[PATCH] IPv6: Fix BUG When Received Unknown Protocol

From: $B5HF#1QL@(
Date: Thu Nov 21 2002 - 01:32:03 EST

Hi,

Since 2.5.43, kernel panics by executing BUG() when
received unknown protocol in IPv6 packet.
This is because ip6_input_finish() try to kfree_skb()
while icmpv6_param_prob() has already kfree_skb()'ed the skb.

Thanks.

Patch-Name: Fix BUG When Received Unknown Protocol
Patch-Author: YOSHIFUJI Hideaki / USAGI Project <yoshfuji@linux-ipv6.org>
Index: net/ipv6/ip6_input.c
===================================================================
RCS file: /cvsroot/usagi/usagi/kernel/linux25/net/ipv6/ip6_input.c,v
retrieving revision 1.1.1.3
retrieving revision 1.2
diff -u -r1.1.1.3 -r1.2
--- net/ipv6/ip6_input.c 31 Oct 2002 03:58:27 -0000 1.1.1.3
+++ net/ipv6/ip6_input.c 21 Nov 2002 05:30:59 -0000 1.2
@@ -182,9 +182,10 @@
                 if (!raw_sk) {
                         IP6_INC_STATS_BH(Ip6InUnknownProtos);
                         icmpv6_param_prob(skb, ICMPV6_UNK_NEXTHDR, nhoff);
- } else
+ } else {
                         IP6_INC_STATS_BH(Ip6InDelivers);
- kfree_skb(skb);
+ kfree_skb(skb);
+ }
         }
 
         return 0; 

-- 
Hideaki YOSHIFUJI @ USAGI Project <yoshfuji@linux-ipv6.org>
GPG FP: 9022 65EB 1ECF 3AD1 0BDF  80D8 4807 F894 E062 0EEA
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This archive was generated by hypermail 2b29 : Sat Nov 23 2002 - 22:00:35 EST