ip: fix error handling in ip_finish_output2()
authorVasiliy Kulikov <segoon@openwall.com>
Mon, 6 Aug 2012 03:55:29 +0000 (03:55 +0000)
committerDavid S. Miller <davem@davemloft.net>
Mon, 6 Aug 2012 20:30:01 +0000 (13:30 -0700)
commit9871f1ad677d95ffeca80e2c21b70af9bfc9cc91
tree85e0fc87c1df524a936d2c0d61a86bd9f994c760
parent91d27a8650d5359a7a320daeb35b88cdea15e3a8
ip: fix error handling in ip_finish_output2()

__neigh_create() returns either a pointer to struct neighbour or PTR_ERR().
But the caller expects it to return either a pointer or NULL.  Replace
the NULL check with IS_ERR() check.

The bug was introduced in a263b3093641fb1ec377582c90986a7fd0625184
("ipv4: Make neigh lookups directly in output packet path.").

Signed-off-by: Vasily Kulikov <segoon@openwall.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/ipv4/ip_output.c