From: Neil Horman <nhorman@tuxdriver.com>
Date: Fri, 10 Feb 2012 05:43:38 +0000 (+0000)
Subject: netprio_cgroup: fix wrong memory access when NETPRIO_CGROUP=m
X-Git-Tag: v3.3-rc4~34^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2b73bc65e2771372c818db7955709c8caedbf8b9;p=pandora-kernel.git

netprio_cgroup: fix wrong memory access when NETPRIO_CGROUP=m

When the netprio_cgroup module is not loaded, net_prio_subsys_id
is -1, and so sock_update_prioidx() accesses cgroup_subsys array
with negative index subsys[-1].

Make the code resembles cls_cgroup code, which is bug free.

Origionally-authored-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
CC: "David S. Miller" <davem@davemloft.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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