netdev - [PATCH ipsec net] xfrm: put policies when reusing pcpu xdst entry

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Message-Id: <20171211172309.29427-1-fw@strlen.de>
Date:   Mon, 11 Dec 2017 18:23:09 +0100
From:   Florian Westphal <fw@...len.de>
To:     <netdev@...r.kernel.org>
Cc:     Florian Westphal <fw@...len.de>
Subject: [PATCH ipsec net] xfrm: put policies when reusing pcpu xdst entry

We need to put the policies when re-using the pcpu xdst entry, else
this leaks the reference.

Fixes: ec30d78c14a813db39a647b6a348b428 ("xfrm: add xdst pcpu cache")
Signed-off-by: Florian Westphal <fw@...len.de>
---
 net/xfrm/xfrm_policy.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c
index 9542975eb2f9..88143a480ec9 100644
--- a/net/xfrm/xfrm_policy.c
+++ b/net/xfrm/xfrm_policy.c
@@ -1833,6 +1833,7 @@ xfrm_resolve_and_create_bundle(struct xfrm_policy **pols, int num_pols,
 		   sizeof(struct xfrm_policy *) * num_pols) == 0 &&
 	    xfrm_xdst_can_reuse(xdst, xfrm, err)) {
 		dst_hold(&xdst->u.dst);
+		xfrm_pols_put(pols, num_pols);
 		while (err > 0)
 			xfrm_state_put(xfrm[--err]);
 		return xdst;
-- 
2.13.6