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SubjectRe: 2.6.29-rc5 hanging at boot when CONFIG_LOCK_STAT=y
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On Mon, 2009-02-16 at 13:29 +0100, Ingo Molnar wrote:
> * Adam J. Richter <adam@yggdrasil.com> wrote:
>
> > Hello Peter and Ingo,
> >
> > Under linux-2.6.29-rc5, and I believe all earlier 2.6.29-rc
> > releases, CONFIG_LOCK_STAT=y causes my system to hang at boot when
> > booting from lilo-22.8. Linux-2.6.28 does not have this hang.
> > Disabling LOCK_STAT or booting from grub avoids the hang. These are
> > sufficient workarounds for me, but I document it here in case anyone
> > else is seeing something similar or wants to take a deeper look at it.
>
> hm, so if booting from LILO you see a hang, while when booting with GRUB
> it works fine?
>
> Could it be LILO messing up the kernel image loading somehow? LOCK_STAT
> might just be the thing that brings the kernel over a specific size.

There used to be an issue long ago on s390 where the per-cpu section was
stomping on the initrd or something similar. Lockstat generates a huge
per-cpu BSS section.



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