Winbindd using 100% of CPU. Any solution?

[Richard Sharpe]

On Thu, Nov 21, 2013 at 12:09 AM, Andreas Schneider <asn at samba.org> wrote:
> On Tuesday 19 November 2013 16:55:43 Jeremy Allison wrote:
>> On Tue, Nov 19, 2013 at 04:50:16PM -0800, Richard Sharpe wrote:
>> > On Tue, Nov 19, 2013 at 3:35 PM, Jeremy Allison <jra at samba.org> wrote:
>> > > On Tue, Nov 19, 2013 at 03:31:55PM -0800, Richard Sharpe wrote:
>> > >> Hi folks,
>> > >>
>> > >> We are seeing the same problem as in
>> > >> http://samba.2283325.n4.nabble.com/Winbind-using-100-CPU-td4646572.html
>> > >>
>> > >> This is with Samba 3.6.12+ under FreeBSD.
>> > >>
>> > >> Does anyone have a solution?
>> > >
>> > > Ask Jim for his DLIST_ macro changes.
>> >
>> > There were some changes there already.
>> >
>> > Rather than panic, would it be reasonable to simply refuse to add the
>> > duplicate entry and log more info and dump the stack?
>>
>> Whatever you need to help track it down. But IMHO panic == dump the stack.
>
> Maybe also get a
>
> talloc_report_full(0, fopen("/tmp/talloc_report.log","w"))
>
> which often gives you a hint what's going on.

Well, it actually seems to be a different problem because my core-dump
patch did not hit, as far as I can see.

Here is the traceback:

(gdb) where

#0  0x00000000004bc8c7 in winbindd_reinit_after_fork
(myself=0x80334cdc0, logfilename=0x8033d7b80
"/var/log/samba/log.wb-XCHANGE")

    at winbindd/winbindd_dual.c:1244

#1  0x00000000004bce5a in fork_domain_child (child=0x80334cdc0) at
winbindd/winbindd_dual.c:1362

#2  0x00000000004b9273 in wb_child_request_trigger (req=0x803387d50,
private_data=0x0) at winbindd/winbindd_dual.c:145

#3  0x00000000005bd8c9 in tevent_queue_immediate_trigger
(ev=0x80331e110, im=0x803387b10, private_data=0x8033d7b50) at
../lib/tevent/tevent_queue.c:144

#4  0x00000000005bbcbf in tevent_common_loop_immediate
(ev=0x80331e110) at ../lib/tevent/tevent_immediate.c:139

#5  0x00000000005b8852 in run_events_poll (ev=0x80331e110, pollrtn=0,
pfds=0x0, num_pfds=0) at lib/events.c:197

#6  0x00000000005b90ab in s3_event_loop_once (ev=0x80331e110,
location=0xb51e84 "winbindd/winbindd.c:1456") at lib/events.c:331

#7  0x00000000005ba31f in _tevent_loop_once (ev=0x80331e110,
location=0xb51e84 "winbindd/winbindd.c:1456") at
../lib/tevent/tevent.c:494

#8  0x000000000048a585 in main (argc=3, argv=0x7fffffffecb0,
envp=0x7fffffffecd0) at winbindd/winbindd.c:1456


-- 
Regards,
Richard Sharpe
(何以解憂？唯有杜康。--曹操)