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Diffstat (limited to 'net/xfrm/xfrm_policy.c')
-rw-r--r--net/xfrm/xfrm_policy.c18
1 files changed, 15 insertions, 3 deletions
diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c
index 4bf27d901333..a7ec5a8a2380 100644
--- a/net/xfrm/xfrm_policy.c
+++ b/net/xfrm/xfrm_policy.c
@@ -1594,8 +1594,8 @@ xfrm_resolve_and_create_bundle(struct xfrm_policy **pols, int num_pols,
/* Try to instantiate a bundle */
err = xfrm_tmpl_resolve(pols, num_pols, fl, xfrm, family);
- if (err < 0) {
- if (err != -EAGAIN)
+ if (err <= 0) {
+ if (err != 0 && err != -EAGAIN)
XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTPOLERROR);
return ERR_PTR(err);
}
@@ -1678,6 +1678,13 @@ xfrm_bundle_lookup(struct net *net, struct flowi *fl, u16 family, u8 dir,
goto make_dummy_bundle;
dst_hold(&xdst->u.dst);
return oldflo;
+ } else if (new_xdst == NULL) {
+ num_xfrms = 0;
+ if (oldflo == NULL)
+ goto make_dummy_bundle;
+ xdst->num_xfrms = 0;
+ dst_hold(&xdst->u.dst);
+ return oldflo;
}
/* Kill the previous bundle */
@@ -1760,6 +1767,10 @@ restart:
xfrm_pols_put(pols, num_pols);
err = PTR_ERR(xdst);
goto dropdst;
+ } else if (xdst == NULL) {
+ num_xfrms = 0;
+ drop_pols = num_pols;
+ goto no_transform;
}
spin_lock_bh(&xfrm_policy_sk_bundle_lock);
@@ -2300,7 +2311,8 @@ int xfrm_bundle_ok(struct xfrm_policy *pol, struct xfrm_dst *first,
return 0;
if (xdst->xfrm_genid != dst->xfrm->genid)
return 0;
- if (xdst->policy_genid != atomic_read(&xdst->pols[0]->genid))
+ if (xdst->num_pols > 0 &&
+ xdst->policy_genid != atomic_read(&xdst->pols[0]->genid))
return 0;
if (strict && fl &&