On 07/04/2016 02:47 PM, Vegard Nossum wrote:
struct fib_nh->nh_dev can be NULL, so we should check it before calling
__in_dev_get_rcu on it.
That should say __in_dev_get_rtnl(), obviously.
Multiple places seem to want this (and check the return value), so we can
add a convenience wrapper for this.
This fixes a crash in AF_NETLINK sendmsg().
Please double check that I caught all the callers that need the NULL
guard.
Fixes: 0eeb075fad73 ("net: ipv4 sysctl option to ignore routes when nexthop link is
down")
Cc: Andy Gospodarek <[email protected]>
Cc: Dinesh Dutt <[email protected]>
Cc: Scott Feldman <[email protected]>
Cc: David S. Miller <[email protected]>
Signed-off-by: Vegard Nossum <[email protected]>
I guess we could also add:
Cc: [email protected]
Vegard
