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author | Li Zefan <lizefan@huawei.com> | 2013-03-12 15:36:00 -0700 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-05-07 19:57:26 -0700 |
commit | ed0a169166af3fc21e3b8ee9f3020298a93f9bd7 (patch) | |
tree | c9f7c1c62735be9eb758f57d0494f6928104ee95 /kernel/nsproxy.c | |
parent | 10eb78f693be5d924d8ae19264efc8da2d6cb8a3 (diff) |
cgroup: fix an off-by-one bug which may trigger BUG_ON()
commit 3ac1707a13a3da9cfc8f242a15b2fae6df2c5f88 upstream.
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'kernel/nsproxy.c')
0 files changed, 0 insertions, 0 deletions