ip_conntrack_event(IPCT_DESTROY, ct); 
static void death_by_timeout(unsigned long ul_conntrack){	struct ip_conntrack *ct = (void *)ul_conntrack;	ip_conntrack_event(IPCT_DESTROY, ct);	write_lock_bh(&ip_conntrack_lock);	/* Inside lock so preempt is disabled on module removal path.	 * Otherwise we can get spurious warnings. */	CONNTRACK_STAT_INC(delete_list);	clean_from_lists(ct);	write_unlock_bh(&ip_conntrack_lock);	ip_conntrack_put(ct);}
4520	/local/tlutelli/issta_data/temp/c/2005_temp/2005/4520/14a50bbaa51202b676a95e9b41bc5ed6c77aa9cc/ip_conntrack_core.c/clean/net/ipv4/netfilter/ip_conntrack_core.c