linux-kernel - Re: [PATCH v1 0/3] usb: gadget: uvc: stability fixes on STREAMOFF.

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Date:   Thu, 5 Oct 2023 09:11:14 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Avichal Rakesh <arakesh@...gle.com>
Cc:     Michael Grzeschik <mgr@...gutronix.de>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Daniel Scally <dan.scally@...asonboard.com>,
        jchowdhary@...gle.com, etalvala@...gle.com,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1 0/3] usb: gadget: uvc: stability fixes on STREAMOFF.

On Tue, Oct 03, 2023 at 04:16:00PM -0700, Avichal Rakesh wrote:
> Thank you for testing the patch, Michael!
> 
> On 10/3/23 04:09, Michael Grzeschik wrote:
> > Hi
> > 
> > On Sat, Sep 30, 2023 at 11:48:18AM -0700, Avichal Rakesh wrote:
> >> We have been seeing two main stability issues that uvc gadget driver
> >> runs into when stopping streams:
> >> 1. Attempting to queue usb_requests to a disabled usb_ep
> >> 2. use-after-free issue for inflight usb_requests
> >>
> >> The three patches below fix the two issues above. Patch 1/3 fixes the
> >> first issue, and Patch 2/3 and 3/3 fix the second issue.
> >>
> >> Avichal Rakesh (3):
> >>  usb: gadget: uvc: prevent use of disabled endpoint
> >>  usb: gadget: uvc: Allocate uvc_requests one at a time
> >>  usb: gadget: uvc: Fix use-after-free for 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       |   6 +-
> >> drivers/usb/gadget/function/uvc_v4l2.c  |  21 ++-
> >> drivers/usb/gadget/function/uvc_video.c | 189 +++++++++++++++++-------
> >> 5 files changed, 164 insertions(+), 65 deletions(-)
> > 
> > These patches are not applying on gregkh/usb-testing since
> > Greg did take my patches first. I have already rebased them.
> 
> Ah, I didn't realize Greg had picked up your changes in his tree.
> Rebased the patches in V2.

The "v2" series here is almost impossible to follow, sorry.

Please send it as a new thread, not as responses to the individual
commits, how am I supposed to pick them up that way?

And make it v3 please.

thanks,

greg k-h