On Thu, 20 Feb 2020 at 04:28, <wanghanlin@xxxxxxxxxxxxxxxx> wrote: > > Dear All, > Recently on my X86 server one problem hit. > ../nptl/pthread_mutex_lock.c:81: __pthread_mutex_lock: Assertion `mutex->__data.__owner == 0' failed. > The test program of appendix [1] is very simple. > Strangely, there are hundreds of identical servers, but only two have this problem. It doesn't look like a GCC problem though.