Messages in this thread | | | Date | Wed, 15 Jun 2011 10:03:14 -0500 (CDT) | From | Christoph Lameter <> | Subject | Re: SLUB BUG: check_slab called with interrupts enabled |
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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.
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