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| author | Christoph Lameter <cl@linux.com> | 2013-01-23 22:45:48 +0100 |
|---|---|---|
| committer | Pekka Enberg <penberg@kernel.org> | 2013-04-05 13:23:06 +0200 |
| commit | 7cccd80b4397699902aced1ad3d692d384aaab77 (patch) | |
| tree | 010bad7b7e3d3969f6050406b448fbcbc57cdca0 /mm/slab.c | |
| parent | slub: Do not dereference NULL pointer in node_match (diff) | |
| download | linux-7cccd80b4397699902aced1ad3d692d384aaab77.tar.xz linux-7cccd80b4397699902aced1ad3d692d384aaab77.zip | |
slub: tid must be retrieved from the percpu area of the current processor
As Steven Rostedt has pointer out: rescheduling could occur on a
different processor after the determination of the per cpu pointer and
before the tid is retrieved. This could result in allocation from the
wrong node in slab_alloc().
The effect is much more severe in slab_free() where we could free to the
freelist of the wrong page.
The window for something like that occurring is pretty small but it is
possible.
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
Diffstat (limited to 'mm/slab.c')
0 files changed, 0 insertions, 0 deletions