[PROTON-2133] c-fdlimit-tests with epoll is not tsan clean

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: proton-c-0.29.0
• Component/s: proton-c
• Labels: race-condition tsan
• Assignee: Unassigned
• Reporter: Jiri Daněk
• Created: 07/Nov/19 10:13
• Updated: 27/Aug/21 19:01

Description

6: Test timeout computed to be: 1500
6: E
6: ======================================================================
6: ERROR: test_fd_limit_broker (__main__.FdLimitTest)
6: Check behaviour when running out of file descriptors on accept
6: ----------------------------------------------------------------------
6: Traceback (most recent call last):
6:   File "/home/jdanek/repos/qpid/qpid-proton/c/tests/fdlimit.py", line 87, in test_fd_limit_broker
6:     self.assertIn("10 messages received", test_subprocess.check_output(["receive", "", b.port], universal_newlines=True))
6:   File "/home/jdanek/repos/qpid/qpid-proton/tests/py/test_subprocess.py", line 110, in __exit__
6:     self.on_exit()
6:   File "/home/jdanek/repos/qpid/qpid-proton/tests/py/test_subprocess.py", line 84, in check_kill
6:     raise TestProcessError(self, "check_kill found error output")
6: TestProcessError: ['prlimit', '-n256', 'broker', '', '0'] pid=7358 exit=-9: check_kill found error output
6: ________________________________ stderr(7358) ________________________________
6: ==================
6: WARNING: ThreadSanitizer: data race (pid=7358)
6:   Write of size 4 at 0x7b7000029818 by thread T3:
6:     #0 stop_polling /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:313:10 (libqpid-proton-proactor.so.1+0xd22a)
6:     #1 pconnection_cleanup /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:896:3 (libqpid-proton-proactor.so.1+0xcacb)
6:     #2 pconnection_done /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:1044:7 (libqpid-proton-proactor.so.1+0xa670)
6:     #3 pn_proactor_done /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:2166:5 (libqpid-proton-proactor.so.1+0xa670)
6:     #4 broker_thread /home/jdanek/repos/qpid/qpid-proton/c/examples/broker.c:439:5 (broker+0x4cb4e6)
6: 
6:   Previous read of size 4 at 0x7b7000029818 by thread T2 (mutexes: write M2131):
6:     #0 rearm /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:720:48 (libqpid-proton-proactor.so.1+0x8703)
6:     #1 pconnection_rearm /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:1014:5 (libqpid-proton-proactor.so.1+0xcf78)
6:     #2 pconnection_done /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:1051:14 (libqpid-proton-proactor.so.1+0x9e24)
6:     #3 pn_proactor_done /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:2166:5 (libqpid-proton-proactor.so.1+0x9e24)
6:     #4 broker_thread /home/jdanek/repos/qpid/qpid-proton/c/examples/broker.c:439:5 (broker+0x4cb4e6)
6: 
6:   Location is heap block of size 1880 at 0x7b7000029800 allocated by thread T2:
6:     #0 calloc <null> (broker+0x45b124)
6:     #1 pn_listener_accept2 /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:1795:40 (libqpid-proton-proactor.so.1+0x7d91)
6:     #2 handle /home/jdanek/repos/qpid/qpid-proton/c/examples/broker.c:306:6 (broker+0x4cb794)
6:     #3 broker_thread /home/jdanek/repos/qpid/qpid-proton/c/examples/broker.c:437:14 (broker+0x4cb794)
6: 
6:   Mutex M2131 (0x7b7000029ee8) created at:
6:     #0 pthread_mutex_init <null> (broker+0x42e922)
6:     #1 pmutex_init /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:105:7 (libqpid-proton-proactor.so.1+0x560a)
6:     #2 pconnection_setup /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:853:3 (libqpid-proton-proactor.so.1+0x560a)
6:     #3 pn_listener_accept2 /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:1797:21 (libqpid-proton-proactor.so.1+0x7dd8)
6:     #4 handle /home/jdanek/repos/qpid/qpid-proton/c/examples/broker.c:306:6 (broker+0x4cb794)
6:     #5 broker_thread /home/jdanek/repos/qpid/qpid-proton/c/examples/broker.c:437:14 (broker+0x4cb794)
6: 
6:   Thread T3 (tid=7362, running) created by main thread at:
6:     #0 pthread_create <null> (broker+0x42e5a2)
6:     #1 main /home/jdanek/repos/qpid/qpid-proton/c/examples/broker.c:471:5 (broker+0x4cb3af)
6: 
6:   Thread T2 (tid=7361, running) created by main thread at:
6:     #0 pthread_create <null> (broker+0x42e5a2)
6:     #1 main /home/jdanek/repos/qpid/qpid-proton/c/examples/broker.c:471:5 (broker+0x4cb3af)
6: 
6: SUMMARY: ThreadSanitizer: data race /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:313:10 in stop_polling
6: ==================
6: ==================
6: WARNING: ThreadSanitizer: data race (pid=7358)
6:   Write of size 8 at 0x7ba0000000e0 by thread T3:
6:     #0 close <null> (broker+0x447563)
6:     #1 pclosefd /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:805:13 (libqpid-proton-proactor.so.1+0xcaf4)
6:     #2 pconnection_cleanup /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:898:5 (libqpid-proton-proactor.so.1+0xcaf4)
6:     #3 pconnection_done /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:1044:7 (libqpid-proton-proactor.so.1+0xa670)
6:     #4 pn_proactor_done /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:2166:5 (libqpid-proton-proactor.so.1+0xa670)
6:     #5 broker_thread /home/jdanek/repos/qpid/qpid-proton/c/examples/broker.c:439:5 (broker+0x4cb4e6)
6: 
6:   Previous read of size 8 at 0x7ba0000000e0 by thread T2:
6:     [failed to restore the stack]
6: 
6:   Location is file descriptor 14 created by thread T2 at:
6:     #0 accept <null> (broker+0x435375)
6:     #1 listener_accept_lh /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:1682:27 (libqpid-proton-proactor.so.1+0xdd1c)
6:     #2 listener_process /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:1718:9 (libqpid-proton-proactor.so.1+0xdd1c)
6:     #3 proactor_do_epoll /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:2146:17 (libqpid-proton-proactor.so.1+0x99ad)
6:     #4 pn_proactor_wait /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:2156:10 (libqpid-proton-proactor.so.1+0x95fe)
6:     #5 broker_thread /home/jdanek/repos/qpid/qpid-proton/c/examples/broker.c:434:32 (broker+0x4cb503)
6: 
6:   Thread T3 (tid=7362, running) created by main thread at:
6:     #0 pthread_create <null> (broker+0x42e5a2)
6:     #1 main /home/jdanek/repos/qpid/qpid-proton/c/examples/broker.c:471:5 (broker+0x4cb3af)
6: 
6:   Thread T2 (tid=7361, running) created by main thread at:
6:     #0 pthread_create <null> (broker+0x42e5a2)
6:     #1 main /home/jdanek/repos/qpid/qpid-proton/c/examples/broker.c:471:5 (broker+0x4cb3af)
6: 
6: SUMMARY: ThreadSanitizer: data race (/home/jdanek/repos/qpid/qpid-proton/cmake-build-debug-gcc/c/examples/broker+0x447563) in close
6: ==================
6: ==================
6: WARNING: ThreadSanitizer: data race (pid=7358)
6:   Write of size 4 at 0x7b7000017818 by main thread:
6:     #0 stop_polling /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:313:10 (libqpid-proton-proactor.so.1+0xd22a)
6:     #1 pconnection_cleanup /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:896:3 (libqpid-proton-proactor.so.1+0xcacb)
6:     #2 pconnection_process /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c (libqpid-proton-proactor.so.1+0xca31)
6:     #3 proactor_do_epoll /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c (libqpid-proton-proactor.so.1+0x9a17)
6:     #4 pn_proactor_wait /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:2156:10 (libqpid-proton-proactor.so.1+0x95fe)
6:     #5 broker_thread /home/jdanek/repos/qpid/qpid-proton/c/examples/broker.c:434:32 (broker+0x4cb503)
6:     #6 main /home/jdanek/repos/qpid/qpid-proton/c/examples/broker.c:473:3 (broker+0x4cb3d3)
6: 
6:   Previous read of size 4 at 0x7b7000017818 by thread T2 (mutexes: write M2241):
6:     #0 rearm /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:720:48 (libqpid-proton-proactor.so.1+0x8703)
6:     #1 pconnection_rearm /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:1014:5 (libqpid-proton-proactor.so.1+0xcf78)
6:     #2 pconnection_done /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:1051:14 (libqpid-proton-proactor.so.1+0x9e24)
6:     #3 pn_proactor_done /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:2166:5 (libqpid-proton-proactor.so.1+0x9e24)
6:     #4 broker_thread /home/jdanek/repos/qpid/qpid-proton/c/examples/broker.c:439:5 (broker+0x4cb4e6)
6: 
6:   Location is heap block of size 1880 at 0x7b7000017800 allocated by thread T2:
6:     #0 calloc <null> (broker+0x45b124)
6:     #1 pn_listener_accept2 /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:1795:40 (libqpid-proton-proactor.so.1+0x7d91)
6:     #2 handle /home/jdanek/repos/qpid/qpid-proton/c/examples/broker.c:306:6 (broker+0x4cb794)
6:     #3 broker_thread /home/jdanek/repos/qpid/qpid-proton/c/examples/broker.c:437:14 (broker+0x4cb794)
6: 
6:   Mutex M2241 (0x7b7000017ee8) created at:
6:     #0 pthread_mutex_init <null> (broker+0x42e922)
6:     #1 pmutex_init /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:105:7 (libqpid-proton-proactor.so.1+0x560a)
6:     #2 pconnection_setup /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:853:3 (libqpid-proton-proactor.so.1+0x560a)
6:     #3 pn_listener_accept2 /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:1797:21 (libqpid-proton-proactor.so.1+0x7dd8)
6:     #4 handle /home/jdanek/repos/qpid/qpid-proton/c/examples/broker.c:306:6 (broker+0x4cb794)
6:     #5 broker_thread /home/jdanek/repos/qpid/qpid-proton/c/examples/broker.c:437:14 (broker+0x4cb794)
6: 
6:   Thread T2 (tid=7361, running) created by main thread at:
6:     #0 pthread_create <null> (broker+0x42e5a2)
6:     #1 main /home/jdanek/repos/qpid/qpid-proton/c/examples/broker.c:471:5 (broker+0x4cb3af)
6: 
6: SUMMARY: ThreadSanitizer: data race /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:313:10 in stop_polling
6: ==================
6: ==================
6: WARNING: ThreadSanitizer: data race (pid=7358)
6:   Write of size 4 at 0x7b7000013018 by thread T1:
6:     #0 stop_polling /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:313:10 (libqpid-proton-proactor.so.1+0xd22a)
6:     #1 pconnection_cleanup /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:896:3 (libqpid-proton-proactor.so.1+0xcacb)
6:     #2 pconnection_process /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c (libqpid-proton-proactor.so.1+0xca31)
6:     #3 proactor_do_epoll /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c (libqpid-proton-proactor.so.1+0x9a17)
6:     #4 pn_proactor_wait /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:2156:10 (libqpid-proton-proactor.so.1+0x95fe)
6:     #5 broker_thread /home/jdanek/repos/qpid/qpid-proton/c/examples/broker.c:434:32 (broker+0x4cb503)
6: 
6:   Previous read of size 4 at 0x7b7000013018 by thread T2 (mutexes: write M2164):
6:     #0 rearm /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:720:48 (libqpid-proton-proactor.so.1+0x8703)
6:     #1 pconnection_rearm /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:1014:5 (libqpid-proton-proactor.so.1+0xcf78)
6:     #2 pconnection_done /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:1051:14 (libqpid-proton-proactor.so.1+0x9e24)
6:     #3 pn_proactor_done /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:2166:5 (libqpid-proton-proactor.so.1+0x9e24)
6:     #4 broker_thread /home/jdanek/repos/qpid/qpid-proton/c/examples/broker.c:439:5 (broker+0x4cb4e6)
6: 
6:   Location is heap block of size 1880 at 0x7b7000013000 allocated by thread T1:
6:     #0 calloc <null> (broker+0x45b124)
6:     #1 pn_listener_accept2 /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:1795:40 (libqpid-proton-proactor.so.1+0x7d91)
6:     #2 handle /home/jdanek/repos/qpid/qpid-proton/c/examples/broker.c:306:6 (broker+0x4cb794)
6:     #3 broker_thread /home/jdanek/repos/qpid/qpid-proton/c/examples/broker.c:437:14 (broker+0x4cb794)
6: 
6:   Mutex M2164 (0x7b70000136e8) created at:
6:     #0 pthread_mutex_init <null> (broker+0x42e922)
6:     #1 pmutex_init /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:105:7 (libqpid-proton-proactor.so.1+0x560a)
6:     #2 pconnection_setup /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:853:3 (libqpid-proton-proactor.so.1+0x560a)
6:     #3 pn_listener_accept2 /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:1797:21 (libqpid-proton-proactor.so.1+0x7dd8)
6:     #4 handle /home/jdanek/repos/qpid/qpid-proton/c/examples/broker.c:306:6 (broker+0x4cb794)
6:     #5 broker_thread /home/jdanek/repos/qpid/qpid-proton/c/examples/broker.c:437:14 (broker+0x4cb794)
6: 
6:   Thread T1 (tid=7360, running) created by main thread at:
6:     #0 pthread_create <null> (broker+0x42e5a2)
6:     #1 main /home/jdanek/repos/qpid/qpid-proton/c/examples/broker.c:471:5 (broker+0x4cb3af)
6: 
6:   Thread T2 (tid=7361, running) created by main thread at:
6:     #0 pthread_create <null> (broker+0x42e5a2)
6:     #1 main /home/jdanek/repos/qpid/qpid-proton/c/examples/broker.c:471:5 (broker+0x4cb3af)
6: 
6: SUMMARY: ThreadSanitizer: data race /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:313:10 in stop_polling
6: ==================
6: ==================
6: WARNING: ThreadSanitizer: data race (pid=7358)
6:   Write of size 8 at 0x7ba0000000d0 by thread T1:
6:     #0 close <null> (broker+0x447563)
6:     #1 pclosefd /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:805:13 (libqpid-proton-proactor.so.1+0xcaf4)
6:     #2 pconnection_cleanup /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:898:5 (libqpid-proton-proactor.so.1+0xcaf4)
6:     #3 pconnection_process /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c (libqpid-proton-proactor.so.1+0xca31)
6:     #4 proactor_do_epoll /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c (libqpid-proton-proactor.so.1+0x9a17)
6:     #5 pn_proactor_wait /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:2156:10 (libqpid-proton-proactor.so.1+0x95fe)
6:     #6 broker_thread /home/jdanek/repos/qpid/qpid-proton/c/examples/broker.c:434:32 (broker+0x4cb503)
6: 
6:   Previous read of size 8 at 0x7ba0000000d0 by thread T2:
6:     [failed to restore the stack]
6: 
6:   Location is file descriptor 13 created by thread T1 at:
6:     #0 accept <null> (broker+0x435375)
6:     #1 listener_accept_lh /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:1682:27 (libqpid-proton-proactor.so.1+0xdd1c)
6:     #2 listener_process /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:1718:9 (libqpid-proton-proactor.so.1+0xdd1c)
6:     #3 proactor_do_epoll /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:2146:17 (libqpid-proton-proactor.so.1+0x99ad)
6:     #4 pn_proactor_wait /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:2156:10 (libqpid-proton-proactor.so.1+0x95fe)
6:     #5 broker_thread /home/jdanek/repos/qpid/qpid-proton/c/examples/broker.c:434:32 (broker+0x4cb503)
6: 
6:   Thread T1 (tid=7360, running) created by main thread at:
6:     #0 pthread_create <null> (broker+0x42e5a2)
6:     #1 main /home/jdanek/repos/qpid/qpid-proton/c/examples/broker.c:471:5 (broker+0x4cb3af)
6: 
6:   Thread T2 (tid=7361, running) created by main thread at:
6:     #0 pthread_create <null> (broker+0x42e5a2)
6:     #1 main /home/jdanek/repos/qpid/qpid-proton/c/examples/broker.c:471:5 (broker+0x4cb3af)
6: 
6: SUMMARY: ThreadSanitizer: data race (/home/jdanek/repos/qpid/qpid-proton/cmake-build-debug-gcc/c/examples/broker+0x447563) in close
6: ==================
6: ==================
6: WARNING: ThreadSanitizer: data race (pid=7358)
6:   Write of size 8 at 0x7ba000000150 by main thread:
6:     #0 close <null> (broker+0x447563)
6:     #1 pclosefd /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:805:13 (libqpid-proton-proactor.so.1+0xcaf4)
6:     #2 pconnection_cleanup /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:898:5 (libqpid-proton-proactor.so.1+0xcaf4)
6:     #3 pconnection_process /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c (libqpid-proton-proactor.so.1+0xca31)
6:     #4 proactor_do_epoll /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c (libqpid-proton-proactor.so.1+0x9a17)
6:     #5 pn_proactor_wait /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:2156:10 (libqpid-proton-proactor.so.1+0x95fe)
6:     #6 broker_thread /home/jdanek/repos/qpid/qpid-proton/c/examples/broker.c:434:32 (broker+0x4cb503)
6:     #7 main /home/jdanek/repos/qpid/qpid-proton/c/examples/broker.c:473:3 (broker+0x4cb3d3)
6: 
6:   Previous read of size 8 at 0x7ba000000150 by thread T2 (mutexes: write M2241):
6:     #0 epoll_ctl <null> (broker+0x42f1a8)
6:     #1 rearm /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:720:7 (libqpid-proton-proactor.so.1+0x871a)
6:     #2 pconnection_rearm /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:1014:5 (libqpid-proton-proactor.so.1+0xcf78)
6:     #3 pconnection_done /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:1051:14 (libqpid-proton-proactor.so.1+0x9e24)
6:     #4 pn_proactor_done /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:2166:5 (libqpid-proton-proactor.so.1+0x9e24)
6:     #5 broker_thread /home/jdanek/repos/qpid/qpid-proton/c/examples/broker.c:439:5 (broker+0x4cb4e6)
6: 
6:   Location is file descriptor 21 created by thread T2 at:
6:     #0 accept <null> (broker+0x435375)
6:     #1 listener_accept_lh /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:1682:27 (libqpid-proton-proactor.so.1+0xdd1c)
6:     #2 listener_process /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:1718:9 (libqpid-proton-proactor.so.1+0xdd1c)
6:     #3 proactor_do_epoll /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:2146:17 (libqpid-proton-proactor.so.1+0x99ad)
6:     #4 pn_proactor_wait /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:2156:10 (libqpid-proton-proactor.so.1+0x95fe)
6:     #5 broker_thread /home/jdanek/repos/qpid/qpid-proton/c/examples/broker.c:434:32 (broker+0x4cb503)
6: 
6:   Mutex M2241 (0x7b7000017ee8) created at:
6:     #0 pthread_mutex_init <null> (broker+0x42e922)
6:     #1 pmutex_init /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:105:7 (libqpid-proton-proactor.so.1+0x560a)
6:     #2 pconnection_setup /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:853:3 (libqpid-proton-proactor.so.1+0x560a)
6:     #3 pn_listener_accept2 /home/jdanek/repos/qpid/qpid-proton/c/src/proactor/epoll.c:1797:21 (libqpid-proton-proactor.so.1+0x7dd8)
6:     #4 handle /home/jdanek/repos/qpid/qpid-proton/c/examples/broker.c:306:6 (broker+0x4cb794)
6:     #5 broker_thread /home/jdanek/repos/qpid/qpid-proton/c/examples/broker.c:437:14 (broker+0x4cb794)
6: 
6:   Thread T2 (tid=7361, running) created by main thread at:
6:     #0 pthread_create <null> (broker+0x42e5a2)
6:     #1 main /home/jdanek/repos/qpid/qpid-proton/c/examples/broker.c:471:5 (broker+0x4cb3af)
6: 
6: SUMMARY: ThreadSanitizer: data race (/home/jdanek/repos/qpid/qpid-proton/cmake-build-debug-gcc/c/examples/broker+0x447563) in close
6: ==================
6: ________________________________ stderr(7358) ________________________________
6: 
6: 
6: ----------------------------------------------------------------------
6: Ran 1 test in 4.261s
6: 
6: FAILED (errors=1)
 6/24 Test  #6: c-fdlimit-tests ..................***Failed    4.35 sec

I used clang 9.0.0 with tsan to compile. I am logging this because I intend to start writing suppression file, and I need a Jira number to reference.

Issue Links

• breaks: DISPATCH-2150 ThreadSanitizer: data race /home/runner/work/qpid-dispatch/qpid-dispatch/qpid-proton/c/src/proactor/epoll.c:2661 in check_earmark_override
• causes: DISPATCH-2150 ThreadSanitizer: data race /home/runner/work/qpid-dispatch/qpid-dispatch/qpid-proton/c/src/proactor/epoll.c:2661 in check_earmark_override
• incorporates: PROTON-2134 Create suppression files for sanitizers and add tsan and asan to Travis CI
• links to: GitHub Pull Request #204