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cw1200: fix missing unlock on error in cw1200_hw_scan()

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commit 51c8d24101 upstream.

Add the missing unlock before return from function cw1200_hw_scan()
in the error handling case.

Fixes: 4f68ef64cd ("cw1200: Fix concurrency use-after-free bugs in cw1200_hw_scan()")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Acked-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Wei Yongjun
2018-12-22 10:34:54 +00:00
committed by Greg Kroah-Hartman
parent b617f19b88
commit b74475a984
1 changed files with 4 additions and 1 deletions
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5
drivers/net/wireless/st/cw1200/scan.c
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@@ -84,8 +84,11 @@ int cw1200_hw_scan(struct ieee80211_hw *hw,
frame.skb = ieee80211_probereq_get(hw, priv->vif->addr, NULL, 0,
req->ie_len);
if (!frame.skb)
if (!frame.skb) {
mutex_unlock(&priv->conf_mutex);
up(&priv->scan.lock);
return -ENOMEM;
}
if (req->ie_len)
skb_put_data(frame.skb, req->ie, req->ie_len);