Pthread mutex assertion error

linux pthreads mutex assert glibc
Dave Causey picture Dave Causey · Jul 9, 2009 · Viewed 37.6k times · Source

I'm encountering the following error at unpredictable times in a linux-based (arm) communications application:

pthread_mutex_lock.c:82: __pthread_mutex_lock: Assertion `mutex->__data.__owner == 0' failed.

Google turns up a lot of references to that error, but little information that seems relevant to my situation. I was wondering if anyone can give me some ideas about how to troubleshoot this error. Does anyone know of a common cause for this assertion?

Thanks in advance.

Answer

Dave Causey picture Dave Causey · Jul 13, 2009

Rock solid for 4 days straight. I'm declaring victory on this one. The answer is "stupid user error" (see comments above). A mutex should only be unlocked by the thread that locked it. Thanks for bearing with me.

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