Ken Giusti created DISPATCH-1956:
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Summary: Potential deadlock: logging lock vs entity cache lock
Key: DISPATCH-1956
URL: https://issues.apache.org/jira/browse/DISPATCH-1956
Project: Qpid Dispatch
Issue Type: Bug
Components: Router Node
Affects Versions: 1.15.0
Reporter: Ken Giusti
Fix For: 1.16.0
WARNING: ThreadSanitizer: lock-order-inversion (potential deadlock)
(pid=1474955)
Cycle in lock order graph: M11 (0x7b10000002c0) => M9 (0x7b1000000240) => M11
Mutex M9 acquired here while holding mutex M11 in main thread:
#0 pthread_mutex_lock <null> (libtsan.so.0+0x528ac)
#1 sys_mutex_lock
/home/kgiusti/work/dispatch/qpid-dispatch/src/posix/threading.c:57
(libqpid-dispatch.so+0x8cb7d)
#2 push_event /home/kgiusti/work/dispatch/qpid-dispatch/src/entity_cache.c:63
(libqpid-dispatch.so+0x6fa13)
#3 qd_entity_cache_add
/home/kgiusti/work/dispatch/qpid-dispatch/src/entity_cache.c:69
(libqpid-dispatch.so+0x6fc26)
#4 qd_alloc_init
/home/kgiusti/work/dispatch/qpid-dispatch/src/alloc_pool.c:302
(libqpid-dispatch.so+0x5878b)
#5 qd_alloc /home/kgiusti/work/dispatch/qpid-dispatch/src/alloc_pool.c:318
(libqpid-dispatch.so+0x5878b)
#6 new_qd_log_entry_t /home/kgiusti/work/dispatch/qpid-dispatch/src/log.c:61
(libqpid-dispatch.so+0x75891)
#7 qd_vlog_impl /home/kgiusti/work/dispatch/qpid-dispatch/src/log.c:426
(libqpid-dispatch.so+0x76205)
#8 qd_log_impl /home/kgiusti/work/dispatch/qpid-dispatch/src/log.c:453
(libqpid-dispatch.so+0x76580)
#9 qd_python_log
/home/kgiusti/work/dispatch/qpid-dispatch/src/python_embedded.c:547
(libqpid-dispatch.so+0x8d1cb)
#10 <null> <null> (libpython3.8.so.1.0+0x12a23b)
#11 main_process
/home/kgiusti/work/dispatch/qpid-dispatch/router/src/main.c:95
(qdrouterd+0x40281c)
#12 main /home/kgiusti/work/dispatch/qpid-dispatch/router/src/main.c:367
(qdrouterd+0x4024fc)
Hint: use TSAN_OPTIONS=second_deadlock_stack=1 to get more informative warning
message
Mutex M11 acquired here while holding mutex M9 in main thread:
#0 pthread_mutex_lock <null> (libtsan.so.0+0x528ac)
#1 sys_mutex_lock
/home/kgiusti/work/dispatch/qpid-dispatch/src/posix/threading.c:57
(libqpid-dispatch.so+0x8cb7d)
#2 qd_vlog_impl /home/kgiusti/work/dispatch/qpid-dispatch/src/log.c:425
(libqpid-dispatch.so+0x76200)
#3 qd_log_impl /home/kgiusti/work/dispatch/qpid-dispatch/src/log.c:453
(libqpid-dispatch.so+0x76580)
#4 qd_python_log
/home/kgiusti/work/dispatch/qpid-dispatch/src/python_embedded.c:547
(libqpid-dispatch.so+0x8d1cb)
#5 <null> <null> (libpython3.8.so.1.0+0x12a23b)
#6 main_process /home/kgiusti/work/dispatch/qpid-dispatch/router/src/main.c:95
(qdrouterd+0x40281c)
#7 main /home/kgiusti/work/dispatch/qpid-dispatch/router/src/main.c:367
(qdrouterd+0x4024fc)
SUMMARY: ThreadSanitizer: lock-order-inversion (potential deadlock)
(/lib64/libtsan.so.0+0x528ac) in __interceptor_pthread_mutex_lock
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