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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: ec30d78c14 ("xfrm: add xdst pcpu cache")
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
This commit is contained in:
Florian Westphal 2017-12-11 18:23:09 +01:00 committed by Steffen Klassert
parent 732706afe1
commit d2950278d2
1 changed files with 1 additions and 0 deletions
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net/xfrm/xfrm_policy.c
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@ -1839,6 +1839,7 @@ xfrm_resolve_and_create_bundle(struct xfrm_policy **pols, int num_pols,
sizeof(struct xfrm_policy *) * num_pols) == 0 && sizeof(struct xfrm_policy *) * num_pols) == 0 &&
xfrm_xdst_can_reuse(xdst, xfrm, err)) { xfrm_xdst_can_reuse(xdst, xfrm, err)) {
dst_hold(&xdst->u.dst); dst_hold(&xdst->u.dst);
xfrm_pols_put(pols, num_pols);
while (err > 0) while (err > 0)
xfrm_state_put(xfrm[--err]); xfrm_state_put(xfrm[--err]);
return xdst; return xdst;