From: Li Zefan Date: Tue, 12 Mar 2013 22:36:00 +0000 (-0700) Subject: cgroup: fix an off-by-one bug which may trigger BUG_ON() X-Git-Tag: omap-for-v3.10/dt-fixes-for-merge-window~124^2~32 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3ac1707a13a3da9cfc8f242a15b2fae6df2c5f88;p=pandora-kernel.git 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 Signed-off-by: Tejun Heo Cc: stable@vger.kernel.org --- Reading git-diff-tree failed