diff options
| author | Christoph Lameter <[email protected]> | 2013-01-23 21:45:47 +0000 |
|---|---|---|
| committer | Pekka Enberg <[email protected]> | 2013-04-05 14:23:05 +0300 |
| commit | 4d7868e6475d478172581828021bd8a356726679 (patch) | |
| tree | f8144ea29586a3f50278936c4a8a5ab02a61636c /tools/perf/scripts/python/syscall-counts-by-pid.py | |
| parent | 338b2642290ef3193229ece8cfc776ac4fe8869d (diff) | |
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 <[email protected]>
Signed-off-by: Pekka Enberg <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/syscall-counts-by-pid.py')
0 files changed, 0 insertions, 0 deletions