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[NETFILTER]: Fix oops in conntrack event cache 

ip_ct_refresh_acct() can be called without a valid "skb" pointer.
This used to work, since ct_add_counters() deals with that fact.
However, the recently-added event cache doesn't handle this at all.

This patch is a quick fix that is supposed to be replaced soon by a cleaner
solution during the pending redesign of the event cache.

Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Harald Welte 2005-09-16 17:00:38 -07:00 committed by David S. Miller
parent 136e92bbec
commit a8f39143ac
1 changed files with 4 additions and 1 deletions
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5
net/ipv4/netfilter/ip_conntrack_core.c
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@ -1143,7 +1143,10 @@ void ip_ct_refresh_acct(struct ip_conntrack *ct,
if (del_timer(&ct->timeout)) {
ct->timeout.expires = jiffies + extra_jiffies;
add_timer(&ct->timeout);
ip_conntrack_event_cache(IPCT_REFRESH, skb);
/* FIXME: We loose some REFRESH events if this function
* is called without an skb. I'll fix this later -HW */
if (skb)
ip_conntrack_event_cache(IPCT_REFRESH, skb);
}
ct_add_counters(ct, ctinfo, skb);
write_unlock_bh(&ip_conntrack_lock);