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crash when use prefetto in android 10 #3

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jenics opened this issue Oct 25, 2019 · 3 comments
Open

crash when use prefetto in android 10 #3

jenics opened this issue Oct 25, 2019 · 3 comments

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@jenics
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jenics commented Oct 25, 2019

I meet a problem when use prefetto in android 10
device: Pixel XL
version: Android 10 (QP1A.191005.007.A1)
the error msg is shown below:

pprof_builder.cc:245 WARNING: The profile for 22029 was rejected due to a concurrent profile.
pprof_builder.cc:245 WARNING: The profile for 22029 was rejected due to a concurrent profile.
utils.cc:58 PERFETTO_CHECK(preamble == 0x0a) (errno: 0, Undefined error: 0)

------------------ BEGINNING OF CRASH ------------------
Signal: Illegal instruction (possibly unaligned access)
Fault addr: 0000000108D5C24F

Backtrace:

#00 _sigtramp

#1 perfetto::trace_to_text::ForEachPacketBlobInTrace(std::__1::basic_istream<char, std::__1::char_traits >*, std::__1::function<void (std::__1::unique_ptr<char [], std::__1::default_delete<char []> >, unsigned long)> const&)

#2 perfetto::trace_to_text::ForEachPacketInTrace(std::__1::basic_istream<char, std::__1::char_traits >*, std::__1::function<void (perfetto::protos::TracePacket const&)> const&)

#3 bool perfetto::trace_to_text::VisitCompletePacket<perfetto::trace_to_text::TraceToPprof(std::__1::basic_istream<char, std::__1::char_traits >*, std::__1::vector<perfetto::trace_to_text::SerializedProfile, std::__1::allocator<perfetto::trace_to_text:

#4 perfetto::trace_to_text::TraceToPprof(std::__1::basic_istream<char, std::__1::char_traits >, std::__1::vector<perfetto::trace_to_text::SerializedProfile, std::__1::allocatorperfetto::trace_to_text::SerializedProfile >, perfetto::trace_to_text::S

#5 perfetto::trace_to_text::TraceToProfile(std::__1::basic_istream<char, std::__1::char_traits >, std::__1::basic_ostream<char, std::__1::char_traits >)

#6 main
------------------ END OF CRASH ------------------
Traceback (most recent call last):
File "heap_profile.py", line 408, in
sys.exit(main(sys.argv))
File "heap_profile.py", line 373, in main
[trace_to_text_binary, 'profile', '/tmp/profile'])
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py", line 573, in check_output
raise CalledProcessError(retcode, cmd, output=output)
subprocess.CalledProcessError: Command '['/var/folders/34/4k9r7mps39d25z3vsy23v0r0chk970/T/trace_to_text-mac-47045bc6abd4f9113969211f37fdd2259b0c1cc3', 'profile', '/tmp/profile']' returned non-zero exit status -4
@fmayer
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fmayer commented Oct 25, 2019

Hey!

Thanks for getting in touch! Sorry to hear you are having problems. Did this happen once, or does this happen all the time?

Were you trying to run two profiles at the same time (as the output of pprof_builder.cc suggests)?

Could you send the output of git show-ref HEAD of the repository you are getting the tools/heap_profile from? Alternatively, could you attach the version of the script you are using?

Which process are you targeting?

@jenics
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jenics commented Oct 28, 2019

@segfaulthunter
Thanks to your replay.
your suggestion has helped me a lot.
I check my heap_profile version, the source of the tool is https://docs.perfetto.dev/#/heapprofd, the document indicate me to use the latest version"On Linux / MacOS, use the tools/heap_profile script to heap profile a process. If you are having trouble make sure you are using the latest version."
the latest version is "https://raw.githubusercontent.com/catapult-project/perfetto/master/tools/heap_profile"
it doesn't work.
i checkout android10-c2f2-release and it works.
but, it i still having some trouble with it.

the msg is showing below:
You may disconnect your device.
utils.cc:89 Skipping invalid packet
utils.cc:89 Skipping invalid packet
utils.cc:89 Skipping invalid packet
utils.cc:89 Skipping invalid packet
utils.cc:89 Skipping invalid packet
utils.cc:89 Skipping invalid packet
utils.cc:89 Skipping invalid packet
utils.cc:89 Skipping invalid packet
utils.cc:89 Skipping invalid packet
utils.cc:89 Skipping invalid packet
utils.cc:89 Skipping invalid packet
Wrote profiles to /var/folders/34/4k9r7mps39d25z3vsy23v0r0chk970/T//heap_profile-t24iaWZ (symlink /var/folders/34/4k9r7mps39d25z3vsy23v0r0chk970/T/heap_profile-latest)
These can be viewed using pprof. Googlers: head to pprof/ and upload them.

----------------------------android studio log is shown below----------------------
2019-10-29 02:58:17.410 19563-19562/? I/perfetto: client.cc:257 Detected post-fork child situation, stopping profiling.
2019-10-29 02:58:33.262 19256-19256/? I/perfetto: perfetto_cmd.cc:815 SIGINT/SIGTERM received: disabling tracing.
2019-10-29 02:58:33.264 19441-19441/? I/perfetto: heapprofd_producer.cc:515 Data source not found (harmless if using continuous_dump_config).
2019-10-29 02:59:03.268 19256-19256/? E/perfetto: perfetto_cmd.cc:819 Final flush unsuccessful.
2019-10-29 02:59:03.271 767-767/? I/perfetto: probes_producer.cc:314 Producer stop (id=92)
2019-10-29 02:59:03.279 19256-19256/? I/perfetto: perfetto_cmd.cc:677 Wrote 705536 bytes into /data/misc/perfetto-traces/profile-shell
2019-10-29 02:59:03.330 764-764/? I/perfetto: tracing_service_impl.cc:1660 Tracing session 14 ended, total sessions:3

I use the Perfetto UI open the heap_profile ,it seems like no data had been shown.
the size is 105B, and I try so many times, every file is 105B.

@fmayer
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fmayer commented Oct 28, 2019

Thanks!

Would it be possible for you to pull and attach the file /data/misc/perfetto-traces/profile-shell from your phone? It contains 700K so there should be some data. It could help me determine what's going wrong.

Could you give me the exact command you are running? Could you run adb shell getprop ro.vendor.build.fingerprint and give me the output?

primiano pushed a commit that referenced this issue Dec 3, 2019
@mspang
protozero: Fix use-of-uninitialized-value in MessageHandleBase
e09dcfb 
The diagnostic code in MessageHandleBase accesses an undefined value in
DCHECK builds:

==172==WARNING: MemorySanitizer: use-of-uninitialized-value
    #0 0x56024d8c3589 in protozero::MessageHandleBase::operator->() const ./../../third_party/perfetto/include/perfetto/protozero/message_handle.h:68:5
    #1 0x56025e928e5f in operator-> ./../../third_party/perfetto/include/perfetto/protozero/message_handle.h:116:47
    #2 0x56025e928e5f in tracing::(anonymous namespace)::ProtoWriter::AddDictEntry(char const*) ./../../services/tracing/public/cpp/perfetto/traced_value_proto_writer.cc:231:5
    #3 0x56025e921166 in tracing::(anonymous namespace)::ProtoWriter::SetInteger(char const*, int) ./../../services/tracing/public/cpp/perfetto/traced_value_proto_writer.cc:75:5
    #4 0x56025fcc90a6 in cc::benchmark_instrumentation::IssueDisplayRenderingStatsEvent() ./../../cc/benchmarks/benchmark_instrumentation.cc:24:16
    #5 0x56026026126c in viz::Display::DrawAndSwap() ./../../components/viz/service/display/display.cc:628:5
    #6 0x5602602c641e in viz::DisplayScheduler::DrawAndSwap() ./../../components/viz/service/display/display_scheduler.cc:215:38
    #7 0x5602602c4318 in viz::DisplayScheduler::AttemptDrawAndSwap() ./../../components/viz/service/display/display_scheduler.cc:488:14
    #8 0x5602602c2ec2 in viz::DisplayScheduler::OnBeginFrameDeadline() ./../../components/viz/service/display/display_scheduler.cc:504:19
    #9 0x56024b77fdb9 in base::OnceCallback<void ()>::Run() && ./../../base/callback.h:98:12
    #10 0x56025afac3d6 in Run ./../../base/callback.h:98:12
    #11 0x56025afac3d6 in base::TaskAnnotator::RunTask(char const*, base::PendingTask*) ./../../base/task/common/task_annotator.cc:142:33
    #12 0x56025b04d159 in base::sequence_manager::internal::ThreadControllerWithMessagePumpImpl::DoWorkImpl(base::sequence_manager::LazyNow*, bool*) ./../../base/task/sequence_manager/thread_controller_with_message_pump_impl.cc:365:23
    #13 0x56025b04c0f6 in base::sequence_manager::internal::ThreadControllerWithMessagePumpImpl::DoSomeWork() ./../../base/task/sequence_manager/thread_controller_with_message_pump_impl.cc:219:7
    #14 0x56025ae37368 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) ./../../base/message_loop/message_pump_default.cc:39:55
    #15 0x56025b050925 in base::sequence_manager::internal::ThreadControllerWithMessagePumpImpl::Run(bool, base::TimeDelta) ./../../base/task/sequence_manager/thread_controller_with_message_pump_impl.cc:463:12
    #16 0x56025af07594 in base::RunLoop::Run() ./../../base/run_loop.cc:156:14
    #17 0x56025b1171f0 in base::Thread::Run(base::RunLoop*) ./../../base/threading/thread.cc:305:13
    #18 0x56025b118599 in base::Thread::ThreadMain() ./../../base/threading/thread.cc:376:3
    #19 0x56025b2c2e2c in base::(anonymous namespace)::ThreadFunc(void*) ./../../base/threading/platform_thread_posix.cc:81:13
    #20 0x7f00bb5d9183 in pthread_create@@GLIBC_2.2.5 ??:0:0
    #21 0x7f00b5e7e03c in getspnam_r ??:0:0

  Uninitialized value was stored to memory at
    #0 0x56024d8afaf7 in protozero::Message::Reset(protozero::ScatteredStreamWriter*) ./../../third_party/perfetto/src/protozero/message.cc:64:14
    #1 0x56025e92052b in ProtoWriter ./../../services/tracing/public/cpp/perfetto/traced_value_proto_writer.cc:54:12
    #2 0x56025e92052b in make_unique<tracing::(anonymous namespace)::ProtoWriter, unsigned long &> ./../../buildtools/third_party/libc++/trunk/include/memory:3043:32
    #3 0x56025e92052b in tracing::(anonymous namespace)::CreateNestedValueProtoWriter(unsigned long) ./../../services/tracing/public/cpp/perfetto/traced_value_proto_writer.cc:256:10
    #4 0x56025b1ed987 in CreateWriter ./../../base/trace_event/traced_value.cc:436:12
    #5 0x56025b1ed987 in base::trace_event::TracedValue::TracedValue(unsigned long, bool) ./../../base/trace_event/traced_value.cc:459:26
    #6 0x56025fcc906d in cc::benchmark_instrumentation::IssueDisplayRenderingStatsEvent() ./../../cc/benchmarks/benchmark_instrumentation.cc:23:11
    #7 0x56026026126c in viz::Display::DrawAndSwap() ./../../components/viz/service/display/display.cc:628:5
    #8 0x5602602c641e in viz::DisplayScheduler::DrawAndSwap() ./../../components/viz/service/display/display_scheduler.cc:215:38
    #9 0x5602602c4318 in viz::DisplayScheduler::AttemptDrawAndSwap() ./../../components/viz/service/display/display_scheduler.cc:488:14
    #10 0x5602602c2ec2 in viz::DisplayScheduler::OnBeginFrameDeadline() ./../../components/viz/service/display/display_scheduler.cc:504:19
    #11 0x56024b77fdb9 in base::OnceCallback<void ()>::Run() && ./../../base/callback.h:98:12
    #12 0x56025afac3d6 in Run ./../../base/callback.h:98:12
    #13 0x56025afac3d6 in base::TaskAnnotator::RunTask(char const*, base::PendingTask*) ./../../base/task/common/task_annotator.cc:142:33
    #14 0x56025b04d159 in base::sequence_manager::internal::ThreadControllerWithMessagePumpImpl::DoWorkImpl(base::sequence_manager::LazyNow*, bool*) ./../../base/task/sequence_manager/thread_controller_with_message_pump_impl.cc:365:23
    #15 0x56025b04c0f6 in base::sequence_manager::internal::ThreadControllerWithMessagePumpImpl::DoSomeWork() ./../../base/task/sequence_manager/thread_controller_with_message_pump_impl.cc:219:7
    #16 0x56025ae37368 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) ./../../base/message_loop/message_pump_default.cc:39:55
    #17 0x56025b050925 in base::sequence_manager::internal::ThreadControllerWithMessagePumpImpl::Run(bool, base::TimeDelta) ./../../base/task/sequence_manager/thread_controller_with_message_pump_impl.cc:463:12
    #18 0x56025af07594 in base::RunLoop::Run() ./../../base/run_loop.cc:156:14
    #19 0x56025b1171f0 in base::Thread::Run(base::RunLoop*) ./../../base/threading/thread.cc:305:13
    #20 0x56025b118599 in base::Thread::ThreadMain() ./../../base/threading/thread.cc:376:3
    #21 0x56025b2c2e2c in base::(anonymous namespace)::ThreadFunc(void*) ./../../base/threading/platform_thread_posix.cc:81:13
    #22 0x7f00bb5d9183 in pthread_create@@GLIBC_2.2.5 ??:0:0

 Uninitialized value was created by a heap allocation
    #0 0x56024b74c9a9 in operator new(unsigned long) /b/swarming/w/ir/cache/builder/src/third_party/llvm/compiler-rt/lib/msan/msan_new_delete.cpp:45:35
    #1 0x56025e9203f7 in make_unique<tracing::(anonymous namespace)::ProtoWriter, unsigned long &> ./../../buildtools/third_party/libc++/trunk/include/memory:3043:28
    #2 0x56025e9203f7 in tracing::(anonymous namespace)::CreateNestedValueProtoWriter(unsigned long) ./../../services/tracing/public/cpp/perfetto/traced_value_proto_writer.cc:256:10
    #3 0x56025b1ed987 in CreateWriter ./../../base/trace_event/traced_value.cc:436:12
    #4 0x56025b1ed987 in base::trace_event::TracedValue::TracedValue(unsigned long, bool) ./../../base/trace_event/traced_value.cc:459:26
    #5 0x56025fcc906d in cc::benchmark_instrumentation::IssueDisplayRenderingStatsEvent() ./../../cc/benchmarks/benchmark_instrumentation.cc:23:11
    #6 0x56026026126c in viz::Display::DrawAndSwap() ./../../components/viz/service/display/display.cc:628:5
    #7 0x5602602c641e in viz::DisplayScheduler::DrawAndSwap() ./../../components/viz/service/display/display_scheduler.cc:215:38
    #8 0x5602602c4318 in viz::DisplayScheduler::AttemptDrawAndSwap() ./../../components/viz/service/display/display_scheduler.cc:488:14
    #9 0x5602602c2ec2 in viz::DisplayScheduler::OnBeginFrameDeadline() ./../../components/viz/service/display/display_scheduler.cc:504:19
    #10 0x56024b77fdb9 in base::OnceCallback<void ()>::Run() && ./../../base/callback.h:98:12
    #11 0x56025afac3d6 in Run ./../../base/callback.h:98:12
    #12 0x56025afac3d6 in base::TaskAnnotator::RunTask(char const*, base::PendingTask*) ./../../base/task/common/task_annotator.cc:142:33
    #13 0x56025b04d159 in base::sequence_manager::internal::ThreadControllerWithMessagePumpImpl::DoWorkImpl(base::sequence_manager::LazyNow*, bool*) ./../../base/task/sequence_manager/thread_controller_with_message_pump_impl.cc:365:23
    #14 0x56025b04c0f6 in base::sequence_manager::internal::ThreadControllerWithMessagePumpImpl::DoSomeWork() ./../../base/task/sequence_manager/thread_controller_with_message_pump_impl.cc:219:7
    #15 0x56025ae37368 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) ./../../base/message_loop/message_pump_default.cc:39:55
    #16 0x56025b050925 in base::sequence_manager::internal::ThreadControllerWithMessagePumpImpl::Run(bool, base::TimeDelta) ./../../base/task/sequence_manager/thread_controller_with_message_pump_impl.cc:463:12
    #17 0x56025af07594 in base::RunLoop::Run() ./../../base/run_loop.cc:156:14
    #18 0x56025b1171f0 in base::Thread::Run(base::RunLoop*) ./../../base/threading/thread.cc:305:13
    #19 0x56025b118599 in base::Thread::ThreadMain() ./../../base/threading/thread.cc:376:3
    #20 0x56025b2c2e2c in base::(anonymous namespace)::ThreadFunc(void*) ./../../base/threading/platform_thread_posix.cc:81:13
    #21 0x7f00bb5d9183 in pthread_create@@GLIBC_2.2.5 ??:0:0

Bug: chromium:1030032
Test: cast_shell_browsertests built with is_msan=true

Change-Id: I0f7fe0d0ec085f7a87028639e9a1ca70617fff3e
skyostil pushed a commit to skyostil/perfetto that referenced this issue Feb 11, 2023
@ddiproietto
api_integrationtest: Fix TSAN data race during shutdown
17e91c4 
TSAN reported the problem below on a CI run.

There's a possible sequence of events that can lead to this race (I'm
not sure it's the only one):
* The perfetto SDK thread calls the OnStop callback.
* The perfetto SDK thread is now inside WaitableTestEvent::Notify().
* The perfetto SDK thread sets notified_ to true and it unlocks the
  mutex, but does not call `cv_.notify_one()`.
* The main thread executes `WaitableTestEvent::Wait()`, which at this
  point can return.
* The main thread finishes executing the test and destroys the tracing
  sessions, which destroys the WaitableTestEvent and therefore `cv_`.
* The perfetto SDK thread resumes execution and tries to execute
  `cv_.notify_one()`, but that races with `cv_` destructor.

In order to prevent this race, we can just call `cv_.notify_one()` under
the lock. It might be less efficient, but it's correct.

This reverts part of https://r.android.com/1373304

https://ci.perfetto.dev/#!/logs/20221219192758--cls-2345694-4--linux-clang-x86_64-tsan

```
[00:07:40] [ RUN      ] PerfettoApiTest/PerfettoApiTest.TrackEventObserver_TwoDataSources/System
[00:07:40] [901.194] ing_service_impl.cc:980 Configured tracing session 1, #sources:1, duration:500 ms, #buffers:1, total buffer size:1024 KB, total sessions:1, uid:1337 session name: ""
[00:07:41] [901.697] ng_service_impl.cc:1921 FlushAndDisableTracing(1) done, success=1
[00:07:41] [901.698] ing_service_impl.cc:980 Configured tracing session 2, #sources:1, duration:500 ms, #buffers:1, total buffer size:1024 KB, total sessions:2, uid:1337 session name: ""
[00:07:41] [902.200] ng_service_impl.cc:1921 FlushAndDisableTracing(2) done, success=1
[00:07:42] ==================
[00:07:42] WARNING: ThreadSanitizer: data race (pid=7841)
[00:07:42]   Write of size 8 at 0x7b2000019c40 by main thread:
[00:07:42]     #0 pthread_cond_destroy ??:? (perfetto_integrationtests+0x315f8d) (BuildId: 2d1df55c4bda2cdd)
[00:07:42]     catapult-project#1 std::Cr::condition_variable::~condition_variable() ??:? (libc++.so+0xad729) (BuildId: bea413d45487d5c2)
[00:07:42]     catapult-project#2 (anonymous namespace)::PerfettoApiTest::TearDown() api_integrationtest.cc:? (perfetto_integrationtests+0x398609) (BuildId: 2d1df55c4bda2cdd)
[00:07:42]     catapult-project#3 testing::Test::Run() ??:? (perfetto_integrationtests+0x8de94f) (BuildId: 2d1df55c4bda2cdd)
[00:07:42]     catapult-project#4 testing::TestInfo::Run() ??:? (perfetto_integrationtests+0x8e0a2c) (BuildId: 2d1df55c4bda2cdd)
[00:07:42]     catapult-project#5 testing::TestSuite::Run() ??:? (perfetto_integrationtests+0x8e1b14) (BuildId: 2d1df55c4bda2cdd)
[00:07:42]     catapult-project#6 testing::internal::UnitTestImpl::RunAllTests() ??:? (perfetto_integrationtests+0x8f9e3f) (BuildId: 2d1df55c4bda2cdd)
[00:07:42]     catapult-project#7 testing::UnitTest::Run() ??:? (perfetto_integrationtests+0x8f8d36) (BuildId: 2d1df55c4bda2cdd)
[00:07:42]     catapult-project#8 main api_integrationtest_main.cc:? (perfetto_integrationtests+0x4d7aa4) (BuildId: 2d1df55c4bda2cdd)
[00:07:42]
[00:07:42]   Previous read of size 8 at 0x7b2000019c40 by thread T3:
[00:07:42]     #0 pthread_cond_signal ??:? (perfetto_integrationtests+0x315c28) (BuildId: 2d1df55c4bda2cdd)
[00:07:42]     catapult-project#1 std::Cr::condition_variable::notify_one() ??:? (libc++.so+0xad479) (BuildId: bea413d45487d5c2)
[00:07:42]     catapult-project#2 void std::Cr::__function::__policy_invoker<void ()>::__call_impl<std::Cr::__function::__default_alloc_func<(anonymous namespace)::PerfettoApiTest::NewTrace(perfetto::protos::gen::TraceConfig const&, perfetto::BackendType, int)::{lambda()catapult-project#1}, void ()> >(std::Cr::__function::__policy_storage const*) api_integrationtest.cc:? (perfetto_integrationtests+0x39ba0a) (BuildId: 2d1df55c4bda2cdd)
[00:07:42]     catapult-project#3 perfetto::base::UnixTaskRunner::RunImmediateAndDelayedTask() unix_task_runner.cc:? (perfetto_integrationtests+0x594cfd) (BuildId: 2d1df55c4bda2cdd)
[00:07:42]     catapult-project#4 perfetto::base::UnixTaskRunner::Run() unix_task_runner.cc:? (perfetto_integrationtests+0x594133) (BuildId: 2d1df55c4bda2cdd)
[00:07:42]     catapult-project#5 perfetto::base::ThreadTaskRunner::RunTaskThread(std::Cr::function<void (perfetto::base::UnixTaskRunner*)>) thread_task_runner.cc:? (perfetto_integrationtests+0x592e4f) (BuildId: 2d1df55c4bda2cdd)
[00:07:42]     catapult-project#6 void* std::Cr::__thread_proxy[abi:v160000]<std::Cr::tuple<std::Cr::unique_ptr<std::Cr::__thread_struct, std::Cr::default_delete<std::Cr::__thread_struct> >, void (perfetto::base::ThreadTaskRunner::*)(std::Cr::function<void (perfetto::base::UnixTaskRunner*)>), perfetto::base::ThreadTaskRunner*, std::Cr::function<void (perfetto::base::UnixTaskRunner*)> > >(void*) thread_task_runner.cc:? (perfetto_integrationtests+0x59380b) (BuildId: 2d1df55c4bda2cdd)
[00:07:42]
[00:07:42]   Location is heap block of size 120 at 0x7b2000019c00 allocated by main thread:
[00:07:42]     #0 operator new(unsigned long) ??:? (perfetto_integrationtests+0x3941a7) (BuildId: 2d1df55c4bda2cdd)
[00:07:42]     catapult-project#1 (anonymous namespace)::PerfettoApiTest::NewTrace(perfetto::protos::gen::TraceConfig const&, int) api_integrationtest.cc:? (perfetto_integrationtests+0x39b864) (BuildId: 2d1df55c4bda2cdd)
[00:07:42]     catapult-project#2 (anonymous namespace)::PerfettoApiTest::NewTraceWithCategories(std::Cr::vector<std::Cr::basic_string<char, std::Cr::char_traits<char>, std::Cr::allocator<char> >, std::Cr::allocator<std::Cr::basic_string<char, std::Cr::char_traits<char>, std::Cr::allocator<char> > > >, perfetto::protos::gen::TrackEventConfig, perfetto::protos::gen::TraceConfig) api_integrationtest.cc:? (perfetto_integrationtests+0x3a6385) (BuildId: 2d1df55c4bda2cdd)
[00:07:42]     catapult-project#3 (anonymous namespace)::PerfettoApiTest_TrackEventObserver_TwoDataSources_Test::TestBody() api_integrationtest.cc:? (perfetto_integrationtests+0x4a61d2) (BuildId: 2d1df55c4bda2cdd)
[00:07:42]     catapult-project#4 testing::Test::Run() ??:? (perfetto_integrationtests+0x8de8c3) (BuildId: 2d1df55c4bda2cdd)
[00:07:42]     catapult-project#5 testing::TestInfo::Run() ??:? (perfetto_integrationtests+0x8e0a2c) (BuildId: 2d1df55c4bda2cdd)
[00:07:42]     catapult-project#6 testing::TestSuite::Run() ??:? (perfetto_integrationtests+0x8e1b14) (BuildId: 2d1df55c4bda2cdd)
[00:07:42]     catapult-project#7 testing::internal::UnitTestImpl::RunAllTests() ??:? (perfetto_integrationtests+0x8f9e3f) (BuildId: 2d1df55c4bda2cdd)
[00:07:42]     catapult-project#8 testing::UnitTest::Run() ??:? (perfetto_integrationtests+0x8f8d36) (BuildId: 2d1df55c4bda2cdd)
[00:07:42]     #9 main api_integrationtest_main.cc:? (perfetto_integrationtests+0x4d7aa4) (BuildId: 2d1df55c4bda2cdd)
[00:07:42]
[00:07:42]   Thread T3 'TracingMuxer' (tid=7845, running) created by main thread at:
[00:07:42]     #0 pthread_create ??:? (perfetto_integrationtests+0x3147ab) (BuildId: 2d1df55c4bda2cdd)
[00:07:42]     catapult-project#1 perfetto::base::ThreadTaskRunner::ThreadTaskRunner(std::Cr::basic_string<char, std::Cr::char_traits<char>, std::Cr::allocator<char> > const&) thread_task_runner.cc:? (perfetto_integrationtests+0x592b80) (BuildId: 2d1df55c4bda2cdd)
[00:07:42]     catapult-project#2 perfetto::(anonymous namespace)::PlatformPosix::CreateTaskRunner(perfetto::Platform::CreateTaskRunnerArgs const&) platform_posix.cc:? (perfetto_integrationtests+0x8c524a) (BuildId: 2d1df55c4bda2cdd)
[00:07:42]     catapult-project#3 perfetto::internal::TracingMuxerImpl::TracingMuxerImpl(perfetto::TracingInitArgs const&) tracing_muxer_impl.cc:? (perfetto_integrationtests+0x5a731c) (BuildId: 2d1df55c4bda2cdd)
[00:07:42]     catapult-project#4 perfetto::internal::TracingMuxerImpl::InitializeInstance(perfetto::TracingInitArgs const&) tracing_muxer_impl.cc:? (perfetto_integrationtests+0x5ad7fb) (BuildId: 2d1df55c4bda2cdd)
[00:07:42]     catapult-project#5 perfetto::Tracing::InitializeInternal(perfetto::TracingInitArgs const&) tracing.cc:? (perfetto_integrationtests+0x5c0f0d) (BuildId: 2d1df55c4bda2cdd)
[00:07:42]     catapult-project#6 (anonymous namespace)::ConcurrentSessionTest_ConcurrentBackends_Test::TestBody() api_integrationtest.cc:? (perfetto_integrationtests+0x4c3af4) (BuildId: 2d1df55c4bda2cdd)
[00:07:42]     catapult-project#7 testing::Test::Run() ??:? (perfetto_integrationtests+0x8de8c3) (BuildId: 2d1df55c4bda2cdd)
[00:07:42]     catapult-project#8 testing::TestInfo::Run() ??:? (perfetto_integrationtests+0x8e0a2c) (BuildId: 2d1df55c4bda2cdd)
[00:07:42]     #9 testing::TestSuite::Run() ??:? (perfetto_integrationtests+0x8e1b14) (BuildId: 2d1df55c4bda2cdd)
[00:07:42]     #10 testing::internal::UnitTestImpl::RunAllTests() ??:? (perfetto_integrationtests+0x8f9e3f) (BuildId: 2d1df55c4bda2cdd)
[00:07:42]     #11 testing::UnitTest::Run() ??:? (perfetto_integrationtests+0x8f8d36) (BuildId: 2d1df55c4bda2cdd)
[00:07:42]     #12 main api_integrationtest_main.cc:? (perfetto_integrationtests+0x4d7aa4) (BuildId: 2d1df55c4bda2cdd)
[00:07:42]
[00:07:42] SUMMARY: ThreadSanitizer: data race ??:? in __interceptor_pthread_cond_destroy
[00:07:42] ==================
```

Change-Id: Ic822dba258b81a6c032633cf63763bd578739024
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@fmayer @jenics