linux-kernel - [PATCH] staging: wlan-ng: fix ODEBUG bug in prism2sta_disconnect

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Message-Id: <1585120006-30042-1-git-send-email-hqjagain@gmail.com>
Date:   Wed, 25 Mar 2020 15:06:46 +0800
From:   Qiujun Huang <hqjagain@...il.com>
To:     gregkh@...uxfoundation.org, osdevtc@...il.com
Cc:     devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org,
        Qiujun Huang <hqjagain@...il.com>
Subject: [PATCH] staging: wlan-ng: fix ODEBUG bug in prism2sta_disconnect_usb

We should cancel hw->usb_work before kfree(hw).

Reported-by: syzbot+6d2e7f6fa90e27be9d62@...kaller.appspotmail.com
Signed-off-by: Qiujun Huang <hqjagain@...il.com>
---
 drivers/staging/wlan-ng/prism2usb.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/staging/wlan-ng/prism2usb.c b/drivers/staging/wlan-ng/prism2usb.c
index 352556f..4689b21 100644
--- a/drivers/staging/wlan-ng/prism2usb.c
+++ b/drivers/staging/wlan-ng/prism2usb.c
@@ -180,6 +180,7 @@ static void prism2sta_disconnect_usb(struct usb_interface *interface)
 
 		cancel_work_sync(&hw->link_bh);
 		cancel_work_sync(&hw->commsqual_bh);
+		cancel_work_sync(&hw->usb_work);
 
 		/* Now we complete any outstanding commands
 		 * and tell everyone who is waiting for their
-- 
1.8.3.1