From: Ping-Ke Shih <pkshih@xxxxxxxxxxx>
Patch c76ab8e75442 ("rtlwifi: Fill ap_num field by driver") leads to the
following static checker warning:
drivers/net/wireless/realtek/rtlwifi/base.c:1741 rtl_scan_list_expire()
error: dereferencing freed memory 'entry'
Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Fixes: c76ab8e75442 ("rtlwifi: Fill ap_num field by driver")
Cc: Stable <stable@xxxxxxxxxxxxxxx> # 4.12+
Signed-off-by: Ping-Ke Shih <pkshih@xxxxxxxxxxx>
Signed-off-by: Larry Finger <Larry.Finger@xxxxxxxxxxxx>
---
drivers/net/wireless/realtek/rtlwifi/base.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/net/wireless/realtek/rtlwifi/base.c b/drivers/net/wireless/realtek/rtlwifi/base.c
index d7a1e2d2d529..7074aee35a11 100644
--- a/drivers/net/wireless/realtek/rtlwifi/base.c
+++ b/drivers/net/wireless/realtek/rtlwifi/base.c
@@ -1805,13 +1805,13 @@ void rtl_scan_list_expire(struct ieee80211_hw *hw)
if (jiffies_to_msecs(jiffies - entry->age) < 180000)
continue;
+ RT_TRACE(rtlpriv, COMP_SCAN, DBG_LOUD,
+ "BSSID=%pM is expire in scan list (total=%d)\n",
+ entry->bssid, rtlpriv->scan_list.num - 1);
+
list_del(&entry->list);
kfree(entry);
rtlpriv->scan_list.num--;
-
- RT_TRACE(rtlpriv, COMP_SCAN, DBG_LOUD,
- "BSSID=%pM is expire in scan list (total=%d)\n",
- entry->bssid, rtlpriv->scan_list.num);
}
spin_unlock_irqrestore(&rtlpriv->locks.scan_list_lock, flags);
--
2.12.3
