1 files changed, 25 insertions, 2 deletions

diff --git a/net/mac80211/work.c b/net/mac80211/work.c
index 4c7de72c27e7..ad0bf5828140 100644
--- a/net/mac80211/work.c
+++ b/net/mac80211/work.c
@@ -32,6 +32,7 @@
 #define IEEE80211_MAX_PROBE_TRIES 5
 
 enum work_action {
+        WORK_ACT_MISMATCH,
         WORK_ACT_NONE,
         WORK_ACT_TIMEOUT,
         WORK_ACT_DONE,
@@ -584,7 +585,7 @@ ieee80211_rx_mgmt_auth(struct ieee80211_work *wk,
         u16 auth_alg, auth_transaction, status_code;
 
         if (wk->type != IEEE80211_WORK_AUTH)
-                return WORK_ACT_NONE;
+                return WORK_ACT_MISMATCH;
 
         if (len < 24 + 6)
                 return WORK_ACT_NONE;
@@ -635,6 +636,9 @@ ieee80211_rx_mgmt_assoc_resp(struct ieee80211_work *wk,
         struct ieee802_11_elems elems;
         u8 *pos;
 
+        if (wk->type != IEEE80211_WORK_ASSOC)
+                return WORK_ACT_MISMATCH;
+
         /*
          * AssocResp and ReassocResp have identical structure, so process both
          * of them in this function.
@@ -690,6 +694,12 @@ ieee80211_rx_mgmt_probe_resp(struct ieee80211_work *wk,
 
         ASSERT_WORK_MTX(local);
 
+        if (wk->type != IEEE80211_WORK_DIRECT_PROBE)
+                return WORK_ACT_MISMATCH;
+
+        if (len < 24 + 12)
+                return WORK_ACT_NONE;
+
         baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt;
         if (baselen > len)
                 return WORK_ACT_NONE;
@@ -704,7 +714,7 @@ static void ieee80211_work_rx_queued_mgmt(struct ieee80211_local *local,
         struct ieee80211_rx_status *rx_status;
         struct ieee80211_mgmt *mgmt;
         struct ieee80211_work *wk;
-        enum work_action rma = WORK_ACT_NONE;
+        enum work_action rma;
         u16 fc;
 
         rx_status = (struct ieee80211_rx_status *) skb->cb;
@@ -751,7 +761,17 @@ static void ieee80211_work_rx_queued_mgmt(struct ieee80211_local *local,
                         break;
                 default:
                         WARN_ON(1);
+                        rma = WORK_ACT_NONE;
                 }
+
+                /*
+                 * We've either received an unexpected frame, or we have
+                 * multiple work items and need to match the frame to the
+                 * right one.
+                 */
+                if (rma == WORK_ACT_MISMATCH)
+                        continue;
+
                 /*
                  * We've processed this frame for that work, so it can't
                  * belong to another work struct.
@@ -761,6 +781,9 @@ static void ieee80211_work_rx_queued_mgmt(struct ieee80211_local *local,
         }
 
         switch (rma) {
+        case WORK_ACT_MISMATCH:
+                /* ignore this unmatched frame */
+                break;
         case WORK_ACT_NONE:
                 break;
         case WORK_ACT_DONE: