Re: 2.5.69-mm2 Kernel panic, possibly network related

From: David S. Miller (davem@redhat.com)
Date: Thu May 08 2003 - 12:21:55 EST


   From: William Lee Irwin III <wli@holomorphy.com>
   Date: Wed, 7 May 2003 18:38:54 -0700
   
   Can you try one kernel with the netfilter cset backed out, and another
   with the re-slabification patch backed out? (But not with both backed
   out simultaneously).

Not needed, this should cure the problem:

--- net/ipv4/netfilter/ip_nat_core.c.~1~ Thu May 8 11:23:22 2003
+++ net/ipv4/netfilter/ip_nat_core.c Thu May 8 11:25:56 2003
@@ -861,6 +861,7 @@
         } *inside;
         unsigned int i;
         struct ip_nat_info *info = &conntrack->nat.info;
+ int hdrlen;
 
         if (!skb_ip_make_writable(pskb,(*pskb)->nh.iph->ihl*4+sizeof(*inside)))
                 return 0;
@@ -868,10 +869,12 @@
 
         /* We're actually going to mangle it beyond trivial checksum
            adjustment, so make sure the current checksum is correct. */
- if ((*pskb)->ip_summed != CHECKSUM_UNNECESSARY
- && (u16)csum_fold(skb_checksum(*pskb, (*pskb)->nh.iph->ihl*4,
- (*pskb)->len, 0)))
- return 0;
+ if ((*pskb)->ip_summed != CHECKSUM_UNNECESSARY) {
+ hdrlen = (*pskb)->nh.iph->ihl * 4;
+ if ((u16)csum_fold(skb_checksum(*pskb, hdrlen,
+ (*pskb)->len - hdrlen, 0)))
+ return 0;
+ }
 
         /* Must be RELATED */
         IP_NF_ASSERT((*pskb)->nfct
@@ -948,10 +951,12 @@
         }
         READ_UNLOCK(&ip_nat_lock);
 
+ hdrlen = (*pskb)->nh.iph->ihl * 4;
+
         inside->icmp.checksum = 0;
- inside->icmp.checksum = csum_fold(skb_checksum(*pskb,
- (*pskb)->nh.iph->ihl*4,
- (*pskb)->len, 0));
+ inside->icmp.checksum = csum_fold(skb_checksum(*pskb, hdrlen,
+ (*pskb)->len - hdrlen,
+ 0));
         return 1;
 
  unlock_fail:
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/



This archive was generated by hypermail 2b29 : Thu May 15 2003 - 22:00:28 EST