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SubjectRe: 2.6.21-rc2-git3 soft lockup detected on CPU#0 (crash dump kernel)
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On Mon, 2007-03-05 at 09:08 +0100, Ingo Molnar wrote:
> * Michal Piotrowski <michal.k.k.piotrowski@gmail.com> wrote:
>
> > http://www.stardust.webpages.pl/files/tbf/bitis-gabonica/2.6.21-rc2-git3-kdump/log2.txt
>
> weird. Could you do a dump with SysRq-T, SysRq-Q done /twice/ after each
> other, to see how the system progresses while in this lockup? Plus
> please also try to get a register dump via SysRq-P.
>
> Btw., the task state printout seems busted:
>
> udev_run_devd ? C15B0030 2544 979 853 (L-TLB)
>
> shouldnt that be 'R' instead of the question mark?

? are dead ones,

[<c16191d9>] do_exit+0x6f9/0x6fd
[<c161924d>] sys_exit_group+0x0/0x11
[<c161925c>] sys_exit_group+0xf/0x11
[<c1603e72>] sysenter_past_esp+0x5f/0x99

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.

tglx


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