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Posted to dev@qpid.apache.org by "Ken Giusti (Jira)" <ji...@apache.org> on 2022/01/25 18:29:00 UTC
[jira] [Updated] (DISPATCH-2123) qd_entity_refresh_allocator race in alloc_pool.c
[ https://issues.apache.org/jira/browse/DISPATCH-2123?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Ken Giusti updated DISPATCH-2123:
---------------------------------
Labels: race-condition tsan (was: )
> qd_entity_refresh_allocator race in alloc_pool.c
> ------------------------------------------------
>
> Key: DISPATCH-2123
> URL: https://issues.apache.org/jira/browse/DISPATCH-2123
> Project: Qpid Dispatch
> Issue Type: Bug
> Components: Router Node
> Affects Versions: 1.16.0
> Reporter: Ken Giusti
> Assignee: Ken Giusti
> Priority: Major
> Labels: race-condition, tsan
> Fix For: 1.19.0
>
>
> qd_entity_refresh_allocator walks all the descriptors reading their contents. This can happen while the descriptors are being written to during normal pool operations.
>
> Example:
>
> 5: WARNING: ThreadSanitizer: data race (pid=566878)
> 65: Read of size 8 at 0x7b0c00000d10 by main thread (mutexes: write M13, write M286, write M9):
> 65: #0 qd_entity_refresh_allocator /home/kgiusti/work/dispatch/qpid-dispatch/src/alloc_pool.c:700 (libqpid-dispatch.so+0x6cdec)
> 65: #1 ffi_call_unix64 <null> (libffi.so.6+0x6aef)
> 65: #2 qdr_forward_on_message /home/kgiusti/work/dispatch/qpid-dispatch/src/router_core/forwarder.c:336 (libqpid-dispatch.so+0xe4ff5)
> 65: #3 qdr_general_handler /home/kgiusti/work/dispatch/qpid-dispatch/src/router_core/router_core.c:929 (libqpid-dispatch.so+0xf83f6)
> 65: #4 qd_timer_visit /home/kgiusti/work/dispatch/qpid-dispatch/src/timer.c:317 (libqpid-dispatch.so+0x135b52)
> 65: #5 handle /home/kgiusti/work/dispatch/qpid-dispatch/src/server.c:1006 (libqpid-dispatch.so+0x12fc8d)
> 65: #6 thread_run /home/kgiusti/work/dispatch/qpid-dispatch/src/server.c:1121 (libqpid-dispatch.so+0x13063a)
> 65: #7 qd_server_run /home/kgiusti/work/dispatch/qpid-dispatch/src/server.c:1501 (libqpid-dispatch.so+0x1328de)
> 65: #8 main_process /home/kgiusti/work/dispatch/qpid-dispatch/router/src/main.c:115 (qdrouterd+0x40271a)
> 65: #9 main /home/kgiusti/work/dispatch/qpid-dispatch/router/src/main.c:369 (qdrouterd+0x403557)
> 65:
> 65: Previous write of size 8 at 0x7b0c00000d10 by thread T1 (mutexes: write M305):
> 65: #0 qd_dealloc /home/kgiusti/work/dispatch/qpid-dispatch/src/alloc_pool.c:494 (libqpid-dispatch.so+0x6bacd)
> 65: #1 free_qdr_action_t /home/kgiusti/work/dispatch/qpid-dispatch/src/router_core/router_core_thread.c:33 (libqpid-dispatch.so+0xf9a35)
> 65: #2 router_core_thread /home/kgiusti/work/dispatch/qpid-dispatch/src/router_core/router_core_thread.c:240 (libqpid-dispatch.so+0xfb2ba)
> 65: #3 _thread_init /home/kgiusti/work/dispatch/qpid-dispatch/src/posix/threading.c:172 (libqpid-dispatch.so+0xad37a)
> 65: #4 <null> <null> (libtsan.so.0+0x2d33f)
>
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