Re: CONFIG_NUMA breaks hibernation on x86-32 with PAE


* KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx> wrote:

On Mon, 10 Nov 2008 08:55:29 +0100
Pavel Machek <pavel@xxxxxxx> wrote:


* Pavel Machek <pavel@xxxxxxx> 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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