Re: Panic on head (r255759) [_callout_stop_safe()-> panic: Lock lle not exclusively locked @ /usr/src/sys/kern/kern_rwlock.c:140]

On Sat, Sep 21, 2013 at 2:51 PM, O. Hartmann
<ohartman_at_zedat.fu-berlin.de> wrote:
> On Sat, 21 Sep 2013 07:08:25 -0500
> Bryan Drewery <bdrewery_at_FreeBSD.org> wrote:
>
>> On 9/21/2013 7:06 AM, Bjoern A. Zeeb wrote:
>> > On Sat, 21 Sep 2013, Bryan Drewery wrote:
>> >
>> >>> Unread portion of the kernel message buffer:
>> >>> panic: Lock lle not exclusively locked _at_
>> >>> /usr/src/sys/kern/kern_rwlock.c:140
>> >>>
>> >>> cpuid = 0
>> >>> KDB: stack backtrace:
>> >>> db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame
>> >>> 0xfffffe118aeef820
>> >>> kdb_backtrace() at kdb_backtrace+0x39/frame 0xfffffe118aeef8d0
>> >>> vpanic() at vpanic+0x126/frame 0xfffffe118aeef910
>> >>> panic() at panic+0x43/frame 0xfffffe118aeef970
>> >>> __rw_assert() at __rw_assert+0xa3/frame 0xfffffe118aeef980
>> >>> _callout_stop_safe() at _callout_stop_safe+0x54/frame
>> >>> 0xfffffe118aeef9f0 arptimer() at arptimer+0x14e/frame
>> >>> 0xfffffe118aeefa30 softclock_call_cc() at
>> >>> softclock_call_cc+0x188/frame 0xfffffe118aeefb10 softclock() at
>> >>> softclock+0x47/frame 0xfffffe118aeefb30
>> >>> intr_event_execute_handlers() at
>> >>> intr_event_execute_handlers+0x93/frame 0xfffffe118aeefb70
>> >>> ithread_loop() at ithread_loop+0xa6/frame 0xfffffe118aeefbb0
>> >>> fork_exit() at fork_exit+0x84/frame 0xfffffe118aeefbf0
>> >>> fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe118aeefbf0
>> >>> --- trap 0, rip = 0, rsp = 0xfffffe118aeefcb0, rbp = 0 ---
>> >
>> >
>> > +1 from me;  I  guess introduced somwhere between 255569 and 255758,
>> > as these are my edges of kernel.old and kernel.
>> >
>>
>> r255726 was stable for me. r255759 is not.
>>
>> r255755 converted ipfilter to callout, but I am unsure if that is the
>> problem.
>>
>
> r255729 is also stable for me - I'm with r255729 again, since r255757
> crashed.

Let me know if this fixes the problem for you:
http://people.freebsd.org/~davide/review/lc_calloutfix.diff

Thanks,

-- 
Davide

"There are no solved problems; there are only problems that are more
or less solved" -- Henri Poincare