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authorLi Zefan <lizefan@huawei.com>2013-03-13 02:36:00 +0400
committerTejun Heo <tj@kernel.org>2013-03-20 18:50:04 +0400
commit3ac1707a13a3da9cfc8f242a15b2fae6df2c5f88 (patch)
tree2697a8fe41fcd9e5b31f5c3582fbfb2cdbdd58bf /security
parent80f36c2a1a612ca419e5b864a7e4808e797d9feb (diff)
downloadlinux-3ac1707a13a3da9cfc8f242a15b2fae6df2c5f88.tar.xz
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')
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