From: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Date: Fri, 20 Mar 2015 14:37:17 +0000 (-0300)
Subject: ipv6: invert join/leave anycast rtnl/socket locking order
X-Git-Tag: omap-for-v4.1/fixes-rc1~141^2~196
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c4a6853d8fb2b122686bc6a7c472956e87090f4e;p=pandora-kernel.git

ipv6: invert join/leave anycast rtnl/socket locking order

Commit baf606d9c9b1 ("ipv4,ipv6: grab rtnl before locking the socket")
missed to update two setsockopt options, IPV6_JOIN_ANYCAST and
IPV6_LEAVE_ANYCAST, causing a lock inverstion regarding to the updated ones.

As ipv6_sock_ac_join and ipv6_sock_ac_leave are only called from
do_ipv6_setsockopt, we are good to just move the rtnl lock upper.

Fixes: baf606d9c9b1 ("ipv4,ipv6: grab rtnl before locking the socket")
Reported-by: Ying Huang <ying.huang@intel.com>
Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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