Commit 1b83336b authored Oct 18, 2007 by Patrick McHardy Committed by David S. Miller Oct 18, 2007

[NET]: Fix OOPS due to missing check in dev_parse_header().



[ This is kernel bugzilla 9174 "linux-2.6.23-git11 kernel panic" ]

The device in question is an IPv6-over-IPv4 tunnel, which doesn't have
any header_ops, so the crash happens in dev_parse_header when
dereferencing them.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent df2e014b

include/linux/netdevice.h

+1 −1

Original line number	Diff line number	Diff line
		@@ -827,7 +827,7 @@ static inline int dev_parse_header(const struct sk_buff *skb,
		{
		const struct net_device *dev = skb->dev;

		if (!dev->header_ops->parse)
		if (!dev->header_ops \|\| !dev->header_ops->parse)
		return 0;
		return dev->header_ops->parse(skb, haddr);
		}