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| author | Jack Steiner <steiner@sgi.com> | 2009-04-02 23:59:48 (GMT) |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-04-03 02:05:11 (GMT) |
| commit | 4f032ac4122a77dbabf7a24b2739b2790448180f (patch) | |
| tree | 6a56afe2e32f346f2d24ac592a7cfdd0263c1629 /kernel/rtmutex-debug.c | |
| parent | 2d09cde985702503970d7cc18d762fae17e1cf88 (diff) | |
| download | linux-fsl-qoriq-4f032ac4122a77dbabf7a24b2739b2790448180f.tar.xz | |
cpumask: fix slab corruption caused by alloc_cpumask_var_node()
Fix slab corruption caused by alloc_cpumask_var_node() overwriting the
tail end of an off-stack cpumask.
The function zeros out cpumask bits beyond the last possible cpu. The
starting point for zeroing should be the beginning of the mask offset by a
byte count derived from the number of possible cpus. The offset was
calculated in bits instead of bytes. This resulted in overwriting the end
of the cpumask.
Signed-off-by: Jack Steiner <steiner@sgi.com>
Acked-by: Mike Travis <travis.sgi.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: <stable@kernel.org> [2.6.29.x]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/rtmutex-debug.c')
0 files changed, 0 insertions, 0 deletions