[Bugme-new] [Bug 8778] New: Ocotea board: kernel reports access of bad area during boot with DEBUG_SLAB=y

Bart Van Assche bart.vanassche at gmail.com
Thu Jul 19 04:43:46 EST 2007

On 7/18/07, Eugene Surovegin <ebs at ebshome.net> wrote:
> It's kmalloc, at least this is how I think skbs are allocated.
> Andrew, I don't have access to PPC hw right now (doing MIPS
> development these days), so I cannot quickly check that my theory is
> still correct for the latest kernel. I'd wait for the reporter to try
> my hack and then we can decide what to do. IIRC there was some
> provision in slab allocator to enforce alignment, when I was debugging
> this problem more then a year ago, that option didn't work.
> BTW, I think slob allocator had the same issue with alignment as slab
> with enabled debugging (at least at the time I looked at it).

Hello Eugene,

In case you didn't notice yet, I have added the following comment to the
kernel bugzilla item:

------- *Comment #5
<http://bugzilla.kernel.org/show_bug.cgi?id=8778#c5>From Bart
Van Assche <bart.vanassche at gmail.com> 2007-07-18 07:12:49 *

I have downloaded the patch from
http://kernel.ebshome.net/emac_slab_debug.diff, and I have tried it. Hereby I
confirm that this patch solves the reported kernel oops.


Bart Van Assche.
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