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authorChristoph Lameter <cl@linux.com>2013-01-23 21:45:47 +0000
committerPekka Enberg <penberg@kernel.org>2013-04-05 14:23:05 +0300
commit4d7868e6475d478172581828021bd8a356726679 (patch)
treef8144ea29586a3f50278936c4a8a5ab02a61636c /sound/i2c/Makefile
parent338b2642290ef3193229ece8cfc776ac4fe8869d (diff)
downloadlinux-4d7868e6475d478172581828021bd8a356726679.tar.bz2
slub: Do not dereference NULL pointer in node_match
The variables accessed in slab_alloc are volatile and therefore the page pointer passed to node_match can be NULL. The processing of data in slab_alloc is tentative until either the cmpxhchg succeeds or the __slab_alloc slowpath is invoked. Both are able to perform the same allocation from the freelist. Check for the NULL pointer in node_match. A false positive will lead to a retry of the loop in __slab_alloc. Signed-off-by: Christoph Lameter <cl@linux.com> Signed-off-by: Pekka Enberg <penberg@kernel.org>
Diffstat (limited to 'sound/i2c/Makefile')
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