[PATCH] [IPSEC]: Fix __xfrm_find_acq_byseq()

This function, as it's name implies, is supposed to only
return IPSEC objects which are in the XFRM_STATE_ACQ
("acquire") state.  But it returns any object with the
matching sequence number.

This is wrong and confuses IPSEC daemons to no end.

[XFRM]: xfrm_find_acq_byseq should only return XFRM_STATE_ACQ states.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: Chris Wright <chrisw@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

net/xfrm/xfrm_state.c

@@ -609,7 +609,7 @@ static struct xfrm_state *__xfrm_find_acq_byseq(u32 seq)
 
 	for (i = 0; i < XFRM_DST_HSIZE; i++) {
 		list_for_each_entry(x, xfrm_state_bydst+i, bydst) {
-			if (x->km.seq == seq) {
+			if (x->km.seq == seq && x->km.state == XFRM_STATE_ACQ) {
 				xfrm_state_hold(x);
 				return x;
 			}