Hi Rick, On Mon, 12 Oct 2015, Rick Macklem wrote:
Christian Kratzer wrote:Hi Rick, there was also a second more recent crash in /var/crash Mon Oct 12 03:01:16 CEST 2015 FreeBSD noc3.cksoft.de 10.2-STABLE FreeBSD 10.2-STABLE #2 r288980M: Sun Oct 11 08:37:40 CEST 2015 c...@noc3.cksoft.de:/usr/obj/usr/src/sys/NOC amd64 panic: Assertion mtx_unowned(m) failed at /usr/src/sys/kern/kern_mutex.c:955Oops, I screwed up. I should have looked at this panic assertion when you reported it before. Ok, so if I understand the assertion correctly, it means that another thread has the mutex locked. If this is correct, I'll have to take another look at the code and figure out how to wait for these other threads to finish with the mutexes. I do think the patch fixes the race I saw, but there must be other races in the code. I'll take another look, but if anyone else is conversant with netsmb, feel free to jump in, because it is all new to me. Unfortunately, I won't have any way to do testing for the next month or so, so any patches I do come up with will be "try this untested..".
thats no problem. Just keep the patches coming when you have time and tell me when to reset back to stable, current or whatever so we don't lose sync of the status. As it looks like that the race happens on unmount I could try putting a sleep 60 into the script that does the "mount && rsycn && umount" magic just before the umount. That would allow anything that it slow to go away to perhaps release the mutexes before the umount. Not a real fix of course but might help to verify what's going on. Greetings Christian -- Christian Kratzer CK Software GmbH Email: c...@cksoft.de Wildberger Weg 24/2 Phone: +49 7032 893 997 - 0 D-71126 Gaeufelden Fax: +49 7032 893 997 - 9 HRB 245288, Amtsgericht Stuttgart Mobile: +49 171 1947 843 Geschaeftsfuehrer: Christian Kratzer Web: http://www.cksoft.de/ _______________________________________________ freebsd-stable@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"
