From 89f44d8c25bb21f167d7d124c6b83dd494f948af Mon Sep 17 00:00:00 2001 From: Amit Khatri Date: Mon, 30 Nov 2015 12:46:52 +0530 Subject: [PATCH] mac80211_hwsim: check txrate for NULL If the rate control algorithm messed up then the txrate pointer here could be NULL - WARN and drop the packet from monitoring. Signed-off-by: Amit Khatri Signed-off-by: Rahul Jain [rewrite commit message, add warning] Signed-off-by: Johannes Berg --- drivers/net/wireless/mac80211_hwsim.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/net/wireless/mac80211_hwsim.c b/drivers/net/wireless/mac80211_hwsim.c index 194264c1ee1f..297b192b9e13 100644 --- a/drivers/net/wireless/mac80211_hwsim.c +++ b/drivers/net/wireless/mac80211_hwsim.c @@ -814,6 +814,9 @@ static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw, struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb); struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info); + if (WARN_ON(!txrate)) + return; + if (!netif_running(hwsim_mon)) return; -- 2.20.1