Hi Greg, I want to merge this change into v6.1.52 stable kernel version. I have added these details in my patch subject message. Sorry for inconvenience. Thanks & Regards, Deepak -----Original Message----- From: Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx> Sent: Thursday, September 7, 2023 3:47 PM To: Deepak Rathore -X (deeratho - E-INFO CHIPS INC at Cisco) <deeratho@xxxxxxxxx> Cc: stable@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx Subject: Re: [v6.1.52][PATCH] Bluetooth: btsdio: fix use after free bug in btsdio_remove due to race condition On Wed, Sep 06, 2023 at 05:45:25PM +0530, Deepak Rathore wrote: > From: Zheng Wang <zyytlz.wz@xxxxxxx> > > [ Upstream commit 73f7b171b7c09139eb3c6a5677c200dc1be5f318 ] > > In btsdio_probe, the data->work is bound with btsdio_work. It will be > started in btsdio_send_frame. > > If the btsdio_remove runs with a unfinished work, there may be a race > condition that hdev is freed but used in btsdio_work. Fix it by > canceling the work before do cleanup in btsdio_remove. > > Signed-off-by: Zheng Wang <zyytlz.wz@xxxxxxx> > Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@xxxxxxxxx> > Signed-off-by: Deepak Rathore <deeratho@xxxxxxxxx> > What tree(s) are you wanting this applied to? thanks, greg k-h
