4 files changed, 30 insertions, 18 deletions

diff --git a/include/net/xfrm.h b/include/net/xfrm.h
index 92a1fc46ea59..5a00aa85b756 100644
--- a/include/net/xfrm.h
+++ b/include/net/xfrm.h
@@ -988,8 +988,9 @@ extern int xfrm_policy_walk(u8 type, int (*func)(struct xfrm_policy *, int, int,
 int xfrm_policy_insert(int dir, struct xfrm_policy *policy, int excl);
 struct xfrm_policy *xfrm_policy_bysel_ctx(u8 type, int dir,
                                           struct xfrm_selector *sel,
-                                          struct xfrm_sec_ctx *ctx, int delete);
-struct xfrm_policy *xfrm_policy_byid(u8, int dir, u32 id, int delete);
+                                          struct xfrm_sec_ctx *ctx, int delete,
+                                          int *err);
+struct xfrm_policy *xfrm_policy_byid(u8, int dir, u32 id, int delete, int *err);
 void xfrm_policy_flush(u8 type, struct xfrm_audit *audit_info);
 u32 xfrm_get_acqseq(void);
 void xfrm_alloc_spi(struct xfrm_state *x, __be32 minspi, __be32 maxspi);
diff --git a/net/key/af_key.c b/net/key/af_key.c
index 1c58204d767e..3542435e9d40 100644
--- a/net/key/af_key.c
+++ b/net/key/af_key.c
@@ -2294,14 +2294,12 @@ static int pfkey_spddelete(struct sock *sk, struct sk_buff *skb, struct sadb_msg
         }
 
         xp = xfrm_policy_bysel_ctx(XFRM_POLICY_TYPE_MAIN, pol->sadb_x_policy_dir-1,
-                                   &sel, tmp.security, 1);
+                                   &sel, tmp.security, 1, &err);
         security_xfrm_policy_free(&tmp);
 
         if (xp == NULL)
                 return -ENOENT;
 
-        err = security_xfrm_policy_delete(xp);
-
         xfrm_audit_log(audit_get_loginuid(current->audit_context), 0,
                        AUDIT_MAC_IPSEC_DELSPD, err ? 0 : 1, xp, NULL);
 
@@ -2552,7 +2550,7 @@ static int pfkey_spdget(struct sock *sk, struct sk_buff *skb, struct sadb_msg *h
                 return -EINVAL;
 
         xp = xfrm_policy_byid(XFRM_POLICY_TYPE_MAIN, dir, pol->sadb_x_policy_id,
-                              hdr->sadb_msg_type == SADB_X_SPDDELETE2);
+                              hdr->sadb_msg_type == SADB_X_SPDDELETE2, &err);
         if (xp == NULL)
                 return -ENOENT;
 
diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c
index 946b715db5ec..0c3a70ac5075 100644
--- a/net/xfrm/xfrm_policy.c
+++ b/net/xfrm/xfrm_policy.c
@@ -735,12 +735,14 @@ EXPORT_SYMBOL(xfrm_policy_insert);
 
 struct xfrm_policy *xfrm_policy_bysel_ctx(u8 type, int dir,
                                           struct xfrm_selector *sel,
-                                          struct xfrm_sec_ctx *ctx, int delete)
+                                          struct xfrm_sec_ctx *ctx, int delete,
+                                          int *err)
 {
         struct xfrm_policy *pol, *ret;
         struct hlist_head *chain;
         struct hlist_node *entry;
 
+        *err = 0;
         write_lock_bh(&xfrm_policy_lock);
         chain = policy_hash_bysel(sel, sel->family, dir);
         ret = NULL;
@@ -750,6 +752,11 @@ struct xfrm_policy *xfrm_policy_bysel_ctx(u8 type, int dir,
                     xfrm_sec_ctx_match(ctx, pol->security)) {
                         xfrm_pol_hold(pol);
                         if (delete) {
+                                *err = security_xfrm_policy_delete(pol);
+                                if (*err) {
+                                        write_unlock_bh(&xfrm_policy_lock);
+                                        return pol;
+                                }
                                 hlist_del(&pol->bydst);
                                 hlist_del(&pol->byidx);
                                 xfrm_policy_count[dir]--;
@@ -768,12 +775,14 @@ struct xfrm_policy *xfrm_policy_bysel_ctx(u8 type, int dir,
 }
 EXPORT_SYMBOL(xfrm_policy_bysel_ctx);
 
-struct xfrm_policy *xfrm_policy_byid(u8 type, int dir, u32 id, int delete)
+struct xfrm_policy *xfrm_policy_byid(u8 type, int dir, u32 id, int delete,
+                                     int *err)
 {
         struct xfrm_policy *pol, *ret;
         struct hlist_head *chain;
         struct hlist_node *entry;
 
+        *err = 0;
         write_lock_bh(&xfrm_policy_lock);
         chain = xfrm_policy_byidx + idx_hash(id);
         ret = NULL;
@@ -781,6 +790,11 @@ struct xfrm_policy *xfrm_policy_byid(u8 type, int dir, u32 id, int delete)
                 if (pol->type == type && pol->index == id) {
                         xfrm_pol_hold(pol);
                         if (delete) {
+                                *err = security_xfrm_policy_delete(pol);
+                                if (*err) {
+                                        write_unlock_bh(&xfrm_policy_lock);
+                                        return pol;
+                                }
                                 hlist_del(&pol->bydst);
                                 hlist_del(&pol->byidx);
                                 xfrm_policy_count[dir]--;
diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c
index 956cfe0ff7f8..30c244bbd8ac 100644
--- a/net/xfrm/xfrm_user.c
+++ b/net/xfrm/xfrm_user.c
@@ -1254,7 +1254,7 @@ static int xfrm_get_policy(struct sk_buff *skb, struct nlmsghdr *nlh,
                 return err;
 
         if (p->index)
-                xp = xfrm_policy_byid(type, p->dir, p->index, delete);
+                xp = xfrm_policy_byid(type, p->dir, p->index, delete, &err);
         else {
                 struct rtattr *rt = xfrma[XFRMA_SEC_CTX-1];
                 struct xfrm_policy tmp;
@@ -1270,7 +1270,8 @@ static int xfrm_get_policy(struct sk_buff *skb, struct nlmsghdr *nlh,
                         if ((err = security_xfrm_policy_alloc(&tmp, uctx)))
                                 return err;
                 }
-                xp = xfrm_policy_bysel_ctx(type, p->dir, &p->sel, tmp.security, delete);
+                xp = xfrm_policy_bysel_ctx(type, p->dir, &p->sel, tmp.security,
+                                           delete, &err);
                 security_xfrm_policy_free(&tmp);
         }
         if (xp == NULL)
@@ -1288,8 +1289,6 @@ static int xfrm_get_policy(struct sk_buff *skb, struct nlmsghdr *nlh,
                                               MSG_DONTWAIT);
                 }
         } else {
-                err = security_xfrm_policy_delete(xp);
-
                 xfrm_audit_log(NETLINK_CB(skb).loginuid, NETLINK_CB(skb).sid,
                                AUDIT_MAC_IPSEC_DELSPD, err ? 0 : 1, xp, NULL);
 
@@ -1303,9 +1302,8 @@ static int xfrm_get_policy(struct sk_buff *skb, struct nlmsghdr *nlh,
                 km_policy_notify(xp, p->dir, &c);
         }
 
-        xfrm_pol_put(xp);
-
 out:
+        xfrm_pol_put(xp);
         return err;
 }
 
@@ -1502,7 +1500,7 @@ static int xfrm_add_pol_expire(struct sk_buff *skb, struct nlmsghdr *nlh,
                 return err;
 
         if (p->index)
-                xp = xfrm_policy_byid(type, p->dir, p->index, 0);
+                xp = xfrm_policy_byid(type, p->dir, p->index, 0, &err);
         else {
                 struct rtattr *rt = xfrma[XFRMA_SEC_CTX-1];
                 struct xfrm_policy tmp;
@@ -1518,13 +1516,14 @@ static int xfrm_add_pol_expire(struct sk_buff *skb, struct nlmsghdr *nlh,
                         if ((err = security_xfrm_policy_alloc(&tmp, uctx)))
                                 return err;
                 }
-                xp = xfrm_policy_bysel_ctx(type, p->dir, &p->sel, tmp.security, 0);
+                xp = xfrm_policy_bysel_ctx(type, p->dir, &p->sel, tmp.security,
+                                           0, &err);
                 security_xfrm_policy_free(&tmp);
         }
 
         if (xp == NULL)
-                return err;
-                                                                                        read_lock(&xp->lock);
+                return -ENOENT;
+        read_lock(&xp->lock);
         if (xp->dead) {
                 read_unlock(&xp->lock);
                 goto out;