ipv4: fix refcount leak in fib_check_nh()
authorEric Dumazet <edumazet@google.com>
Sat, 15 Aug 2015 17:54:07 +0000 (10:54 -0700)
committerDavid S. Miller <davem@davemloft.net>
Mon, 17 Aug 2015 05:14:32 +0000 (22:14 -0700)
commit1e3136789975f03e461798149309034e5213c1b4
tree82c553cbe65590071c28001f27e6325ad240bbb9
parentd52736e24fe2e927c26817256f8d1a3c8b5d51a0
ipv4: fix refcount leak in fib_check_nh()

fib_lookup() forces FIB_LOOKUP_NOREF flag, while fib_table_lookup()
does not.

This patch solves the typical message at reboot time or device
dismantle :

unregister_netdevice: waiting for eth0 to become free. Usage count = 4

Fixes: 3bfd847203c6 ("net: Use passed in table for nexthop lookups")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: David Ahern <dsa@cumulusnetworks.com>
Acked-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/ipv4/fib_semantics.c