tree eeeea052a0b13d2f97435fe33caa5139e4729a53
parent 96ca7ffe748bf91f851e6aa4479aa11c8b1122ba
author Eric Dumazet <edumazet@google.com> 1341783910 +0000
committer David S. Miller <davem@davemloft.net> 1341870654 -0700

net: cgroup: fix out of bounds accesses

dev->priomap is allocated by extend_netdev_table() called from
update_netdev_tables().
And this is only called if write_priomap() is called.

But if write_priomap() is not called, it seems we can have out of bounds
accesses in cgrp_destroy(), read_priomap() & skb_update_prio()

With help from Gao Feng

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Neil Horman <nhorman@tuxdriver.com>
Cc: Gao feng <gaofeng@cn.fujitsu.com>
Acked-by: Gao feng <gaofeng@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>