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https://issues.apache.org/jira/browse/DISPATCH-2126?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17392055#comment-17392055
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Jiri Daněk commented on DISPATCH-2126:
--------------------------------------
This one looks to be another variation on the same theme
https://github.com/jiridanek/qpid-dispatch/runs/3228060384?check_suite_focus=true#step:27:1726
{noformat}
63: E WARNING: ThreadSanitizer: data race (pid=3997)
63: E Read of size 1 at 0x7b4400019454 by main thread:
63: E #0 qdr_connection_process
/home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/router_core/connections.c:403
(qdrouterd+0x491827)
63: E #1 AMQP_writable_conn_handler
/home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/router_node.c:299
(qdrouterd+0x4cdadd)
63: E #2 writable_handler
/home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/container.c:396
(qdrouterd+0x45eea4)
63: E #3 qd_container_handle_event
/home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/container.c:748
(qdrouterd+0x45eea4)
63: E #4 handle
/home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/server.c:1108
(qdrouterd+0x4d68c1)
63: E #5 thread_run
/home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/server.c:1133
(qdrouterd+0x4d8bf4)
63: E #6 qd_server_run
/home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/server.c:1527
(qdrouterd+0x4d97dc)
63: E #7 main_process
/home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/router/src/main.c:115
(qdrouterd+0x426ccc)
63: E #8 main
/home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/router/src/main.c:369
(qdrouterd+0x42622c)
63: E
63: E Previous write of size 1 at 0x7b4400019454 by thread T1:
63: E #0 qdr_delivery_mcast_outbound_settled_CT
/home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/router_core/delivery.c:889
(qdrouterd+0x49f4d7)
63: E #1 qdr_delivery_mcast_outbound_update_CT
/home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/router_core/delivery.c:1020
(qdrouterd+0x49f4d7)
63: E #2 qdr_update_delivery_CT
/home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/router_core/delivery.c:680
(qdrouterd+0x4a0105)
63: E #3 router_core_thread
/home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/router_core/router_core_thread.c:239
(qdrouterd+0x4b4427)
63: E #4 _thread_init
/home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/posix/threading.c:172
(qdrouterd+0x4806fd)
63: E
63: E Location is heap block of size 320 at 0x7b44000193c0
allocated by thread T2:
63: E #0 posix_memalign <null> (libtsan.so.0+0x32a23)
63: E #1 qd_alloc
/home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/alloc_pool.c:396
(qdrouterd+0x44a3d9)
63: E #2 new_qdr_delivery_t
/home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/router_core/delivery.c:24
(qdrouterd+0x49c07c)
63: E #3 qdr_link_deliver_to_routed_link
/home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/router_core/transfer.c:117
(qdrouterd+0x4ba3c5)
63: E #4 AMQP_rx_handler
/home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/router_node.c:636
(qdrouterd+0x4d0cbc)
63: E #5 do_receive
/home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/container.c:227
(qdrouterd+0x45f1a4)
63: E #6 qd_container_handle_event
/home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/container.c:738
(qdrouterd+0x45f1a4)
63: E #7 handle
/home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/server.c:1108
(qdrouterd+0x4d68c1)
63: E #8 thread_run
/home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/server.c:1133
(qdrouterd+0x4d8bf4)
63: E #9 _thread_init
/home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/posix/threading.c:172
(qdrouterd+0x4806fd)
63: E
63: E Thread T1 (tid=3999, running) created by main thread at:
63: E #0 pthread_create <null> (libtsan.so.0+0x5bf45)
63: E #1 sys_thread
/home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/posix/threading.c:181
(qdrouterd+0x480b8c)
63: E #2 qdr_core
/home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/router_core/router_core.c:124
(qdrouterd+0x4ae310)
63: E #3 qd_router_setup_late
/home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/router_node.c:2120
(qdrouterd+0x4d1c68)
63: E #4 ffi_call_unix64 <null> (libffi.so.6+0x6c03)
63: E #5 main_process
/home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/router/src/main.c:97
(qdrouterd+0x426c6c)
63: E #6 main
/home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/router/src/main.c:369
(qdrouterd+0x42622c)
63: E
63: E Thread T2 (tid=4000, running) created by main thread at:
63: E #0 pthread_create <null> (libtsan.so.0+0x5bf45)
63: E #1 sys_thread
/home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/posix/threading.c:181
(qdrouterd+0x480b8c)
63: E #2 qd_server_run
/home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/server.c:1525
(qdrouterd+0x4d97bc)
63: E #3 main_process
/home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/router/src/main.c:115
(qdrouterd+0x426ccc)
63: E #4 main
/home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/router/src/main.c:369
(qdrouterd+0x42622c)
63: E
63: E SUMMARY: ThreadSanitizer: data race
/home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/router_core/connections.c:403
in qdr_connection_process
{noformat}
> 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: 1.17.0
>
>
> 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.
>
> 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)
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