Firefox is blocked with the log ###!!! ERROR: Potential deadlock detected The backtrace of the main thread of the chrome process is as following lines #2 0x00007ffff64cbb52 in PR_Lock (lock=0x7ffff6bac920) at /home/thinker/progm/mozilla-central/nsprpub/pr/src/pthreads/ptsynch.c:177 #3 0x00007fffe79eb86f in mozilla::OffTheBooksMutex::Lock() (this=0x7ffff6b1a4e0) at /home/thinker/progm/mozilla-central/xpcom/threads/BlockingResourceBase.cpp:382 #4 0x00007fffe9ef4441 in profiler_start(int, double, char const**, unsigned int, char const**, unsigned int) (aEntries=10000000, aInterval=1, aFeatures=0x7fffb710e490, aFeatureCount=6, aThreadNameFilters=0x7fffb7abda90, aFilterCount=<optimized out>) at /home/thinker/progm/mozilla-central/tools/profiler/core/platform.cpp:1992 #5 0x00007fffe9ef4a7a in nsProfiler::StartProfiler(unsigned int, double, char const**, unsigned int, char const**, unsigned int) (this=<optimized out>, aEntries=<optimized out>, aInterval=<optimized out>, aFeatures=<optimized out>, aFeatureCount=<optimized out>, aThreadNameFilters=<optimized out>, aFilterCount=<optimized out>) at /home/thinker/progm/mozilla-central/tools/profiler/gecko/nsProfiler.cpp:92 #6 0x00007fffe79fe776 in NS_InvokeByIndex () at /home/thinker/progm/mozilla-central/xpcom/reflect/xptcall/md/unix/xptcinvoke_asm_x86_64_unix.S:88
There is a deadlock in |TracedTaskCommon::Init()|.
Attachment #8841413 - Flags: review?(cyu)
Summary: Deadlock during starting profiler → Deadlock caused by TaskTracer
Attachment #8841413 - Flags: review?(cyu) → review+
Pushed by firstname.lastname@example.org: https://hg.mozilla.org/integration/mozilla-inbound/rev/acf42887c8a7 Fix the deadlock caused by TaskTracer. r=cervantes
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