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authorHans Schillstrom <hans.schillstrom@ericsson.com>2011-04-04 17:25:18 +0400
committerPatrick McHardy <kaber@trash.net>2011-04-04 17:25:18 +0400
commita09d19779f3ffac6e16821accc2c1cc4df1b643a (patch)
tree26ae50dcffd19813b21f3cacb9a11a1908dcf3f0 /include
parentb4232a22776aa5d063f890d21ca69870dbbe431b (diff)
downloadlinux-a09d19779f3ffac6e16821accc2c1cc4df1b643a.tar.xz
IPVS: fix NULL ptr dereference in ip_vs_ctl.c ip_vs_genl_dump_daemons()
ipvsadm -ln --daemon will trigger a Null pointer exception because ip_vs_genl_dump_daemons() uses skb_net() instead of skb_sknet(). To prevent others from NULL ptr a check is made in ip_vs.h skb_net(). Signed-off-by: Hans Schillstrom <hans.schillstrom@ericsson.com> Signed-off-by: Simon Horman <horms@verge.net.au> Signed-off-by: Patrick McHardy <kaber@trash.net>
Diffstat (limited to 'include')
-rw-r--r--include/net/ip_vs.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/net/ip_vs.h b/include/net/ip_vs.h
index 30b49ed72f0d..4d1b71ae82ba 100644
--- a/include/net/ip_vs.h
+++ b/include/net/ip_vs.h
@@ -52,7 +52,7 @@ static inline struct net *skb_net(const struct sk_buff *skb)
*/
if (likely(skb->dev && skb->dev->nd_net))
return dev_net(skb->dev);
- if (skb_dst(skb)->dev)
+ if (skb_dst(skb) && skb_dst(skb)->dev)
return dev_net(skb_dst(skb)->dev);
WARN(skb->sk, "Maybe skb_sknet should be used in %s() at line:%d\n",
__func__, __LINE__);