On Thu 06-12-12 10:17:44, Henrik Rydberg wrote:
> Hi Linus,
>
> This is the third time I encounter this oops in 3.7, but the first
> time I managed to get a decent screenshot:
>
> http://bitmath.org/test/oops-3.7-rc8.jpg
>
> It seems to have to do with page migration. I run with transparent
> hugepages configured, just for the fun of it.
>
> I am happy to test any suggestions.
Adding linux-mm and Mel as an author of compaction in particular to CC...
It seems that while traversing struct page structures, we entered into a new
huge page (note that RBX is 0xffffea0001c00000 - just the beginning of
a huge page) and oopsed on PageBuddy test (_mapcount is at offset 0x18 in
struct page). It might be useful if you provide disassembly of
isolate_freepages_block() function in your kernel so that we can guess more
from other register contents...
Honza
Honza
--
Jan Kara <j...@suse.cz>
SUSE Labs, CR
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