[PATCH 4.4 072/118] ath9k: fix using sta->drv_priv before initializing it
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: 2016-09-22 19:04:24
Also in:
lkml
4.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: Felix Fietkau <nbd@nbd.name>
commit 7711aaf08ad3fc4d0e937eec1de0a63620444ce7 upstream.
A station pointer can be passed to the driver on tx, before it has been
marked as associated. Since ath9k_sta_state was initializing the entry
too late, it resulted in some spurious crashes.
Fixes: df3c6eb34da5 ("ath9k: Use sta_state() callback")
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Kalle Valo <redacted>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/wireless/ath/ath9k/main.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c@@ -1550,13 +1550,13 @@ static int ath9k_sta_state(struct ieee80 struct ath_common *common = ath9k_hw_common(sc->sc_ah); int ret = 0; - if (old_state == IEEE80211_STA_AUTH && - new_state == IEEE80211_STA_ASSOC) { + if (old_state == IEEE80211_STA_NOTEXIST && + new_state == IEEE80211_STA_NONE) { ret = ath9k_sta_add(hw, vif, sta); ath_dbg(common, CONFIG, "Add station: %pM\n", sta->addr); - } else if (old_state == IEEE80211_STA_ASSOC && - new_state == IEEE80211_STA_AUTH) { + } else if (old_state == IEEE80211_STA_NONE && + new_state == IEEE80211_STA_NOTEXIST) { ret = ath9k_sta_remove(hw, vif, sta); ath_dbg(common, CONFIG, "Remove station: %pM\n", sta->addr);