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tcp: len check is unnecessarily devastating, change to WARN_ON 

All callers are prepared for alloc failures anyway, so this error
can safely be boomeranged to the callers domain without super
bad consequences. ...At worst the connection might go into a state
where each RTO tries to (unsuccessfully) re-fragment with such
a mis-sized value and eventually dies.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ilpo Järvinen 2011-04-01 21:47:41 -07:00 committed by David S. Miller
parent 2cab86bee8
commit 2fceec1337
1 changed files with 2 additions and 1 deletions
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3
net/ipv4/tcp_output.c
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@ -1003,7 +1003,8 @@ int tcp_fragment(struct sock *sk, struct sk_buff *skb, u32 len,
int nlen; int nlen;
u8 flags; u8 flags;
BUG_ON(len > skb->len); if (WARN_ON(len > skb->len))
return -EINVAL;
nsize = skb_headlen(skb) - len; nsize = skb_headlen(skb) - len;
if (nsize < 0) if (nsize < 0)