2 files changed, 4 insertions, 0 deletions

diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 466859b285e1..c75b960c8ac8 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -1669,6 +1669,8 @@ void ieee80211_restart_hw(struct ieee80211_hw *hw);
  * to this function and ieee80211_rx_irqsafe() may not be mixed for a
  * single hardware.
  *
+ * Note that right now, this function must be called with softirqs disabled.
+ *
  * @hw: the hardware this frame came in on
  * @skb: the buffer to receive, owned by mac80211 after this call
  */
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 865fbc09be1a..7170bf4565a8 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -2453,6 +2453,8 @@ void ieee80211_rx(struct ieee80211_hw *hw, struct sk_buff *skb)
         struct ieee80211_supported_band *sband;
         struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(skb);
 
+        WARN_ON_ONCE(softirq_count() == 0);
+
         if (WARN_ON(status->band < 0 ||
                     status->band >= IEEE80211_NUM_BANDS))
                 goto drop;