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Date:   Tue, 27 Oct 2020 11:16:20 +0800
From:   WeitaoWangoc <>
To:     <>, <>,
        <>, <>,
        <>, <>,
CC:     <>, <>,
        <>, <>, <>
Subject: [PATCH] rtlwifi: Fix non-canonical address access issues

During realtek USB wireless NIC initialization, it's unexpected
disconnection will cause urb sumbmit fail. On the one hand,
_rtl_usb_cleanup_rx will be called to clean up rx stuff, especially for
rtl_wq. On the other hand, disconnection will cause rtl_usb_disconnect
and _rtl_usb_cleanup_rx to be called. So, rtl_wq will be flush/destroy
twice, which will cause non-canonical address 0xdead000000000122 access
and general protection fault.

Fixed this issue by remove _rtl_usb_cleanup_rx when urb sumbmit fail.

Signed-off-by: WeitaoWangoc <>
 drivers/net/wireless/realtek/rtlwifi/usb.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/net/wireless/realtek/rtlwifi/usb.c b/drivers/net/wireless/realtek/rtlwifi/usb.c
index 06e073d..d62b87f 100644
--- a/drivers/net/wireless/realtek/rtlwifi/usb.c
+++ b/drivers/net/wireless/realtek/rtlwifi/usb.c
@@ -731,7 +731,6 @@ static int _rtl_usb_receive(struct ieee80211_hw *hw)
-	_rtl_usb_cleanup_rx(hw);
 	return err;

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