[PATCH 4.4 32/67] rtlwifi: fix memory leak for USB device

From: Greg Kroah-Hartman
Date: Wed Jan 27 2016 - 17:07:57 EST

4.4-stable review patch. If anyone has any objections, please let me know.


From: Peter Wu <peter@xxxxxxxxxxxxx>

commit 17bc55864f81dd730d05f09b1641312a7990d636 upstream.

Free skb for received frames with a wrong checksum. This can happen
pretty rapidly, exhausting all memory.

This fixes a memleak (detected with kmemleak). Originally found while
using monitor mode, but it also appears during managed mode (once the
link is up).

Signed-off-by: Peter Wu <peter@xxxxxxxxxxxxx>
ACKed-by: Larry Finger <Larry.Finger@xxxxxxxxxxxx>
Signed-off-by: Kalle Valo <kvalo@xxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

drivers/net/wireless/realtek/rtlwifi/usb.c | 2 ++
1 file changed, 2 insertions(+)

--- a/drivers/net/wireless/realtek/rtlwifi/usb.c
+++ b/drivers/net/wireless/realtek/rtlwifi/usb.c
@@ -531,6 +531,8 @@ static void _rtl_usb_rx_process_noagg(st
ieee80211_rx(hw, skb);
+ } else {
+ dev_kfree_skb_any(skb);