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https://issues.apache.org/jira/browse/DISPATCH-2126?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17483437#comment-17483437
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ASF GitHub Bot commented on DISPATCH-2126:
------------------------------------------
asfgit merged pull request #1500:
URL: https://github.com/apache/qpid-dispatch/pull/1500
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> qdr_delivery_t->settled flag race
> ---------------------------------
>
> Key: DISPATCH-2126
> URL: https://issues.apache.org/jira/browse/DISPATCH-2126
> 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
>
>
> I/O thread reads the qdr_delivery_t->settled flag while calling the
> delivery_update_handler, while core thread is updating it while processing
> multicast.
> {noformat}
> 5: WARNING: ThreadSanitizer: data race (pid=568299)
> 65: Read of size 1 at 0x7b500008131c by thread T4:
> 65: #0 qdr_connection_process
> /home/kgiusti/work/dispatch/qpid-dispatch/src/router_core/connections.c:403
> (libqpid-dispatch.so+0xc4a30)
> 65: #1 AMQP_writable_conn_handler
> /home/kgiusti/work/dispatch/qpid-dispatch/src/router_node.c:299
> (libqpid-dispatch.so+0x122d42)
> 65: #2 writable_handler
> /home/kgiusti/work/dispatch/qpid-dispatch/src/container.c:395
> (libqpid-dispatch.so+0x7b2e2)
> 65: #3 qd_container_handle_event
> /home/kgiusti/work/dispatch/qpid-dispatch/src/container.c:747
> (libqpid-dispatch.so+0x7cfd5)
> 65: #4 handle /home/kgiusti/work/dispatch/qpid-dispatch/src/server.c:1096
> (libqpid-dispatch.so+0x130537)
> 65: #5 thread_run /home/kgiusti/work/dispatch/qpid-dispatch/src/server.c:1121
> (libqpid-dispatch.so+0x13063a)
> 65: #6 _thread_init
> /home/kgiusti/work/dispatch/qpid-dispatch/src/posix/threading.c:172
> (libqpid-dispatch.so+0xad37a)
> 65: #7 <null> <null> (libtsan.so.0+0x2d33f)
> 65:
> 65: Previous write of size 1 at 0x7b500008131c by thread T1:
> 65: #0 qdr_delivery_mcast_inbound_update_CT
> /home/kgiusti/work/dispatch/qpid-dispatch/src/router_core/delivery.c:853
> (libqpid-dispatch.so+0xd\
> 97bb)
> 65: #1 qdr_update_delivery_CT
> /home/kgiusti/work/dispatch/qpid-dispatch/src/router_core/delivery.c:671
> (libqpid-dispatch.so+0xd8f22)
> 65: #2 router_core_thread
> /home/kgiusti/work/dispatch/qpid-dispatch/src/router_core/router_core_thread.c:239
> (libqpid-dispatch.so+0xfb2ae)
> 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)
> 65:
> 65: Location is heap block of size 512 at 0x7b5000081200 allocated by thread
> T2:
> 65: #0 posix_memalign <null> (libtsan.so.0+0x3061d)
> 65: #1 qd_alloc
> /home/kgiusti/work/dispatch/qpid-dispatch/src/alloc_pool.c:396
> (libqpid-dispatch.so+0x6ab9c)
> 65: #2 new_qdr_delivery_t
> /home/kgiusti/work/dispatch/qpid-dispatch/src/router_core/delivery.c:24
> (libqpid-dispatch.so+0xd5ddd)
> 65: #3 qdr_link_deliver
> /home/kgiusti/work/dispatch/qpid-dispatch/src/router_core/transfer.c:47
> (libqpid-dispatch.so+0x1038d9)
> 65: #4 AMQP_rx_handler
> /home/kgiusti/work/dispatch/qpid-dispatch/src/router_node.c:868
> (libqpid-dispatch.so+0x124406)
> 65: #5 do_receive
> /home/kgiusti/work/dispatch/qpid-dispatch/src/container.c:227
> (libqpid-dispatch.so+0x7a99b)
> 65: #6 qd_container_handle_event
> /home/kgiusti/work/dispatch/qpid-dispatch/src/container.c:737
> (libqpid-dispatch.so+0x7cf4f)
> 65: #7 handle /home/kgiusti/work/dispatch/qpid-dispatch/src/server.c:1096
> (libqpid-dispatch.so+0x130537)
> 65: #8 thread_run /home/kgiusti/work/dispatch/qpid-dispatch/src/server.c:1121
> (libqpid-dispatch.so+0x13063a)
> 65: #9 _thread_init
> /home/kgiusti/work/dispatch/qpid-dispatch/src/posix/threading.c:172
> (libqpid-dispatch.so+0xad37a)
> 65: #10 <null> <null> (libtsan.so.0+0x2d33f)
> {noformat}
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