Re: deadlkres: possible deadlock detected for 0xe000000012aed200, blocked for 900014 ticks

From: John Baldwin <jhb_at_freebsd.org>
Date: Wed, 23 Oct 2013 14:56:56 -0400
On Wednesday, October 23, 2013 1:56:01 pm Anton Shterenlikht wrote:
> >From jhb_at_freebsd.org Wed Oct 23 16:54:12 2013
> >
> >On Wednesday, October 23, 2013 5:27:10 am Anton Shterenlikht wrote:
> >> This time alllocks has lots of info.
> >> 
> >> I updated the PR:
> >> http://www.freebsd.org/cgi/query-pr.cgi?pr=kern/183007
> >
> >Hmm, unfortunately it seems like all the stack traces did not work.  There 
are 
> >lots of threads blocked on VM-related locks, and CPU 0 is running 
vm_daemon.
> >Probably would need a stack trace of that thread to see what it is doing 
(this
> >is part of why a real crash dump would be far better than a textdump as you 
> >can get more info after the crash instead of having to know in advance 
> >everything you want).  I saw earlier you had a thread to get textdumps to 
> >work.  Did you ever have regular crashdumps working?
> 
> No. I have another deadlock panic when savecore
> is running. That panic dumps core, then on reboot
> when savecore is running I get another deadlock
> panic, and so on. However, I do get about 8-10gb vmcore*
> files before the panic happens. Presumably these
> are truncated somehow.
> Do you think these incomplete vmcores can still
> be useful? If you send some instructions on what
> to try, I'll give it a go, or I can post a vmcore
> somewhere.

Does you get corresponding core.txt.N files from crashinfo?

-- 
John Baldwin
Received on Wed Oct 23 2013 - 16:57:11 UTC

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