Re: [bug, netconsole, SLUB] BUG skbuff_head_cache: Poison overwritten

Pekka Enberg
2008-07-18T09:16:38Z

On Fri, Jul 18, 2008 at 12:11 PM, Ingo Molnar <mingo@elte.hu> wrote:
>
> * Pekka J Enberg <penberg@cs.helsinki.fi> wrote:
>
>> > Object 0xf658ae70: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
>>
>> It's bit unfortunate that we don't see full dump of the corruption
>> here because SLUB limits the output to 128 bytes. Ingo, you might want
>> to try this patch so that we can see all of it:
>
> ok, applied this as a debug special to tip/out-of-tree - future
> incidents should have the full object dump.
>
> would makes sense for upstream too i think, or increase the limit to 4K
> or so. (which is still fair to be dumped into a syslog)

SLUB already limits object sizes to less than PAGE_SIZE so the patch
should be fine. Christoph, are you okay with this going upstream?