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=-3.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no 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 2788CC47095 for ; Wed, 9 Jun 2021 04:13:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id F134E6124C for ; Wed, 9 Jun 2021 04:13:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230477AbhFIEPU (ORCPT ); Wed, 9 Jun 2021 00:15:20 -0400 Received: from gw.atmark-techno.com ([13.115.124.170]:35982 "EHLO gw.atmark-techno.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230466AbhFIEPO (ORCPT ); Wed, 9 Jun 2021 00:15:14 -0400 Received: from mail-pl1-f199.google.com (mail-pl1-f199.google.com [209.85.214.199]) by gw.atmark-techno.com (Postfix) with ESMTPS id AF2238023C for ; Wed, 9 Jun 2021 13:13:12 +0900 (JST) Received: by mail-pl1-f199.google.com with SMTP id q15-20020a170902788fb0290115d406df52so256116pll.3 for ; Tue, 08 Jun 2021 21:13:12 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=9QfyL1AUne5+PBkZwxn6iFg7I6n6SWl6hKQ4WQ41Sdw=; b=D/uTl+16oxfKGT1FXgH1JJQhZrroEDGZLdCkBgTUwiEv8843I0mcoRkxvj/nh3RUCf Ub5PC53Ti8Exy6Q8cQuzq19lbksRONg9t958UGnJuGTjy04m35/i8VrZdf8YQvwyFBgf /Zy9T6tQUeQ8srYhWIKvfi6IiS90s7m9geuST8DPChECuoqi1W8J8rM5u8f8PDL8EkZe N9AlGAJSySFJMZDxfqjL33nHRhD6spNFVQuz+KUMyB1+gJq2tXqbPne8qUdnDMLs51Iz f44jKIoIWogmPwuu2ok1HZFL3J5OQcN3M4GEe6TFHUByNn8OEf+HBfTDY13u7xqeEHmS P+vA== X-Gm-Message-State: AOAM531Nnwv4LNZKfOrvKkBwunnKczRvPcHZhaNCpANkzxfv3OJLKmgj I1nBCuflD/TDHvKJnnxpbG02l6987Us1OxyMwNbffW6ehmgCEngwoXwEoFGGAVnv4e8ISt62rNG s9WG9JqAfjRRmbCjqPaXxUiTu5cN8 X-Received: by 2002:a63:e453:: with SMTP id i19mr1792186pgk.134.1623211991859; Tue, 08 Jun 2021 21:13:11 -0700 (PDT) X-Google-Smtp-Source: ABdhPJw9HC5Bv6qB3T/yEtdheshM0zEACgeTRb+kFv+9S95dtq6BS65/TpUlvArfNquzDDeJmTnupQ== X-Received: by 2002:a63:e453:: with SMTP id i19mr1792172pgk.134.1623211991610; Tue, 08 Jun 2021 21:13:11 -0700 (PDT) Received: from pc-0115 (178.101.200.35.bc.googleusercontent.com. [35.200.101.178]) by smtp.gmail.com with ESMTPSA id nn6sm15509433pjb.57.2021.06.08.21.13.10 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Tue, 08 Jun 2021 21:13:11 -0700 (PDT) Received: from martinet by pc-0115 with local (Exim 4.94.2) (envelope-from ) id 1lqpaX-009K8i-MQ; Wed, 09 Jun 2021 13:13:09 +0900 Date: Wed, 9 Jun 2021 13:12:59 +0900 From: Dominique MARTINET To: Guenter Roeck Cc: Laurent Pinchart , Mauro Carvalho Chehab , Sakari Ailus , linux-uvc-devel@lists.sourceforge.net, linux-usb@vger.kernel.org, linux-media@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH RESEND v3 0/5] media: uvcvideo: Fix race conditions Message-ID: References: <20200917022547.198090-1-linux@roeck-us.net> <20200917124714.GD3969@pendragon.ideasonboard.com> <990652f1-b6e4-211c-7a96-8c3fc3ea6efd@roeck-us.net> <74c0c32a-ebb5-34e0-d3a2-6b417ce328a1@roeck-us.net> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <74c0c32a-ebb5-34e0-d3a2-6b417ce328a1@roeck-us.net> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Guenter Roeck wrote on Fri, Mar 12, 2021 at 06:54:52AM -0800: > On 3/11/21 11:36 PM, Dominique MARTINET wrote: > > Guenter Roeck wrote on Thu, Sep 17, 2020 at 07:16:17PM -0700: > >> On 9/17/20 5:47 AM, Laurent Pinchart wrote: > >>> I haven't checked the mailing list, but I've found it in my inbox :-) > >>> I'm not forgetting about you, just been fairly busy recently. I still > >>> plan to try and provide an alternative implementation in the V4L2 core > >>> (in a form that I think should even be moved to the cdev core) that > >>> would fix this for all drivers. > >>> > >> Thanks for letting me know. As it turns out, this problem is responsible > >> for about 2% of all Chromebook crashes, so I'll probably not wait for > >> the series to be accepted upstream but apply it as-is to the various > >> ChromeOS kernel branches. > > > > We have a customer who reported the same issue recently, has there been > > any development? > > > > Not that I know of. We applied the series to all Chrome OS kernel branches, > and it reliably fixes the problem for us. We'd like to have the problem > fixed upstream; until that happens we'll have to carry the series forward. Thanks for confirming. Laurent, would it make sense to take the patches as they are until a better fix is ready? -- Dominique