| From | Greg Kroah-Hartman <> | Subject | [ 17/50] ath9k: fix key allocation error handling for powersave keys | Date | Fri, 17 May 2013 14:46:52 -0700 |
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3.4-stable review patch. If anyone has any objections, please let me know.
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From: Felix Fietkau <nbd@openwrt.org>
commit 4ef69d0394cba8caa9f75d3f2e53429bfb8b3045 upstream.
If no keycache slots are available, ath_key_config can return -ENOSPC. If the key index is not checked for errors, it can lead to logspam that looks like this: "ath: wiphy0: keyreset: keycache entry 228 out of range" This can cause follow-up errors if the invalid keycache index gets used for tx.
Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- drivers/net/wireless/ath/ath9k/main.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)
--- a/drivers/net/wireless/ath/ath9k/main.c +++ b/drivers/net/wireless/ath/ath9k/main.c @@ -1711,6 +1711,7 @@ static int ath9k_sta_add(struct ieee8021 struct ath_common *common = ath9k_hw_common(sc->sc_ah); struct ath_node *an = (struct ath_node *) sta->drv_priv; struct ieee80211_key_conf ps_key = { }; + int key; ath_node_attach(sc, sta, vif); @@ -1718,7 +1719,9 @@ static int ath9k_sta_add(struct ieee8021 vif->type != NL80211_IFTYPE_AP_VLAN) return 0; - an->ps_key = ath_key_config(common, vif, sta, &ps_key); + key = ath_key_config(common, vif, sta, &ps_key); + if (key > 0) + an->ps_key = key; return 0; } @@ -1735,6 +1738,7 @@ static void ath9k_del_ps_key(struct ath_ return; ath_key_delete(common, &ps_key); + an->ps_key = 0; } static int ath9k_sta_remove(struct ieee80211_hw *hw,
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