tree b56047ea80fc041c36996a98f62e97e10e7f22a5
parent 9243b25b2361a0818caaf8ab2ef7d1c5be4b1211
author YOSHIFUJI Hideaki/吉藤英明 <hideaki.yoshifuji@miraclelinux.com> 1436797690 +0900
committer David S. Miller <davem@davemloft.net> 1437019573 -0700

ipv6: Fix finding best source address in ipv6_dev_get_saddr().

Commit 9131f3de2 ("ipv6: Do not iterate over all interfaces when
finding source address on specific interface.") did not properly
update best source address available.  Plus, it introduced
possible NULL pointer dereference.

Bug was reported by Erik Kline <ek@google.com>.
Based on patch proposed by Hajime Tazaki <thehajime@gmail.com>.

Fixes: 9131f3de24db4dc12199aede7d931e6703e97f3b ("ipv6: Do not
	iterate over all interfaces when finding source address
	on specific interface.")
Signed-off-by: YOSHIFUJI Hideaki <hideaki.yoshifuji@miraclelinux.com>
Acked-by: Hajime Tazaki <thehajime@gmail.com>
Acked-by: Erik Kline <ek@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>