mac80211: fix crash if bitrate calculation goes wrong

[GitHub/mt8127/android_kernel_alcatel_ttab.git] / net / mac80211 / util.c

diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 72e6292955bb9eb3b896088d3dc756771e1ed3b4..5db8eb5d56cf9ed24061840ab3a0349a297d6db0 100644 (file)
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -2174,6 +2174,10 @@ u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
        }
 
        rate = cfg80211_calculate_bitrate(&ri);
+       if (WARN_ONCE(!rate,
+                     "Invalid bitrate: flags=0x%x, idx=%d, vht_nss=%d\n",
+                     status->flag, status->rate_idx, status->vht_nss))
+               return 0;
 
        /* rewind from end of MPDU */
        if (status->flag & RX_FLAG_MACTIME_END)