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Fix minor memory leak in XrdCl #15

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merged 1 commit into from
May 17, 2013
Merged

Fix minor memory leak in XrdCl #15

merged 1 commit into from
May 17, 2013

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esindril
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@ljanyst
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ljanyst commented May 17, 2013

Thanks for the patch, Elvin! I will merge it, but have you really hit the case with malformed protocol response? If so we should definitely investigate it as well...

@esindril
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Not really, I was hunting down another leak and I just "saw" this one ...

@ljanyst ljanyst merged commit cccdc37 into xrootd:master May 17, 2013
@esindril esindril mentioned this pull request Nov 4, 2013
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gbitzes added a commit to gbitzes/xrootd that referenced this pull request Nov 15, 2017
@gbitzes
[XrdSys] Fix data race on cP->dlType
0481107 
cP->dlType is being read outside of the lock. Diagnosed through the
following report from ThreadSanitizer:

WARNING: ThreadSanitizer: data race (pid=13166)
  Write of size 1 at 0x7b28000100d0 by thread T29 (mutexes: write M0, write M0, write M1382, write M0, write M1385):
    #0 XrdSys::IOEvents::Poller::TmoAdd(XrdSys::IOEvents::Channel*, int) /home/gbitzes/xrootd/src/XrdSys/XrdSysIOEvents.cc:1088 (libXrdUtils.so.2+0x0000000338f1)
    xrootd#1 XrdSys::IOEvents::Channel::Enable(int, int, char const**) /home/gbitzes/xrootd/src/XrdSys/XrdSysIOEvents.cc:415 (libXrdUtils.so.2+0x0000000355b6)
    xrootd#2 XrdCl::PollerBuiltIn::EnableWriteNotification(XrdCl::Socket*, bool, unsigned short) /home/gbitzes/xrootd/src/XrdCl/XrdClPollerBuiltIn.cc:481 (libXrdCl.so.2+0x000000063c50)
    xrootd#3 XrdCl::AsyncSocketHandler::EnableUplink() /home/gbitzes/xrootd/src/./XrdCl/XrdClAsyncSocketHandler.hh:96 (libXrdCl.so.2+0x00000006d06f)
    xrootd#4 XrdCl::Stream::EnableLink(XrdCl::PathID&) /home/gbitzes/xrootd/src/XrdCl/XrdClStream.cc:226 (libXrdCl.so.2+0x00000006d06f)
    xrootd#5 XrdCl::Stream::Send(XrdCl::Message*, XrdCl::OutgoingMsgHandler*, bool, long) /home/gbitzes/xrootd/src/XrdCl/XrdClStream.cc:316 (libXrdCl.so.2+0x00000006e0d7)
    xrootd#6 XrdCl::Channel::Send(XrdCl::Message*, XrdCl::OutgoingMsgHandler*, bool, long, XrdCl::VirtualRedirector*) /home/gbitzes/xrootd/src/XrdCl/XrdClChannel.cc:306 (libXrdCl.so.2+0x000000068686)
    xrootd#7 XrdCl::PostMaster::Send(XrdCl::URL const&, XrdCl::Message*, XrdCl::OutgoingMsgHandler*, bool, long) /home/gbitzes/xrootd/src/XrdCl/XrdClPostMaster.cc:198 (libXrdCl.so.2+0x000000066ec9)
    xrootd#8 XrdCl::MessageUtils::SendMessage(XrdCl::URL const&, XrdCl::Message*, XrdCl::ResponseHandler*, XrdCl::MessageSendParams const&) /home/gbitzes/xrootd/src/XrdCl/XrdClMessageUtils.cc:114 (libXrdCl.so.2+0x0000000b349e)
    xrootd#9 XrdCl::FileSystem::Send(XrdCl::Message*, XrdCl::ResponseHandler*, XrdCl::MessageSendParams&) /home/gbitzes/xrootd/src/XrdCl/XrdClFileSystem.cc:1419 (libXrdCl.so.2+0x000000085b3d)
    xrootd#10 XrdCl::FileSystem::Query(XrdCl::QueryCode::Code, XrdCl::Buffer const&, XrdCl::ResponseHandler*, unsigned short) /home/gbitzes/xrootd/src/XrdCl/XrdClFileSystem.cc:720 (libXrdCl.so.2+0x00000008fbe3)
    xrootd#11 XrdCl::FileSystem::Query(XrdCl::QueryCode::Code, XrdCl::Buffer const&, XrdCl::Buffer*&, unsigned short) /home/gbitzes/xrootd/src/XrdCl/XrdClFileSystem.cc:732 (libXrdCl.so.2+0x00000009006e)
    xrootd#12 backend::Query(XrdCl::FileSystem&, XrdCl::QueryCode::Code, XrdCl::Buffer&, XrdCl::Buffer*&) /afs/cern.ch/user/g/gbitzes/dev/eos/fusex/backend/backend.cc:875 (eosxd+0x00000067fb9f)
    xrootd#13 backend::putMD(fuse_id const&, eos::fusex::md*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, XrdSysMutex*) /afs/cern.ch/user/g/gbitzes/dev/eos/fusex/backend/backend.cc:454 (eosxd+0x00000068912e)
    xrootd#14 metad::mdcflush(ThreadAssistant&) /afs/cern.ch/user/g/gbitzes/dev/eos/fusex/md/md.cc:1887 (eosxd+0x000000611515)
    xrootd#15 void std::__invoke_impl<void, void (metad::*)(ThreadAssistant&), metad*, ThreadAssistant&>(std::__invoke_memfun_deref, void (metad::*&&)(ThreadAssistant&), metad*&&, ThreadAssistant&) /usr/include/c++/7/bits/invoke.h:73 (eosxd+0x0000005b1fb6)
    xrootd#16 std::__invoke_result<void (metad::*)(ThreadAssistant&), metad*, ThreadAssistant&>::type std::__invoke<void (metad::*)(ThreadAssistant&), metad*, ThreadAssistant&>(void (metad::*&&)(ThreadAssistant&), metad*&&, ThreadAssistant&) /usr/include/c++/7/bits/invoke.h:95 (eosxd+0x0000005b1fb6)
    xrootd#17 decltype (__invoke((_S_declval<0ul>)(), (_S_declval<1ul>)(), (_S_declval<2ul>)())) std::thread::_Invoker<std::tuple<void (metad::*)(ThreadAssistant&), metad*, ThreadAssistant&> >::_M_invoke<0ul, 1ul, 2ul>(std::_Index_tuple<0ul, 1ul, 2ul>) /usr/include/c++/7/thread:234 (eosxd+0x0000005b1fb6)
    xrootd#18 std::thread::_Invoker<std::tuple<void (metad::*)(ThreadAssistant&), metad*, ThreadAssistant&> >::operator()() /usr/include/c++/7/thread:243 (eosxd+0x0000005b1fb6)
    xrootd#19 std::thread::_State_impl<std::thread::_Invoker<std::tuple<void (metad::*)(ThreadAssistant&), metad*, ThreadAssistant&> > >::_M_run() /usr/include/c++/7/thread:186 (eosxd+0x0000005b1fb6)
    xrootd#20 <null> <null> (libstdc++.so.6+0x0000000bc01e)

  Previous read of size 1 at 0x7b28000100d0 by thread T34:
    #0 XrdSys::IOEvents::Poller::CbkTMO() /home/gbitzes/xrootd/src/XrdSys/XrdSysIOEvents.cc:597 (libXrdUtils.so.2+0x000000034d8a)
    xrootd#1 XrdSys::IOEvents::Poller::TmoGet() /home/gbitzes/xrootd/src/XrdSys/XrdSysIOEvents.cc:1150 (libXrdUtils.so.2+0x000000035166)
    xrootd#2 XrdSys::IOEvents::PollE::Begin(XrdSysSemaphore*, int&, char const**) /home/gbitzes/xrootd/src/./XrdSys/XrdSysIOEventsPollE.icc:213 (libXrdUtils.so.2+0x000000036787)
    xrootd#3 XrdSys::IOEvents::BootStrap::Start(void*) /home/gbitzes/xrootd/src/XrdSys/XrdSysIOEvents.cc:131 (libXrdUtils.so.2+0x000000030c5c)
    xrootd#4 XrdSysThread_Xeq /home/gbitzes/xrootd/src/XrdSys/XrdSysPthread.cc:86 (libXrdUtils.so.2+0x00000002d50f)
    xrootd#5 <null> <null> (libtsan.so.0+0x0000000257eb)

  Location is heap block of size 152 at 0x7b2800010040 allocated by thread T33:
    #0 operator new(unsigned long) <null> (libtsan.so.0+0x00000006f766)
    xrootd#1 XrdCl::PollerBuiltIn::AddSocket(XrdCl::Socket*, XrdCl::SocketHandler*) /home/gbitzes/xrootd/src/XrdCl/XrdClPollerBuiltIn.cc:295 (libXrdCl.so.2+0x000000064801)
    xrootd#2 XrdCl::AsyncSocketHandler::Connect(long) /home/gbitzes/xrootd/src/XrdCl/XrdClAsyncSocketHandler.cc:167 (libXrdCl.so.2+0x000000114155)
    xrootd#3 XrdCl::Stream::EnableLink(XrdCl::PathID&) /home/gbitzes/xrootd/src/XrdCl/XrdClStream.cc:271 (libXrdCl.so.2+0x00000006db5c)
    xrootd#4 XrdCl::Stream::Send(XrdCl::Message*, XrdCl::OutgoingMsgHandler*, bool, long) /home/gbitzes/xrootd/src/XrdCl/XrdClStream.cc:316 (libXrdCl.so.2+0x00000006e0d7)
    xrootd#5 XrdCl::Channel::Send(XrdCl::Message*, XrdCl::OutgoingMsgHandler*, bool, long, XrdCl::VirtualRedirector*) /home/gbitzes/xrootd/src/XrdCl/XrdClChannel.cc:306 (libXrdCl.so.2+0x000000068686)
    xrootd#6 XrdCl::PostMaster::Send(XrdCl::URL const&, XrdCl::Message*, XrdCl::OutgoingMsgHandler*, bool, long) /home/gbitzes/xrootd/src/XrdCl/XrdClPostMaster.cc:198 (libXrdCl.so.2+0x000000066ec9)
    xrootd#7 XrdCl::MessageUtils::SendMessage(XrdCl::URL const&, XrdCl::Message*, XrdCl::ResponseHandler*, XrdCl::MessageSendParams const&) /home/gbitzes/xrootd/src/XrdCl/XrdClMessageUtils.cc:114 (libXrdCl.so.2+0x0000000b349e)
    xrootd#8 XrdCl::FileStateHandler::Open(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, unsigned short, unsigned short, XrdCl::ResponseHandler*, unsigned short) /home/gbitzes/xrootd/src/XrdCl/XrdClFileStateHandler.cc:525 (libXrdCl.so.2+0x0000000c6d3c)
    xrootd#9 XrdCl::File::Open(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, XrdCl::OpenFlags::Flags, XrdCl::Access::Mode, XrdCl::ResponseHandler*, unsigned short) /home/gbitzes/xrootd/src/XrdCl/XrdClFile.cc:108 (libXrdCl.so.2+0x0000000b9929)
    xrootd#10 XrdCl::File::Open(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, XrdCl::OpenFlags::Flags, XrdCl::Access::Mode, unsigned short) /home/gbitzes/xrootd/src/XrdCl/XrdClFile.cc:120 (libXrdCl.so.2+0x0000000b9a8b)
    xrootd#11 backend::fetchResponse(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, std::vector<eos::fusex::container, std::allocator<eos::fusex::container> >&) /afs/cern.ch/user/g/gbitzes/dev/eos/fusex/backend/backend.cc:220 (eosxd+0x0000006860e5)
    xrootd#12 backend::getMD(fuse_req*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::vector<eos::fusex::container, std::allocator<eos::fusex::container> >&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >) /afs/cern.ch/user/g/gbitzes/dev/eos/fusex/backend/backend.cc:152 (eosxd+0x000000687dd2)
    xrootd#13 metad::get(fuse_req*, unsigned long, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, bool, std::shared_ptr<metad::mdx>, char const*, bool) /afs/cern.ch/user/g/gbitzes/dev/eos/fusex/md/md.cc:576 (eosxd+0x00000061b6a5)
    xrootd#14 metad::lookup(fuse_req*, unsigned long, char const*) /afs/cern.ch/user/g/gbitzes/dev/eos/fusex/md/md.cc:176 (eosxd+0x00000061cd61)
    xrootd#15 EosFuse::lookup(fuse_req*, unsigned long, char const*) /afs/cern.ch/user/g/gbitzes/dev/eos/fusex/eosfuse.cc:1619 (eosxd+0x00000058c343)
    xrootd#16 <null> <null> (libfuse.so.2+0x000000016042)

[ ... ]

SUMMARY: ThreadSanitizer: data race /home/gbitzes/xrootd/src/XrdSys/XrdSysIOEvents.cc:1088 in XrdSys::IOEvents::Poller::TmoAdd(XrdSys::IOEvents::Channel*, int)
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amadio pushed a commit to amadio/xrootd that referenced this pull request May 12, 2023
@simonmichal
Merge pull request xrootd#15 from ellert/spelling-fixes
22f19ce 
Fixing spelling errors
amadio pushed a commit to amadio/xrootd that referenced this pull request May 17, 2023
@Jo-stfc @amadio
set flags (xrootd#15)
90bccc5 
* set flags

* commented change
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@esindril @ljanyst