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Commit 21f930e4 authored by Patrick McHardy's avatar Patrick McHardy Committed by David S. Miller
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[NETFILTER]: Wait until all references to ip_conntrack_untracked are dropped on unload 



Fixes a crash when unloading ip_conntrack.

Signed-off-by: default avatarPatrick McHardy <kaber@trash.net>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent d04b4f8c

net/ipv4/netfilter/ip_conntrack_core.c

+3 −0
Original line number Diff line number Diff line
@@ -1107,6 +1107,9 @@ void ip_conntrack_cleanup(void) 
		schedule();

		goto i_see_dead_people;

	}

	/* wait until all references to ip_conntrack_untracked are dropped */

	while (atomic_read(&ip_conntrack_untracked.ct_general.use) > 1)

		schedule();



	kmem_cache_destroy(ip_conntrack_cachep);

	kmem_cache_destroy(ip_conntrack_expect_cachep);