netdev - [PATCH] xfrm: Fix double dst_release() in xfrm

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Message-Id: <1270729773-1758-1-git-send-email-broonie@opensource.wolfsonmicro.com>
Date:	Thu,  8 Apr 2010 13:29:33 +0100
From:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
To:	"David S. Miller" <davem@...emloft.net>
Cc:	Timo Teräs <timo.teras@....fi>,
	netdev@...r.kernel.org,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>
Subject: [PATCH] xfrm: Fix double dst_release() in xfrm_lookup() -EREMOTE case

Commit 80c802 ("xfrm: cache bundles instead of policies for outgoing
flows") changed __xfrm_policy() to call dst_release() when returning
-EREMOTE. In the case where this is called from xfrm_lookup() a double
call to dst_release() would result due to the existing dst_release()
there. Remove the dst_release() in xfrm_lookup().

Signed-off-by: Mark Brown <broonie@...nsource.wolfsonmicro.com>
---

I'm not sure if this is correct or not - there may a reference been
taken earlier in __xfrm_lookup() that's being dropped but I didn't spot
it.

 net/xfrm/xfrm_policy.c |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)

diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c
index 7430ac2..f133036 100644
--- a/net/xfrm/xfrm_policy.c
+++ b/net/xfrm/xfrm_policy.c
@@ -1881,7 +1881,6 @@ int xfrm_lookup(struct net *net, struct dst_entry **dst_p, struct flowi *fl,
 	int err = __xfrm_lookup(net, dst_p, fl, sk, flags);
 
 	if (err == -EREMOTE) {
-		dst_release(*dst_p);
 		*dst_p = NULL;
 		err = -EAGAIN;
 	}
-- 
1.7.0.3

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