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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E0419C433EF for ; Thu, 20 Jan 2022 19:42:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1346987AbiATTmz (ORCPT ); Thu, 20 Jan 2022 14:42:55 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48052 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1346782AbiATTmy (ORCPT ); Thu, 20 Jan 2022 14:42:54 -0500 Received: from mail-lf1-x133.google.com (mail-lf1-x133.google.com [IPv6:2a00:1450:4864:20::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E79A9C061574 for ; Thu, 20 Jan 2022 11:42:53 -0800 (PST) Received: by mail-lf1-x133.google.com with SMTP id br17so25652607lfb.6 for ; Thu, 20 Jan 2022 11:42:53 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=message-id:date:mime-version:user-agent:subject:content-language:to :cc:references:from:in-reply-to:content-transfer-encoding; bh=lIwAaV/sOiJskwZ8dAZjFcKyoRWiQLL8BKYqIJj5Q/M=; b=B6P+imJStArjlUjyghxrWxOrIwtqhypkrileqh4LhJWtKW7XoZ+pJhmgZ5fgZ+iU5H R4wH3YQKOjaMxhSXoEMRluk+KxSjLUttFgk/ty9TOvwptBz6PZAuvtuTpe3uDbyCwGci eqJALWGmB6Zh8fEzWY8WxFn97wu6SFoaVbkXoyVEl9dW5MEaZ6BfLNrPS6vrWlxJDIoK AaSuzOW2EBHris16YKkkGTcbIRCu3zT+pyObN2k+4HPdyrL5FzyOSTN4M9+bQiny8dTB i5rqWkDgX7hBglK5STYC6MvMfTRsIM/wFqwyBRY9sXqU3cVYpDzr6Ye38uULAU2olfua SEpw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:message-id:date:mime-version:user-agent:subject :content-language:to:cc:references:from:in-reply-to :content-transfer-encoding; bh=lIwAaV/sOiJskwZ8dAZjFcKyoRWiQLL8BKYqIJj5Q/M=; b=2WACdeATTTuKgwibKRszLRR1wZcBBnDQn8fyomVpjDqfg47DT0E6/klPrcATTrqaIl z5ZYnuA+iYzqw1i0BtOtjGsiYePAjPoyJYKu1kUeaJcTkkMtnHXIYLp6XTaxttXkQRRU 1vALgoHNvsSpCaj4JXLdIbhbW+PZXWa8eHSdpPcA2tXqqJMrVj/2yP8opRDVxmaNIubr IRFTiqgdG/1POC9P+JtCET1yMvfQrGReg0yuGuJyhSOOgudEfub0AdDBR84OfXLDO/5Z OSV0Ozm6OgC87tMJ6cBbwNLceHYd0Co05J+P1mAI2uKkw2bc3vwQfeMSgFF1tbKRpg+k HWRw== X-Gm-Message-State: AOAM5322STGTQVPdHyxg8g92QlffMOx150uvhQGRAiDY5Gq+hafAAMqt oOBseEkCvEdUVJqoP5lvGcs= X-Google-Smtp-Source: ABdhPJwo2Ril0461ZnOkT2YtoMWMnMb4D5vegeFcz/yXGD0vlA7HNY6XOYNSQ5iV/jCqwnAnCeV/KQ== X-Received: by 2002:a2e:6e0b:: with SMTP id j11mr447619ljc.3.1642707772258; Thu, 20 Jan 2022 11:42:52 -0800 (PST) Received: from [192.168.1.11] ([94.103.227.208]) by smtp.gmail.com with ESMTPSA id d22sm12548lfm.252.2022.01.20.11.42.50 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 20 Jan 2022 11:42:51 -0800 (PST) Message-ID: Date: Thu, 20 Jan 2022 22:42:48 +0300 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.5.0 Subject: Re: Kernel hangs after DVB patch from July 2021 with Hauppauge WinTV dualHD Content-Language: en-US To: =?UTF-8?Q?Maximilian_B=c3=b6hm?= , Mauro Carvalho Chehab Cc: hverkuil-cisco@xs4all.nl, sashal@kernel.org, linux-media@vger.kernel.org, Brad Love References: <6a72a37b-e972-187d-0322-16336e12bdc5@elbmurf.de> <20211218101519.756c027d@coco.lan> <45306193-deec-d1a3-d74d-41dc361b36d9@gmail.com> <5c891c4a-7a02-18b7-c4c1-8429fcd3366f@elbmurf.de> <12440c22-9f69-740d-bcfd-3b6bf0e4dcc1@gmail.com> <23b3f65c-8f52-6109-d5ca-52ee12da6115@elbmurf.de> From: Pavel Skripkin In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Hi Maximilian, On 1/20/22 22:29, Maximilian Böhm wrote: > Hey Pavel, > > I would prefer reverting your use-after-free change. I’m still on Linux 5.15.2 to avoid this issue. I’m not sure if I understand your last mails correctly, did you already revert the change or did you just offer to do it? Anyway, reverting locally wouldn’t be feasible long-term. > If I could help eliminating this bug, I would gladly offer my system for a remote hacking session via ssh or Teamviewer or try other patch ideas. > Since I don't have enough time to look into this, I've just sent a revert. I've looked couple of times at the code, but unfortunately solution didn't come up You should be in CC list, can you also test and reply to patch with Tested-by: tag, which will indicate, that revert actually works for you Thanks > Btw, found this forum thread describing the same original problem (which is forcing me to use usbreset after standby) on Windows, so this probably is a bug in the tuner hardware, not in the Linux driver: https://www.dvbviewer.tv/forum/topic/63002-hauppauge-wintv-dualhd-stick-geht-oft-nicht-nach-standby/ > > If I were to submit an official "device quirk" for the Linux kernel, would it be affected of your use-after-free change too? Nobody knows, I guess? > With regards, Pavel Skripkin