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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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