* Marco Berizzi [off-list ref] wrote:

Herbert Xu wrote:

quoted

On Fri, May 09, 2008 at 11:50:00AM +0200, Marco Berizzi wrote:

quoted

I have rebooted the two boxes with slub_debug.
This is the output taken with network console.
Herbert does it help you?

BUG: unable to handle kernel paging request at 6b6b6b9f

Unfortunately this just confirms that your skb has been freed
prematurely because 6b is the poison value.

However, it doesn't point us at the offender.

:-((

you could try x86.git and enable CONFIG_KMEMCHECK, which catches all 
sorts of memory corruption bugs at its root:

  http://people.redhat.com/mingo/x86.git/README

it's for 32-bit currently, and depends on the following CONFIG details 
in your .config:

        depends on X86_32
        depends on !X86_USE_3DNOW
        depends on !CC_OPTIMIZE_FOR_SIZE
        depends on !DEBUG_PAGEALLOC && SLUB

note that CONFIG_DEBUG_PAGEALLOC=y will catch a few types of corruption 
too. Note that KMEMCHECK and DEBUG_PAGEALLOC are exclusive.

	Ingo