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[TCP]: Add code to help track down "BUG at net/ipv4/tcp_output.c:438!" 

This is the second report of this bug.  Unfortunately the first
reporter hasn't been able to reproduce it since to provide more
debugging info.

So let's apply this patch for 2.6.14 to

1) Make this non-fatal.
2) Provide the info we need to track it down.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
hifive-unleashed-5.1
Herbert Xu 2005-10-12 15:59:39 -07:00 committed by David S. Miller
parent afb997c616
commit 9ff5c59ce2
1 changed files with 8 additions and 1 deletions
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9
net/ipv4/tcp_output.c
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@ -435,7 +435,14 @@ int tcp_fragment(struct sock *sk, struct sk_buff *skb, u32 len, unsigned int mss
int nsize, old_factor;
u16 flags;
BUG_ON(len >= skb->len);
if (unlikely(len >= skb->len)) {
printk(KERN_DEBUG "TCP: seg_size=%u, mss=%u, seq=%u, "
"end_seq=%u, skb->len=%u.\n", len, mss_now,
TCP_SKB_CB(skb)->seq, TCP_SKB_CB(skb)->end_seq,
skb->len);
WARN_ON(1);
return 0;
}
nsize = skb_headlen(skb) - len;
if (nsize < 0)