Re: 2.6.21-rc2-git3 soft lockup detected on CPU#0 (crash dump kernel)

["Michal Piotrowski" <michal.k.k.piotrowski@gmail.com>]

On 05/03/07, Ingo Molnar <mingo@elte.hu> wrote:
>
> * Michal Piotrowski <michal.k.k.piotrowski@gmail.com> wrote:
>
> > >also below is a softlockup-debug patch that might be useful, which adds
> > >a tick/tock output so it spams the console once per second but can show
> > >the dynamics of lockups (and other delays).
> >
> > I have applied this patch
> > http://www.stardust.webpages.pl/files/tbf/bitis-gabonica/2.6.21-rc2-git3-kdump/log3.txt
>
> thanks. It seems that the 'BUG: soft lockup detected' message does not
> occur in this log though - and that there are bootup messages between
> the two sysrq outputs:
>
> [  221.101833] skge eth1: disabling interface
> [  228.740911] audit(1173094442.943:11): user pid=3245 uid=0
> auid=4294967295 subj=system_u:system_r:hwclock_t:s0 msg='changing system
> time: exe="/sbin/hwclock"
> (hostname=?, addr=?, terminal=console res=success)'
> [  233.148571] md: md1 in immediate safe mode
>
> plus there's trouble with irq 10:
>
> [  132.013194] irq 10: nobody cared (try booting with the "irqpoll" option)
> [  132.072771] Disabling IRQ #10
>
> that prompted you to enable irqpoll, right?

No. irqpoll is added by /etc/init.d/kdump script (FC6).

> So am i right that without
> irqpoll there's no lockup?

I will check this.

>
>         Ingo
>

Regards,
Michal

-- 
Michal K. K. Piotrowski
LTG - Linux Testers Group (PL)
(http://www.stardust.webpages.pl/ltg/)
LTG - Linux Testers Group (EN)
(http://www.stardust.webpages.pl/linux_testers_group_en/)