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SubjectRe: [PATCH] Fixes for prep_zero_page
On Thu, 13 Jan 2005, Chris Wright wrote:

> * Zwane Mwaikambo (zwane@arm.linux.org.uk) wrote:
> > It looks like it's still not happy with CONFIG_DEBUG_PAGEALLOC under load.
> >
> > Unable to handle kernel paging request at virtual address ec5d97f4
>
> Is that in vmalloc space?

Hmm it looks like.

> > printing eip:
> > c014a882
> > *pde = 0083e067
> > Oops: 0000 [#1]
> > PREEMPT SMP DEBUG_PAGEALLOC
> > Modules linked in:
> > CPU: 0
> > EIP: 0060:[<c014a882>] Not tainted VLI
> > EFLAGS: 00010002 (2.6.10-mm2)
> > EIP is at check_slabuse+0x52/0xf0
>
> Hmm, isn't that from Manfred's patch to periodically scan? Doesn't look
> to me like it's related to the page prep fixup. What kind of load, etc?

I had an email exchange with Christopher and we came to the conclusion
that it's breakage elsewhere with CONFIG_DEBUG_PAGEALLOC.

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