Example backtrace: >>> bt #0 0x00007ffff4e7b727 in raise () from /lib/x86_64-linux-gnu/libpthread.so.0 #1 0x00005555556462cc in __interceptor_raise () at /data/mci/76345995686809862f0b80d49f4a9e31/toolchain-builder/tmp/build-llvm.sh-IHB/llvm/projects/compiler-rt/lib/tsan/rtl/tsan_interceptors.cc:1998 #2 0x00005555556bacb2 in mongo::(anonymous namespace)::StackTraceSigAltStackTest::tryHandler(void (*)( int , siginfo_t*, void*))::{lambda()#2}:: operator ()() const ( this =0x7b0c00000c10) at src/mongo/util/stacktrace_test.cpp:435 #3 0x00005555556ba981 in std::__invoke_impl<void, mongo::(anonymous namespace)::StackTraceSigAltStackTest::tryHandler(void (*)( int , siginfo_t*, void*))::{lambda()#2}>(std::__invoke_other, mongo::(anonymous namespace)::StackTraceSigAltStackTest::tryHandler(void (*)( int , siginfo_t*, void*))::{lambda()#2}&&) (__f=...) at /opt/mongodbtoolchain/revisions/e5348beb43e147b74a40f4ca5fb05a330ea646cf/stow/gcc-v3.U0D/lib/gcc/x86_64-mongodb-linux/8.2.0/../../../../include/c++/8.2.0/bits/invoke.h:60 #4 0x00005555556ba921 in std::__invoke<mongo::(anonymous namespace)::StackTraceSigAltStackTest::tryHandler(void (*)( int , siginfo_t*, void*))::{lambda()#2}>(std::__invoke_result&&, (mongo::(anonymous namespace)::StackTraceSigAltStackTest::tryHandler(void (*)( int , siginfo_t*, void*))::{lambda()#2}&&)...) (__fn=...) at /opt/mongodbtoolchain/revisions/e5348beb43e147b74a40f4ca5fb05a330ea646cf/stow/gcc-v3.U0D/lib/gcc/x86_64-mongodb-linux/8.2.0/../../../../include/c++/8.2.0/bits/invoke.h:95 #5 0x00005555556ba87d in std::__apply_impl<mongo::(anonymous namespace)::StackTraceSigAltStackTest::tryHandler(void (*)( int , siginfo_t*, void*))::{lambda()#2}, std::tuple<>>(mongo::(anonymous namespace)::StackTraceSigAltStackTest::tryHandler(void (*)( int , siginfo_t*, void*))::{lambda()#2}&&, std::tuple<>&&, std::integer_sequence<unsigned long >) (__f=..., __t=...) at /opt/mongodbtoolchain/revisions/e5348beb43e147b74a40f4ca5fb05a330ea646cf/stow/gcc-v3.U0D/lib/gcc/x86_64-mongodb-linux/8.2.0/../../../../include/c++/8.2.0/tuple:1678 #6 0x00005555556ba80e in std::apply<mongo::(anonymous namespace)::StackTraceSigAltStackTest::tryHandler(void (*)( int , siginfo_t*, void*))::{lambda()#2}, std::tuple<> >(mongo::(anonymous namespace)::StackTraceSigAltStackTest::tryHandler(void (*)( int , siginfo_t*, void*))::{lambda()#2}&&, std::tuple<>&&) (__f=..., __t=...) at /opt/mongodbtoolchain/revisions/e5348beb43e147b74a40f4ca5fb05a330ea646cf/stow/gcc-v3.U0D/lib/gcc/x86_64-mongodb-linux/8.2.0/../../../../include/c++/8.2.0/tuple:1687 #7 0x00005555556ba751 in mongo::stdx::thread::thread<mongo::(anonymous namespace)::StackTraceSigAltStackTest::tryHandler(void (*)( int , siginfo_t*, void*))::{lambda()#2}, , 0>(mongo::(anonymous namespace)::StackTraceSigAltStackTest::tryHandler(void (*)( int , siginfo_t*, void*))::{lambda()#2})::{lambda()#1}:: operator ()() ( this =0x7b0c00000c08) at src/mongo/stdx/thread.h:186 #8 0x00005555556ba6c1 in std::__invoke_impl<void, mongo::stdx::thread::thread<mongo::(anonymous namespace)::StackTraceSigAltStackTest::tryHandler(void (*)( int , siginfo_t*, void*))::{lambda()#2}, , 0>(mongo::(anonymous namespace)::StackTraceSigAltStackTest::tryHandler(void (*)( int , siginfo_t*, void*))::{lambda()#2})::{lambda()#1}>(std::__invoke_other, mongo::stdx::thread::thread<mongo::(anonymous namespace)::StackTraceSigAltStackTest::tryHandler(void (*)( int , siginfo_t*, void*))::{lambda()#2}, , 0>(mongo::(anonymous namespace)::StackTraceSigAltStackTest::tryHandler(void (*)( int , siginfo_t*, void*))::{lambda()#2})::{lambda()#1}&&) (__f=...) at /opt/mongodbtoolchain/revisions/e5348beb43e147b74a40f4ca5fb05a330ea646cf/stow/gcc-v3.U0D/lib/gcc/x86_64-mongodb-linux/8.2.0/../../../../include/c++/8.2.0/bits/invoke.h:60 #9 0x00005555556ba5e1 in std::__invoke<mongo::stdx::thread::thread<mongo::(anonymous namespace)::StackTraceSigAltStackTest::tryHandler(void (*)( int , siginfo_t*, void*))::{lambda()#2}, , 0>(mongo::(anonymous namespace)::StackTraceSigAltStackTest::tryHandler(void (*)( int , siginfo_t*, void*))::{lambda()#2})::{lambda()#1}> (__fn=...) at /opt/mongodbtoolchain/revisions/e5348beb43e147b74a40f4ca5fb05a330ea646cf/stow/gcc-v3.U0D/lib/gcc/x86_64-mongodb-linux/8.2.0/../../../../include/c++/8.2.0/bits/invoke.h:95 #10 0x00005555556ba599 in std::thread::_Invoker<std::tuple<mongo::stdx::thread::thread<mongo::(anonymous namespace)::StackTraceSigAltStackTest::tryHandler(void (*)( int , siginfo_t*, void*))::{lambda()#2}, , 0>(mongo::(anonymous namespace)::StackTraceSigAltStackTest::tryHandler(void (*)( int , siginfo_t*, void*))::{lambda()#2})::{lambda()#1}> >::_M_invoke<0ul> ( this =0x7b0c00000c08) at /opt/mongodbtoolchain/revisions/e5348beb43e147b74a40f4ca5fb05a330ea646cf/stow/gcc-v3.U0D/lib/gcc/x86_64-mongodb-linux/8.2.0/../../../../include/c++/8.2.0/thread:234 #11 0x00005555556ba549 in std::thread::_Invoker<std::tuple<mongo::stdx::thread::thread<mongo::(anonymous namespace)::StackTraceSigAltStackTest::tryHandler(void (*)( int , siginfo_t*, void*))::{lambda()#2}, , 0>(mongo::(anonymous namespace)::StackTraceSigAltStackTest::tryHandler(void (*)( int , siginfo_t*, void*))::{lambda()#2})::{lambda()#1}> >:: operator ()() ( this =0x7b0c00000c08) at /opt/mongodbtoolchain/revisions/e5348beb43e147b74a40f4ca5fb05a330ea646cf/stow/gcc-v3.U0D/lib/gcc/x86_64-mongodb-linux/8.2.0/../../../../include/c++/8.2.0/thread:243 #12 0x00005555556ba2cd in std::thread::_State_impl<std::thread::_Invoker<std::tuple<mongo::stdx::thread::thread<mongo::(anonymous namespace)::StackTraceSigAltStackTest::tryHandler(void (*)( int , siginfo_t*, void*))::{lambda()#2}, , 0>(mongo::(anonymous namespace)::StackTraceSigAltStackTest::tryHandler(void (*)( int , siginfo_t*, void*))::{lambda()#2})::{lambda()#1}> > >::_M_run() ( this =0x7b0c00000c00) at /opt/mongodbtoolchain/revisions/e5348beb43e147b74a40f4ca5fb05a330ea646cf/stow/gcc-v3.U0D/lib/gcc/x86_64-mongodb-linux/8.2.0/../../../../include/c++/8.2.0/thread:186 #13 0x00005555557247df in std::execute_native_thread_routine (__p=0x7b0c00000c00) at ../../../../../src/combined/libstdc++-v3/src/c++11/thread.cc:80 #14 0x000055555563fa03 in __tsan_thread_start_func () at /data/mci/76345995686809862f0b80d49f4a9e31/toolchain-builder/tmp/build-llvm.sh-IHB/llvm/projects/compiler-rt/lib/tsan/rtl/tsan_interceptors.cc:955 #15 0x00007ffff4e706db in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0 #16 0x00007ffff498188f in clone () from /lib/x86_64-linux-gnu/libc.so.6