TSAN failure during memcached_testapp.ep.TransportProtocols/SaslTest

[2021-05-12T08:40:05.482Z] [ RUN      ] TransportProtocols/SaslTest.UnknownUserPlain/McbpSsl

[2021-05-12T08:40:05.482Z] ==================

[2021-05-12T08:40:05.482Z] WARNING: ThreadSanitizer: signal-unsafe call inside of a signal (pid=119406)

[2021-05-12T08:40:05.482Z]     #0 malloc <null> (libtsan.so.0+0x33081)

[2021-05-12T08:40:05.482Z]     #1 <null> <null> (ld-linux-x86-64.so.2+0xebb8)

[2021-05-12T08:40:05.482Z]     #2 print_backtrace(void (*)(void*, char const*), void*) ../platform/src/backtrace.cc:126 (memcached+0xdf8b20)

[2021-05-12T08:40:05.482Z]     #3 dump_stack() ../kv_engine/utilities/breakpad.cc:84 (memcached+0xda055a)

[2021-05-12T08:40:05.482Z]     #4 dumpCallback(google_breakpad::MinidumpDescriptor const&, void*, bool) ../kv_engine/utilities/breakpad.cc:124 (memcached+0xda0321)

[2021-05-12T08:40:05.482Z]     #5 google_breakpad::ExceptionHandler::GenerateDump(google_breakpad::ExceptionHandler::CrashContext*) src/client/linux/handler/exception_handler.cc:566 (memcached+0xdc1539)

[2021-05-12T08:40:05.482Z]     #6 epoll_dispatch /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465 (libevent_core-2.1.so.7+0x21d64)

[2021-05-12T08:40:05.482Z]     #7 main ../kv_engine/daemon/main.cc:30 (memcached+0x588060)

[2021-05-12T08:40:05.482Z] 

[2021-05-12T08:40:05.482Z] SUMMARY: ThreadSanitizer: signal-unsafe call inside of a signal (/opt/gcc-10.2.0/lib64/libtsan.so.0+0x33081) in __interceptor_malloc