Re: [Bug 42809] New: kernel panic when receiving an ipsec packet

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Le jeudi 23 février 2012 à 03:02 +0100, Niccolò Belli a écrit :
> Il 23/02/2012 02:38, Eric Dumazet ha scritto:
> > Which driver handles this Traverse Solos card ?
> 
> drivers/atm/solos-pci.c
> 
> ~# lsmod | grep solos
> solos_pci              20009  2
> atm                    32378  7 pppoatm,br2684,solos_pci
> 

Thanks !

Please try following patch.

diff --git a/net/ipv4/xfrm4_mode_tunnel.c b/net/ipv4/xfrm4_mode_tunnel.c
index 534972e..f170933 100644
--- a/net/ipv4/xfrm4_mode_tunnel.c
+++ b/net/ipv4/xfrm4_mode_tunnel.c
@@ -84,9 +84,11 @@ static int xfrm4_mode_tunnel_input(struct xfrm_state *x, struct sk_buff *skb)
 	if (!(x->props.flags & XFRM_STATE_NOECN))
 		ipip_ecn_decapsulate(skb);
 
-	old_mac = skb_mac_header(skb);
-	skb_set_mac_header(skb, -skb->mac_len);
-	memmove(skb_mac_header(skb), old_mac, skb->mac_len);
+	if (skb_mac_header_was_set(skb)) {
+		old_mac = skb_mac_header(skb);
+		skb_set_mac_header(skb, -skb->mac_len);
+		memmove(skb_mac_header(skb), old_mac, skb->mac_len);
+	}
 	skb_reset_network_header(skb);
 	err = 0;
 


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