netdev - [PATCH] af_key: mark policy as dead before destroying

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Message-ID: <20081107024954.GA20157@x200.localdomain>
Date:	Fri, 7 Nov 2008 05:49:54 +0300
From:	Alexey Dobriyan <adobriyan@...il.com>
To:	davem@...emloft.net
Cc:	netdev@...r.kernel.org
Subject: [PATCH] af_key: mark policy as dead before destroying

xfrm_policy_destroy() will oops if not dead policy is passed to it.
On error path in pfkey_compile_policy() exactly this happens.

Oopsable for CAP_NET_ADMIN owners.

Signed-off-by: Alexey Dobriyan <adobriyan@...il.com>
---

 net/key/af_key.c |    1 +
 1 file changed, 1 insertion(+)

--- a/net/key/af_key.c
+++ b/net/key/af_key.c
@@ -3189,6 +3189,7 @@ static struct xfrm_policy *pfkey_compile_policy(struct sock *sk, int opt,
 	return xp;
 
 out:
+	xp->walk.dead = 1;
 	xfrm_policy_destroy(xp);
 	return NULL;
 }
--
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