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| author | Li Zefan | 2013-03-12 23:36:00 +0100 |
|---|---|---|
| committer | Tejun Heo | 2013-03-20 15:50:04 +0100 |
| commit | 3ac1707a13a3da9cfc8f242a15b2fae6df2c5f88 (patch) | |
| tree | 2697a8fe41fcd9e5b31f5c3582fbfb2cdbdd58bf /security/device_cgroup.c | |
| parent | cgroup: remove useless code in cgroup_write_event_control() (diff) | |
| download | kernel-qcow2-linux-3ac1707a13a3da9cfc8f242a15b2fae6df2c5f88.tar.gz kernel-qcow2-linux-3ac1707a13a3da9cfc8f242a15b2fae6df2c5f88.tar.xz kernel-qcow2-linux-3ac1707a13a3da9cfc8f242a15b2fae6df2c5f88.zip | |
cgroup: fix an off-by-one bug which may trigger BUG_ON()
The 3rd parameter of flex_array_prealloc() is the number of elements,
not the index of the last element.
The effect of the bug is, when opening cgroup.procs, a flex array will
be allocated and all elements of the array is allocated with
GFP_KERNEL flag, but the last one is GFP_ATOMIC, and if we fail to
allocate memory for it, it'll trigger a BUG_ON().
Signed-off-by: Li Zefan <lizefan@huawei.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: stable@vger.kernel.org
Diffstat (limited to 'security/device_cgroup.c')
0 files changed, 0 insertions, 0 deletions