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Posted to dev@qpid.apache.org by "Ken Giusti (Jira)" <ji...@apache.org> on 2021/05/18 15:41:00 UTC
[jira] [Updated] (DISPATCH-2128) delivery_tracker core process
walks link->undelivered unlocked
[ https://issues.apache.org/jira/browse/DISPATCH-2128?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Ken Giusti updated DISPATCH-2128:
---------------------------------
Labels: race-condition tsan (was: )
> delivery_tracker core process walks link->undelivered unlocked
> --------------------------------------------------------------
>
> Key: DISPATCH-2128
> URL: https://issues.apache.org/jira/browse/DISPATCH-2128
> 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: 1.17.0
>
>
> While core thread walks the qdr_link_t->undelivered list, the I/O thread can modify it:
>
> 5: WARNING: ThreadSanitizer: data race (pid=569945)
> 65: Write of size 8 at 0x7b5800066158 by thread T3 (mutexes: write M380):
> 65: #0 qdr_link_process_deliveries /home/kgiusti/work/dispatch/qpid-dispatch/src/router_core/transfer.c:212 (libqpid-dispatch.so+0x104875)
> 65: #1 CORE_link_push /home/kgiusti/work/dispatch/qpid-dispatch/src/router_node.c:1920 (libqpid-dispatch.so+0x127d00)
> 65: #2 qdr_connection_process /home/kgiusti/work/dispatch/qpid-dispatch/src/router_core/connections.c:414 (libqpid-dispatch.so+0xc4bec)
> 65: #3 AMQP_writable_conn_handler /home/kgiusti/work/dispatch/qpid-dispatch/src/router_node.c:299 (libqpid-dispatch.so+0x122d42)
> 65: #4 writable_handler /home/kgiusti/work/dispatch/qpid-dispatch/src/container.c:395 (libqpid-dispatch.so+0x7b2e2)
> 65: #5 qd_container_handle_event /home/kgiusti/work/dispatch/qpid-dispatch/src/container.c:747 (libqpid-dispatch.so+0x7cfd5)
> 65: #6 handle /home/kgiusti/work/dispatch/qpid-dispatch/src/server.c:1096 (libqpid-dispatch.so+0x130537)
> 65: #7 thread_run /home/kgiusti/work/dispatch/qpid-dispatch/src/server.c:1121 (libqpid-dispatch.so+0x13063a)
> 65: #8 _thread_init /home/kgiusti/work/dispatch/qpid-dispatch/src/posix/threading.c:172 (libqpid-dispatch.so+0xad37a)
> 65: #9 <null> <null> (libtsan.so.0+0x2d33f)
> 65:
> 65: Previous read of size 8 at 0x7b5800066158 by thread T1:
> 65: #0 process_link_CT /home/kgiusti/work/dispatch/qpid-dispatch/src/router_core/modules/stuck_delivery_detection/delivery_tracker.c:64 (libq\
> pid-dispatch.so+0x11b745)
> 65: #1 action_handler_CT /home/kgiusti/work/dispatch/qpid-dispatch/src/router_core/modules/stuck_delivery_detection/delivery_tracker.c:115 (l\
> ibqpid-dispatch.so+0x11bbe8)
> 65: #2 router_core_process_background_action_LH /home/kgiusti/work/dispatch/qpid-dispatch/src/router_core/router_core_thread.c:192 (libqpid-d\
> ispatch.so+0xfadfd)
> 65: #3 router_core_thread /home/kgiusti/work/dispatch/qpid-dispatch/src/router_core/router_core_thread.c:220 (libqpid-dispatch.so+0xfaf4b)
> 65: #4 _thread_init /home/kgiusti/work/dispatch/qpid-dispatch/src/posix/threading.c:172 (libqpid-dispatch.so+0xad37a)
> 65: #5 <null> <null> (libtsan.so.0+0x2d33f)
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