[PATCH 5.6 12/23] staging: wlan-ng: fix ODEBUG bug in prism2sta_disconnect_usb

Greg Kroah-Hartman
2020-03-31T09:01:33Z

From: Qiujun Huang <hqjagain@gmail.com>

commit a1f165a6b738f0c9d744bad4af7a53909278f5fc upstream.

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

Reported-by: syzbot+6d2e7f6fa90e27be9d62@syzkaller.appspotmail.com
Signed-off-by: Qiujun Huang <hqjagain@gmail.com>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/1585120006-30042-1-git-send-email-hqjagain@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/staging/wlan-ng/prism2usb.c | 1 +
1 file changed, 1 insertion(+)

--- a/drivers/staging/wlan-ng/prism2usb.c
+++ b/drivers/staging/wlan-ng/prism2usb.c
@@ -180,6 +180,7 @@ static void prism2sta_disconnect_usb(str

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