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    SubjectRe: CONFIG_NUMA breaks hibernation on x86-32 with PAE

    * KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> wrote:

    > On Mon, 10 Nov 2008 08:55:29 +0100
    > Pavel Machek <pavel@suse.cz> wrote:
    >
    > > >
    > > > * Pavel Machek <pavel@suse.cz> wrote:
    > > >
    > > > > ...at least on 2.6.27 and 2.6.28-rc3. Resume gets to
    > > > > acpi_hibernation_leave, then SLAB corruption is detected and machine
    > > > > ends in series of oops.
    > > > >
    > > > > Any ideas how to debug that?
    > > >
    > > > do you get any serial log or USB key output, so that it's debuggable
    > > > directly?
    > >
    > > Well, I can transcribe the BUG() from a picture, I guess, but it does
    > > not seem to contain much useful info: SLAB corruption was detected and
    > > backtrace is not quite important at that point...
    > >
    > > Serial console is probably possible, but would take few days to setup.
    > > Pavel
    >
    > How about this patch ?
    > ==
    > http://marc.info/?l=linux-mm-commits&m=122624388629106&w=2
    > ==

    note, that fix of Rafael's is now upstream as:

    c5d7124: Fix __pfn_to_page(pfn) for CONFIG_DISCONTIGMEM=y

    and included in v2.6.28-rc4.

    But yes, this area of code (the save/restore of memory maps) would be
    the main suspect to investigate.

    Ingo


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