tipc: don't check link reset on non existing link
authorRichard Alpe <richard.alpe@ericsson.com>
Thu, 3 Mar 2016 13:20:41 +0000 (14:20 +0100)
committerDavid S. Miller <davem@davemloft.net>
Mon, 7 Mar 2016 03:54:56 +0000 (22:54 -0500)
commit2837f39c7cdbd209ab04d1c1f4eca015a40d5cd6
tree53bce102b87f076951c45814b6871b3cbd172c78
parent9b3009604b8e305c32125530a3cbcc57d88f3bc1
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>
net/tipc/node.c