diff options
| author |   Wei Yongjun <yongjun_wei@trendmicro.com.cn> | 2012-10-08 08:42:58 +0800 |
|---|---|---|
| committer |   John W. Linville <linville@tuxdriver.com> | 2012-10-08 15:06:04 -0400 |
| commit | 9c371f997353385dfa2f7a8004ce13397e071a25 (patch) | |
| tree | c2f28b4a17d0f1291801d89ff0435f51abcd4076 /drivers/net/wireless/ath/ath5k/base.c | |
| parent | mwifiex: update cfg80211 with correct reason code when connection is lost (diff) | |
| download | linux-dev-9c371f997353385dfa2f7a8004ce13397e071a25.tar.xz linux-dev-9c371f997353385dfa2f7a8004ce13397e071a25.zip | |
ath5k: fix potential NULL pointer dereference in ath5k_beacon_update()
The dereference should be moved below the NULL test.
dpatch engine is used to auto generate this patch.
(https://github.com/weiyj/dpatch)
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/ath/ath5k/base.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath5k/base.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/net/wireless/ath/ath5k/base.c b/drivers/net/wireless/ath/ath5k/base.c index 9fd6d9a9942e..9f31cfa56cc0 100644 --- a/drivers/net/wireless/ath/ath5k/base.c +++ b/drivers/net/wireless/ath/ath5k/base.c @@ -1804,7 +1804,7 @@ ath5k_beacon_update(struct ieee80211_hw *hw, struct ieee80211_vif *vif) { int ret; struct ath5k_hw *ah = hw->priv; - struct ath5k_vif *avf = (void *)vif->drv_priv; + struct ath5k_vif *avf; struct sk_buff *skb; if (WARN_ON(!vif)) { @@ -1819,6 +1819,7 @@ ath5k_beacon_update(struct ieee80211_hw *hw, struct ieee80211_vif *vif) goto out; } + avf = (void *)vif->drv_priv; ath5k_txbuf_free_skb(ah, avf->bbuf); avf->bbuf->skb = skb; ret = ath5k_beacon_setup(ah, avf->bbuf); |