Details
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Bug
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Resolution: Fixed
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Major
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3.1.4
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Untriaged
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Unknown
Description
As reported by TSan, race when generating task stats.
This appears benign, as it is only used for generating the %s:runtime stat for a worker.
WARNING: ThreadSanitizer: data race (pid=41666)
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Read of size 8 at 0x7d4400008378 by main thread (mutexes: write M21616):
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#0 ExecutorThread::getTaskStart() const /home/daver/repos/couchbase/server/ep-engine/src/executorthread.h:102 (ep.so+0x0000001cab9e)
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#1 addWorkerStats(char const*, ExecutorThread*, void const*, void (*)(char const*, unsigned short, char const*, unsigned int, void const*)) /home/daver/repos/couchbase/server/ep-engine/src/executorpool.cc:689 (ep.so+0x0000001b6d6e)
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#2 ExecutorPool::doWorkerStat(EventuallyPersistentEngine*, void const*, void (*)(char const*, unsigned short, char const*, unsigned int, void const*)) /home/daver/repos/couchbase/server/ep-engine/src/executorpool.cc:706 (ep.so+0x0000001b6734)
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#3 EventuallyPersistentEngine::doDispatcherStats(void const*, void (*)(char const*, unsigned short, char const*, unsigned int, void const*)) /home/daver/repos/couchbase/server/ep-engine/src/ep_engine.cc:4139 (ep.so+0x00000015223e)
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#4 EventuallyPersistentEngine::getStats(void const*, char const*, int, void (*)(char const*, unsigned short, char const*, unsigned int, void const*)) /home/daver/repos/couchbase/server/ep-engine/src/ep_engine.cc:4375 (ep.so+0x000000155336)
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Previous write of size 8 at 0x7d4400008378 by thread T6:
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#0 ExecutorThread::run() /home/daver/repos/couchbase/server/ep-engine/src/executorthread.cc:99 (ep.so+0x0000001e889c)
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#1 launch_executor_thread(void*) /home/daver/repos/couchbase/server/ep-engine/src/executorthread.cc:34 (ep.so+0x0000001e807a)
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#2 platform_thread_wrap /home/daver/repos/couchbase/server/platform/src/cb_pthreads.c:19 (libplatform.so.0.1.0+0x0000000035dc)
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Note: already fixed in watson: http://review.couchbase.org/57593
Attachments
Issue Links
- blocks
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MB-19323 3.1.6 release
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- Closed
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