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https://issues.apache.org/jira/browse/DISPATCH-2126?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17347830#comment-17347830
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Ken Giusti commented on DISPATCH-2126:
--------------------------------------
Same race when propagating anycast messages:
27: test_90_block_link_route_EB1_INTB
(system_tests_policy_oversize_compound.MaxMessageSizeLinkRouteOversize) ... ok
27: WARNING: ThreadSanitizer: data race (pid=14467)
27: Read of size 1 at 0x7b4400014314 by thread T2 (mutexes: write M691):
27: #0 qdr_link_process_deliveries
/home/travis/build/apache/qpid-dispatch/src/router_core/transfer.c:166
(libqpid-dispatch.so+0xd0b7a)
27: #1 CORE_link_push
/home/travis/build/apache/qpid-dispatch/src/router_node.c:1920
(libqpid-dispatch.so+0xe47b7)
27: #2 qdr_connection_process
/home/travis/build/apache/qpid-dispatch/src/router_core/connections.c:414
(libqpid-dispatch.so+0xa80e2)
27: #3 AMQP_writable_conn_handler
/home/travis/build/apache/qpid-dispatch/src/router_node.c:299
(libqpid-dispatch.so+0xe3e01)
27: #4 writable_handler
/home/travis/build/apache/qpid-dispatch/src/container.c:395
(libqpid-dispatch.so+0x76264)
27: #5 qd_container_handle_event
/home/travis/build/apache/qpid-dispatch/src/container.c:747
(libqpid-dispatch.so+0x76264)
27: #6 handle /home/travis/build/apache/qpid-dispatch/src/server.c:1096
(libqpid-dispatch.so+0xed0b1)
27: #7 thread_run /home/travis/build/apache/qpid-dispatch/src/server.c:1121
(libqpid-dispatch.so+0xf0a5c)
27: #8 _thread_init
/home/travis/build/apache/qpid-dispatch/src/posix/threading.c:172
(libqpid-dispatch.so+0x96f16)
27: #9 <null> <null> (libtsan.so.0+0x2d1af)
27: Previous write of size 1 at 0x7b4400014314 by thread T1:
27: #0 qdr_delivery_anycast_update_CT
/home/travis/build/apache/qpid-dispatch/src/router_core/delivery.c:733
(libqpid-dispatch.so+0xb6244)
27: #1 qdr_update_delivery_CT
/home/travis/build/apache/qpid-dispatch/src/router_core/delivery.c:688
(libqpid-dispatch.so+0xb6244)
27: #2 router_core_thread
/home/travis/build/apache/qpid-dispatch/src/router_core/router_core_thread.c:239
(libqpid-dispatch.so+0xca645)
27: #3 _thread_init
/home/travis/build/apache/qpid-dispatch/src/posix/threading.c:172
(libqpid-dispatch.so+0x96f16)
27: #4 <null> <null> (libtsan.so.0+0x2d1af)
27: Location is heap block of size 320 at 0x7b4400014280 allocated by thread T2:
27: #0 posix_memalign <null> (libtsan.so.0+0x3048d)
27: #1 qd_alloc /home/travis/build/apache/qpid-dispatch/src/alloc_pool.c:396
(libqpid-dispatch.so+0x614c4)
27: #2 new_qdr_delivery_t
/home/travis/build/apache/qpid-dispatch/src/router_core/delivery.c:24
(libqpid-dispatch.so+0xb25e5)
27: #3 qdr_link_deliver_to
/home/travis/build/apache/qpid-dispatch/src/router_core/transfer.c:82
(libqpid-dispatch.so+0xd046d)
27: #4 AMQP_rx_handler
/home/travis/build/apache/qpid-dispatch/src/router_node.c:818
(libqpid-dispatch.so+0xe62df)
27: #5 do_receive /home/travis/build/apache/qpid-dispatch/src/container.c:227
(libqpid-dispatch.so+0x76574)
27: #6 qd_container_handle_event
/home/travis/build/apache/qpid-dispatch/src/container.c:737
(libqpid-dispatch.so+0x76574)
27: #7 handle /home/travis/build/apache/qpid-dispatch/src/server.c:1096
(libqpid-dispatch.so+0xed0b1)
27: #8 thread_run /home/travis/build/apache/qpid-dispatch/src/server.c:1121
(libqpid-dispatch.so+0xf0a5c)
27: #9 _thread_init
/home/travis/build/apache/qpid-dispatch/src/posix/threading.c:172
(libqpid-dispatch.so+0x96f16)
27: #10 <null> <null> (libtsan.so.0+0x2d1af)
> 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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