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

From: Pekka Enberg
Date: Fri Jul 18 2008 - 05:16:41 EST

On Fri, Jul 18, 2008 at 12:11 PM, Ingo Molnar <mingo@xxxxxxx> wrote:
> * Pekka J Enberg <penberg@xxxxxxxxxxxxxx> 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?
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