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

[Michal Piotrowski]

On 05/03/07, Ingo Molnar <mingo@xxxxxxx> wrote:
> * Thomas Gleixner <tglx@xxxxxxxxxxxxx> wrote:
>
> > > shouldnt that be 'R' instead of the question mark?
> >
> > ? are dead ones,
>
> ok.
>
> > The interesting part is here:
> >
> > 1 lock held by udevd/918:
> >  #0:  (&mm->mmap_sem){----}, at: [<c161135b>] do_page_fault+0x150/0x50d
> >
> > But udevd/918 is nowhere in the sysrq-t output.
>
> 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

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/)
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