diff options
| author |   Richard Alpe <richard.alpe@ericsson.com> | 2016-03-03 14:20:41 +0100 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2016-03-06 22:54:56 -0500 |
| commit | 2837f39c7cdbd209ab04d1c1f4eca015a40d5cd6 (patch) | |
| tree | 53bce102b87f076951c45814b6871b3cbd172c78 /net/tipc/node.c | |
| parent | tipc: add net device to skb before UDP xmit (diff) | |
| download | linux-dev-2837f39c7cdbd209ab04d1c1f4eca015a40d5cd6.tar.xz linux-dev-2837f39c7cdbd209ab04d1c1f4eca015a40d5cd6.zip | |
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>
Diffstat (limited to 'net/tipc/node.c')
| -rw-r--r-- | net/tipc/node.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/tipc/node.c b/net/tipc/node.c index cdb79503d890..590d597589cf 100644 --- a/net/tipc/node.c +++ b/net/tipc/node.c @@ -843,7 +843,7 @@ void tipc_node_check_dest(struct net *net, u32 onode, memcpy(&le->maddr, maddr, sizeof(*maddr)); exit: tipc_node_write_unlock(n); - if (reset && !tipc_link_is_reset(l)) + if (reset && l && !tipc_link_is_reset(l)) tipc_node_link_down(n, b->identity, false); tipc_node_put(n); } |