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Date:	Mon,  7 Dec 2015 01:07:31 +0100
From:	Peter Wu <>
To:	Larry Finger <>,
	Chaoming Li <>,
	Kalle Valo <>,,,
Subject: [PATCH v2] rtlwifi: fix memory leak for USB device

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 <>
 v2: updated commit message based on Larry's feedback

Tested with v4.3, rebased on v4.4-rc3 (changed paths). The bug goes back
to its introduction in the v2.6.x kernel.
 drivers/net/wireless/realtek/rtlwifi/usb.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/wireless/realtek/rtlwifi/usb.c b/drivers/net/wireless/realtek/rtlwifi/usb.c
index 2721cf8..aac1ed3 100644
--- 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(struct ieee80211_hw *hw,
 			ieee80211_rx(hw, skb);
+	} else {
+		dev_kfree_skb_any(skb);

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