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Date:   Fri, 16 Oct 2020 15:06:27 +0200
From:   Pavel Machek <pavel@denx.de>
To:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc:     linux-kernel@vger.kernel.org, stable@vger.kernel.org,
        syzbot+009f546aa1370056b1c2@syzkaller.appspotmail.com,
        Anant Thazhemadam <anant.thazhemadam@gmail.com>
Subject: Re: [PATCH 4.19 14/21] staging: comedi: check validity of
 wMaxPacketSize of usb endpoints found
Message-ID: <20201016130626.GA4335@amd>
References: <20201016090437.301376476@linuxfoundation.org>
 <20201016090437.987989197@linuxfoundation.org>
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Hi!

> From: Anant Thazhemadam <anant.thazhemadam@gmail.com>
>=20
> commit e1f13c879a7c21bd207dc6242455e8e3a1e88b40 upstream.
>=20
> While finding usb endpoints in vmk80xx_find_usb_endpoints(), check if
> wMaxPacketSize =3D 0 for the endpoints found.
>=20
> Some devices have isochronous endpoints that have wMaxPacketSize =3D 0
> (as required by the USB-2 spec).
> However, since this doesn't apply here, wMaxPacketSize =3D 0 can be
> considered to be invalid.
>=20
> Reported-by: syzbot+009f546aa1370056b1c2@syzkaller.appspotmail.com
> Tested-by: syzbot+009f546aa1370056b1c2@syzkaller.appspotmail.com
> Signed-off-by: Anant Thazhemadam <anant.thazhemadam@gmail.com>
> Cc: stable <stable@vger.kernel.org>
> Link: https://lore.kernel.org/r/20201010082933.5417-1-anant.thazhemadam@g=
mail.com
> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Why duplicate Sign-off?

Best regards,
							Pavel
--=20
http://www.livejournal.com/~pavelmachek

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