David Ahern 8a14e46f14 net/ipv6: Fix missing rcu dereferences on from
kbuild test robot reported 2 uses of rt->from not properly accessed
using rcu_dereference:
1. add rcu_dereference_protected to rt6_remove_exception_rt and make
   sure it is always called with rcu lock held.

2. change rt6_do_redirect to take a reference on 'from' when accessed
   the first time so it can be used the sceond time outside of the lock

Fixes: a68886a69180 ("net/ipv6: Make from in rt6_info rcu protected")
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-23 16:12:55 -04:00
..
2018-03-27 13:18:09 -04:00
2018-03-27 13:18:09 -04:00
2018-04-17 13:19:22 -04:00
2018-04-19 15:40:13 -04:00
2018-02-28 11:43:28 -05:00
2017-05-21 13:42:36 -04:00
2018-03-27 13:18:09 -04:00
2018-04-23 10:21:24 -04:00
2018-02-28 11:43:28 -05:00
2018-03-27 13:18:09 -04:00
2016-12-25 17:21:23 +01:00
2018-03-27 13:18:09 -04:00
2017-09-01 18:35:23 -07:00
2018-03-27 13:18:09 -04:00
2015-11-03 10:52:13 -05:00
2018-03-27 13:18:09 -04:00
2018-02-28 11:43:28 -05:00