Bug#637436: linux-image-3.0.0-1-amd64: kernel BUG at mm/slab.c:3059!

[Jonathan Nieder <jrnieder@gmail.com>]

Hi,

Nelson A. de Oliveira wrote:

> I was using my computer and saw a kernel BUG:
> 
> [...] kernel BUG at [...]/mm/slab.c:3059!

For reference, this is in cache_alloc_refill:

		/*
		 * The slab was either on partial or free list so
		 * there must be at least one object available for
		 * allocation.
		 */
		BUG_ON(slabp->inuse >= cachep->num);	<==== here

in a callchain (from the photograph)

	system_call_fastpath ->
	 sys_shmat ->
	 do_shmat ->
	 kmem_cache_alloc_trace ->
	 ____cache_alloc+0x133

Is it reproducible?  Do you remember what you were doing at the time
(aside from webbrowsing)?  Any hunches or other weird symptoms?

> I was able to find only this on google: https://lkml.org/lkml/2011/8/4/308

Right, that's about a driver that wasn't merged yet, so it can only
give a sense of what kind of corruption can cause this kind of thing.

Thanks for reporting.
Jonathan