From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.2 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id DEFABC433DF for ; Fri, 16 Oct 2020 13:06:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 78B42207C4 for ; Fri, 16 Oct 2020 13:06:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2395509AbgJPNGa (ORCPT ); Fri, 16 Oct 2020 09:06:30 -0400 Received: from jabberwock.ucw.cz ([46.255.230.98]:41602 "EHLO jabberwock.ucw.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2394512AbgJPNG3 (ORCPT ); Fri, 16 Oct 2020 09:06:29 -0400 Received: by jabberwock.ucw.cz (Postfix, from userid 1017) id C38781C0B7D; Fri, 16 Oct 2020 15:06:27 +0200 (CEST) Date: Fri, 16 Oct 2020 15:06:27 +0200 From: Pavel Machek To: Greg Kroah-Hartman Cc: linux-kernel@vger.kernel.org, stable@vger.kernel.org, syzbot+009f546aa1370056b1c2@syzkaller.appspotmail.com, Anant Thazhemadam 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> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="HlL+5n6rz5pIUxbD" Content-Disposition: inline In-Reply-To: <20201016090437.987989197@linuxfoundation.org> User-Agent: Mutt/1.5.23 (2014-03-12) Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org --HlL+5n6rz5pIUxbD Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Hi! > From: Anant Thazhemadam >=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 > Cc: stable > Link: https://lore.kernel.org/r/20201010082933.5417-1-anant.thazhemadam@g= mail.com > Signed-off-by: Greg Kroah-Hartman > Signed-off-by: Greg Kroah-Hartman Why duplicate Sign-off? Best regards, Pavel --=20 http://www.livejournal.com/~pavelmachek --HlL+5n6rz5pIUxbD Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iEYEARECAAYFAl+JmtIACgkQMOfwapXb+vLYuACglJXlWCS7ODg7GkEHkt1S3fbn bTwAoKeycDZdTyfsy7RYZtgy4rcWYvyR =s3Ty -----END PGP SIGNATURE----- --HlL+5n6rz5pIUxbD--