::any&), int, boost::any&>, void>::type std::__invoke_r<void, void (*&)(int, boost::any&), int, boost::any&>(void (*&)(int, boost::any&), int&&, boost::any&) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/invoke.h:110:2 (dnsdist+0x2efb12) 2023-03-10T13:52:59.6145727Z #23 std::_Function_handler<void (int, boost::any&), void (*)(int, boost::any&)>::_M_invoke(std::_Any_data const&, int&&, boost::any&) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/std_function.h:291:9 (dnsdist+0x2ef949) 2023-03-10T13:52:59.6146188Z #24 std::function<void (int, boost::any&)>::operator()(int, boost::any&) const /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/std_function.h:622:14 (dnsdist+0xc14f6c) 2023-03-10T13:52:59.6146441Z #25 EpollFDMultiplexer::run(timeval*, int) /home/runner/work/pdns/pdns/pdns/dnsdistdist/epollmplexer.cc:190:9 (dnsdist+0xc4fc84) 2023-03-10T13:52:59.6146930Z #26 tcpClientThread(int, int, int, int, std::vector<ClientState*, std::allocator<ClientState*> >) /home/runner/work/pdns/pdns/pdns/dnsdistdist/dnsdist-tcp.cc:1318:21 (dnsdist+0xb1c132) 2023-03-10T13:52:59.6148031Z #27 void std::__invoke_impl<void, void (*)(int, int, int, int, std::vector<ClientState*, std::allocator<ClientState*> >), int, int, int, int, std::vector<ClientState*, std::allocator<ClientState*> > >(std::__invoke_other, void (*&&)(int, int, int, int, std::vector<ClientState*, std::allocator<ClientState*> >), int&&, int&&, int&&, int&&, std::vector<ClientState*, std::allocator<ClientState*> >&&) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/invoke.h:60:14 (dnsdist+0xb3d4d7) 2023-03-10T13:52:59.6149371Z #28 std::__invoke_result<void (*)(int, int, int, int, std::vector<ClientState*, std::allocator<ClientState*> >), int, int, int, int, std::vector<ClientState*, std::allocator<ClientState*> > >::type std::__invoke<void (*)(int, int, int, int, std::vector<ClientState*, std::allocator<ClientState*> >), int, int, int, int, std::vector<ClientState*, std::allocator<ClientState*> > >(void (*&&)(int, int, int, int, std::vector<ClientState*, std::allocator<ClientState*> >), int&&, int&&, int&&, int&&, std::vector<ClientState*, std::allocator<ClientState*> >&&) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/invoke.h:95:14 (dnsdist+0xb3c6a2) 2023-03-10T13:52:59.6150265Z #29 void std::thread::_Invoker<std::tuple<void (*)(int, int, int, int, std::vector<ClientState*, std::allocator<ClientState*> >), int, int, int, int, std::vector<ClientState*, std::allocator<ClientState*> > > >::_M_invoke<0ul, 1ul, 2ul, 3ul, 4ul, 5ul>(std::_Index_tuple<0ul, 1ul, 2ul, 3ul, 4ul, 5ul>) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/thread:264:13 (dnsdist+0xb3c6a2) 2023-03-10T13:52:59.6150973Z #30 std::thread::_Invoker<std::tuple<void (*)(int, int, int, int, std::vector<ClientState*, std::allocator<ClientState*> >), int, int, int, int, std::vector<ClientState*, std::allocator<ClientState*> > > >::operator()() /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/thread:271:11 (dnsdist+0xb3c6a2) 2023-03-10T13:52:59.6151745Z #31 std::thread::_State_impl<std::thread::_Invoker<std::tuple<void (*)(int, int, int, int, std::vector<ClientState*, std::allocator<ClientState*> >), int, int, int, int, std::vector<ClientState*, std::allocator<ClientState*> > > > >::_M_run() /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/thread:215:13 (dnsdist+0xb3c6a2) 2023-03-10T13:52:59.6151858Z #32 <null> <null> (libstdc++.so.6+0xda6b3) 2023-03-10T13:52:59.6151978Z #33 <null> <null> (libstdc++.so.6+0xda6b3) 2023-03-10T13:52:59.6152094Z #34 <null> <null> (libstdc++.so.6+0xda6b3) 2023-03-10T13:52:59.6152209Z #35 <null> <null> (libstdc++.so.6+0xda6b3) 2023-03-10T13:52:59.6152216Z 2023-03-10T13:52:59.6152326Z Mutex M188 (0x55807ad82020) created at: 2023-03-10T13:52:59.6152457Z #0 pthread_mutex_lock <null> (dnsdist+0x111876) 2023-03-10T13:52:59.6152906Z #1 __gthread_mutex_lock(pthread_mutex_t*) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/x86_64-linux-gnu/c++/10/bits/gthr-default.h:749:12 (dnsdist+0x1af1df) 2023-03-10T13:52:59.6153271Z #2 std::mutex::lock() /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/std_mutex.h:100:17 (dnsdist+0x1af1df) 2023-03-10T13:52:59.6153688Z #3 std::lock_guard<std::mutex>::lock_guard(std::mutex&) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/std_mutex.h:159:19 (dnsdist+0x2635f9) 2023-03-10T13:52:59.6153984Z #4 LockGuardedHolder<LuaContext>::LockGuardedHolder(LuaContext&, std::mutex&) /home/runner/work/pdns/pdns/pdns/dnsdistdist/./lock.hh:209:60 (dnsdist+0x2635f9) 2023-03-10T13:52:59.6154404Z #5 std::lock_guard<std::mutex>::lock_guard(std::mutex&) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/std_mutex.h:159:19 (dnsdist+0x2635f9) 2023-03-10T13:52:59.6154677Z #6 LockGuardedHolder<LuaContext>::LockGuardedHolder(LuaContext&, std::mutex&) /home/runner/work/pdns/pdns/pdns/dnsdistdist/./lock.hh:209:60 (dnsdist+0x2635f9) 2023-03-10T13:52:59.6154906Z #7 LockGuarded<LuaContext>::lock() /home/runner/work/pdns/pdns/pdns/dnsdistdist/./lock.hh:289:12 (dnsdist+0x25b372) 2023-03-10T13:52:59.6155196Z #8 LockGuarded<LuaContext>::lock() /home/runner/work/pdns/pdns/pdns/dnsdistdist/./lock.hh:289:12 (dnsdist+0x25b372) 2023-03-10T13:52:59.6155387Z #9 main /home/runner/work/pdns/pdns/pdns/dnsdistdist/dnsdist.cc:2667:34 (dnsdist+0xb93565) 2023-03-10T13:52:59.6155395Z 2023-03-10T13:52:59.6155663Z Thread T2 'dnsdist/lua-net' (tid=15426, running) created by main thread at: 2023-03-10T13:52:59.6155789Z #0 pthread_create <null> (dnsdist+0xf3acb) 2023-03-10T13:52:59.6156049Z #1 std::thread::_M_start_thread(std::unique_ptr<std::thread::_State, std::default_delete<std::thread::_State> >, void (*)()) <null> (libstdc++.so.6+0xda989) 2023-03-10T13:52:59.6156439Z #2 dnsdist::NetworkListener::start() /home/runner/work/pdns/pdns/pdns/dnsdistdist/dnsdist-lua-network.cc:145:22 (dnsdist+0x8cbae1) 2023-03-10T13:52:59.6157087Z #3 setupLuaBindingsNetwork(LuaContext&, bool)::$_6::operator()(std::shared_ptr<dnsdist::NetworkListener>&) const /home/runner/work/pdns/pdns/pdns/dnsdistdist/dnsdist-lua-bindings-network.cc:100:15 (dnsdist+0x5bbf4f) 2023-03-10T13:52:59.6157529Z #4 decltype(*(this).function(*(this).param)) LuaContext::Binder<setupLuaBindingsNetwork(LuaContext&, bool)::$_6&, std::shared_ptr<dnsdist::NetworkListener>&>::operator()<>() /home/runner/work/pdns/pdns/pdns/dnsdistdist/./ext/luawrapper/include/LuaContext.hpp:1853:20 (dnsdist+0x5bbebb) 2023-03-10T13:52:59.6158131Z #5 void LuaContext::readIntoFunction<void, LuaContext::Binder<setupLuaBindingsNetwork(LuaContext&, bool)::$_6&, std::shared_ptr<dnsdist::NetworkListener>&>&>(lua_State*, LuaContext::tag<void>, LuaContext::Binder<setupLuaBindingsNetwork(LuaContext&, bool)::$_6&, std::shared_ptr<dnsdist::NetworkListener>&>&, int) /home/runner/work/pdns/pdns/pdns/dnsdistdist/./ext/luawrapper/include/LuaContext.hpp:1772:16 (dnsdist+0x5bbebb) 2023-03-10T13:52:59.6158816Z #6 std::enable_if<!(IsOptional<std::shared_ptr<dnsdist::NetworkListener>&>::value), void>::type LuaContext::readIntoFunction<void, setupLuaBindingsNetwork(LuaContext&, bool)::$_6&, std::shared_ptr<dnsdist::NetworkListener>&>(lua_State*, LuaContext::tag<void>, setupLuaBindingsNetwork(LuaContext&, bool)::$_6&, int, LuaContext::tag<std::shared_ptr<dnsdist::NetworkListener>&>) /home/runner/work/pdns/pdns/pdns/dnsdistdist/./ext/luawrapper/include/LuaContext.hpp:1803:16 (dnsdist+0x5bbd55) 2023-03-10T13:52:59.6159489Z #7 std::enable_if<!(IsOptional<std::shared_ptr<dnsdist::NetworkListener>&>::value), void>::type LuaContext::readIntoFunction<void, setupLuaBindingsNetwork(LuaContext&, bool)::$_6&, std::shared_ptr<dnsdist::NetworkListener>&>(lua_State*, LuaContext::tag<void>, setupLuaBindingsNetwork(LuaContext&, bool)::$_6&, int, LuaContext::tag<std::shared_ptr<dnsdist::NetworkListener>&>) /home/runner/work/pdns/pdns/pdns/dnsdistdist/./ext/luawrapper/include/LuaContext.hpp:1803:16 (dnsdist+0x5bbd55) 2023-03-10T13:52:59.6160072Z #8 std::enable_if<(std::integral_constant<bool, true>::value) && (!(std::is_void<bool>::value)), LuaContext::PushedObject>::type LuaContext::Pusher<void (std::shared_ptr<dnsdist::NetworkListener>&), void>::callback2<setupLuaBindingsNetwork(LuaContext&, bool)::$_6&>(lua_State*, bool&&, int) /home/runner/work/pdns/pdns/pdns/dnsdistdist/./ext/luawrapper/include/LuaContext.hpp:2443:9 (dnsdist+0x5bbc62) 2023-03-10T13:52:59.6160587Z #9 LuaContext::PushedObject LuaContext::Pusher<void (std::shared_ptr<dnsdist::NetworkListener>&), void>::callback<setupLuaBindingsNetwork(LuaContext&, bool)::$_6>(lua_State*, setupLuaBindingsNetwork(LuaContext&, bool)::$_6*, int) /home/runner/work/pdns/pdns/pdns/dnsdistdist/./ext/luawrapper/include/LuaContext.hpp:2405:20 (dnsdist+0x5bb999) 2023-03-10T13:52:59.6161776Z #10 std::enable_if<boost::has_trivial_destructor<setupLuaBindingsNetwork(LuaContext&, bool)::$_6>::value, LuaContext::PushedObject>::type LuaContext::Pusher<void (std::shared_ptr<dnsdist::NetworkListener>&), void>::push<setupLuaBindingsNetwork(LuaContext&, bool)::$_6>(lua_State*, setupLuaBindingsNetwork(LuaContext&, bool)::$_6)::'lambda'(lua_State*)::operator()(lua_State*) const /home/runner/work/pdns/pdns/pdns/dnsdistdist/./ext/luawrapper/include/LuaContext.hpp:2334:20 (dnsdist+0x5bb8c7) 2023-03-10T13:52:59.6162870Z #11 std::enable_if<boost::has_trivial_destructor<setupLuaBindingsNetwork(LuaContext&, bool)::$_6>::value, LuaContext::PushedObject>::type LuaContext::Pusher<void (std::shared_ptr<dnsdist::NetworkListener>&), void>::push<setupLuaBindingsNetwork(LuaContext&, bool)::$_6>(lua_State*, setupLuaBindingsNetwork(LuaContext&, bool)::$_6)::'lambda'(lua_State*)::__invoke(lua_State*) /home/runner/work/pdns/pdns/pdns/dnsdistdist/./ext/luawrapper/include/LuaContext.hpp:2330:31 (dnsdist+0x5bb8c7) 2023-03-10T13:52:59.6163072Z #12 <null> <null> (libluajit-5.1.so.2+0x8fb6) 2023-03-10T13:52:59.6163265Z #13 <null> <null> (libluajit-5.1.so.2+0x8fb6) 2023-03-10T13:52:59.6163654Z #14 std::tuple<> LuaContext::call<std::tuple<> >(lua_State*, LuaContext::PushedObject) /home/runner/work/pdns/pdns/pdns/dnsdistdist/./ext/luawrapper/include/LuaContext.hpp:1413:29 (dnsdist+0x81d979) 2023-03-10T13:52:59.6164106Z #15 LuaContext::executeCode(std::istream&) /home/runner/work/pdns/pdns/pdns/dnsdistdist/./ext/luawrapper/include/LuaContext.hpp:267:9 (dnsdist+0x999ddf) 2023-03-10T13:52:59.6164650Z #16 setupLua(LuaContext&, bool, bool, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) /home/runner/work/pdns/pdns/pdns/dnsdistdist/dnsdist-lua.cc:3022:10 (dnsdist+0x98ecf3) 2023-03-10T13:52:59.6164844Z #17 main /home/runner/work/pdns/pdns/pdns/dnsdistdist/dnsdist.cc:2667:17 (dnsdist+0xb935a4) 2023-03-10T13:52:59.6164852Z 2023-03-10T13:52:59.6165108Z Thread T8 'dnsdist/tcpClie' (tid=15432, running) created by main thread at: 2023-03-10T13:52:59.6165219Z #0 pthread_create <null> (dnsdist+0xf3acb) 2023-03-10T13:52:59.6165479Z #1 std::thread::_M_start_thread(std::unique_ptr<std::thread::_State, std::default_delete<std::thread::_State> >, void (*)()) <null> (libstdc++.so.6+0xda989) 2023-03-10T13:52:59.6166034Z #2 TCPClientCollection::TCPClientCollection(unsigned long, std::vector<ClientState*, std::allocator<ClientState*> >) /home/runner/work/pdns/pdns/pdns/dnsdistdist/dnsdist-tcp.cc:126:5 (dnsdist+0xb1a91a) 2023-03-10T13:52:59.6166576Z #3 TCPClientCollection::TCPClientCollection(unsigned long, std::vector<ClientState*, std::allocator<ClientState*> >) /home/runner/work/pdns/pdns/pdns/dnsdistdist/dnsdist-tcp.cc:126:5 (dnsdist+0xb1a91a) 2023-03-10T13:52:59.6167392Z #4 std::_MakeUniq<TCPClientCollection>::__single_object std::make_unique<TCPClientCollection, unsigned long&, std::vector<ClientState*, std::allocator<ClientState*> > >(unsigned long&, std::vector<ClientState*, std::allocator<ClientState*> >&&) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/unique_ptr.h:962:34 (dnsdist+0xb962aa) 2023-03-10T13:52:59.6167587Z #5 main /home/runner/work/pdns/pdns/pdns/dnsdistdist/dnsdist.cc:2834:26 (dnsdist+0xb962aa) 2023-03-10T13:52:59.6167715Z #6 __libc_start_main <null> (libc.so.6+0x24082) 2023-03-10T13:52:59.6167841Z #7 __libc_start_main <null> (libc.so.6+0x24082) ```
Habbie
pushed a commit
that referenced
this issue
Mar 17, 2023
When `svc-autohints` is enabled, the content of SVCB and HTTPS records
is modified in `PacketHandler::doAdditionalProcessing()` to expand
the IPv4 and IPv6 with their actual values.
This causes an issue because the content of these records might be
shared between threads, via the record cache, and one thread could
be trying to read from the internal `std::set` while a second thread
is altering it, leading to a data race and possibly to memory corruption
and a crash.
This is correctly detected by TSAN:
```
WARNING: ThreadSanitizer: data race (pid=102795)
Write of size 8 at 0x7b3400010350 by thread T33:
#0 operator delete(void*) <null> (pdns_server+0x211b7c) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#1 std::__new_allocator<std::_Rb_tree_node<SvcParam>>::deallocate(std::_Rb_tree_node<SvcParam>*, unsigned long) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/new_allocator.h:158:2 (pdns_server+0x33fc78) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#2 std::allocator_traits<std::allocator<std::_Rb_tree_node<SvcParam>>>::deallocate(std::allocator<std::_Rb_tree_node<SvcParam>>&, std::_Rb_tree_node<SvcParam>*, unsigned long) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/alloc_traits.h:496:13 (pdns_server+0x33fc78)
#3 std::_Rb_tree<SvcParam, SvcParam, std::_Identity<SvcParam>, std::less<SvcParam>, std::allocator<SvcParam>>::_M_put_node(std::_Rb_tree_node<SvcParam>*) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/stl_tree.h:565:9 (pdns_server+0x33fc78)
#4 std::_Rb_tree<SvcParam, SvcParam, std::_Identity<SvcParam>, std::less<SvcParam>, std::allocator<SvcParam>>::_M_drop_node(std::_Rb_tree_node<SvcParam>*) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/stl_tree.h:632:2 (pdns_server+0x33fc78)
#5 std::_Rb_tree<SvcParam, SvcParam, std::_Identity<SvcParam>, std::less<SvcParam>, std::allocator<SvcParam>>::_M_erase_aux(std::_Rb_tree_const_iterator<SvcParam>) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/stl_tree.h:2495:7 (pdns_server+0x33fc78)
#6 std::_Rb_tree<SvcParam, SvcParam, std::_Identity<SvcParam>, std::less<SvcParam>, std::allocator<SvcParam>>::erase[abi:cxx11](std::_Rb_tree_const_iterator<SvcParam>) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/stl_tree.h:1197:2 (pdns_server+0x33fc78)
#7 std::set<SvcParam, std::less<SvcParam>, std::allocator<SvcParam>>::erase[abi:cxx11](std::_Rb_tree_const_iterator<SvcParam>) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/stl_set.h:655:21 (pdns_server+0x33fc78)
#8 SVCBBaseRecordContent::setHints(SvcParam::SvcParamKey const&, std::vector<ComboAddress, std::allocator<ComboAddress>> const&) /work/pdns/pdns/dnsrecords.cc:768:14 (pdns_server+0x33fc78)
#9 PacketHandler::doAdditionalProcessing(DNSPacket&, std::unique_ptr<DNSPacket, std::default_delete<DNSPacket>>&) /work/pdns/pdns/packethandler.cc:565:16 (pdns_server+0x4ed330) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#10 PacketHandler::doQuestion(DNSPacket&) /work/pdns/pdns/packethandler.cc:1794:5 (pdns_server+0x4f79b4) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#11 PacketHandler::question(DNSPacket&) /work/pdns/pdns/packethandler.cc:1175:10 (pdns_server+0x4f649a) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#12 MultiThreadDistributor<DNSPacket, DNSPacket, PacketHandler>::distribute(int) /work/pdns/pdns/./distributor.hh:220:14 (pdns_server+0x260f70) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#13 MultiThreadDistributor<DNSPacket, DNSPacket, PacketHandler>::MultiThreadDistributor(int)::'lambda'()::operator()() const /work/pdns/pdns/./distributor.hh:179:25 (pdns_server+0x260b31) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#14 void std::__invoke_impl<void, MultiThreadDistributor<DNSPacket, DNSPacket, PacketHandler>::MultiThreadDistributor(int)::'lambda'()>(std::__invoke_other, MultiThreadDistributor<DNSPacket, DNSPacket, PacketHandler>::MultiThreadDistributor(int)::'lambda'()&&) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/invoke.h:61:14 (pdns_server+0x260b31)
#15 std::__invoke_result<MultiThreadDistributor<DNSPacket, DNSPacket, PacketHandler>::MultiThreadDistributor(int)::'lambda'()>::type std::__invoke<MultiThreadDistributor<DNSPacket, DNSPacket, PacketHandler>::MultiThreadDistributor(int)::'lambda'()>(MultiThreadDistributor<DNSPacket, DNSPacket, PacketHandler>::MultiThreadDistributor(int)::'lambda'()&&) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/invoke.h:96:14 (pdns_server+0x260b31)
#16 void std::thread::_Invoker<std::tuple<MultiThreadDistributor<DNSPacket, DNSPacket, PacketHandler>::MultiThreadDistributor(int)::'lambda'()>>::_M_invoke<0ul>(std::_Index_tuple<0ul>) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/std_thread.h:258:13 (pdns_server+0x260b31)
#17 std::thread::_Invoker<std::tuple<MultiThreadDistributor<DNSPacket, DNSPacket, PacketHandler>::MultiThreadDistributor(int)::'lambda'()>>::operator()() /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/std_thread.h:265:11 (pdns_server+0x260b31)
#18 std::thread::_State_impl<std::thread::_Invoker<std::tuple<MultiThreadDistributor<DNSPacket, DNSPacket, PacketHandler>::MultiThreadDistributor(int)::'lambda'()>>>::_M_run() /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/std_thread.h:210:13 (pdns_server+0x260b31)
#19 execute_native_thread_routine /usr/src/debug/gcc/gcc/libstdc++-v3/src/c++11/thread.cc:82:18 (libstdc++.so.6+0xd72c2) (BuildId: 6fe66a2d539a78c993bd2d377e00fad389220963)
Previous read of size 2 at 0x7b3400010350 by thread T39:
#0 SvcParam::getKey() const /work/pdns/pdns/./svc-records.hh:80:12 (pdns_server+0x3721f3) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#1 GenericDNSPacketWriter<std::vector<unsigned char, std::allocator<unsigned char>>>::xfrSvcParamKeyVals(std::set<SvcParam, std::less<SvcParam>, std::allocator<SvcParam>> const&) /work/pdns/pdns/dnswriter.cc:404:23 (pdns_server+0x3721f3)
#2 void HTTPSRecordContent::xfrPacket<GenericDNSPacketWriter<std::vector<unsigned char, std::allocator<unsigned char>>>>(GenericDNSPacketWriter<std::vector<unsigned char, std::allocator<unsigned char>>>&, bool) /work/pdns/pdns/dnsrecords.cc:348:1 (pdns_server+0x3349bd) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#3 HTTPSRecordContent::toPacket(GenericDNSPacketWriter<std::vector<unsigned char, std::allocator<unsigned char>>>&) /work/pdns/pdns/dnsrecords.cc:348:1 (pdns_server+0x3349bd)
#4 DNSRecordContent::serialize[abi:cxx11](DNSName const&, bool, bool) /work/pdns/pdns/./dnsparser.hh:215:11 (pdns_server+0x311140) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#5 DNSPacket::addRecord(DNSZoneRecord&&) /work/pdns/pdns/dnspacket.cc:177:68 (pdns_server+0x2fa894) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#6 PacketHandler::doAdditionalProcessing(DNSPacket&, std::unique_ptr<DNSPacket, std::default_delete<DNSPacket>>&) /work/pdns/pdns/packethandler.cc:542:8 (pdns_server+0x4eccf2) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#7 PacketHandler::doQuestion(DNSPacket&) /work/pdns/pdns/packethandler.cc:1794:5 (pdns_server+0x4f79b4) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#8 PacketHandler::question(DNSPacket&) /work/pdns/pdns/packethandler.cc:1175:10 (pdns_server+0x4f649a) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#9 MultiThreadDistributor<DNSPacket, DNSPacket, PacketHandler>::distribute(int) /work/pdns/pdns/./distributor.hh:220:14 (pdns_server+0x260f70) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#10 MultiThreadDistributor<DNSPacket, DNSPacket, PacketHandler>::MultiThreadDistributor(int)::'lambda'()::operator()() const /work/pdns/pdns/./distributor.hh:179:25 (pdns_server+0x260b31) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#11 void std::__invoke_impl<void, MultiThreadDistributor<DNSPacket, DNSPacket, PacketHandler>::MultiThreadDistributor(int)::'lambda'()>(std::__invoke_other, MultiThreadDistributor<DNSPacket, DNSPacket, PacketHandler>::MultiThreadDistributor(int)::'lambda'()&&) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/invoke.h:61:14 (pdns_server+0x260b31)
#12 std::__invoke_result<MultiThreadDistributor<DNSPacket, DNSPacket, PacketHandler>::MultiThreadDistributor(int)::'lambda'()>::type std::__invoke<MultiThreadDistributor<DNSPacket, DNSPacket, PacketHandler>::MultiThreadDistributor(int)::'lambda'()>(MultiThreadDistributor<DNSPacket, DNSPacket, PacketHandler>::MultiThreadDistributor(int)::'lambda'()&&) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/invoke.h:96:14 (pdns_server+0x260b31)
#13 void std::thread::_Invoker<std::tuple<MultiThreadDistributor<DNSPacket, DNSPacket, PacketHandler>::MultiThreadDistributor(int)::'lambda'()>>::_M_invoke<0ul>(std::_Index_tuple<0ul>) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/std_thread.h:258:13 (pdns_server+0x260b31)
#14 std::thread::_Invoker<std::tuple<MultiThreadDistributor<DNSPacket, DNSPacket, PacketHandler>::MultiThreadDistributor(int)::'lambda'()>>::operator()() /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/std_thread.h:265:11 (pdns_server+0x260b31)
#15 std::thread::_State_impl<std::thread::_Invoker<std::tuple<MultiThreadDistributor<DNSPacket, DNSPacket, PacketHandler>::MultiThreadDistributor(int)::'lambda'()>>>::_M_run() /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/std_thread.h:210:13 (pdns_server+0x260b31)
#16 execute_native_thread_routine /usr/src/debug/gcc/gcc/libstdc++-v3/src/c++11/thread.cc:82:18 (libstdc++.so.6+0xd72c2) (BuildId: 6fe66a2d539a78c993bd2d377e00fad389220963)
Thread T33 'pdns/distributo' (tid=102833, running) created by thread T17 at:
#0 pthread_create <null> (pdns_server+0x1904e6) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#1 __gthread_create /usr/src/debug/gcc/gcc-build/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:663:35 (libstdc++.so.6+0xd73a9) (BuildId: 6fe66a2d539a78c993bd2d377e00fad389220963)
#2 std::thread::_M_start_thread(std::unique_ptr<std::thread::_State, std::default_delete<std::thread::_State>>, void (*)()) /usr/src/debug/gcc/gcc/libstdc++-v3/src/c++11/thread.cc:147:37 (libstdc++.so.6+0xd73a9)
#3 Distributor<DNSPacket, DNSPacket, PacketHandler>::Create(int) /work/pdns/pdns/./distributor.hh:134:18 (pdns_server+0x256d23) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#4 qthread(unsigned int) /work/pdns/pdns/auth-main.cc:536:25 (pdns_server+0x256d23)
#5 void std::__invoke_impl<void, void (*)(unsigned int), unsigned int>(std::__invoke_other, void (*&&)(unsigned int), unsigned int&&) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/invoke.h:61:14 (pdns_server+0x2635f0) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#6 std::__invoke_result<void (*)(unsigned int), unsigned int>::type std::__invoke<void (*)(unsigned int), unsigned int>(void (*&&)(unsigned int), unsigned int&&) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/invoke.h:96:14 (pdns_server+0x2635f0)
#7 void std::thread::_Invoker<std::tuple<void (*)(unsigned int), unsigned int>>::_M_invoke<0ul, 1ul>(std::_Index_tuple<0ul, 1ul>) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/std_thread.h:258:13 (pdns_server+0x2635f0)
#8 std::thread::_Invoker<std::tuple<void (*)(unsigned int), unsigned int>>::operator()() /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/std_thread.h:265:11 (pdns_server+0x2635f0)
#9 std::thread::_State_impl<std::thread::_Invoker<std::tuple<void (*)(unsigned int), unsigned int>>>::_M_run() /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/std_thread.h:210:13 (pdns_server+0x2635f0)
#10 execute_native_thread_routine /usr/src/debug/gcc/gcc/libstdc++-v3/src/c++11/thread.cc:82:18 (libstdc++.so.6+0xd72c2) (BuildId: 6fe66a2d539a78c993bd2d377e00fad389220963)
Thread T39 'pdns/distributo' (tid=102837, running) created by thread T19 at:
#0 pthread_create <null> (pdns_server+0x1904e6) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#1 __gthread_create /usr/src/debug/gcc/gcc-build/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:663:35 (libstdc++.so.6+0xd73a9) (BuildId: 6fe66a2d539a78c993bd2d377e00fad389220963)
#2 std::thread::_M_start_thread(std::unique_ptr<std::thread::_State, std::default_delete<std::thread::_State>>, void (*)()) /usr/src/debug/gcc/gcc/libstdc++-v3/src/c++11/thread.cc:147:37 (libstdc++.so.6+0xd73a9)
#3 Distributor<DNSPacket, DNSPacket, PacketHandler>::Create(int) /work/pdns/pdns/./distributor.hh:134:18 (pdns_server+0x256d23) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#4 qthread(unsigned int) /work/pdns/pdns/auth-main.cc:536:25 (pdns_server+0x256d23)
#5 void std::__invoke_impl<void, void (*)(unsigned int), unsigned int>(std::__invoke_other, void (*&&)(unsigned int), unsigned int&&) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/invoke.h:61:14 (pdns_server+0x2635f0) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#6 std::__invoke_result<void (*)(unsigned int), unsigned int>::type std::__invoke<void (*)(unsigned int), unsigned int>(void (*&&)(unsigned int), unsigned int&&) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/invoke.h:96:14 (pdns_server+0x2635f0)
#7 void std::thread::_Invoker<std::tuple<void (*)(unsigned int), unsigned int>>::_M_invoke<0ul, 1ul>(std::_Index_tuple<0ul, 1ul>) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/std_thread.h:258:13 (pdns_server+0x2635f0)
#8 std::thread::_Invoker<std::tuple<void (*)(unsigned int), unsigned int>>::operator()() /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/std_thread.h:265:11 (pdns_server+0x2635f0)
#9 std::thread::_State_impl<std::thread::_Invoker<std::tuple<void (*)(unsigned int), unsigned int>>>::_M_run() /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/std_thread.h:210:13 (pdns_server+0x2635f0)
#10 execute_native_thread_routine /usr/src/debug/gcc/gcc/libstdc++-v3/src/c++11/thread.cc:82:18 (libstdc++.so.6+0xd72c2) (BuildId: 6fe66a2d539a78c993bd2d377e00fad389220963)
SUMMARY: ThreadSanitizer: data race (/work/pdns-rgacogne/pdns/pdns_server+0x211b7c) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593) in operator delete(void*)
```
To prevent this issue, this commit wraps the internal `std::set` in a
mutex. In theory this will cause a performance impact, but in practice
I did not find it to be noticeable.
If we ever do, a different solution would be to duplicate the content
of the SVCB/HTTPS records before modifying them.
rgacogne
added a commit
that referenced
this issue
Mar 22, 2023
When `svc-autohints` is enabled, the content of SVCB and HTTPS records
is modified in `PacketHandler::doAdditionalProcessing()` to expand
the IPv4 and IPv6 with their actual values.
This causes an issue because the content of these records might be
shared between threads, via the record cache, and one thread could
be trying to read from the internal `std::set` while a second thread
is altering it, leading to a data race and possibly to memory corruption
and a crash.
This is correctly detected by TSAN:
```
WARNING: ThreadSanitizer: data race (pid=102795)
Write of size 8 at 0x7b3400010350 by thread T33:
#0 operator delete(void*) <null> (pdns_server+0x211b7c) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#1 std::__new_allocator<std::_Rb_tree_node<SvcParam>>::deallocate(std::_Rb_tree_node<SvcParam>*, unsigned long) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/new_allocator.h:158:2 (pdns_server+0x33fc78) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#2 std::allocator_traits<std::allocator<std::_Rb_tree_node<SvcParam>>>::deallocate(std::allocator<std::_Rb_tree_node<SvcParam>>&, std::_Rb_tree_node<SvcParam>*, unsigned long) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/alloc_traits.h:496:13 (pdns_server+0x33fc78)
#3 std::_Rb_tree<SvcParam, SvcParam, std::_Identity<SvcParam>, std::less<SvcParam>, std::allocator<SvcParam>>::_M_put_node(std::_Rb_tree_node<SvcParam>*) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/stl_tree.h:565:9 (pdns_server+0x33fc78)
#4 std::_Rb_tree<SvcParam, SvcParam, std::_Identity<SvcParam>, std::less<SvcParam>, std::allocator<SvcParam>>::_M_drop_node(std::_Rb_tree_node<SvcParam>*) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/stl_tree.h:632:2 (pdns_server+0x33fc78)
#5 std::_Rb_tree<SvcParam, SvcParam, std::_Identity<SvcParam>, std::less<SvcParam>, std::allocator<SvcParam>>::_M_erase_aux(std::_Rb_tree_const_iterator<SvcParam>) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/stl_tree.h:2495:7 (pdns_server+0x33fc78)
#6 std::_Rb_tree<SvcParam, SvcParam, std::_Identity<SvcParam>, std::less<SvcParam>, std::allocator<SvcParam>>::erase[abi:cxx11](std::_Rb_tree_const_iterator<SvcParam>) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/stl_tree.h:1197:2 (pdns_server+0x33fc78)
#7 std::set<SvcParam, std::less<SvcParam>, std::allocator<SvcParam>>::erase[abi:cxx11](std::_Rb_tree_const_iterator<SvcParam>) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/stl_set.h:655:21 (pdns_server+0x33fc78)
#8 SVCBBaseRecordContent::setHints(SvcParam::SvcParamKey const&, std::vector<ComboAddress, std::allocator<ComboAddress>> const&) /work/pdns/pdns/dnsrecords.cc:768:14 (pdns_server+0x33fc78)
#9 PacketHandler::doAdditionalProcessing(DNSPacket&, std::unique_ptr<DNSPacket, std::default_delete<DNSPacket>>&) /work/pdns/pdns/packethandler.cc:565:16 (pdns_server+0x4ed330) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#10 PacketHandler::doQuestion(DNSPacket&) /work/pdns/pdns/packethandler.cc:1794:5 (pdns_server+0x4f79b4) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#11 PacketHandler::question(DNSPacket&) /work/pdns/pdns/packethandler.cc:1175:10 (pdns_server+0x4f649a) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#12 MultiThreadDistributor<DNSPacket, DNSPacket, PacketHandler>::distribute(int) /work/pdns/pdns/./distributor.hh:220:14 (pdns_server+0x260f70) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#13 MultiThreadDistributor<DNSPacket, DNSPacket, PacketHandler>::MultiThreadDistributor(int)::'lambda'()::operator()() const /work/pdns/pdns/./distributor.hh:179:25 (pdns_server+0x260b31) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#14 void std::__invoke_impl<void, MultiThreadDistributor<DNSPacket, DNSPacket, PacketHandler>::MultiThreadDistributor(int)::'lambda'()>(std::__invoke_other, MultiThreadDistributor<DNSPacket, DNSPacket, PacketHandler>::MultiThreadDistributor(int)::'lambda'()&&) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/invoke.h:61:14 (pdns_server+0x260b31)
#15 std::__invoke_result<MultiThreadDistributor<DNSPacket, DNSPacket, PacketHandler>::MultiThreadDistributor(int)::'lambda'()>::type std::__invoke<MultiThreadDistributor<DNSPacket, DNSPacket, PacketHandler>::MultiThreadDistributor(int)::'lambda'()>(MultiThreadDistributor<DNSPacket, DNSPacket, PacketHandler>::MultiThreadDistributor(int)::'lambda'()&&) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/invoke.h:96:14 (pdns_server+0x260b31)
#16 void std:thread:_Invoker<std::tuple<MultiThreadDistributor<DNSPacket, DNSPacket, PacketHandler>::MultiThreadDistributor(int)::'lambda'()>>::_M_invoke<0ul>(std::_Index_tuple<0ul>) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/std_thread.h:258:13 (pdns_server+0x260b31)
#17 std:thread:_Invoker<std::tuple<MultiThreadDistributor<DNSPacket, DNSPacket, PacketHandler>::MultiThreadDistributor(int)::'lambda'()>>::operator()() /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/std_thread.h:265:11 (pdns_server+0x260b31)
#18 std:thread:_State_impl<std:thread:_Invoker<std::tuple<MultiThreadDistributor<DNSPacket, DNSPacket, PacketHandler>::MultiThreadDistributor(int)::'lambda'()>>>::_M_run() /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/std_thread.h:210:13 (pdns_server+0x260b31)
#19 execute_native_thread_routine /usr/src/debug/gcc/gcc/libstdc++-v3/src/c++11/thread.cc:82:18 (libstdc++.so.6+0xd72c2) (BuildId: 6fe66a2d539a78c993bd2d377e00fad389220963)
Previous read of size 2 at 0x7b3400010350 by thread T39:
#0 SvcParam::getKey() const /work/pdns/pdns/./svc-records.hh:80:12 (pdns_server+0x3721f3) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#1 GenericDNSPacketWriter<std::vector<unsigned char, std::allocator<unsigned char>>>::xfrSvcParamKeyVals(std::set<SvcParam, std::less<SvcParam>, std::allocator<SvcParam>> const&) /work/pdns/pdns/dnswriter.cc:404:23 (pdns_server+0x3721f3)
#2 void HTTPSRecordContent::xfrPacket<GenericDNSPacketWriter<std::vector<unsigned char, std::allocator<unsigned char>>>>(GenericDNSPacketWriter<std::vector<unsigned char, std::allocator<unsigned char>>>&, bool) /work/pdns/pdns/dnsrecords.cc:348:1 (pdns_server+0x3349bd) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#3 HTTPSRecordContent::toPacket(GenericDNSPacketWriter<std::vector<unsigned char, std::allocator<unsigned char>>>&) /work/pdns/pdns/dnsrecords.cc:348:1 (pdns_server+0x3349bd)
#4 DNSRecordContent::serialize[abi:cxx11](DNSName const&, bool, bool) /work/pdns/pdns/./dnsparser.hh:215:11 (pdns_server+0x311140) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#5 DNSPacket::addRecord(DNSZoneRecord&&) /work/pdns/pdns/dnspacket.cc:177:68 (pdns_server+0x2fa894) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#6 PacketHandler::doAdditionalProcessing(DNSPacket&, std::unique_ptr<DNSPacket, std::default_delete<DNSPacket>>&) /work/pdns/pdns/packethandler.cc:542:8 (pdns_server+0x4eccf2) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#7 PacketHandler::doQuestion(DNSPacket&) /work/pdns/pdns/packethandler.cc:1794:5 (pdns_server+0x4f79b4) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#8 PacketHandler::question(DNSPacket&) /work/pdns/pdns/packethandler.cc:1175:10 (pdns_server+0x4f649a) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#9 MultiThreadDistributor<DNSPacket, DNSPacket, PacketHandler>::distribute(int) /work/pdns/pdns/./distributor.hh:220:14 (pdns_server+0x260f70) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#10 MultiThreadDistributor<DNSPacket, DNSPacket, PacketHandler>::MultiThreadDistributor(int)::'lambda'()::operator()() const /work/pdns/pdns/./distributor.hh:179:25 (pdns_server+0x260b31) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#11 void std::__invoke_impl<void, MultiThreadDistributor<DNSPacket, DNSPacket, PacketHandler>::MultiThreadDistributor(int)::'lambda'()>(std::__invoke_other, MultiThreadDistributor<DNSPacket, DNSPacket, PacketHandler>::MultiThreadDistributor(int)::'lambda'()&&) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/invoke.h:61:14 (pdns_server+0x260b31)
#12 std::__invoke_result<MultiThreadDistributor<DNSPacket, DNSPacket, PacketHandler>::MultiThreadDistributor(int)::'lambda'()>::type std::__invoke<MultiThreadDistributor<DNSPacket, DNSPacket, PacketHandler>::MultiThreadDistributor(int)::'lambda'()>(MultiThreadDistributor<DNSPacket, DNSPacket, PacketHandler>::MultiThreadDistributor(int)::'lambda'()&&) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/invoke.h:96:14 (pdns_server+0x260b31)
#13 void std:thread:_Invoker<std::tuple<MultiThreadDistributor<DNSPacket, DNSPacket, PacketHandler>::MultiThreadDistributor(int)::'lambda'()>>::_M_invoke<0ul>(std::_Index_tuple<0ul>) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/std_thread.h:258:13 (pdns_server+0x260b31)
#14 std:thread:_Invoker<std::tuple<MultiThreadDistributor<DNSPacket, DNSPacket, PacketHandler>::MultiThreadDistributor(int)::'lambda'()>>::operator()() /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/std_thread.h:265:11 (pdns_server+0x260b31)
#15 std:thread:_State_impl<std:thread:_Invoker<std::tuple<MultiThreadDistributor<DNSPacket, DNSPacket, PacketHandler>::MultiThreadDistributor(int)::'lambda'()>>>::_M_run() /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/std_thread.h:210:13 (pdns_server+0x260b31)
#16 execute_native_thread_routine /usr/src/debug/gcc/gcc/libstdc++-v3/src/c++11/thread.cc:82:18 (libstdc++.so.6+0xd72c2) (BuildId: 6fe66a2d539a78c993bd2d377e00fad389220963)
Thread T33 'pdns/distributo' (tid=102833, running) created by thread T17 at:
#0 pthread_create <null> (pdns_server+0x1904e6) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#1 __gthread_create /usr/src/debug/gcc/gcc-build/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:663:35 (libstdc++.so.6+0xd73a9) (BuildId: 6fe66a2d539a78c993bd2d377e00fad389220963)
#2 std:thread:_M_start_thread(std::unique_ptr<std:thread:_State, std::default_delete<std:thread:_State>>, void (*)()) /usr/src/debug/gcc/gcc/libstdc++-v3/src/c++11/thread.cc:147:37 (libstdc++.so.6+0xd73a9)
#3 Distributor<DNSPacket, DNSPacket, PacketHandler>::Create(int) /work/pdns/pdns/./distributor.hh:134:18 (pdns_server+0x256d23) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#4 qthread(unsigned int) /work/pdns/pdns/auth-main.cc:536:25 (pdns_server+0x256d23)
#5 void std::__invoke_impl<void, void (*)(unsigned int), unsigned int>(std::__invoke_other, void (*&&)(unsigned int), unsigned int&&) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/invoke.h:61:14 (pdns_server+0x2635f0) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#6 std::__invoke_result<void (*)(unsigned int), unsigned int>::type std::__invoke<void (*)(unsigned int), unsigned int>(void (*&&)(unsigned int), unsigned int&&) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/invoke.h:96:14 (pdns_server+0x2635f0)
#7 void std:thread:_Invoker<std::tuple<void (*)(unsigned int), unsigned int>>::_M_invoke<0ul, 1ul>(std::_Index_tuple<0ul, 1ul>) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/std_thread.h:258:13 (pdns_server+0x2635f0)
#8 std:thread:_Invoker<std::tuple<void (*)(unsigned int), unsigned int>>::operator()() /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/std_thread.h:265:11 (pdns_server+0x2635f0)
#9 std:thread:_State_impl<std:thread:_Invoker<std::tuple<void (*)(unsigned int), unsigned int>>>::_M_run() /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/std_thread.h:210:13 (pdns_server+0x2635f0)
#10 execute_native_thread_routine /usr/src/debug/gcc/gcc/libstdc++-v3/src/c++11/thread.cc:82:18 (libstdc++.so.6+0xd72c2) (BuildId: 6fe66a2d539a78c993bd2d377e00fad389220963)
Thread T39 'pdns/distributo' (tid=102837, running) created by thread T19 at:
#0 pthread_create <null> (pdns_server+0x1904e6) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#1 __gthread_create /usr/src/debug/gcc/gcc-build/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:663:35 (libstdc++.so.6+0xd73a9) (BuildId: 6fe66a2d539a78c993bd2d377e00fad389220963)
#2 std:thread:_M_start_thread(std::unique_ptr<std:thread:_State, std::default_delete<std:thread:_State>>, void (*)()) /usr/src/debug/gcc/gcc/libstdc++-v3/src/c++11/thread.cc:147:37 (libstdc++.so.6+0xd73a9)
#3 Distributor<DNSPacket, DNSPacket, PacketHandler>::Create(int) /work/pdns/pdns/./distributor.hh:134:18 (pdns_server+0x256d23) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#4 qthread(unsigned int) /work/pdns/pdns/auth-main.cc:536:25 (pdns_server+0x256d23)
#5 void std::__invoke_impl<void, void (*)(unsigned int), unsigned int>(std::__invoke_other, void (*&&)(unsigned int), unsigned int&&) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/invoke.h:61:14 (pdns_server+0x2635f0) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#6 std::__invoke_result<void (*)(unsigned int), unsigned int>::type std::__invoke<void (*)(unsigned int), unsigned int>(void (*&&)(unsigned int), unsigned int&&) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/invoke.h:96:14 (pdns_server+0x2635f0)
#7 void std:thread:_Invoker<std::tuple<void (*)(unsigned int), unsigned int>>::_M_invoke<0ul, 1ul>(std::_Index_tuple<0ul, 1ul>) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/std_thread.h:258:13 (pdns_server+0x2635f0)
#8 std:thread:_Invoker<std::tuple<void (*)(unsigned int), unsigned int>>::operator()() /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/std_thread.h:265:11 (pdns_server+0x2635f0)
#9 std:thread:_State_impl<std:thread:_Invoker<std::tuple<void (*)(unsigned int), unsigned int>>>::_M_run() /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/std_thread.h:210:13 (pdns_server+0x2635f0)
#10 execute_native_thread_routine /usr/src/debug/gcc/gcc/libstdc++-v3/src/c++11/thread.cc:82:18 (libstdc++.so.6+0xd72c2) (BuildId: 6fe66a2d539a78c993bd2d377e00fad389220963)
SUMMARY: ThreadSanitizer: data race (/work/pdns-rgacogne/pdns/pdns_server+0x211b7c) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593) in operator delete(void*)
```
To prevent this issue, this commit clones the content of SVCB/HTTPS
records before modifying the copy. the drawback is that we need to
do this operation every single time we process them.
Habbie
pushed a commit
that referenced
this issue
Apr 13, 2023
When `svc-autohints` is enabled, the content of SVCB and HTTPS records
is modified in `PacketHandler::doAdditionalProcessing()` to expand
the IPv4 and IPv6 with their actual values.
This causes an issue because the content of these records might be
shared between threads, via the record cache, and one thread could
be trying to read from the internal `std::set` while a second thread
is altering it, leading to a data race and possibly to memory corruption
and a crash.
This is correctly detected by TSAN:
```
WARNING: ThreadSanitizer: data race (pid=102795)
Write of size 8 at 0x7b3400010350 by thread T33:
#0 operator delete(void*) <null> (pdns_server+0x211b7c) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#1 std::__new_allocator<std::_Rb_tree_node<SvcParam>>::deallocate(std::_Rb_tree_node<SvcParam>*, unsigned long) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/new_allocator.h:158:2 (pdns_server+0x33fc78) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#2 std::allocator_traits<std::allocator<std::_Rb_tree_node<SvcParam>>>::deallocate(std::allocator<std::_Rb_tree_node<SvcParam>>&, std::_Rb_tree_node<SvcParam>*, unsigned long) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/alloc_traits.h:496:13 (pdns_server+0x33fc78)
#3 std::_Rb_tree<SvcParam, SvcParam, std::_Identity<SvcParam>, std::less<SvcParam>, std::allocator<SvcParam>>::_M_put_node(std::_Rb_tree_node<SvcParam>*) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/stl_tree.h:565:9 (pdns_server+0x33fc78)
#4 std::_Rb_tree<SvcParam, SvcParam, std::_Identity<SvcParam>, std::less<SvcParam>, std::allocator<SvcParam>>::_M_drop_node(std::_Rb_tree_node<SvcParam>*) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/stl_tree.h:632:2 (pdns_server+0x33fc78)
#5 std::_Rb_tree<SvcParam, SvcParam, std::_Identity<SvcParam>, std::less<SvcParam>, std::allocator<SvcParam>>::_M_erase_aux(std::_Rb_tree_const_iterator<SvcParam>) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/stl_tree.h:2495:7 (pdns_server+0x33fc78)
#6 std::_Rb_tree<SvcParam, SvcParam, std::_Identity<SvcParam>, std::less<SvcParam>, std::allocator<SvcParam>>::erase[abi:cxx11](std::_Rb_tree_const_iterator<SvcParam>) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/stl_tree.h:1197:2 (pdns_server+0x33fc78)
#7 std::set<SvcParam, std::less<SvcParam>, std::allocator<SvcParam>>::erase[abi:cxx11](std::_Rb_tree_const_iterator<SvcParam>) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/stl_set.h:655:21 (pdns_server+0x33fc78)
#8 SVCBBaseRecordContent::setHints(SvcParam::SvcParamKey const&, std::vector<ComboAddress, std::allocator<ComboAddress>> const&) /work/pdns/pdns/dnsrecords.cc:768:14 (pdns_server+0x33fc78)
#9 PacketHandler::doAdditionalProcessing(DNSPacket&, std::unique_ptr<DNSPacket, std::default_delete<DNSPacket>>&) /work/pdns/pdns/packethandler.cc:565:16 (pdns_server+0x4ed330) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#10 PacketHandler::doQuestion(DNSPacket&) /work/pdns/pdns/packethandler.cc:1794:5 (pdns_server+0x4f79b4) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#11 PacketHandler::question(DNSPacket&) /work/pdns/pdns/packethandler.cc:1175:10 (pdns_server+0x4f649a) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#12 MultiThreadDistributor<DNSPacket, DNSPacket, PacketHandler>::distribute(int) /work/pdns/pdns/./distributor.hh:220:14 (pdns_server+0x260f70) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#13 MultiThreadDistributor<DNSPacket, DNSPacket, PacketHandler>::MultiThreadDistributor(int)::'lambda'()::operator()() const /work/pdns/pdns/./distributor.hh:179:25 (pdns_server+0x260b31) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#14 void std::__invoke_impl<void, MultiThreadDistributor<DNSPacket, DNSPacket, PacketHandler>::MultiThreadDistributor(int)::'lambda'()>(std::__invoke_other, MultiThreadDistributor<DNSPacket, DNSPacket, PacketHandler>::MultiThreadDistributor(int)::'lambda'()&&) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/invoke.h:61:14 (pdns_server+0x260b31)
#15 std::__invoke_result<MultiThreadDistributor<DNSPacket, DNSPacket, PacketHandler>::MultiThreadDistributor(int)::'lambda'()>::type std::__invoke<MultiThreadDistributor<DNSPacket, DNSPacket, PacketHandler>::MultiThreadDistributor(int)::'lambda'()>(MultiThreadDistributor<DNSPacket, DNSPacket, PacketHandler>::MultiThreadDistributor(int)::'lambda'()&&) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/invoke.h:96:14 (pdns_server+0x260b31)
#16 void std::thread::_Invoker<std::tuple<MultiThreadDistributor<DNSPacket, DNSPacket, PacketHandler>::MultiThreadDistributor(int)::'lambda'()>>::_M_invoke<0ul>(std::_Index_tuple<0ul>) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/std_thread.h:258:13 (pdns_server+0x260b31)
#17 std::thread::_Invoker<std::tuple<MultiThreadDistributor<DNSPacket, DNSPacket, PacketHandler>::MultiThreadDistributor(int)::'lambda'()>>::operator()() /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/std_thread.h:265:11 (pdns_server+0x260b31)
#18 std::thread::_State_impl<std::thread::_Invoker<std::tuple<MultiThreadDistributor<DNSPacket, DNSPacket, PacketHandler>::MultiThreadDistributor(int)::'lambda'()>>>::_M_run() /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/std_thread.h:210:13 (pdns_server+0x260b31)
#19 execute_native_thread_routine /usr/src/debug/gcc/gcc/libstdc++-v3/src/c++11/thread.cc:82:18 (libstdc++.so.6+0xd72c2) (BuildId: 6fe66a2d539a78c993bd2d377e00fad389220963)
Previous read of size 2 at 0x7b3400010350 by thread T39:
#0 SvcParam::getKey() const /work/pdns/pdns/./svc-records.hh:80:12 (pdns_server+0x3721f3) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#1 GenericDNSPacketWriter<std::vector<unsigned char, std::allocator<unsigned char>>>::xfrSvcParamKeyVals(std::set<SvcParam, std::less<SvcParam>, std::allocator<SvcParam>> const&) /work/pdns/pdns/dnswriter.cc:404:23 (pdns_server+0x3721f3)
#2 void HTTPSRecordContent::xfrPacket<GenericDNSPacketWriter<std::vector<unsigned char, std::allocator<unsigned char>>>>(GenericDNSPacketWriter<std::vector<unsigned char, std::allocator<unsigned char>>>&, bool) /work/pdns/pdns/dnsrecords.cc:348:1 (pdns_server+0x3349bd) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#3 HTTPSRecordContent::toPacket(GenericDNSPacketWriter<std::vector<unsigned char, std::allocator<unsigned char>>>&) /work/pdns/pdns/dnsrecords.cc:348:1 (pdns_server+0x3349bd)
#4 DNSRecordContent::serialize[abi:cxx11](DNSName const&, bool, bool) /work/pdns/pdns/./dnsparser.hh:215:11 (pdns_server+0x311140) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#5 DNSPacket::addRecord(DNSZoneRecord&&) /work/pdns/pdns/dnspacket.cc:177:68 (pdns_server+0x2fa894) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#6 PacketHandler::doAdditionalProcessing(DNSPacket&, std::unique_ptr<DNSPacket, std::default_delete<DNSPacket>>&) /work/pdns/pdns/packethandler.cc:542:8 (pdns_server+0x4eccf2) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#7 PacketHandler::doQuestion(DNSPacket&) /work/pdns/pdns/packethandler.cc:1794:5 (pdns_server+0x4f79b4) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#8 PacketHandler::question(DNSPacket&) /work/pdns/pdns/packethandler.cc:1175:10 (pdns_server+0x4f649a) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#9 MultiThreadDistributor<DNSPacket, DNSPacket, PacketHandler>::distribute(int) /work/pdns/pdns/./distributor.hh:220:14 (pdns_server+0x260f70) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#10 MultiThreadDistributor<DNSPacket, DNSPacket, PacketHandler>::MultiThreadDistributor(int)::'lambda'()::operator()() const /work/pdns/pdns/./distributor.hh:179:25 (pdns_server+0x260b31) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#11 void std::__invoke_impl<void, MultiThreadDistributor<DNSPacket, DNSPacket, PacketHandler>::MultiThreadDistributor(int)::'lambda'()>(std::__invoke_other, MultiThreadDistributor<DNSPacket, DNSPacket, PacketHandler>::MultiThreadDistributor(int)::'lambda'()&&) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/invoke.h:61:14 (pdns_server+0x260b31)
#12 std::__invoke_result<MultiThreadDistributor<DNSPacket, DNSPacket, PacketHandler>::MultiThreadDistributor(int)::'lambda'()>::type std::__invoke<MultiThreadDistributor<DNSPacket, DNSPacket, PacketHandler>::MultiThreadDistributor(int)::'lambda'()>(MultiThreadDistributor<DNSPacket, DNSPacket, PacketHandler>::MultiThreadDistributor(int)::'lambda'()&&) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/invoke.h:96:14 (pdns_server+0x260b31)
#13 void std::thread::_Invoker<std::tuple<MultiThreadDistributor<DNSPacket, DNSPacket, PacketHandler>::MultiThreadDistributor(int)::'lambda'()>>::_M_invoke<0ul>(std::_Index_tuple<0ul>) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/std_thread.h:258:13 (pdns_server+0x260b31)
#14 std::thread::_Invoker<std::tuple<MultiThreadDistributor<DNSPacket, DNSPacket, PacketHandler>::MultiThreadDistributor(int)::'lambda'()>>::operator()() /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/std_thread.h:265:11 (pdns_server+0x260b31)
#15 std::thread::_State_impl<std::thread::_Invoker<std::tuple<MultiThreadDistributor<DNSPacket, DNSPacket, PacketHandler>::MultiThreadDistributor(int)::'lambda'()>>>::_M_run() /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/std_thread.h:210:13 (pdns_server+0x260b31)
#16 execute_native_thread_routine /usr/src/debug/gcc/gcc/libstdc++-v3/src/c++11/thread.cc:82:18 (libstdc++.so.6+0xd72c2) (BuildId: 6fe66a2d539a78c993bd2d377e00fad389220963)
Thread T33 'pdns/distributo' (tid=102833, running) created by thread T17 at:
#0 pthread_create <null> (pdns_server+0x1904e6) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#1 __gthread_create /usr/src/debug/gcc/gcc-build/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:663:35 (libstdc++.so.6+0xd73a9) (BuildId: 6fe66a2d539a78c993bd2d377e00fad389220963)
#2 std::thread::_M_start_thread(std::unique_ptr<std::thread::_State, std::default_delete<std::thread::_State>>, void (*)()) /usr/src/debug/gcc/gcc/libstdc++-v3/src/c++11/thread.cc:147:37 (libstdc++.so.6+0xd73a9)
#3 Distributor<DNSPacket, DNSPacket, PacketHandler>::Create(int) /work/pdns/pdns/./distributor.hh:134:18 (pdns_server+0x256d23) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#4 qthread(unsigned int) /work/pdns/pdns/auth-main.cc:536:25 (pdns_server+0x256d23)
#5 void std::__invoke_impl<void, void (*)(unsigned int), unsigned int>(std::__invoke_other, void (*&&)(unsigned int), unsigned int&&) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/invoke.h:61:14 (pdns_server+0x2635f0) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#6 std::__invoke_result<void (*)(unsigned int), unsigned int>::type std::__invoke<void (*)(unsigned int), unsigned int>(void (*&&)(unsigned int), unsigned int&&) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/invoke.h:96:14 (pdns_server+0x2635f0)
#7 void std::thread::_Invoker<std::tuple<void (*)(unsigned int), unsigned int>>::_M_invoke<0ul, 1ul>(std::_Index_tuple<0ul, 1ul>) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/std_thread.h:258:13 (pdns_server+0x2635f0)
#8 std::thread::_Invoker<std::tuple<void (*)(unsigned int), unsigned int>>::operator()() /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/std_thread.h:265:11 (pdns_server+0x2635f0)
#9 std::thread::_State_impl<std::thread::_Invoker<std::tuple<void (*)(unsigned int), unsigned int>>>::_M_run() /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/std_thread.h:210:13 (pdns_server+0x2635f0)
#10 execute_native_thread_routine /usr/src/debug/gcc/gcc/libstdc++-v3/src/c++11/thread.cc:82:18 (libstdc++.so.6+0xd72c2) (BuildId: 6fe66a2d539a78c993bd2d377e00fad389220963)
Thread T39 'pdns/distributo' (tid=102837, running) created by thread T19 at:
#0 pthread_create <null> (pdns_server+0x1904e6) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#1 __gthread_create /usr/src/debug/gcc/gcc-build/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:663:35 (libstdc++.so.6+0xd73a9) (BuildId: 6fe66a2d539a78c993bd2d377e00fad389220963)
#2 std::thread::_M_start_thread(std::unique_ptr<std::thread::_State, std::default_delete<std::thread::_State>>, void (*)()) /usr/src/debug/gcc/gcc/libstdc++-v3/src/c++11/thread.cc:147:37 (libstdc++.so.6+0xd73a9)
#3 Distributor<DNSPacket, DNSPacket, PacketHandler>::Create(int) /work/pdns/pdns/./distributor.hh:134:18 (pdns_server+0x256d23) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#4 qthread(unsigned int) /work/pdns/pdns/auth-main.cc:536:25 (pdns_server+0x256d23)
#5 void std::__invoke_impl<void, void (*)(unsigned int), unsigned int>(std::__invoke_other, void (*&&)(unsigned int), unsigned int&&) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/invoke.h:61:14 (pdns_server+0x2635f0) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593)
#6 std::__invoke_result<void (*)(unsigned int), unsigned int>::type std::__invoke<void (*)(unsigned int), unsigned int>(void (*&&)(unsigned int), unsigned int&&) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/invoke.h:96:14 (pdns_server+0x2635f0)
#7 void std::thread::_Invoker<std::tuple<void (*)(unsigned int), unsigned int>>::_M_invoke<0ul, 1ul>(std::_Index_tuple<0ul, 1ul>) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/std_thread.h:258:13 (pdns_server+0x2635f0)
#8 std::thread::_Invoker<std::tuple<void (*)(unsigned int), unsigned int>>::operator()() /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/std_thread.h:265:11 (pdns_server+0x2635f0)
#9 std::thread::_State_impl<std::thread::_Invoker<std::tuple<void (*)(unsigned int), unsigned int>>>::_M_run() /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../include/c++/12.2.1/bits/std_thread.h:210:13 (pdns_server+0x2635f0)
#10 execute_native_thread_routine /usr/src/debug/gcc/gcc/libstdc++-v3/src/c++11/thread.cc:82:18 (libstdc++.so.6+0xd72c2) (BuildId: 6fe66a2d539a78c993bd2d377e00fad389220963)
SUMMARY: ThreadSanitizer: data race (/work/pdns-rgacogne/pdns/pdns_server+0x211b7c) (BuildId: 384adc19a67695435bd5e89d0a77f562561f4593) in operator delete(void*)
```
To prevent this issue, this commit wraps the internal `std::set` in a
mutex. In theory this will cause a performance impact, but in practice
I did not find it to be noticeable.
If we ever do, a different solution would be to duplicate the content
of the SVCB/HTTPS records before modifying them.
(cherry picked from commit 18d5647)
rgacogne
added a commit
that referenced
this issue
May 11, 2023
…mode
There is an actual race when one thread, likely the console, changes
the health-check mode of a given backend just when the health-check
thread is determining whether it should send a health-check probe.
We are fine with getting a wrong value in the health-check thread,
as long as we eventually get the new one, so let's not worry about it
and add a TSAN suppression.
The TSAN report was:
```
WARNING: ThreadSanitizer: data race (pid=5301)
Read of size 1 at 0x7b78000002ae by thread T11:
#0 DownstreamState::healthCheckRequired(std::optional<long>) /__w/pdns/pdns/pdns/dnsdistdist/dnsdist-backend.cc:555:16 (dnsdist+0x18f003)
#1 healthChecksThread() /__w/pdns/pdns/pdns/dnsdistdist/dnsdist.cc:2046:17 (dnsdist+0x811ea9)
#2 void std::__invoke_impl<void, void (*)()>(std::__invoke_other, void (*&&)()) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/invoke.h:60:14 (dnsdist+0x1dfe39)
#3 std::__invoke_result<void (*)()>::type std::__invoke<void (*)()>(void (*&&)()) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/invoke.h:95:14 (dnsdist+0x1dfe39)
#4 void std::thread::_Invoker<std::tuple<void (*)()> >::_M_invoke<0ul>(std::_Index_tuple<0ul>) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/thread:264:13 (dnsdist+0x1dfe39)
#5 std::thread::_Invoker<std::tuple<void (*)()> >::operator()() /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/thread:271:11 (dnsdist+0x1dfe39)
#6 std::thread::_State_impl<std::thread::_Invoker<std::tuple<void (*)()> > >::_M_run() /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/thread:215:13 (dnsdist+0x1dfe39)
#7 <null> <null> (libstdc++.so.6+0xceecf)
Previous write of size 1 at 0x7b78000002ae by thread T21 (mutexes: write M189):
#0 std::enable_if<IsOptional<DownstreamState>::value, setupLuaBindings(LuaContext&, bool)::$_15>::type LuaContext::readIntoFunction<void, LuaContext::Binder<void LuaContext::registerFunctionImpl<setupLuaBindings(LuaContext&, bool)::$_15, void, DownstreamState, boost::optional<bool> >(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, setupLuaBindings(LuaContext&, bool)::$_15, LuaContext::tag<DownstreamState>, LuaContext::tag<void (boost::optional<bool>)>)::'lambda'(std::shared_ptr<DownstreamState> const&, boost::optional<bool>)&, std::shared_ptr<DownstreamState> const&>&, boost::optional<bool> >(lua_State*, LuaContext::tag<setupLuaBindings(LuaContext&, bool)::$_15>, void&&, int, LuaContext::tag<DownstreamState>, LuaContext::tag<boost::optional<bool> >) /__w/pdns/pdns/pdns/dnsdistdist/./ext/luawrapper/include/LuaContext.hpp (dnsdist+0x4b6ab2)
#1 std::enable_if<!(IsOptional<DownstreamState>::value), setupLuaBindings(LuaContext&, bool)::$_15>::type LuaContext::readIntoFunction<void, void LuaContext::registerFunctionImpl<setupLuaBindings(LuaContext&, bool)::$_15, void, DownstreamState, boost::optional<bool> >(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, setupLuaBindings(LuaContext&, bool)::$_15, LuaContext::tag<DownstreamState>, LuaContext::tag<void (boost::optional<bool>)>)::'lambda'(std::shared_ptr<DownstreamState> const&, boost::optional<bool>)&, std::shared_ptr<DownstreamState>, boost::optional<bool> >(lua_State*, LuaContext::tag<setupLuaBindings(LuaContext&, bool)::$_15>, void&&, int, LuaContext::tag<DownstreamState>, LuaContext::tag<boost::optional<bool> >) /__w/pdns/pdns/pdns/dnsdistdist/./ext/luawrapper/include/LuaContext.hpp:1803:16 (dnsdist+0x4b6ab2)
#2 std::enable_if<(std::integral_constant<bool, true>::value) && (!(std::is_void<setupLuaBindings(LuaContext&, bool)::$_15>::value)), LuaContext::PushedObject>::type LuaContext::Pusher<void (std::shared_ptr<DownstreamState>, boost::optional<bool>), void>::callback2<void LuaContext::registerFunctionImpl<setupLuaBindings(LuaContext&, bool)::$_15, void, DownstreamState, boost::optional<bool> >(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, setupLuaBindings(LuaContext&, bool)::$_15, LuaContext::tag<DownstreamState>, LuaContext::tag<void (boost::optional<bool>)>)::'lambda'(std::shared_ptr<DownstreamState> const&, boost::optional<bool>)&>(lua_State*, setupLuaBindings(LuaContext&, bool)::$_15&&, int) /__w/pdns/pdns/pdns/dnsdistdist/./ext/luawrapper/include/LuaContext.hpp:2443:9 (dnsdist+0x4b6ab2)
#3 LuaContext::PushedObject LuaContext::Pusher<void (std::shared_ptr<DownstreamState>, boost::optional<bool>), void>::callback<void LuaContext::registerFunctionImpl<setupLuaBindings(LuaContext&, bool)::$_15, void, DownstreamState, boost::optional<bool> >(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, setupLuaBindings(LuaContext&, bool)::$_15, LuaContext::tag<DownstreamState>, LuaContext::tag<void (boost::optional<bool>)>)::'lambda'(std::shared_ptr<DownstreamState> const&, boost::optional<bool>)>(lua_State*, setupLuaBindings(LuaContext&, bool)::$_15*, int) /__w/pdns/pdns/pdns/dnsdistdist/./ext/luawrapper/include/LuaContext.hpp:2405:20 (dnsdist+0x4b6ab2)
#4 std::enable_if<boost::has_trivial_destructor<setupLuaBindings(LuaContext&, bool)::$_15>::value, LuaContext::PushedObject>::type LuaContext::Pusher<void (std::shared_ptr<DownstreamState>, boost::optional<bool>), void>::push<void LuaContext::registerFunctionImpl<setupLuaBindings(LuaContext&, bool)::$_15, void, DownstreamState, boost::optional<bool> >(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, setupLuaBindings(LuaContext&, bool)::$_15, LuaContext::tag<DownstreamState>, LuaContext::tag<void (boost::optional<bool>)>)::'lambda'(std::shared_ptr<DownstreamState> const&, boost::optional<bool>)>(lua_State*, setupLuaBindings(LuaContext&, bool)::$_15)::'lambda'(lua_State*)::operator()(lua_State*) const /__w/pdns/pdns/pdns/dnsdistdist/./ext/luawrapper/include/LuaContext.hpp:2334:20 (dnsdist+0x4b6ab2)
#5 std::enable_if<boost::has_trivial_destructor<setupLuaBindings(LuaContext&, bool)::$_15>::value, LuaContext::PushedObject>::type LuaContext::Pusher<void (std::shared_ptr<DownstreamState>, boost::optional<bool>), void>::push<void LuaContext::registerFunctionImpl<setupLuaBindings(LuaContext&, bool)::$_15, void, DownstreamState, boost::optional<bool> >(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, setupLuaBindings(LuaContext&, bool)::$_15, LuaContext::tag<DownstreamState>, LuaContext::tag<void (boost::optional<bool>)>)::'lambda'(std::shared_ptr<DownstreamState> const&, boost::optional<bool>)>(lua_State*, setupLuaBindings(LuaContext&, bool)::$_15)::'lambda'(lua_State*)::__invoke(lua_State*) /__w/pdns/pdns/pdns/dnsdistdist/./ext/luawrapper/include/LuaContext.hpp:2330:31 (dnsdist+0x4b6ab2)
#6 <null> <null> (libluajit-5.1.so.2+0xa5e6)
#7 boost::optional<boost::variant<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::shared_ptr<DownstreamState>, ClientState*, std::unordered_map<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, double, std::hash<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::equal_to<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, double> > > > > LuaContext::call<boost::optional<boost::variant<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::shared_ptr<DownstreamState>, ClientState*, std::unordered_map<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, double, std::hash<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::equal_to<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, double> > > > > >(lua_State*, LuaContext::PushedObject) /__w/pdns/pdns/pdns/dnsdistdist/./ext/luawrapper/include/LuaContext.hpp:1413:29 (dnsdist+0x1c2b4b)
#8 boost::optional<boost::variant<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::shared_ptr<DownstreamState>, ClientState*, std::unordered_map<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, double, std::hash<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::equal_to<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, double> > > > > LuaContext::executeCode<boost::optional<boost::variant<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::shared_ptr<DownstreamState>, ClientState*, std::unordered_map<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, double, std::hash<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::equal_to<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, double> > > > > >(char const*) /__w/pdns/pdns/pdns/dnsdistdist/./ext/luawrapper/include/LuaContext.hpp:324:16 (dnsdist+0x1c2b4b)
#9 boost::optional<boost::variant<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::shared_ptr<DownstreamState>, ClientState*, std::unordered_map<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, double, std::hash<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::equal_to<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, double> > > > > LuaContext::executeCode<boost::optional<boost::variant<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::shared_ptr<DownstreamState>, ClientState*, std::unordered_map<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, double, std::hash<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::equal_to<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, double> > > > > >(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) /__w/pdns/pdns/pdns/dnsdistdist/./ext/luawrapper/include/LuaContext.hpp:301:16 (dnsdist+0x1bf450)
#10 controlClientThread(ConsoleConnection&&) /__w/pdns/pdns/pdns/dnsdistdist/dnsdist-console.cc:897:27 (dnsdist+0x1bf450)
#11 boost::optional<boost::variant<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::shared_ptr<DownstreamState>, ClientState*, std::unordered_map<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, double, std::hash<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::equal_to<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, double> > > > > LuaContext::executeCode<boost::optional<boost::variant<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::shared_ptr<DownstreamState>, ClientState*, std::unordered_map<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, double, std::hash<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::equal_to<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, double> > > > > >(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) /__w/pdns/pdns/pdns/dnsdistdist/./ext/luawrapper/include/LuaContext.hpp:301:16 (dnsdist+0x1bf450)
#12 controlClientThread(ConsoleConnection&&) /__w/pdns/pdns/pdns/dnsdistdist/dnsdist-console.cc:897:27 (dnsdist+0x1bf450)
#13 void std::__invoke_impl<void, void (*)(ConsoleConnection&&), ConsoleConnection>(std::__invoke_other, void (*&&)(ConsoleConnection&&), ConsoleConnection&&) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/invoke.h:60:14 (dnsdist+0x1c76f3)
#14 std::__invoke_result<void (*)(ConsoleConnection&&), ConsoleConnection>::type std::__invoke<void (*)(ConsoleConnection&&), ConsoleConnection>(void (*&&)(ConsoleConnection&&), ConsoleConnection&&) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/invoke.h:95:14 (dnsdist+0x1c76f3)
#15 void std::thread::_Invoker<std::tuple<void (*)(ConsoleConnection&&), ConsoleConnection> >::_M_invoke<0ul, 1ul>(std::_Index_tuple<0ul, 1ul>) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/thread:264:13 (dnsdist+0x1c76f3)
#16 std::thread::_Invoker<std::tuple<void (*)(ConsoleConnection&&), ConsoleConnection> >::operator()() /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/thread:271:11 (dnsdist+0x1c76f3)
#17 std::thread::_State_impl<std::thread::_Invoker<std::tuple<void (*)(ConsoleConnection&&), ConsoleConnection> > >::_M_run() /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/thread:215:13 (dnsdist+0x1c76f3)
#18 <null> <null> (libstdc++.so.6+0xceecf)
As if synchronized via sleep:
#0 healthChecksThread() /__w/pdns/pdns/pdns/dnsdistdist/dnsdist.cc:2034:5 (dnsdist+0xc77e8)
#1 void std::__invoke_impl<void, void (*)()>(std::__invoke_other, void (*&&)()) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/invoke.h:60:14 (dnsdist+0x811b8e)
#2 std::__invoke_result<void (*)()>::type std::__invoke<void (*)()>(void (*&&)()) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/invoke.h:95:14 (dnsdist+0x811b8e)
#3 void std::thread::_Invoker<std::tuple<void (*)()> >::_M_invoke<0ul>(std::_Index_tuple<0ul>) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/thread:264:13 (dnsdist+0x811b8e)
#4 std::thread::_Invoker<std::tuple<void (*)()> >::operator()() /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/thread:271:11 (dnsdist+0x811b8e)
#5 std::thread::_State_impl<std::thread::_Invoker<std::tuple<void (*)()> > >::_M_run() /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/thread:215:13 (dnsdist+0x811b8e)
#6 <null> <null> (dnsdist+0x1dfe39)
#7 operator new(unsigned long, std::align_val_t) <null> (libstdc++.so.6+0xceecf)
Location is heap block of size 2880 at 0x7b7800000000 allocated by main thread:
#0 __gnu_cxx::new_allocator<std::_Sp_counted_ptr_inplace<DownstreamState, std::allocator<DownstreamState>, (__gnu_cxx::_Lock_policy)2> >::allocate(unsigned long, void const*) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/ext/new_allocator.h:112:31 (dnsdist+0x13f29c)
#1 std::allocator_traits<std::allocator<std::_Sp_counted_ptr_inplace<DownstreamState, std::allocator<DownstreamState>, (__gnu_cxx::_Lock_policy)2> > >::allocate(std::allocator<std::_Sp_counted_ptr_inplace<DownstreamState, std::allocator<DownstreamState>, (__gnu_cxx::_Lock_policy)2> >&, unsigned long) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/alloc_traits.h:460:20 (dnsdist+0x13f29c)
#2 std::__allocated_ptr<std::allocator<std::_Sp_counted_ptr_inplace<DownstreamState, std::allocator<DownstreamState>, (__gnu_cxx::_Lock_policy)2> > > std::__allocate_guarded<std::allocator<std::_Sp_counted_ptr_inplace<DownstreamState, std::allocator<DownstreamState>, (__gnu_cxx::_Lock_policy)2> > >(std::allocator<std::_Sp_counted_ptr_inplace<DownstreamState, std::allocator<DownstreamState>, (__gnu_cxx::_Lock_policy)2> >&) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/allocated_ptr.h:97:21 (dnsdist+0x13f29c)
#3 std::__shared_count<(__gnu_cxx::_Lock_policy)2>::__shared_count<DownstreamState, std::allocator<DownstreamState>, DownstreamState::Config, std::shared_ptr<TLSCtx>, bool>(DownstreamState*&, std::_Sp_alloc_shared_tag<std::allocator<DownstreamState> >, DownstreamState::Config&&, std::shared_ptr<TLSCtx>&&, bool&&) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/shared_ptr_base.h:680:19 (dnsdist+0x13f29c)
#4 std::__shared_ptr<DownstreamState, (__gnu_cxx::_Lock_policy)2>::__shared_ptr<std::allocator<DownstreamState>, DownstreamState::Config, std::shared_ptr<TLSCtx>, bool>(std::_Sp_alloc_shared_tag<std::allocator<DownstreamState> >, DownstreamState::Config&&, std::shared_ptr<TLSCtx>&&, bool&&) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/shared_ptr_base.h:1371:14 (dnsdist+0x13f29c)
#5 std::shared_ptr<DownstreamState>::shared_ptr<std::allocator<DownstreamState>, DownstreamState::Config, std::shared_ptr<TLSCtx>, bool>(std::_Sp_alloc_shared_tag<std::allocator<DownstreamState> >, DownstreamState::Config&&, std::shared_ptr<TLSCtx>&&, bool&&) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/shared_ptr.h:408:4 (dnsdist+0x1db3be)
#6 std::shared_ptr<DownstreamState> std::allocate_shared<DownstreamState, std::allocator<DownstreamState>, DownstreamState::Config, std::shared_ptr<TLSCtx>, bool>(std::allocator<DownstreamState> const&, DownstreamState::Config&&, std::shared_ptr<TLSCtx>&&, bool&&) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/shared_ptr.h:859:14 (dnsdist+0x1db3be)
#7 std::shared_ptr<DownstreamState> std::make_shared<DownstreamState, DownstreamState::Config, std::shared_ptr<TLSCtx>, bool>(DownstreamState::Config&&, std::shared_ptr<TLSCtx>&&, bool&&) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/shared_ptr.h:875:14 (dnsdist+0x1db3be)
#8 setupLuaConfig(LuaContext&, bool, bool)::$_3::operator()(boost::variant<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::unordered_map<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::variant<bool, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::vector<std::pair<int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, std::function<std::tuple<DNSName, unsigned short, unsigned short> (DNSName const&, unsigned short, unsigned short, dnsheader*)> >, std::hash<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::equal_to<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, boost::variant<bool, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::vector<std::pair<int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, std::function<std::tuple<DNSName, unsigned short, unsigned short> (DNSName const&, unsigned short, unsigned short, dnsheader*)> > > > > >, boost::optional<int>) const /__w/pdns/pdns/pdns/dnsdistdist/dnsdist-lua.cc:619:37 (dnsdist+0x1db3be)
#9 tor<char> > > > >, std::function<std::tuple<DNSName, unsigned short, unsigned short> (DNSName const&, unsigned short, unsigned short, dnsheader*)> > > > > >, boost::optional<int>), void>::callback2<setupLuaConfig(LuaContext&, bool, bool)::$_3&>(lua_State*, setupLuaConfig(LuaContext&, bool, bool)::$_3&, int) /__w/pdns/pdns/pdns/dnsdistdist/./ext/luawrapper/include/LuaContext.hpp:2436:31 (dnsdist+0x69065d)
#10 LuaContext::PushedObject LuaContext::Pusher<std::shared_ptr<DownstreamState> (boost::variant<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::unordered_map<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::variant<bool, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::vector<std::pair<int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, std::function<std::tuple<DNSName, unsigned short, unsigned short> (DNSName const&, unsigned short, unsigned short, dnsheader*)> >, std::hash<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::equal_to<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, boost::variant<bool, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::vector<std::pair<int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, std::function<std::tuple<DNSName, unsigned short, unsigned short> (DNSName const&, unsigned short, unsigned short, dnsheader*)> > > > > >, boost::optional<int>), void>::callback<setupLuaConfig(LuaContext&, bool, bool)::$_3>(lua_State*, setupLuaConfig(LuaContext&, bool, bool)::$_3*, int) /__w/pdns/pdns/pdns/dnsdistdist/./ext/luawrapper/include/LuaContext.hpp:2405:20 (dnsdist+0x69065d)
#11 std::enable_if<boost::has_trivial_destructor<setupLuaConfig(LuaContext&, bool, bool)::$_3>::value, LuaContext::PushedObject>::type LuaContext::Pusher<std::shared_ptr<DownstreamState> (boost::variant<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::unordered_map<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::variant<bool, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::vector<std::pair<int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, std::function<std::tuple<DNSName, unsigned short, unsigned short> (DNSName const&, unsigned short, unsigned short, dnsheader*)> >, std::hash<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::equal_to<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, boost::variant<bool, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::vector<std::pair<int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, std::function<std::tuple<DNSName, unsigned short, unsigned short> (DNSName const&, unsigned short, unsigned short, dnsheader*)> > > > > >, boost::optional<int>), void>::push<setupLuaConfig(LuaContext&, bool, bool)::$_3>(lua_State*, setupLuaConfig(LuaContext&, bool, bool)::$_3)::'lambda'(lua_State*)::operator()(lua_State*) const /__w/pdns/pdns/pdns/dnsdistdist/./ext/luawrapper/include/LuaContext.hpp:2334:20 (dnsdist+0x69065d)
#12 std::enable_if<boost::has_trivial_destructor<setupLuaConfig(LuaContext&, bool, bool)::$_3>::value, LuaContext::PushedObject>::type LuaContext::Pusher<std::shared_ptr<DownstreamState> (boost::variant<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::unordered_map<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::variant<bool, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::vector<std::pair<int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, std::function<std::tuple<DNSName, unsigned short, unsigned short> (DNSName const&, unsigned short, unsigned short, dnsheader*)> >, std::hash<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::equal_to<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, boost::variant<bool, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::vector<std::pair<int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, std::function<std::tuple<DNSName, unsigned short, unsigned short> (DNSName const&, unsigned short, unsigned short, dnsheader*)> > > > > >, boost::optional<int>), void>::push<setupLuaConfig(LuaContext&, bool, bool)::$_3>(lua_State*, setupLuaConfig(LuaContext&, bool, bool)::$_3)::'lambda'(lua_State*)::__invoke(lua_State*) /__w/pdns/pdns/pdns/dnsdistdist/./ext/luawrapper/include/LuaContext.hpp:2330:31 (dnsdist+0x69065d)
#13 <null> <null> (dnsdist+0x687942)
#14 <null> <null> (libluajit-5.1.so.2+0xa5e6)
#15 std::tuple<> LuaContext::call<std::tuple<> >(lua_State*, LuaContext::PushedObject) /__w/pdns/pdns/pdns/dnsdistdist/./ext/luawrapper/include/LuaContext.hpp:1413:29 (dnsdist+0x577e85)
#16 LuaContext::executeCode(std::istream&) /__w/pdns/pdns/pdns/dnsdistdist/./ext/luawrapper/include/LuaContext.hpp:267:9 (dnsdist+0x685db6)
#17 setupLua(LuaContext&, bool, bool, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) /__w/pdns/pdns/pdns/dnsdistdist/dnsdist-lua.cc:3025:10 (dnsdist+0x67b759)
#18 main /__w/pdns/pdns/pdns/dnsdistdist/dnsdist.cc:2668:17 (dnsdist+0x809d2c)
Mutex M189 (0x55801da4cdf0) created at:
#0 pthread_mutex_lock <null> (dnsdist+0xe74f8)
#1 __gthread_mutex_lock(pthread_mutex_t*) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/x86_64-linux-gnu/c++/10/bits/gthr-default.h:749:12 (dnsdist+0x80c177)
#2 std::mutex::lock() /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/std_mutex.h:100:17 (dnsdist+0x80c177)
#3 std::lock_guard<std::mutex>::lock_guard(std::mutex&) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/std_mutex.h:159:19 (dnsdist+0x80c177)
#4 LockGuardedHolder<LuaContext>::LockGuardedHolder(LuaContext&, std::mutex&) /__w/pdns/pdns/pdns/dnsdistdist/./lock.hh:209:60 (dnsdist+0x80c177)
#5 LockGuarded<LuaContext>::lock() /__w/pdns/pdns/pdns/dnsdistdist/./lock.hh:289:12 (dnsdist+0x80c177)
#6 main /__w/pdns/pdns/pdns/dnsdistdist/dnsdist.cc:2668:34 (dnsdist+0x809d0c)
Thread T11 'dnsdist/healthC' (tid=5313, running) created by main thread at:
#0 pthread_create <null> (dnsdist+0xca21d)
#1 std::thread::_M_start_thread(std::unique_ptr<std::thread::_State, std::default_delete<std::thread::_State> >, void (*)()) <null> (libstdc++.so.6+0xcf144)
#2 main /__w/pdns/pdns/pdns/dnsdistdist/dnsdist.cc:2938:12 (dnsdist+0x80b06e)
Thread T21 'dnsdist/conscli' (tid=5325, finished) created by thread T5 at:
#0 pthread_create <null> (dnsdist+0xca21d)
#1 std::thread::_M_start_thread(std::unique_ptr<std::thread::_State, std::default_delete<std::thread::_State> >, void (*)()) <null> (libstdc++.so.6+0xcf144)
#2 void std::__invoke_impl<void, void (*)(int, ComboAddress), int, ComboAddress>(std::__invoke_other, void (*&&)(int, ComboAddress), int&&, ComboAddress&&) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/invoke.h:60:14 (dnsdist+0x6c0435)
#3 std::__invoke_result<void (*)(int, ComboAddress), int, ComboAddress>::type std::__invoke<void (*)(int, ComboAddress), int, ComboAddress>(void (*&&)(int, ComboAddress), int&&, ComboAddress&&) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/invoke.h:95:14 (dnsdist+0x6c0435)
#4 void std::thread::_Invoker<std::tuple<void (*)(int, ComboAddress), int, ComboAddress> >::_M_invoke<0ul, 1ul, 2ul>(std::_Index_tuple<0ul, 1ul, 2ul>) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/thread:264:13 (dnsdist+0x6c0435)
#5 std::thread::_Invoker<std::tuple<void (*)(int, ComboAddress), int, ComboAddress> >::operator()() /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/thread:271:11 (dnsdist+0x6c0435)
#6 std::thread::_State_impl<std::thread::_Invoker<std::tuple<void (*)(int, ComboAddress), int, ComboAddress> > >::_M_run() /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/thread:215:13 (dnsdist+0x6c0435)
#7 <null> <null> (libstdc++.so.6+0xceecf)
```
rgacogne
added a commit
that referenced
this issue
Aug 28, 2023
We used to get a index from OpenSSL when the first incoming or
outgoing TLS connection was created. That index is later used
to store application-related data along the TLS connection, to
be able to access it in callbacks called from inside the OpenSSL
library.
Unfortunately the atomic flag construction used was racy: if a second
connection is created while the first one is still getting the index,
it could be reading the initial value (-1) instead of the actual index,
which might prevent the callback from working properly because they
cannot retrieve the necessary data. The good news is that this should
not have a serious impact: a TLS session might not be properly resumed
while it should have been, leading to a full TLS session negotiation.
This commit fixes the race by using a full mutex and only releasing
it once the value has been computed. In order to avoid a performance
penalty, the index is now computed when a TLS connection _context_
is created, instead of a TLS connection. TLS contexts should be
reused for a large number of connections, and mostly created during
startup or in the first few seconds of the application.
The race was reported by Thread Sanitizer during the
`test_TLS.py::TestTLSFrontendLimits::testTCPConnsPerTLSFrontend`
regression test as:
```
WARNING: ThreadSanitizer: data race (pid=120466)
Read of size 4 at 0x55a12bf3d758 by thread T4:
#0 OpenSSLTLSConnection::OpenSSLTLSConnection(int, timeval const&, std::shared_ptr<OpenSSLFrontendContext>) /work/pdns/pdns/dnsdistdist/tcpiohandler.cc:106 (dnsdist+0x97ece8) (BuildId: ad82581368352777fda41d4b4145ba8ec738044c)
#1 std::__detail::_MakeUniq<OpenSSLTLSConnection>::__single_object std::make_unique<OpenSSLTLSConnection, int&, timeval const&, std::shared_ptr<OpenSSLFrontendContext>&>(int&, timeval const&, std::shared_ptr<OpenSSLFrontendContext>&) /usr/include/c++/13.2.1/bits/unique_ptr.h:1070 (dnsdist+0x97eff6) (BuildId: ad82581368352777fda41d4b4145ba8ec738044c)
#2 OpenSSLTLSIOCtx::getConnection(int, timeval const&, long) /work/pdns/pdns/dnsdistdist/tcpiohandler.cc:797 (dnsdist+0x97eff6)
#3 TCPIOHandler::TCPIOHandler(int, timeval const&, std::shared_ptr<TLSCtx>, long) /work/pdns/pdns/dnsdistdist/tcpiohandler.hh:246 (dnsdist+0x88c24f) (BuildId: ad82581368352777fda41d4b4145ba8ec738044c)
#4 IncomingTCPConnectionState::IncomingTCPConnectionState(ConnectionInfo&&, TCPClientThreadData&, timeval const&) /work/pdns/pdns/dnsdistdist/dnsdist-tcp-upstream.hh:29 (dnsdist+0x88c24f)
#5 void std::_Construct<IncomingTCPConnectionState, ConnectionInfo, TCPClientThreadData&, timeval&>(IncomingTCPConnectionState*, ConnectionInfo&&, TCPClientThreadData&, timeval&) /usr/include/c++/13.2.1/bits/stl_construct.h:119 (dnsdist+0x878b1e) (BuildId: ad82581368352777fda41d4b4145ba8ec738044c)
#6 void std::allocator_traits<std::allocator<void> >::construct<IncomingTCPConnectionState, ConnectionInfo, TCPClientThreadData&, timeval&>(std::allocator<void>&, IncomingTCPConnectionState*, ConnectionInfo&&, TCPClientThreadData&, timeval&) /usr/include/c++/13.2.1/bits/alloc_traits.h:660 (dnsdist+0x878b1e)
#7 std::_Sp_counted_ptr_inplace<IncomingTCPConnectionState, std::allocator<void>, (__gnu_cxx::_Lock_policy)2>::_Sp_counted_ptr_inplace<ConnectionInfo, TCPClientThreadData&, timeval&>(std::allocator<void>, ConnectionInfo&&, TCPClientThreadData&, timeval&) /usr/include/c++/13.2.1/bits/shared_ptr_base.h:604 (dnsdist+0x878b1e)
#8 std::__shared_count<(__gnu_cxx::_Lock_policy)2>::__shared_count<IncomingTCPConnectionState, std::allocator<void>, ConnectionInfo, TCPClientThreadData&, timeval&>(IncomingTCPConnectionState*&, std::_Sp_alloc_shared_tag<std::allocator<void> >, ConnectionInfo&&, TCPClientThreadData&, timeval&) /usr/include/c++/13.2.1/bits/shared_ptr_base.h:971 (dnsdist+0x878b1e)
#9 std::__shared_ptr<IncomingTCPConnectionState, (__gnu_cxx::_Lock_policy)2>::__shared_ptr<std::allocator<void>, ConnectionInfo, TCPClientThreadData&, timeval&>(std::_Sp_alloc_shared_tag<std::allocator<void> >, ConnectionInfo&&, TCPClientThreadData&, timeval&) /usr/include/c++/13.2.1/bits/shared_ptr_base.h:1712 (dnsdist+0x878b1e)
#10 std::shared_ptr<IncomingTCPConnectionState>::shared_ptr<std::allocator<void>, ConnectionInfo, TCPClientThreadData&, timeval&>(std::_Sp_alloc_shared_tag<std::allocator<void> >, ConnectionInfo&&, TCPClientThreadData&, timeval&) /usr/include/c++/13.2.1/bits/shared_ptr.h:464 (dnsdist+0x878b1e)
#11 std::shared_ptr<std::enable_if<!std::is_array<IncomingTCPConnectionState>::value, IncomingTCPConnectionState>::type> std::make_shared<IncomingTCPConnectionState, ConnectionInfo, TCPClientThreadData&, timeval&>(ConnectionInfo&&, TCPClientThreadData&, timeval&) /usr/include/c++/13.2.1/bits/shared_ptr.h:1010 (dnsdist+0x878b1e)
#12 handleIncomingTCPQuery /work/pdns/pdns/dnsdistdist/dnsdist-tcp.cc:1118 (dnsdist+0x878b1e)
#13 void std::__invoke_impl<void, void (*&)(int, boost::any&), int, boost::any&>(std::__invoke_other, void (*&)(int, boost::any&), int&&, boost::any&) /usr/include/c++/13.2.1/bits/invoke.h:61 (dnsdist+0x32d951) (BuildId: ad82581368352777fda41d4b4145ba8ec738044c)
#14 std::enable_if<is_invocable_r_v<void, void (*&)(int, boost::any&), int, boost::any&>, void>::type std::__invoke_r<void, void (*&)(int, boost::any&), int, boost::any&>(void (*&)(int, boost::any&), int&&, boost::any&) /usr/include/c++/13.2.1/bits/invoke.h:111 (dnsdist+0x32d951)
#15 std::_Function_handler<void (int, boost::any&), void (*)(int, boost::any&)>::_M_invoke(std::_Any_data const&, int&&, boost::any&) /usr/include/c++/13.2.1/bits/std_function.h:290 (dnsdist+0x32d951)
#16 std::function<void (int, boost::any&)>::operator()(int, boost::any&) const /usr/include/c++/13.2.1/bits/std_function.h:591 (dnsdist+0x98fc0f) (BuildId: ad82581368352777fda41d4b4145ba8ec738044c)
#17 EpollFDMultiplexer::run(timeval*, int) /work/pdns/pdns/dnsdistdist/epollmplexer.cc:190 (dnsdist+0x98fc0f)
#18 tcpClientThread /work/pdns/pdns/dnsdistdist/dnsdist-tcp.cc:1251 (dnsdist+0x86cb7f) (BuildId: ad82581368352777fda41d4b4145ba8ec738044c)
#19 void std::__invoke_impl<void, void (*)(pdns::channel::Receiver<ConnectionInfo, std::default_delete<ConnectionInfo> >&&, pdns::channel::Receiver<CrossProtocolQuery, std::default_delete<CrossProtocolQuery> >&&, pdns::channel::Receiver<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, pdns::channel::Sender<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, std::vector<ClientState*, std::allocator<ClientState*> >), pdns::channel::Receiver<ConnectionInfo, std::default_delete<ConnectionInfo> >, pdns::channel::Receiver<CrossProtocolQuery, std::default_delete<CrossProtocolQuery> >, pdns::channel::Receiver<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >, pdns::channel::Sender<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >, std::vector<ClientState*, std::allocator<ClientState*> > >(std::__invoke_other, void (*&&)(pdns::channel::Receiver<ConnectionInfo, std::default_delete<ConnectionInfo> >&&, pdns::channel::Receiver<CrossProtocolQuery, std::default_delete<CrossProtocolQuery> >&&, pdns::channel::Receiver<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, pdns::channel::Sender<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, std::vector<ClientState*, std::allocator<ClientState*> >), pdns::channel::Receiver<ConnectionInfo, std::default_delete<ConnectionInfo> >&&, pdns::channel::Receiver<CrossProtocolQuery, std::default_delete<CrossProtocolQuery> >&&, pdns::channel::Receiver<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, pdns::channel::Sender<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, std::vector<ClientState*, std::allocator<ClientState*> >&&) /usr/include/c++/13.2.1/bits/invoke.h:61 (dnsdist+0x87aab1) (BuildId: ad82581368352777fda41d4b4145ba8ec738044c)
#20 std::__invoke_result<void (*)(pdns::channel::Receiver<ConnectionInfo, std::default_delete<ConnectionInfo> >&&, pdns::channel::Receiver<CrossProtocolQuery, std::default_delete<CrossProtocolQuery> >&&, pdns::channel::Receiver<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, pdns::channel::Sender<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, std::vector<ClientState*, std::allocator<ClientState*> >), pdns::channel::Receiver<ConnectionInfo, std::default_delete<ConnectionInfo> >, pdns::channel::Receiver<CrossProtocolQuery, std::default_delete<CrossProtocolQuery> >, pdns::channel::Receiver<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >, pdns::channel::Sender<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >, std::vector<ClientState*, std::allocator<ClientState*> > >::type std::__invoke<void (*)(pdns::channel::Receiver<ConnectionInfo, std::default_delete<ConnectionInfo> >&&, pdns::channel::Receiver<CrossProtocolQuery, std::default_delete<CrossProtocolQuery> >&&, pdns::channel::Receiver<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, pdns::channel::Sender<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, std::vector<ClientState*, std::allocator<ClientState*> >), pdns::channel::Receiver<ConnectionInfo, std::default_delete<ConnectionInfo> >, pdns::channel::Receiver<CrossProtocolQuery, std::default_delete<CrossProtocolQuery> >, pdns::channel::Receiver<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >, pdns::channel::Sender<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >, std::vector<ClientState*, std::allocator<ClientState*> > >(void (*&&)(pdns::channel::Receiver<ConnectionInfo, std::default_delete<ConnectionInfo> >&&, pdns::channel::Receiver<CrossProtocolQuery, std::default_delete<CrossProtocolQuery> >&&, pdns::channel::Receiver<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, pdns::channel::Sender<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, std::vector<ClientState*, std::allocator<ClientState*> >), pdns::channel::Receiver<ConnectionInfo, std::default_delete<ConnectionInfo> >&&, pdns::channel::Receiver<CrossProtocolQuery, std::default_delete<CrossProtocolQuery> >&&, pdns::channel::Receiver<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, pdns::channel::Sender<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, std::vector<ClientState*, std::allocator<ClientState*> >&&) /usr/include/c++/13.2.1/bits/invoke.h:96 (dnsdist+0x87aab1)
#21 void std::thread::_Invoker<std::tuple<void (*)(pdns::channel::Receiver<ConnectionInfo, std::default_delete<ConnectionInfo> >&&, pdns::channel::Receiver<CrossProtocolQuery, std::default_delete<CrossProtocolQuery> >&&, pdns::channel::Receiver<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, pdns::channel::Sender<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, std::vector<ClientState*, std::allocator<ClientState*> >), pdns::channel::Receiver<ConnectionInfo, std::default_delete<ConnectionInfo> >, pdns::channel::Receiver<CrossProtocolQuery, std::default_delete<CrossProtocolQuery> >, pdns::channel::Receiver<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >, pdns::channel::Sender<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >, std::vector<ClientState*, std::allocator<ClientState*> > > >::_M_invoke<0ul, 1ul, 2ul, 3ul, 4ul, 5ul>(std::_Index_tuple<0ul, 1ul, 2ul, 3ul, 4ul, 5ul>) /usr/include/c++/13.2.1/bits/std_thread.h:292 (dnsdist+0x87aab1)
#22 std::thread::_Invoker<std::tuple<void (*)(pdns::channel::Receiver<ConnectionInfo, std::default_delete<ConnectionInfo> >&&, pdns::channel::Receiver<CrossProtocolQuery, std::default_delete<CrossProtocolQuery> >&&, pdns::channel::Receiver<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, pdns::channel::Sender<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, std::vector<ClientState*, std::allocator<ClientState*> >), pdns::channel::Receiver<ConnectionInfo, std::default_delete<ConnectionInfo> >, pdns::channel::Receiver<CrossProtocolQuery, std::default_delete<CrossProtocolQuery> >, pdns::channel::Receiver<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >, pdns::channel::Sender<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >, std::vector<ClientState*, std::allocator<ClientState*> > > >::operator()() /usr/include/c++/13.2.1/bits/std_thread.h:299 (dnsdist+0x87aab1)
#23 std::thread::_State_impl<std::thread::_Invoker<std::tuple<void (*)(pdns::channel::Receiver<ConnectionInfo, std::default_delete<ConnectionInfo> >&&, pdns::channel::Receiver<CrossProtocolQuery, std::default_delete<CrossProtocolQuery> >&&, pdns::channel::Receiver<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, pdns::channel::Sender<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, std::vector<ClientState*, std::allocator<ClientState*> >), pdns::channel::Receiver<ConnectionInfo, std::default_delete<ConnectionInfo> >, pdns::channel::Receiver<CrossProtocolQuery, std::default_delete<CrossProtocolQuery> >, pdns::channel::Receiver<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >, pdns::channel::Sender<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >, std::vector<ClientState*, std::allocator<ClientState*> > > > >::_M_run() /usr/include/c++/13.2.1/bits/std_thread.h:244 (dnsdist+0x87aab1)
#24 execute_native_thread_routine /usr/src/debug/gcc/gcc/libstdc++-v3/src/c++11/thread.cc:104 (libstdc++.so.6+0xe1942) (BuildId: 207eb738c5976dd9aac1ae0640fc4de5946b547e)
Previous write of size 4 at 0x55a12bf3d758 by thread T3:
#0 OpenSSLTLSConnection::OpenSSLTLSConnection(int, timeval const&, std::shared_ptr<OpenSSLFrontendContext>) /work/pdns/pdns/dnsdistdist/tcpiohandler.cc:88 (dnsdist+0x97ed98) (BuildId: ad82581368352777fda41d4b4145ba8ec738044c)
#1 std::__detail::_MakeUniq<OpenSSLTLSConnection>::__single_object std::make_unique<OpenSSLTLSConnection, int&, timeval const&, std::shared_ptr<OpenSSLFrontendContext>&>(int&, timeval const&, std::shared_ptr<OpenSSLFrontendContext>&) /usr/include/c++/13.2.1/bits/unique_ptr.h:1070 (dnsdist+0x97eff6) (BuildId: ad82581368352777fda41d4b4145ba8ec738044c)
#2 OpenSSLTLSIOCtx::getConnection(int, timeval const&, long) /work/pdns/pdns/dnsdistdist/tcpiohandler.cc:797 (dnsdist+0x97eff6)
#3 TCPIOHandler::TCPIOHandler(int, timeval const&, std::shared_ptr<TLSCtx>, long) /work/pdns/pdns/dnsdistdist/tcpiohandler.hh:246 (dnsdist+0x88c24f) (BuildId: ad82581368352777fda41d4b4145ba8ec738044c)
#4 IncomingTCPConnectionState::IncomingTCPConnectionState(ConnectionInfo&&, TCPClientThreadData&, timeval const&) /work/pdns/pdns/dnsdistdist/dnsdist-tcp-upstream.hh:29 (dnsdist+0x88c24f)
#5 void std::_Construct<IncomingTCPConnectionState, ConnectionInfo, TCPClientThreadData&, timeval&>(IncomingTCPConnectionState*, ConnectionInfo&&, TCPClientThreadData&, timeval&) /usr/include/c++/13.2.1/bits/stl_construct.h:119 (dnsdist+0x878b1e) (BuildId: ad82581368352777fda41d4b4145ba8ec738044c)
#6 void std::allocator_traits<std::allocator<void> >::construct<IncomingTCPConnectionState, ConnectionInfo, TCPClientThreadData&, timeval&>(std::allocator<void>&, IncomingTCPConnectionState*, ConnectionInfo&&, TCPClientThreadData&, timeval&) /usr/include/c++/13.2.1/bits/alloc_traits.h:660 (dnsdist+0x878b1e)
#7 std::_Sp_counted_ptr_inplace<IncomingTCPConnectionState, std::allocator<void>, (__gnu_cxx::_Lock_policy)2>::_Sp_counted_ptr_inplace<ConnectionInfo, TCPClientThreadData&, timeval&>(std::allocator<void>, ConnectionInfo&&, TCPClientThreadData&, timeval&) /usr/include/c++/13.2.1/bits/shared_ptr_base.h:604 (dnsdist+0x878b1e)
#8 std::__shared_count<(__gnu_cxx::_Lock_policy)2>::__shared_count<IncomingTCPConnectionState, std::allocator<void>, ConnectionInfo, TCPClientThreadData&, timeval&>(IncomingTCPConnectionState*&, std::_Sp_alloc_shared_tag<std::allocator<void> >, ConnectionInfo&&, TCPClientThreadData&, timeval&) /usr/include/c++/13.2.1/bits/shared_ptr_base.h:971 (dnsdist+0x878b1e)
#9 std::__shared_ptr<IncomingTCPConnectionState, (__gnu_cxx::_Lock_policy)2>::__shared_ptr<std::allocator<void>, ConnectionInfo, TCPClientThreadData&, timeval&>(std::_Sp_alloc_shared_tag<std::allocator<void> >, ConnectionInfo&&, TCPClientThreadData&, timeval&) /usr/include/c++/13.2.1/bits/shared_ptr_base.h:1712 (dnsdist+0x878b1e)
#10 std::shared_ptr<IncomingTCPConnectionState>::shared_ptr<std::allocator<void>, ConnectionInfo, TCPClientThreadData&, timeval&>(std::_Sp_alloc_shared_tag<std::allocator<void> >, ConnectionInfo&&, TCPClientThreadData&, timeval&) /usr/include/c++/13.2.1/bits/shared_ptr.h:464 (dnsdist+0x878b1e)
#11 std::shared_ptr<std::enable_if<!std::is_array<IncomingTCPConnectionState>::value, IncomingTCPConnectionState>::type> std::make_shared<IncomingTCPConnectionState, ConnectionInfo, TCPClientThreadData&, timeval&>(ConnectionInfo&&, TCPClientThreadData&, timeval&) /usr/include/c++/13.2.1/bits/shared_ptr.h:1010 (dnsdist+0x878b1e)
#12 handleIncomingTCPQuery /work/pdns/pdns/dnsdistdist/dnsdist-tcp.cc:1118 (dnsdist+0x878b1e)
#13 void std::__invoke_impl<void, void (*&)(int, boost::any&), int, boost::any&>(std::__invoke_other, void (*&)(int, boost::any&), int&&, boost::any&) /usr/include/c++/13.2.1/bits/invoke.h:61 (dnsdist+0x32d951) (BuildId: ad82581368352777fda41d4b4145ba8ec738044c)
#14 std::enable_if<is_invocable_r_v<void, void (*&)(int, boost::any&), int, boost::any&>, void>::type std::__invoke_r<void, void (*&)(int, boost::any&), int, boost::any&>(void (*&)(int, boost::any&), int&&, boost::any&) /usr/include/c++/13.2.1/bits/invoke.h:111 (dnsdist+0x32d951)
#15 std::_Function_handler<void (int, boost::any&), void (*)(int, boost::any&)>::_M_invoke(std::_Any_data const&, int&&, boost::any&) /usr/include/c++/13.2.1/bits/std_function.h:290 (dnsdist+0x32d951)
#16 std::function<void (int, boost::any&)>::operator()(int, boost::any&) const /usr/include/c++/13.2.1/bits/std_function.h:591 (dnsdist+0x98fc0f) (BuildId: ad82581368352777fda41d4b4145ba8ec738044c)
#17 EpollFDMultiplexer::run(timeval*, int) /work/pdns/pdns/dnsdistdist/epollmplexer.cc:190 (dnsdist+0x98fc0f)
#18 tcpClientThread /work/pdns/pdns/dnsdistdist/dnsdist-tcp.cc:1251 (dnsdist+0x86cb7f) (BuildId: ad82581368352777fda41d4b4145ba8ec738044c)
#19 void std::__invoke_impl<void, void (*)(pdns::channel::Receiver<ConnectionInfo, std::default_delete<ConnectionInfo> >&&, pdns::channel::Receiver<CrossProtocolQuery, std::default_delete<CrossProtocolQuery> >&&, pdns::channel::Receiver<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, pdns::channel::Sender<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, std::vector<ClientState*, std::allocator<ClientState*> >), pdns::channel::Receiver<ConnectionInfo, std::default_delete<ConnectionInfo> >, pdns::channel::Receiver<CrossProtocolQuery, std::default_delete<CrossProtocolQuery> >, pdns::channel::Receiver<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >, pdns::channel::Sender<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >, std::vector<ClientState*, std::allocator<ClientState*> > >(std::__invoke_other, void (*&&)(pdns::channel::Receiver<ConnectionInfo, std::default_delete<ConnectionInfo> >&&, pdns::channel::Receiver<CrossProtocolQuery, std::default_delete<CrossProtocolQuery> >&&, pdns::channel::Receiver<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, pdns::channel::Sender<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, std::vector<ClientState*, std::allocator<ClientState*> >), pdns::channel::Receiver<ConnectionInfo, std::default_delete<ConnectionInfo> >&&, pdns::channel::Receiver<CrossProtocolQuery, std::default_delete<CrossProtocolQuery> >&&, pdns::channel::Receiver<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, pdns::channel::Sender<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, std::vector<ClientState*, std::allocator<ClientState*> >&&) /usr/include/c++/13.2.1/bits/invoke.h:61 (dnsdist+0x87aab1) (BuildId: ad82581368352777fda41d4b4145ba8ec738044c)
#20 std::__invoke_result<void (*)(pdns::channel::Receiver<ConnectionInfo, std::default_delete<ConnectionInfo> >&&, pdns::channel::Receiver<CrossProtocolQuery, std::default_delete<CrossProtocolQuery> >&&, pdns::channel::Receiver<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, pdns::channel::Sender<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, std::vector<ClientState*, std::allocator<ClientState*> >), pdns::channel::Receiver<ConnectionInfo, std::default_delete<ConnectionInfo> >, pdns::channel::Receiver<CrossProtocolQuery, std::default_delete<CrossProtocolQuery> >, pdns::channel::Receiver<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >, pdns::channel::Sender<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >, std::vector<ClientState*, std::allocator<ClientState*> > >::type std::__invoke<void (*)(pdns::channel::Receiver<ConnectionInfo, std::default_delete<ConnectionInfo> >&&, pdns::channel::Receiver<CrossProtocolQuery, std::default_delete<CrossProtocolQuery> >&&, pdns::channel::Receiver<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, pdns::channel::Sender<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, std::vector<ClientState*, std::allocator<ClientState*> >), pdns::channel::Receiver<ConnectionInfo, std::default_delete<ConnectionInfo> >, pdns::channel::Receiver<CrossProtocolQuery, std::default_delete<CrossProtocolQuery> >, pdns::channel::Receiver<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >, pdns::channel::Sender<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >, std::vector<ClientState*, std::allocator<ClientState*> > >(void (*&&)(pdns::channel::Receiver<ConnectionInfo, std::default_delete<ConnectionInfo> >&&, pdns::channel::Receiver<CrossProtocolQuery, std::default_delete<CrossProtocolQuery> >&&, pdns::channel::Receiver<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, pdns::channel::Sender<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, std::vector<ClientState*, std::allocator<ClientState*> >), pdns::channel::Receiver<ConnectionInfo, std::default_delete<ConnectionInfo> >&&, pdns::channel::Receiver<CrossProtocolQuery, std::default_delete<CrossProtocolQuery> >&&, pdns::channel::Receiver<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, pdns::channel::Sender<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, std::vector<ClientState*, std::allocator<ClientState*> >&&) /usr/include/c++/13.2.1/bits/invoke.h:96 (dnsdist+0x87aab1)
#21 void std::thread::_Invoker<std::tuple<void (*)(pdns::channel::Receiver<ConnectionInfo, std::default_delete<ConnectionInfo> >&&, pdns::channel::Receiver<CrossProtocolQuery, std::default_delete<CrossProtocolQuery> >&&, pdns::channel::Receiver<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, pdns::channel::Sender<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, std::vector<ClientState*, std::allocator<ClientState*> >), pdns::channel::Receiver<ConnectionInfo, std::default_delete<ConnectionInfo> >, pdns::channel::Receiver<CrossProtocolQuery, std::default_delete<CrossProtocolQuery> >, pdns::channel::Receiver<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >, pdns::channel::Sender<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >, std::vector<ClientState*, std::allocator<ClientState*> > > >::_M_invoke<0ul, 1ul, 2ul, 3ul, 4ul, 5ul>(std::_Index_tuple<0ul, 1ul, 2ul, 3ul, 4ul, 5ul>) /usr/include/c++/13.2.1/bits/std_thread.h:292 (dnsdist+0x87aab1)
#22 std::thread::_Invoker<std::tuple<void (*)(pdns::channel::Receiver<ConnectionInfo, std::default_delete<ConnectionInfo> >&&, pdns::channel::Receiver<CrossProtocolQuery, std::default_delete<CrossProtocolQuery> >&&, pdns::channel::Receiver<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, pdns::channel::Sender<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, std::vector<ClientState*, std::allocator<ClientState*> >), pdns::channel::Receiver<ConnectionInfo, std::default_delete<ConnectionInfo> >, pdns::channel::Receiver<CrossProtocolQuery, std::default_delete<CrossProtocolQuery> >, pdns::channel::Receiver<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >, pdns::channel::Sender<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >, std::vector<ClientState*, std::allocator<ClientState*> > > >::operator()() /usr/include/c++/13.2.1/bits/std_thread.h:299 (dnsdist+0x87aab1)
#23 std::thread::_State_impl<std::thread::_Invoker<std::tuple<void (*)(pdns::channel::Receiver<ConnectionInfo, std::default_delete<ConnectionInfo> >&&, pdns::channel::Receiver<CrossProtocolQuery, std::default_delete<CrossProtocolQuery> >&&, pdns::channel::Receiver<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, pdns::channel::Sender<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, std::vector<ClientState*, std::allocator<ClientState*> >), pdns::channel::Receiver<ConnectionInfo, std::default_delete<ConnectionInfo> >, pdns::channel::Receiver<CrossProtocolQuery, std::default_delete<CrossProtocolQuery> >, pdns::channel::Receiver<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >, pdns::channel::Sender<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >, std::vector<ClientState*, std::allocator<ClientState*> > > > >::_M_run() /usr/include/c++/13.2.1/bits/std_thread.h:244 (dnsdist+0x87aab1)
#24 execute_native_thread_routine /usr/src/debug/gcc/gcc/libstdc++-v3/src/c++11/thread.cc:104 (libstdc++.so.6+0xe1942) (BuildId: 207eb738c5976dd9aac1ae0640fc4de5946b547e)
Location is global 'OpenSSLTLSConnection::s_tlsConnIndex' of size 4 at 0x55a12bf3d758 (dnsdist+0xc49758)
Thread T4 'dnsdist/tcpClie' (tid=120471, running) created by main thread at:
#0 pthread_create /usr/src/debug/gcc/gcc/libsanitizer/tsan/tsan_interceptors_posix.cpp:1036 (libtsan.so.2+0x44219) (BuildId: 7e8fcb9ed0a63b98f2293e37c92ac955413efd9e)
#1 __gthread_create /usr/src/debug/gcc/gcc-build/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:663 (libstdc++.so.6+0xe1a29) (BuildId: 207eb738c5976dd9aac1ae0640fc4de5946b547e)
#2 std::thread::_M_start_thread(std::unique_ptr<std::thread::_State, std::default_delete<std::thread::_State> >, void (*)()) /usr/src/debug/gcc/gcc/libstdc++-v3/src/c++11/thread.cc:172 (libstdc++.so.6+0xe1a29)
#3 TCPClientCollection::addTCPClientThread(std::vector<ClientState*, std::allocator<ClientState*> >&) /work/pdns/pdns/dnsdistdist/dnsdist-tcp.cc:149 (dnsdist+0x8685a1) (BuildId: ad82581368352777fda41d4b4145ba8ec738044c)
#4 TCPClientCollection::TCPClientCollection(unsigned long, std::vector<ClientState*, std::allocator<ClientState*> >) /work/pdns/pdns/dnsdistdist/dnsdist-tcp.cc:126 (dnsdist+0x868912) (BuildId: ad82581368352777fda41d4b4145ba8ec738044c)
#5 std::__detail::_MakeUniq<TCPClientCollection>::__single_object std::make_unique<TCPClientCollection, unsigned long&, std::vector<ClientState*, std::allocator<ClientState*> > >(unsigned long&, std::vector<ClientState*, std::allocator<ClientState*> >&&) /usr/include/c++/13.2.1/bits/unique_ptr.h:1070 (dnsdist+0x20adef) (BuildId: ad82581368352777fda41d4b4145ba8ec738044c)
#6 main /work/pdns/pdns/dnsdistdist/dnsdist.cc:2865 (dnsdist+0x20adef)
Thread T3 'dnsdist/tcpClie' (tid=120470, running) created by main thread at:
#0 pthread_create /usr/src/debug/gcc/gcc/libsanitizer/tsan/tsan_interceptors_posix.cpp:1036 (libtsan.so.2+0x44219) (BuildId: 7e8fcb9ed0a63b98f2293e37c92ac955413efd9e)
#1 __gthread_create /usr/src/debug/gcc/gcc-build/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:663 (libstdc++.so.6+0xe1a29) (BuildId: 207eb738c5976dd9aac1ae0640fc4de5946b547e)
#2 std::thread::_M_start_thread(std::unique_ptr<std::thread::_State, std::default_delete<std::thread::_State> >, void (*)()) /usr/src/debug/gcc/gcc/libstdc++-v3/src/c++11/thread.cc:172 (libstdc++.so.6+0xe1a29)
#3 TCPClientCollection::addTCPClientThread(std::vector<ClientState*, std::allocator<ClientState*> >&) /work/pdns/pdns/dnsdistdist/dnsdist-tcp.cc:149 (dnsdist+0x8685a1) (BuildId: ad82581368352777fda41d4b4145ba8ec738044c)
#4 TCPClientCollection::TCPClientCollection(unsigned long, std::vector<ClientState*, std::allocator<ClientState*> >) /work/pdns/pdns/dnsdistdist/dnsdist-tcp.cc:126 (dnsdist+0x868912) (BuildId: ad82581368352777fda41d4b4145ba8ec738044c)
#5 std::__detail::_MakeUniq<TCPClientCollection>::__single_object std::make_unique<TCPClientCollection, unsigned long&, std::vector<ClientState*, std::allocator<ClientState*> > >(unsigned long&, std::vector<ClientState*, std::allocator<ClientState*> >&&) /usr/include/c++/13.2.1/bits/unique_ptr.h:1070 (dnsdist+0x20adef) (BuildId: ad82581368352777fda41d4b4145ba8ec738044c)
#6 main /work/pdns/pdns/dnsdistdist/dnsdist.cc:2865 (dnsdist+0x20adef)
SUMMARY: ThreadSanitizer: data race /work/pdns/pdns/dnsdistdist/tcpiohandler.cc:106 in OpenSSLTLSConnection::OpenSSLTLSConnection(int, timeval const&, std::shared_ptr<OpenSSLFrontendContext>)
```
rgacogne
added a commit
that referenced
this issue
Aug 28, 2023
We used to get a index from OpenSSL when the first incoming or
outgoing TLS connection was created. That index is later used
to store application-related data along the TLS connection, to
be able to access it in callbacks called from inside the OpenSSL
library.
Unfortunately the atomic flag construction used was racy: if a second
connection is created while the first one is still getting the index,
it could be reading the initial value (-1) instead of the actual index,
which might prevent the callback from working properly because they
cannot retrieve the necessary data. The good news is that this should
not have a serious impact: a TLS session might not be properly resumed
while it should have been, leading to a full TLS session negotiation.
This commit fixes the race by using a full mutex and only releasing
it once the value has been computed. In order to avoid a performance
penalty, the index is now computed when a TLS connection _context_
is created, instead of a TLS connection. TLS contexts should be
reused for a large number of connections, and mostly created during
startup or in the first few seconds of the application.
The race was reported by Thread Sanitizer during the
`test_TLS.py::TestTLSFrontendLimits::testTCPConnsPerTLSFrontend`
regression test as:
```
WARNING: ThreadSanitizer: data race (pid=120466)
Read of size 4 at 0x55a12bf3d758 by thread T4:
#0 OpenSSLTLSConnection::OpenSSLTLSConnection(int, timeval const&, std::shared_ptr<OpenSSLFrontendContext>) /work/pdns/pdns/dnsdistdist/tcpiohandler.cc:106 (dnsdist+0x97ece8) (BuildId: ad82581368352777fda41d4b4145ba8ec738044c)
#1 std::__detail::_MakeUniq<OpenSSLTLSConnection>::__single_object std::make_unique<OpenSSLTLSConnection, int&, timeval const&, std::shared_ptr<OpenSSLFrontendContext>&>(int&, timeval const&, std::shared_ptr<OpenSSLFrontendContext>&) /usr/include/c++/13.2.1/bits/unique_ptr.h:1070 (dnsdist+0x97eff6) (BuildId: ad82581368352777fda41d4b4145ba8ec738044c)
#2 OpenSSLTLSIOCtx::getConnection(int, timeval const&, long) /work/pdns/pdns/dnsdistdist/tcpiohandler.cc:797 (dnsdist+0x97eff6)
#3 TCPIOHandler::TCPIOHandler(int, timeval const&, std::shared_ptr<TLSCtx>, long) /work/pdns/pdns/dnsdistdist/tcpiohandler.hh:246 (dnsdist+0x88c24f) (BuildId: ad82581368352777fda41d4b4145ba8ec738044c)
#4 IncomingTCPConnectionState::IncomingTCPConnectionState(ConnectionInfo&&, TCPClientThreadData&, timeval const&) /work/pdns/pdns/dnsdistdist/dnsdist-tcp-upstream.hh:29 (dnsdist+0x88c24f)
#5 void std::_Construct<IncomingTCPConnectionState, ConnectionInfo, TCPClientThreadData&, timeval&>(IncomingTCPConnectionState*, ConnectionInfo&&, TCPClientThreadData&, timeval&) /usr/include/c++/13.2.1/bits/stl_construct.h:119 (dnsdist+0x878b1e) (BuildId: ad82581368352777fda41d4b4145ba8ec738044c)
#6 void std::allocator_traits<std::allocator<void> >::construct<IncomingTCPConnectionState, ConnectionInfo, TCPClientThreadData&, timeval&>(std::allocator<void>&, IncomingTCPConnectionState*, ConnectionInfo&&, TCPClientThreadData&, timeval&) /usr/include/c++/13.2.1/bits/alloc_traits.h:660 (dnsdist+0x878b1e)
#7 std::_Sp_counted_ptr_inplace<IncomingTCPConnectionState, std::allocator<void>, (__gnu_cxx::_Lock_policy)2>::_Sp_counted_ptr_inplace<ConnectionInfo, TCPClientThreadData&, timeval&>(std::allocator<void>, ConnectionInfo&&, TCPClientThreadData&, timeval&) /usr/include/c++/13.2.1/bits/shared_ptr_base.h:604 (dnsdist+0x878b1e)
#8 std::__shared_count<(__gnu_cxx::_Lock_policy)2>::__shared_count<IncomingTCPConnectionState, std::allocator<void>, ConnectionInfo, TCPClientThreadData&, timeval&>(IncomingTCPConnectionState*&, std::_Sp_alloc_shared_tag<std::allocator<void> >, ConnectionInfo&&, TCPClientThreadData&, timeval&) /usr/include/c++/13.2.1/bits/shared_ptr_base.h:971 (dnsdist+0x878b1e)
#9 std::__shared_ptr<IncomingTCPConnectionState, (__gnu_cxx::_Lock_policy)2>::__shared_ptr<std::allocator<void>, ConnectionInfo, TCPClientThreadData&, timeval&>(std::_Sp_alloc_shared_tag<std::allocator<void> >, ConnectionInfo&&, TCPClientThreadData&, timeval&) /usr/include/c++/13.2.1/bits/shared_ptr_base.h:1712 (dnsdist+0x878b1e)
#10 std::shared_ptr<IncomingTCPConnectionState>::shared_ptr<std::allocator<void>, ConnectionInfo, TCPClientThreadData&, timeval&>(std::_Sp_alloc_shared_tag<std::allocator<void> >, ConnectionInfo&&, TCPClientThreadData&, timeval&) /usr/include/c++/13.2.1/bits/shared_ptr.h:464 (dnsdist+0x878b1e)
#11 std::shared_ptr<std::enable_if<!std::is_array<IncomingTCPConnectionState>::value, IncomingTCPConnectionState>::type> std::make_shared<IncomingTCPConnectionState, ConnectionInfo, TCPClientThreadData&, timeval&>(ConnectionInfo&&, TCPClientThreadData&, timeval&) /usr/include/c++/13.2.1/bits/shared_ptr.h:1010 (dnsdist+0x878b1e)
#12 handleIncomingTCPQuery /work/pdns/pdns/dnsdistdist/dnsdist-tcp.cc:1118 (dnsdist+0x878b1e)
#13 void std::__invoke_impl<void, void (*&)(int, boost::any&), int, boost::any&>(std::__invoke_other, void (*&)(int, boost::any&), int&&, boost::any&) /usr/include/c++/13.2.1/bits/invoke.h:61 (dnsdist+0x32d951) (BuildId: ad82581368352777fda41d4b4145ba8ec738044c)
#14 std::enable_if<is_invocable_r_v<void, void (*&)(int, boost::any&), int, boost::any&>, void>::type std::__invoke_r<void, void (*&)(int, boost::any&), int, boost::any&>(void (*&)(int, boost::any&), int&&, boost::any&) /usr/include/c++/13.2.1/bits/invoke.h:111 (dnsdist+0x32d951)
#15 std::_Function_handler<void (int, boost::any&), void (*)(int, boost::any&)>::_M_invoke(std::_Any_data const&, int&&, boost::any&) /usr/include/c++/13.2.1/bits/std_function.h:290 (dnsdist+0x32d951)
#16 std::function<void (int, boost::any&)>::operator()(int, boost::any&) const /usr/include/c++/13.2.1/bits/std_function.h:591 (dnsdist+0x98fc0f) (BuildId: ad82581368352777fda41d4b4145ba8ec738044c)
#17 EpollFDMultiplexer::run(timeval*, int) /work/pdns/pdns/dnsdistdist/epollmplexer.cc:190 (dnsdist+0x98fc0f)
#18 tcpClientThread /work/pdns/pdns/dnsdistdist/dnsdist-tcp.cc:1251 (dnsdist+0x86cb7f) (BuildId: ad82581368352777fda41d4b4145ba8ec738044c)
#19 void std::__invoke_impl<void, void (*)(pdns::channel::Receiver<ConnectionInfo, std::default_delete<ConnectionInfo> >&&, pdns::channel::Receiver<CrossProtocolQuery, std::default_delete<CrossProtocolQuery> >&&, pdns::channel::Receiver<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, pdns::channel::Sender<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, std::vector<ClientState*, std::allocator<ClientState*> >), pdns::channel::Receiver<ConnectionInfo, std::default_delete<ConnectionInfo> >, pdns::channel::Receiver<CrossProtocolQuery, std::default_delete<CrossProtocolQuery> >, pdns::channel::Receiver<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >, pdns::channel::Sender<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >, std::vector<ClientState*, std::allocator<ClientState*> > >(std::__invoke_other, void (*&&)(pdns::channel::Receiver<ConnectionInfo, std::default_delete<ConnectionInfo> >&&, pdns::channel::Receiver<CrossProtocolQuery, std::default_delete<CrossProtocolQuery> >&&, pdns::channel::Receiver<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, pdns::channel::Sender<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, std::vector<ClientState*, std::allocator<ClientState*> >), pdns::channel::Receiver<ConnectionInfo, std::default_delete<ConnectionInfo> >&&, pdns::channel::Receiver<CrossProtocolQuery, std::default_delete<CrossProtocolQuery> >&&, pdns::channel::Receiver<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, pdns::channel::Sender<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, std::vector<ClientState*, std::allocator<ClientState*> >&&) /usr/include/c++/13.2.1/bits/invoke.h:61 (dnsdist+0x87aab1) (BuildId: ad82581368352777fda41d4b4145ba8ec738044c)
#20 std::__invoke_result<void (*)(pdns::channel::Receiver<ConnectionInfo, std::default_delete<ConnectionInfo> >&&, pdns::channel::Receiver<CrossProtocolQuery, std::default_delete<CrossProtocolQuery> >&&, pdns::channel::Receiver<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, pdns::channel::Sender<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, std::vector<ClientState*, std::allocator<ClientState*> >), pdns::channel::Receiver<ConnectionInfo, std::default_delete<ConnectionInfo> >, pdns::channel::Receiver<CrossProtocolQuery, std::default_delete<CrossProtocolQuery> >, pdns::channel::Receiver<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >, pdns::channel::Sender<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >, std::vector<ClientState*, std::allocator<ClientState*> > >::type std::__invoke<void (*)(pdns::channel::Receiver<ConnectionInfo, std::default_delete<ConnectionInfo> >&&, pdns::channel::Receiver<CrossProtocolQuery, std::default_delete<CrossProtocolQuery> >&&, pdns::channel::Receiver<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, pdns::channel::Sender<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, std::vector<ClientState*, std::allocator<ClientState*> >), pdns::channel::Receiver<ConnectionInfo, std::default_delete<ConnectionInfo> >, pdns::channel::Receiver<CrossProtocolQuery, std::default_delete<CrossProtocolQuery> >, pdns::channel::Receiver<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >, pdns::channel::Sender<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >, std::vector<ClientState*, std::allocator<ClientState*> > >(void (*&&)(pdns::channel::Receiver<ConnectionInfo, std::default_delete<ConnectionInfo> >&&, pdns::channel::Receiver<CrossProtocolQuery, std::default_delete<CrossProtocolQuery> >&&, pdns::channel::Receiver<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, pdns::channel::Sender<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, std::vector<ClientState*, std::allocator<ClientState*> >), pdns::channel::Receiver<ConnectionInfo, std::default_delete<ConnectionInfo> >&&, pdns::channel::Receiver<CrossProtocolQuery, std::default_delete<CrossProtocolQuery> >&&, pdns::channel::Receiver<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, pdns::channel::Sender<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, std::vector<ClientState*, std::allocator<ClientState*> >&&) /usr/include/c++/13.2.1/bits/invoke.h:96 (dnsdist+0x87aab1)
#21 void std::thread::_Invoker<std::tuple<void (*)(pdns::channel::Receiver<ConnectionInfo, std::default_delete<ConnectionInfo> >&&, pdns::channel::Receiver<CrossProtocolQuery, std::default_delete<CrossProtocolQuery> >&&, pdns::channel::Receiver<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, pdns::channel::Sender<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, std::vector<ClientState*, std::allocator<ClientState*> >), pdns::channel::Receiver<ConnectionInfo, std::default_delete<ConnectionInfo> >, pdns::channel::Receiver<CrossProtocolQuery, std::default_delete<CrossProtocolQuery> >, pdns::channel::Receiver<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >, pdns::channel::Sender<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >, std::vector<ClientState*, std::allocator<ClientState*> > > >::_M_invoke<0ul, 1ul, 2ul, 3ul, 4ul, 5ul>(std::_Index_tuple<0ul, 1ul, 2ul, 3ul, 4ul, 5ul>) /usr/include/c++/13.2.1/bits/std_thread.h:292 (dnsdist+0x87aab1)
#22 std::thread::_Invoker<std::tuple<void (*)(pdns::channel::Receiver<ConnectionInfo, std::default_delete<ConnectionInfo> >&&, pdns::channel::Receiver<CrossProtocolQuery, std::default_delete<CrossProtocolQuery> >&&, pdns::channel::Receiver<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, pdns::channel::Sender<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, std::vector<ClientState*, std::allocator<ClientState*> >), pdns::channel::Receiver<ConnectionInfo, std::default_delete<ConnectionInfo> >, pdns::channel::Receiver<CrossProtocolQuery, std::default_delete<CrossProtocolQuery> >, pdns::channel::Receiver<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >, pdns::channel::Sender<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >, std::vector<ClientState*, std::allocator<ClientState*> > > >::operator()() /usr/include/c++/13.2.1/bits/std_thread.h:299 (dnsdist+0x87aab1)
#23 std::thread::_State_impl<std::thread::_Invoker<std::tuple<void (*)(pdns::channel::Receiver<ConnectionInfo, std::default_delete<ConnectionInfo> >&&, pdns::channel::Receiver<CrossProtocolQuery, std::default_delete<CrossProtocolQuery> >&&, pdns::channel::Receiver<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, pdns::channel::Sender<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, std::vector<ClientState*, std::allocator<ClientState*> >), pdns::channel::Receiver<ConnectionInfo, std::default_delete<ConnectionInfo> >, pdns::channel::Receiver<CrossProtocolQuery, std::default_delete<CrossProtocolQuery> >, pdns::channel::Receiver<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >, pdns::channel::Sender<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >, std::vector<ClientState*, std::allocator<ClientState*> > > > >::_M_run() /usr/include/c++/13.2.1/bits/std_thread.h:244 (dnsdist+0x87aab1)
#24 execute_native_thread_routine /usr/src/debug/gcc/gcc/libstdc++-v3/src/c++11/thread.cc:104 (libstdc++.so.6+0xe1942) (BuildId: 207eb738c5976dd9aac1ae0640fc4de5946b547e)
Previous write of size 4 at 0x55a12bf3d758 by thread T3:
#0 OpenSSLTLSConnection::OpenSSLTLSConnection(int, timeval const&, std::shared_ptr<OpenSSLFrontendContext>) /work/pdns/pdns/dnsdistdist/tcpiohandler.cc:88 (dnsdist+0x97ed98) (BuildId: ad82581368352777fda41d4b4145ba8ec738044c)
#1 std::__detail::_MakeUniq<OpenSSLTLSConnection>::__single_object std::make_unique<OpenSSLTLSConnection, int&, timeval const&, std::shared_ptr<OpenSSLFrontendContext>&>(int&, timeval const&, std::shared_ptr<OpenSSLFrontendContext>&) /usr/include/c++/13.2.1/bits/unique_ptr.h:1070 (dnsdist+0x97eff6) (BuildId: ad82581368352777fda41d4b4145ba8ec738044c)
#2 OpenSSLTLSIOCtx::getConnection(int, timeval const&, long) /work/pdns/pdns/dnsdistdist/tcpiohandler.cc:797 (dnsdist+0x97eff6)
#3 TCPIOHandler::TCPIOHandler(int, timeval const&, std::shared_ptr<TLSCtx>, long) /work/pdns/pdns/dnsdistdist/tcpiohandler.hh:246 (dnsdist+0x88c24f) (BuildId: ad82581368352777fda41d4b4145ba8ec738044c)
#4 IncomingTCPConnectionState::IncomingTCPConnectionState(ConnectionInfo&&, TCPClientThreadData&, timeval const&) /work/pdns/pdns/dnsdistdist/dnsdist-tcp-upstream.hh:29 (dnsdist+0x88c24f)
#5 void std::_Construct<IncomingTCPConnectionState, ConnectionInfo, TCPClientThreadData&, timeval&>(IncomingTCPConnectionState*, ConnectionInfo&&, TCPClientThreadData&, timeval&) /usr/include/c++/13.2.1/bits/stl_construct.h:119 (dnsdist+0x878b1e) (BuildId: ad82581368352777fda41d4b4145ba8ec738044c)
#6 void std::allocator_traits<std::allocator<void> >::construct<IncomingTCPConnectionState, ConnectionInfo, TCPClientThreadData&, timeval&>(std::allocator<void>&, IncomingTCPConnectionState*, ConnectionInfo&&, TCPClientThreadData&, timeval&) /usr/include/c++/13.2.1/bits/alloc_traits.h:660 (dnsdist+0x878b1e)
#7 std::_Sp_counted_ptr_inplace<IncomingTCPConnectionState, std::allocator<void>, (__gnu_cxx::_Lock_policy)2>::_Sp_counted_ptr_inplace<ConnectionInfo, TCPClientThreadData&, timeval&>(std::allocator<void>, ConnectionInfo&&, TCPClientThreadData&, timeval&) /usr/include/c++/13.2.1/bits/shared_ptr_base.h:604 (dnsdist+0x878b1e)
#8 std::__shared_count<(__gnu_cxx::_Lock_policy)2>::__shared_count<IncomingTCPConnectionState, std::allocator<void>, ConnectionInfo, TCPClientThreadData&, timeval&>(IncomingTCPConnectionState*&, std::_Sp_alloc_shared_tag<std::allocator<void> >, ConnectionInfo&&, TCPClientThreadData&, timeval&) /usr/include/c++/13.2.1/bits/shared_ptr_base.h:971 (dnsdist+0x878b1e)
#9 std::__shared_ptr<IncomingTCPConnectionState, (__gnu_cxx::_Lock_policy)2>::__shared_ptr<std::allocator<void>, ConnectionInfo, TCPClientThreadData&, timeval&>(std::_Sp_alloc_shared_tag<std::allocator<void> >, ConnectionInfo&&, TCPClientThreadData&, timeval&) /usr/include/c++/13.2.1/bits/shared_ptr_base.h:1712 (dnsdist+0x878b1e)
#10 std::shared_ptr<IncomingTCPConnectionState>::shared_ptr<std::allocator<void>, ConnectionInfo, TCPClientThreadData&, timeval&>(std::_Sp_alloc_shared_tag<std::allocator<void> >, ConnectionInfo&&, TCPClientThreadData&, timeval&) /usr/include/c++/13.2.1/bits/shared_ptr.h:464 (dnsdist+0x878b1e)
#11 std::shared_ptr<std::enable_if<!std::is_array<IncomingTCPConnectionState>::value, IncomingTCPConnectionState>::type> std::make_shared<IncomingTCPConnectionState, ConnectionInfo, TCPClientThreadData&, timeval&>(ConnectionInfo&&, TCPClientThreadData&, timeval&) /usr/include/c++/13.2.1/bits/shared_ptr.h:1010 (dnsdist+0x878b1e)
#12 handleIncomingTCPQuery /work/pdns/pdns/dnsdistdist/dnsdist-tcp.cc:1118 (dnsdist+0x878b1e)
#13 void std::__invoke_impl<void, void (*&)(int, boost::any&), int, boost::any&>(std::__invoke_other, void (*&)(int, boost::any&), int&&, boost::any&) /usr/include/c++/13.2.1/bits/invoke.h:61 (dnsdist+0x32d951) (BuildId: ad82581368352777fda41d4b4145ba8ec738044c)
#14 std::enable_if<is_invocable_r_v<void, void (*&)(int, boost::any&), int, boost::any&>, void>::type std::__invoke_r<void, void (*&)(int, boost::any&), int, boost::any&>(void (*&)(int, boost::any&), int&&, boost::any&) /usr/include/c++/13.2.1/bits/invoke.h:111 (dnsdist+0x32d951)
#15 std::_Function_handler<void (int, boost::any&), void (*)(int, boost::any&)>::_M_invoke(std::_Any_data const&, int&&, boost::any&) /usr/include/c++/13.2.1/bits/std_function.h:290 (dnsdist+0x32d951)
#16 std::function<void (int, boost::any&)>::operator()(int, boost::any&) const /usr/include/c++/13.2.1/bits/std_function.h:591 (dnsdist+0x98fc0f) (BuildId: ad82581368352777fda41d4b4145ba8ec738044c)
#17 EpollFDMultiplexer::run(timeval*, int) /work/pdns/pdns/dnsdistdist/epollmplexer.cc:190 (dnsdist+0x98fc0f)
#18 tcpClientThread /work/pdns/pdns/dnsdistdist/dnsdist-tcp.cc:1251 (dnsdist+0x86cb7f) (BuildId: ad82581368352777fda41d4b4145ba8ec738044c)
#19 void std::__invoke_impl<void, void (*)(pdns::channel::Receiver<ConnectionInfo, std::default_delete<ConnectionInfo> >&&, pdns::channel::Receiver<CrossProtocolQuery, std::default_delete<CrossProtocolQuery> >&&, pdns::channel::Receiver<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, pdns::channel::Sender<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, std::vector<ClientState*, std::allocator<ClientState*> >), pdns::channel::Receiver<ConnectionInfo, std::default_delete<ConnectionInfo> >, pdns::channel::Receiver<CrossProtocolQuery, std::default_delete<CrossProtocolQuery> >, pdns::channel::Receiver<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >, pdns::channel::Sender<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >, std::vector<ClientState*, std::allocator<ClientState*> > >(std::__invoke_other, void (*&&)(pdns::channel::Receiver<ConnectionInfo, std::default_delete<ConnectionInfo> >&&, pdns::channel::Receiver<CrossProtocolQuery, std::default_delete<CrossProtocolQuery> >&&, pdns::channel::Receiver<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, pdns::channel::Sender<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, std::vector<ClientState*, std::allocator<ClientState*> >), pdns::channel::Receiver<ConnectionInfo, std::default_delete<ConnectionInfo> >&&, pdns::channel::Receiver<CrossProtocolQuery, std::default_delete<CrossProtocolQuery> >&&, pdns::channel::Receiver<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, pdns::channel::Sender<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, std::vector<ClientState*, std::allocator<ClientState*> >&&) /usr/include/c++/13.2.1/bits/invoke.h:61 (dnsdist+0x87aab1) (BuildId: ad82581368352777fda41d4b4145ba8ec738044c)
#20 std::__invoke_result<void (*)(pdns::channel::Receiver<ConnectionInfo, std::default_delete<ConnectionInfo> >&&, pdns::channel::Receiver<CrossProtocolQuery, std::default_delete<CrossProtocolQuery> >&&, pdns::channel::Receiver<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, pdns::channel::Sender<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, std::vector<ClientState*, std::allocator<ClientState*> >), pdns::channel::Receiver<ConnectionInfo, std::default_delete<ConnectionInfo> >, pdns::channel::Receiver<CrossProtocolQuery, std::default_delete<CrossProtocolQuery> >, pdns::channel::Receiver<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >, pdns::channel::Sender<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >, std::vector<ClientState*, std::allocator<ClientState*> > >::type std::__invoke<void (*)(pdns::channel::Receiver<ConnectionInfo, std::default_delete<ConnectionInfo> >&&, pdns::channel::Receiver<CrossProtocolQuery, std::default_delete<CrossProtocolQuery> >&&, pdns::channel::Receiver<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, pdns::channel::Sender<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, std::vector<ClientState*, std::allocator<ClientState*> >), pdns::channel::Receiver<ConnectionInfo, std::default_delete<ConnectionInfo> >, pdns::channel::Receiver<CrossProtocolQuery, std::default_delete<CrossProtocolQuery> >, pdns::channel::Receiver<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >, pdns::channel::Sender<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >, std::vector<ClientState*, std::allocator<ClientState*> > >(void (*&&)(pdns::channel::Receiver<ConnectionInfo, std::default_delete<ConnectionInfo> >&&, pdns::channel::Receiver<CrossProtocolQuery, std::default_delete<CrossProtocolQuery> >&&, pdns::channel::Receiver<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, pdns::channel::Sender<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, std::vector<ClientState*, std::allocator<ClientState*> >), pdns::channel::Receiver<ConnectionInfo, std::default_delete<ConnectionInfo> >&&, pdns::channel::Receiver<CrossProtocolQuery, std::default_delete<CrossProtocolQuery> >&&, pdns::channel::Receiver<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, pdns::channel::Sender<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, std::vector<ClientState*, std::allocator<ClientState*> >&&) /usr/include/c++/13.2.1/bits/invoke.h:96 (dnsdist+0x87aab1)
#21 void std::thread::_Invoker<std::tuple<void (*)(pdns::channel::Receiver<ConnectionInfo, std::default_delete<ConnectionInfo> >&&, pdns::channel::Receiver<CrossProtocolQuery, std::default_delete<CrossProtocolQuery> >&&, pdns::channel::Receiver<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, pdns::channel::Sender<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, std::vector<ClientState*, std::allocator<ClientState*> >), pdns::channel::Receiver<ConnectionInfo, std::default_delete<ConnectionInfo> >, pdns::channel::Receiver<CrossProtocolQuery, std::default_delete<CrossProtocolQuery> >, pdns::channel::Receiver<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >, pdns::channel::Sender<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >, std::vector<ClientState*, std::allocator<ClientState*> > > >::_M_invoke<0ul, 1ul, 2ul, 3ul, 4ul, 5ul>(std::_Index_tuple<0ul, 1ul, 2ul, 3ul, 4ul, 5ul>) /usr/include/c++/13.2.1/bits/std_thread.h:292 (dnsdist+0x87aab1)
#22 std::thread::_Invoker<std::tuple<void (*)(pdns::channel::Receiver<ConnectionInfo, std::default_delete<ConnectionInfo> >&&, pdns::channel::Receiver<CrossProtocolQuery, std::default_delete<CrossProtocolQuery> >&&, pdns::channel::Receiver<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, pdns::channel::Sender<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, std::vector<ClientState*, std::allocator<ClientState*> >), pdns::channel::Receiver<ConnectionInfo, std::default_delete<ConnectionInfo> >, pdns::channel::Receiver<CrossProtocolQuery, std::default_delete<CrossProtocolQuery> >, pdns::channel::Receiver<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >, pdns::channel::Sender<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >, std::vector<ClientState*, std::allocator<ClientState*> > > >::operator()() /usr/include/c++/13.2.1/bits/std_thread.h:299 (dnsdist+0x87aab1)
#23 std::thread::_State_impl<std::thread::_Invoker<std::tuple<void (*)(pdns::channel::Receiver<ConnectionInfo, std::default_delete<ConnectionInfo> >&&, pdns::channel::Receiver<CrossProtocolQuery, std::default_delete<CrossProtocolQuery> >&&, pdns::channel::Receiver<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, pdns::channel::Sender<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >&&, std::vector<ClientState*, std::allocator<ClientState*> >), pdns::channel::Receiver<ConnectionInfo, std::default_delete<ConnectionInfo> >, pdns::channel::Receiver<CrossProtocolQuery, std::default_delete<CrossProtocolQuery> >, pdns::channel::Receiver<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >, pdns::channel::Sender<TCPCrossProtocolResponse, std::default_delete<TCPCrossProtocolResponse> >, std::vector<ClientState*, std::allocator<ClientState*> > > > >::_M_run() /usr/include/c++/13.2.1/bits/std_thread.h:244 (dnsdist+0x87aab1)
#24 execute_native_thread_routine /usr/src/debug/gcc/gcc/libstdc++-v3/src/c++11/thread.cc:104 (libstdc++.so.6+0xe1942) (BuildId: 207eb738c5976dd9aac1ae0640fc4de5946b547e)
Location is global 'OpenSSLTLSConnection::s_tlsConnIndex' of size 4 at 0x55a12bf3d758 (dnsdist+0xc49758)
Thread T4 'dnsdist/tcpClie' (tid=120471, running) created by main thread at:
#0 pthread_create /usr/src/debug/gcc/gcc/libsanitizer/tsan/tsan_interceptors_posix.cpp:1036 (libtsan.so.2+0x44219) (BuildId: 7e8fcb9ed0a63b98f2293e37c92ac955413efd9e)
#1 __gthread_create /usr/src/debug/gcc/gcc-build/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:663 (libstdc++.so.6+0xe1a29) (BuildId: 207eb738c5976dd9aac1ae0640fc4de5946b547e)
#2 std::thread::_M_start_thread(std::unique_ptr<std::thread::_State, std::default_delete<std::thread::_State> >, void (*)()) /usr/src/debug/gcc/gcc/libstdc++-v3/src/c++11/thread.cc:172 (libstdc++.so.6+0xe1a29)
#3 TCPClientCollection::addTCPClientThread(std::vector<ClientState*, std::allocator<ClientState*> >&) /work/pdns/pdns/dnsdistdist/dnsdist-tcp.cc:149 (dnsdist+0x8685a1) (BuildId: ad82581368352777fda41d4b4145ba8ec738044c)
#4 TCPClientCollection::TCPClientCollection(unsigned long, std::vector<ClientState*, std::allocator<ClientState*> >) /work/pdns/pdns/dnsdistdist/dnsdist-tcp.cc:126 (dnsdist+0x868912) (BuildId: ad82581368352777fda41d4b4145ba8ec738044c)
#5 std::__detail::_MakeUniq<TCPClientCollection>::__single_object std::make_unique<TCPClientCollection, unsigned long&, std::vector<ClientState*, std::allocator<ClientState*> > >(unsigned long&, std::vector<ClientState*, std::allocator<ClientState*> >&&) /usr/include/c++/13.2.1/bits/unique_ptr.h:1070 (dnsdist+0x20adef) (BuildId: ad82581368352777fda41d4b4145ba8ec738044c)
#6 main /work/pdns/pdns/dnsdistdist/dnsdist.cc:2865 (dnsdist+0x20adef)
Thread T3 'dnsdist/tcpClie' (tid=120470, running) created by main thread at:
#0 pthread_create /usr/src/debug/gcc/gcc/libsanitizer/tsan/tsan_interceptors_posix.cpp:1036 (libtsan.so.2+0x44219) (BuildId: 7e8fcb9ed0a63b98f2293e37c92ac955413efd9e)
#1 __gthread_create /usr/src/debug/gcc/gcc-build/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:663 (libstdc++.so.6+0xe1a29) (BuildId: 207eb738c5976dd9aac1ae0640fc4de5946b547e)
#2 std::thread::_M_start_thread(std::unique_ptr<std::thread::_State, std::default_delete<std::thread::_State> >, void (*)()) /usr/src/debug/gcc/gcc/libstdc++-v3/src/c++11/thread.cc:172 (libstdc++.so.6+0xe1a29)
#3 TCPClientCollection::addTCPClientThread(std::vector<ClientState*, std::allocator<ClientState*> >&) /work/pdns/pdns/dnsdistdist/dnsdist-tcp.cc:149 (dnsdist+0x8685a1) (BuildId: ad82581368352777fda41d4b4145ba8ec738044c)
#4 TCPClientCollection::TCPClientCollection(unsigned long, std::vector<ClientState*, std::allocator<ClientState*> >) /work/pdns/pdns/dnsdistdist/dnsdist-tcp.cc:126 (dnsdist+0x868912) (BuildId: ad82581368352777fda41d4b4145ba8ec738044c)
#5 std::__detail::_MakeUniq<TCPClientCollection>::__single_object std::make_unique<TCPClientCollection, unsigned long&, std::vector<ClientState*, std::allocator<ClientState*> > >(unsigned long&, std::vector<ClientState*, std::allocator<ClientState*> >&&) /usr/include/c++/13.2.1/bits/unique_ptr.h:1070 (dnsdist+0x20adef) (BuildId: ad82581368352777fda41d4b4145ba8ec738044c)
#6 main /work/pdns/pdns/dnsdistdist/dnsdist.cc:2865 (dnsdist+0x20adef)
SUMMARY: ThreadSanitizer: data race /work/pdns/pdns/dnsdistdist/tcpiohandler.cc:106 in OpenSSLTLSConnection::OpenSSLTLSConnection(int, timeval const&, std::shared_ptr<OpenSSLFrontendContext>)
```
(cherry picked from commit b56f05b)
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