tree 4c689dd688fbe7cbb4c3c61e2b246d5f48805aa6
parent af9debd461d10fe582c9c0e80eafa69f698331ed
author Olaf Kirch <[EMAIL PROTECTED]> Tue, 12 Jul 2005 11:01:42 -0700
committer David S. Miller <[EMAIL PROTECTED]> Tue, 12 Jul 2005 11:01:42 -0700
[IPV4]: Prevent oops when printing martian source
In some cases, we may be generating packets with a source address that
qualifies as martian. This can happen when we're in the middle of setting
up the network, and netfilter decides to reject a packet with an RST.
The IPv4 routing code would try to print a warning and oops, because
locally generated packets do not have a valid skb->mac.raw pointer
at this point.
Signed-off-by: David S. Miller <[EMAIL PROTECTED]>
net/ipv4/route.c | 2 +-
1 files changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -1685,7 +1685,7 @@ static void ip_handle_martian_source(str
printk(KERN_WARNING "martian source %u.%u.%u.%u from "
"%u.%u.%u.%u, on dev %s\n",
NIPQUAD(daddr), NIPQUAD(saddr), dev->name);
- if (dev->hard_header_len) {
+ if (dev->hard_header_len && skb->mac.raw) {
int i;
unsigned char *p = skb->mac.raw;
printk(KERN_WARNING "ll header: ");
-
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