linux-kernel - Re: [PATCH v1 0/2] usb: gadget: uvc: stability fixes when stopping streams

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Message-ID: <CAMHf4WLeSC9m05XOU54yL=2xUcSqbWP0f7evM0rZRsJ=J-btWw@mail.gmail.com>
Date:   Thu, 14 Sep 2023 16:05:36 -0700
From:   Avichal Rakesh <arakesh@...gle.com>
To:     Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Daniel Scally <dan.scally@...asonboard.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Michael Grzeschik <m.grzeschik@...gutronix.de>
Cc:     linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1 0/2] usb: gadget: uvc: stability fixes when stopping streams

On Mon, Sep 11, 2023 at 9:19 PM Avichal Rakesh <arakesh@...gle.com> wrote:
>
> We have been seeing two main bugs when stopping stream:
> 1. attempting to queue usb_requests on a disabled usb endpoint, and
> 2. use-after-free problems for inflight requests
>
> Avichal Rakesh (2):
>   usb: gadget: uvc: prevent use of disabled endpoint
>   usb: gadget: uvc: prevent de-allocating inflight usb_requests
>
>  drivers/usb/gadget/function/f_uvc.c     | 11 ++++----
>  drivers/usb/gadget/function/f_uvc.h     |  2 +-
>  drivers/usb/gadget/function/uvc.h       |  5 +++-
>  drivers/usb/gadget/function/uvc_v4l2.c  | 21 ++++++++++++---
>  drivers/usb/gadget/function/uvc_video.c | 34 +++++++++++++++++++++++--
>  5 files changed, 60 insertions(+), 13 deletions(-)
>

Bumping this thread up. Laurent, Dan, and Michael could you take a look?

Thank you!
- Avi.