From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 09E711E6DFC; Mon, 21 Oct 2024 12:34:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729514100; cv=none; b=RiA87lxEtjqU4TCusPFuafCENnCHktN5D01oqorUygJFLHKqtFNLMLiShYkc6f1q2H35v4BySO+enUTSe76IQOK9H6AJfhJZxcIooU7QhCv3XOQ/O3Eu774YAEwVTDDFEMRPch4TcqgQLPSSSoluva6VbwxWl0wKLAiUydBpltM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729514100; c=relaxed/simple; bh=VZOZCsa7qmUi1UJAs2g6UE5vKe3qppCZnU+/JmMs3MM=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=YqSQLJgO8GKKYKpX5o1TiKeMNO8aXO7aBn9XcxAlSMAjWi+KiwfOvyW6/Rsu1R6rnQmqdTnMW0+iI5lJGdPSoK130r1CK6l4j6LajXJBrOyJldkmk230BusSlZqNAe28/f8ItGXklMGgWaCwwXF/ysGzxiPBnJBxilU8GPDq7uo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=ir1E01Hk; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="ir1E01Hk" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2609EC4CEC3; Mon, 21 Oct 2024 12:34:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1729514099; bh=VZOZCsa7qmUi1UJAs2g6UE5vKe3qppCZnU+/JmMs3MM=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=ir1E01Hk4ahjBe1tmsfx5Gf2r2s8a23b73oDLRtW8dM4ZpsNVVSH/LHHWTLYEH2wX QQqAFDsITMAlDpiHa96cI9PRGxWcfBIcdT0kT/RNR9eYnM15jhQvbEyEmgCMdP0Sb9 7SMvrp7LApAfACXBVCeaVppnQThqHx//jvk3Mw9Yc/rwbG2er2IT+cIMAh25BdTp9t JGCkLHcM8n4wJNkk7GiQEf6wWlmJ8twc1XrTDa7hjlE9rLqHqpRRX+R6xrpiutR5d8 Tq4QnGUviSZAClOLyyLrSMtwHlmoLUj1Ych5UnvSYwP+vtsN1EsxbFiTTRtlAMp/Uf aWZynCA/UBeug== Message-ID: <6cda84ae-c07a-4905-9cf8-12622dab33ee@kernel.org> Date: Mon, 21 Oct 2024 21:34:56 +0900 Precedence: bulk X-Mailing-List: linux-ide@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3] ata: libata: Clear DID_TIME_OUT for ATA PT commands with sense data To: Niklas Cassel , "Lai, Yi" Cc: Hannes Reinecke , "Martin K. Petersen" , Igor Pylypiv , Niklas Cassel , linux-ide@vger.kernel.org, yi1.lai@intel.com, syzkaller-bugs@googlegroups.com, linux-kernel@vger.kernel.org References: <20240909154237.3656000-2-cassel@kernel.org> From: Damien Le Moal Content-Language: en-US Organization: Western Digital Research In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 10/21/24 21:07, Niklas Cassel wrote: > Hello Yi Lai, > > On Mon, Oct 21, 2024 at 06:58:59PM +0800, Lai, Yi wrote: >> Hi Niklas Cassel, >> >> Greetings! >> >> I used Syzkaller and found that there is INFO: task hung in blk_mq_get_tag in v6.12-rc3 >> >> After bisection and the first bad commit is: >> " >> e5dd410acb34 ata: libata: Clear DID_TIME_OUT for ATA PT commands with sense data >> " > > It might be that your bisection results are accurate. > > However, after looking at the stacktraces, I find it way more likely that > bisection has landed on the wrong commit. > > See this series that was just queued (for 6.13) a few days ago that solves a > similar starvation: > https://lore.kernel.org/linux-block/20241014092934.53630-1-songmuchun@bytedance.com/ > https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git/log/?h=for-6.13/block > > You could perhaps run with v6.14-rc4 (which should be able to trigger the bug) > and then try v6.14-rc4 + that series applied, to see if you can still trigger > the bug? s/6.14/6.13 in this paragraph :) -- Damien Le Moal Western Digital Research