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SubjectRe: do_syslog/__down_trylock lockup in current BK
On Mon, Sep 09, 2002 at 10:02:11PM +0200, Ingo Molnar wrote:
>
> the lockup, on both CPUs:
>
> >>EIP; c01200b1 <zap_thread+21/16d> <=====
> Trace; c0120092 <zap_thread+2/16d>
> Trace; c011f00c <exit_notify+10c/230>
> Trace; c011f41a <do_exit+2ea/370>
> Trace; c0125755 <schedule_timeout+b5/c0>
> Trace; c0126686 <sig_exit+36/40>
> Trace; c0127c54 <get_signal_to_deliver+2d4/360>
> Trace; c0107cf3 <do_signal+c3/100>
> Trace; c012d572 <sys_futex+182/1b0>
> Trace; c0107fce <work_notifysig+13/15>
>
> >>EIP; c0106c5f <__write_lock_failed+f/20> <=====
> Trace; c0120316 <.text.lock.exit+119/133>
> Trace; c011ef16 <exit_notify+16/230>
> Trace; c011f41a <do_exit+2ea/370>
> Trace; c0125755 <schedule_timeout+b5/c0>
> Trace; c0126686 <sig_exit+36/40>
> Trace; c0127c54 <get_signal_to_deliver+2d4/360>
> Trace; c0107cf3 <do_signal+c3/100>
> Trace; c012d572 <sys_futex+182/1b0>
> Trace; c0107fce <work_notifysig+13/15>
>
> ie. either the 'zap_again' produces an infinite loop, or one of the lists
> became corrupted. I suspect the former.

How do you reproduce this? It's probably my fault, if it's stuck in
zap_thread... but that's a pretty suspicious looking trace to me, if it
goes from schedule_timeout to do_exit.
--
Daniel Jacobowitz
MontaVista Software Debian GNU/Linux Developer
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