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https://issues.apache.org/jira/browse/PROTON-2436?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17472809#comment-17472809
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ASF subversion and git services commented on PROTON-2436:
---------------------------------------------------------
Commit 3701f04534cbfa457e1724e0177ca8df234de565 in qpid-proton's branch
refs/heads/main from Clifford Jansen
[ https://gitbox.apache.org/repos/asf?p=qpid-proton.git;h=3701f04 ]
PROTON-2436: epoll raw connection TSAN race fix
> TSAN race in epoll.c post_event with raw connection
> ---------------------------------------------------
>
> Key: PROTON-2436
> URL: https://issues.apache.org/jira/browse/PROTON-2436
> Project: Qpid Proton
> Issue Type: Bug
> Components: proton-c
> Affects Versions: proton-c-0.36.0
> Reporter: Ken Giusti
> Assignee: Clifford Jansen
> Priority: Major
>
> today's github CI run of dispatch+proton main kicked up a tsan error in
> proton I've never seen before:
> https://github.com/apache/qpid-dispatch/runs/3700836319?check_suite_focus=true#step:27:2142
>
> {noformat}
> 70: WARNING: ThreadSanitizer: data race (pid=3075)
> 70: Write of size 4 at 0x7b680000dd38 by main thread (mutexes: write M257):
> 70: #0 post_event
> /home/runner/work/qpid-dispatch/qpid-dispatch/qpid-proton/c/src/proactor/epoll.c:2304
> (libqpid-proton-proactor.so.1+0x14108)
> 70: #1 poller_do_epoll
> /home/runner/work/qpid-dispatch/qpid-dispatch/qpid-proton/c/src/proactor/epoll.c:2534
> (libqpid-proton-proactor.so.1+0x14108)
> 70: #2 next_event_batch
> /home/runner/work/qpid-dispatch/qpid-dispatch/qpid-proton/c/src/proactor/epoll.c:2438
> (libqpid-proton-proactor.so.1+0x14108)
> 70: #3 pn_proactor_wait
> /home/runner/work/qpid-dispatch/qpid-dispatch/qpid-proton/c/src/proactor/epoll.c:2650
> (libqpid-proton-proactor.so.1+0x14622)
> 70: #4 thread_run
> /home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/server.c:1118
> (qdrouterd+0x4d83a9)
> 70: #5 qd_server_run
> /home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/server.c:1527
> (qdrouterd+0x4d904c)
> 70: #6 main_process
> /home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/router/src/main.c:115
> (qdrouterd+0x426cdc)
> 70: #7 main
> /home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/router/src/main.c:369
> (qdrouterd+0x42623c)
> 70:
> 70: Previous read of size 4 at 0x7b680000dd38 by thread T3 (mutexes: write
> M499):
> 70: #0 pni_raw_connection_process
> /home/runner/work/qpid-dispatch/qpid-dispatch/qpid-proton/c/src/proactor/epoll_raw_connection.c:355
> (libqpid-proton-proactor.so.1+0x108ec)
> 70: #1 process
> /home/runner/work/qpid-dispatch/qpid-dispatch/qpid-proton/c/src/proactor/epoll.c:2230
> (libqpid-proton-proactor.so.1+0x108ec)
> 70: #2 next_event_batch
> /home/runner/work/qpid-dispatch/qpid-dispatch/qpid-proton/c/src/proactor/epoll.c:2419
> (libqpid-proton-proactor.so.1+0x108ec)
> 70: #3 pn_proactor_wait
> /home/runner/work/qpid-dispatch/qpid-dispatch/qpid-proton/c/src/proactor/epoll.c:2650
> (libqpid-proton-proactor.so.1+0x14622)
> 70: #4 thread_run
> /home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/server.c:1118
> (qdrouterd+0x4d83a9)
> 70: #5 _thread_init
> /home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/posix/threading.c:172
> (qdrouterd+0x47fe2d)
> 70:
> 70: Location is heap block of size 1536 at 0x7b680000d800 allocated by main
> thread:
> 70: #0 calloc <null> (libtsan.so.0+0x32b3e)
> 70: #1 pn_raw_connection
> /home/runner/work/qpid-dispatch/qpid-dispatch/qpid-proton/c/src/proactor/epoll_raw_connection.c:168
> (libqpid-proton-proactor.so.1+0xdf82)
> 70: #2 _do_reconnect
> /home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/adaptors/http1/http1_server.c:451
> (qdrouterd+0x43da47)
> 70: #3 qd_timer_visit
> /home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/timer.c:316
> (qdrouterd+0x4daddf)
> 70: #4 handle
> /home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/server.c:1018
> (qdrouterd+0x4d60d6)
> 70: #5 thread_run
> /home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/server.c:1133
> (qdrouterd+0x4d84e7)
> 70: #6 qd_server_run
> /home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/server.c:1527
> (qdrouterd+0x4d904c)
> 70: #7 main_process
> /home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/router/src/main.c:115
> (qdrouterd+0x426cdc)
> 70: #8 main
> /home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/router/src/main.c:369
> (qdrouterd+0x42623c)
> 70:
> 70: Mutex M257 (0x7b640003aa20) created at:
> 70: #0 pthread_mutex_init <null> (libtsan.so.0+0x49603)
> 70: #1 pmutex_init
> /home/runner/work/qpid-dispatch/qpid-dispatch/qpid-proton/c/src/proactor/epoll-internal.h:323
> (libqpid-proton-proactor.so.1+0xd52c)
> 70: #2 pn_proactor
> /home/runner/work/qpid-dispatch/qpid-dispatch/qpid-proton/c/src/proactor/epoll.c:1941
> (libqpid-proton-proactor.so.1+0xd52c)
> 70: #3 qd_server
> /home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/server.c:1380
> (qdrouterd+0x4d872f)
> 70: #4 qd_dispatch_prepare
> /home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/dispatch.c:334
> (qdrouterd+0x4604b6)
> 70: #5 ffi_call_unix64 <null> (libffi.so.6+0x6c03)
> 70: #6 main_process
> /home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/router/src/main.c:97
> (qdrouterd+0x426c7c)
> 70: #7 main
> /home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/router/src/main.c:369
> (qdrouterd+0x42623c)
> 70:
> 70: Mutex M499 (0x7b680000d800) created at:
> 70: #0 pthread_mutex_init <null> (libtsan.so.0+0x49603)
> 70: #1 pmutex_init
> /home/runner/work/qpid-dispatch/qpid-dispatch/qpid-proton/c/src/proactor/epoll-internal.h:323
> (libqpid-proton-proactor.so.1+0x146eb)
> 70: #2 task_init
> /home/runner/work/qpid-dispatch/qpid-dispatch/qpid-proton/c/src/proactor/epoll.c:224
> (libqpid-proton-proactor.so.1+0x146eb)
> 70: #3 praw_connection_init
> /home/runner/work/qpid-dispatch/qpid-dispatch/qpid-proton/c/src/proactor/epoll_raw_connection.c:141
> (libqpid-proton-proactor.so.1+0x146eb)
> 70: #4 pn_proactor_raw_connect
> /home/runner/work/qpid-dispatch/qpid-dispatch/qpid-proton/c/src/proactor/epoll_raw_connection.c:179
> (libqpid-proton-proactor.so.1+0x146eb)
> 70: #5 _do_reconnect
> /home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/adaptors/http1/http1_server.c:455
> (qdrouterd+0x43daa2)
> 70: #6 qd_timer_visit
> /home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/timer.c:316
> (qdrouterd+0x4daddf)
> 70: #7 handle
> /home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/server.c:1018
> (qdrouterd+0x4d60d6)
> 70: #8 thread_run
> /home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/server.c:1133
> (qdrouterd+0x4d84e7)
> 70: #9 qd_server_run
> /home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/server.c:1527
> (qdrouterd+0x4d904c)
> 70: #10 main_process
> /home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/router/src/main.c:115
> (qdrouterd+0x426cdc)
> 70: #11 main
> /home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/router/src/main.c:369
> (qdrouterd+0x42623c)
> 70:
> 70: Thread T3 (tid=3079, running) created by main thread at:
> 70: #0 pthread_create <null> (libtsan.so.0+0x5bf45)
> 70: #1 sys_thread
> /home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/posix/threading.c:181
> (qdrouterd+0x4802bc)
> 70: #2 qd_server_run
> /home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/server.c:1525
> (qdrouterd+0x4d902c)
> 70: #3 main_process
> /home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/router/src/main.c:115
> (qdrouterd+0x426cdc)
> 70: #4 main
> /home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/router/src/main.c:369
> (qdrouterd+0x42623c)
> 70:
> 70: SUMMARY: ThreadSanitizer: data race
> /home/runner/work/qpid-dispatch/qpid-dispatch/qpid-proton/c/src/proactor/epoll.c:2304
> in post_event
> 70: ==================
> 70: ThreadSanitizer: reported 1 warnings
> {noformat}
>
>
> Proton main latest (commit 30b245a48d7461fd41854e5bb63eadf19cbb26bd)
>
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