tipc: check nl sock before parsing nested attributes
authorRichard Alpe <richard.alpe@ericsson.com>
Mon, 16 May 2016 09:14:54 +0000 (11:14 +0200)
committerDavid S. Miller <davem@davemloft.net>
Tue, 17 May 2016 01:58:54 +0000 (21:58 -0400)
commit45e093ae2830cd1264677d47ff9a95a71f5d9f9c
tree72b47612fec35cff7626247e1e28c99715b31cbd
parent77f57761466e9aef2b57acf8ce07df11bf360e34
tipc: check nl sock before parsing nested attributes

Make sure the socket for which the user is listing publication exists
before parsing the socket netlink attributes.

Prior to this patch a call without any socket caused a NULL pointer
dereference in tipc_nl_publ_dump().

Tested-and-reported-by: Baozeng Ding <sploving1@gmail.com>
Signed-off-by: Richard Alpe <richard.alpe@ericsson.com>
Acked-by: Jon Maloy <jon.maloy@ericsson.cm>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/tipc/socket.c