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mac80211_hwsim: fix possible race condition in usage of info->control.sta & control.vif

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info->control.sta and control.vif may only be dereferenced during the
drv_tx call otherwise could lead to use-after-free bugs.

Signed-off-by: Thomas Huehn <thomas@net.t-labs.tu-berlin.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Thomas Huehn 2012-07-17 22:16:13 +02:00 committed by John W. Linville
parent c297977ec1
commit 4581d91b77
1 changed files with 0 additions and 5 deletions
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5
drivers/net/wireless/mac80211_hwsim.c
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@ -739,11 +739,6 @@ static void mac80211_hwsim_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
txi = IEEE80211_SKB_CB(skb);
if (txi->control.vif)
hwsim_check_magic(txi->control.vif);
if (txi->control.sta)
hwsim_check_sta_magic(txi->control.sta);
ieee80211_tx_info_clear_status(txi);
/* frame was transmitted at most favorable rate at first attempt */