linux-kernel - Re: [syzbot] [fbdev?] [usb?] WARNING in dlfb_submit_urb/usb_submit

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Message-ID: <eff05b97-6cf0-7688-15cb-08b5b4d9276f@gmx.de>
Date:   Fri, 19 May 2023 20:40:48 +0200
From:   Helge Deller <deller@....de>
To:     Alan Stern <stern@...land.harvard.edu>
Cc:     linux-kernel@...r.kernel.org, linux-fbdev@...r.kernel.org,
        dri-devel@...ts.freedesktop.org,
        syzbot <syzbot+0e22d63dcebb802b9bc8@...kaller.appspotmail.com>,
        bernie@...gable.com, linux-usb@...r.kernel.org,
        syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [fbdev?] [usb?] WARNING in
 dlfb_submit_urb/usb_submit_urb (2)

On 5/19/23 17:42, Alan Stern wrote:
> On Fri, May 19, 2023 at 12:38:15PM +0200, Helge Deller wrote:
>> Patch looks good and survived the test.
>>
>> Will you send a proper patch to the fbdev mailing list, so that I can
>> include it?
>
> Will do.

Great! Thanks!

> While you're working on this driver,

I'm not working on that driver. Just looked into it because of this
sysbot issue. I even don't have that hardware to test.

> here's a suggestion for another
> improvement you can make.  The temporary buffer allocations and calls to
> usb_control_msg() in dlfb_get_edid() and dlfb_select_std_channel() can
> be replaced with calls to usb_control_msg_recv() and
> usb_control_msg_send() respectively.

Ok, I'll look into it.

Helge