tree 53bce102b87f076951c45814b6871b3cbd172c78
parent 9b3009604b8e305c32125530a3cbcc57d88f3bc1
author Richard Alpe <richard.alpe@ericsson.com> 1457011241 +0100
committer David S. Miller <davem@davemloft.net> 1457322896 -0500

tipc: don't check link reset on non existing link

Make sure we have a link before checking if it has been reset or not.

Prior to this patch tipc_link_is_reset() could be called with a non
existing link, resulting in a null pointer dereference.

Signed-off-by: Richard Alpe <richard.alpe@ericsson.com>
Acked-by: Jon Maloy <jon.maloy@ericsson.com>
Reviewed-by: Erik Hugne <erik.hugne@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>