From: Sean Young <sean@mess.org>
To: Moksh Panicker <mokshpanicker.7@gmail.com>
Cc: mchehab@kernel.org, linux-media@vger.kernel.org,
linux-kernel@vger.kernel.org, skhan@linuxfoundation.org,
syzbot+2599e08a22e4565ea9f9@syzkaller.appspot.com
Subject: Re: [PATCH] media: rc: igorplugusb: Fix wrong pointer passed to usb_fill_control_urb()
Date: Wed, 17 Jun 2026 10:03:42 +0100 [thread overview]
Message-ID: <ajJi7gOLB610UYMR@extorris.mess.org> (raw)
In-Reply-To: <20260616214334.36525-1-mokshpanicker.7@gmail.com>
On Tue, Jun 16, 2026 at 09:43:34PM +0000, Moksh Panicker wrote:
> ir->request is already a pointer to struct usb_ctrlrequest, so passing
> &ir->request passes the address of the pointer rather than the pointer
> itself. This causes usb_submit_urb() to read garbage as the URB setup
> packet, resulting in a direction mismatch warning:
>
> usb 1-1: BOGUS control dir, pipe doesn't match bRequestType
>
> Fix this by passing ir->request directly instead of &ir->request.
Already fixed and merged upstream, see commit
171022c7d594c133a45f92357a2a91475edabe20.
Thanks,
Sean
>
> Reported-by: syzbot+2599e08a22e4565ea9f9@syzkaller.appspot.com
> Closes: https://syzkaller.appspot.com/bug?extid=2599e08a22e4565ea9f9
> Signed-off-by: Moksh Panicker <mokshpanicker.7@gmail.com>
> ---
> drivers/media/rc/igorplugusb.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/media/rc/igorplugusb.c b/drivers/media/rc/igorplugusb.c
> index 3e10f6fe8..b5117ee9f 100644
> --- a/drivers/media/rc/igorplugusb.c
> +++ b/drivers/media/rc/igorplugusb.c
> @@ -184,7 +184,7 @@ static int igorplugusb_probe(struct usb_interface *intf,
> if (!ir->buf_in)
> goto fail;
> usb_fill_control_urb(ir->urb, udev,
> - usb_rcvctrlpipe(udev, 0), (uint8_t *)&ir->request,
> + usb_rcvctrlpipe(udev, 0), (uint8_t *)ir->request,
> ir->buf_in, MAX_PACKET, igorplugusb_callback, ir);
>
> usb_make_path(udev, ir->phys, sizeof(ir->phys));
> --
> 2.34.1
>
prev parent reply other threads:[~2026-06-17 9:03 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-16 21:43 [PATCH] media: rc: igorplugusb: Fix wrong pointer passed to usb_fill_control_urb() Moksh Panicker
2026-06-17 9:03 ` Sean Young [this message]
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