lkml.org 
[lkml]   [2011]   [Jun]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: SLUB BUG: check_slab called with interrupts enabled
On Wed, 15 Jun 2011, Rik van Riel wrote:

> Hi Christoph,
>
> last night I got an interesting backtrace running 3.0-rc3
> (Fedora Rawhide kernel package). Unfortunately netconsole
> seems to be incompatible with KVM at the moment, so I had
> to capture the oops on my digital camera and will be
> transcribing just the backtrace.
>
> Essentially, kernel 3.0-rc3 hit this bug:
>
> static int check_slab(struct kmem_cache *s, struct page *page)
> {
> int maxobj;
>
> VM_BUG_ON(!irqs_disabled());
>
> The call trace:
>
> check_slab
> alloc_debug_processing
> __slab_alloc
> kmem_cache_alloc
> bvec_alloc_bs
> bio_alloc_bioset
> bio_alloc
> mpage_alloc
> do_mpage_readpage
> ... followed by ext4 and VFS code, obviously innocent

__slab_alloc() disables interrupts so alloc_debug_processing() should not
run into this issue.

There are no additional special slub patches applied right? Because some
of the patches under discussion change the interrupt disable handling a
bit.



\
 
 \ /
  Last update: 2011-06-15 17:05    [W:0.038 / U:2.628 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site