Winbind using 100% CPU

[Andreas Schneider]

On Thursday 11 April 2013 09:58:33 Dylan Klomparens wrote:
> (Re-posting on this email list per Jeremy Allison's request.)
> 
> I am trying to figure out why winbind is using 100% CPU on my file server.
> I am using Samba version 4.0.4. Everything is fine for a few minutes when I
> start winbind, however after a while it begins using 100% CPU. I haven't
> been able to narrow down what triggers this CPU usage spike, but I did
> attach the GNU debugger to find out what's going on in the process. The
> backtrace revealed this information:
> 
> #0  0x000000000041cf30 in _talloc_free at plt ()
> #1  0x0000000000452320 in winbindd_reinit_after_fork ()
> #2  0x00000000004524e6 in fork_domain_child ()
> #3  0x0000000000453585 in wb_child_request_trigger ()
> #4  0x000000381d2048e2 in tevent_common_loop_immediate () from
> /lib64/libtevent.so.0
> #5  0x00007fbed6b98e17 in run_events_poll () from /lib64/libsmbconf.so.0
> #6  0x00007fbed6b9922e in s3_event_loop_once () from /lib64/libsmbconf.so.0
> #7  0x000000381d204060 in _tevent_loop_once () from /lib64/libtevent.so.0
> #8  0x000000000042049a in main ()

If you get to this backtrace again, please call

bt full

and also do:

p talloc_report_full(NULL, fopen("/tmp/talloc_report.log","w"))

attach the log.


Jim, does this look familiar? :)


	-- andreas


-- 
Andreas Schneider                   GPG-ID: F33E3FC6
Samba Team                             asn at samba.org
www.samba.org