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 27F941B85E5 for ; Fri, 6 Sep 2024 19:46:44 +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=1725652005; cv=none; b=OKMBwpA+8vqBRLw93qLxWp0VGc+3F4DD0VhQTskpuTwRarTCbPP8xqo1xOiyLytCm8XVhPm/A0V+59kMNm/tH7+lR9PAh8aeXMygnp5tp+OGqNVRh0e8fAjalHgwHZO9pT0O/u5Hdg1KaSaTjU1fQYoiqmbLi7BHeLXCilklu7M= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725652005; c=relaxed/simple; bh=p7mrfn/QHp0eAqiysSS2XUaeOwHodjXIVOU0u1cKLNo=; h=From:To:Subject:Date:Message-ID:In-Reply-To:References: Content-Type:MIME-Version; b=cRWUWAO2CU8DPa8pyzuCTUlQEhsKnfKr+Jl6nSp8weOMHqyiBH7cwoRBGsv3BhM496Sms1W1rKqRJoMEgHxtysYw5XHzYAIBBY9gLnwmBXhz3hc/WTK3Sp1QN4GHU5UhUiYdUyLO/P6vqeKwIIj4uFX1i0WOD/rL00wAlBnplUw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Hw5+RPBx; 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="Hw5+RPBx" Received: by smtp.kernel.org (Postfix) with ESMTPS id 99417C4CEC7 for ; Fri, 6 Sep 2024 19:46:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1725652004; bh=p7mrfn/QHp0eAqiysSS2XUaeOwHodjXIVOU0u1cKLNo=; h=From:To:Subject:Date:In-Reply-To:References:From; b=Hw5+RPBxCkdK1APGARANI5NoHxmEWt99fu05s/k4yMc+sF/fK8b+R2WFyMCGVm6qZ ZH9VpF9T2nR68N8fs3r7EBMsAuJulwQ5/yBEfMHVtByIw/3EmzbEVO9h5nr97e26gk IijyrW+FTbGvB38DRltDVTnLLbIItpijRRIYaWXsLx/Xsw/5wm9TDAf7Hbs83fNi8w CQfYWvmiL6/fDeYschgp5QM8cF1+njkwucDgT1b5DEQHM9b9/wQ4+HyVCevN8PIcUm jkBIQZ1P8E85T/v1UAOXafg2KB6T16p8vo7onY7N9vCvfAls2AtQFEQpme1/Q3xlBC KG82EAlPF9Hmg== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id 8F0D6C53BC4; Fri, 6 Sep 2024 19:46:44 +0000 (UTC) From: bugzilla-daemon@kernel.org To: linux-ext4@vger.kernel.org Subject: [Bug 219166] occasional block layer hang when setting 'echo noop > /sys/block/sda/queue/scheduler' Date: Fri, 06 Sep 2024 19:46:44 +0000 X-Bugzilla-Reason: None X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: AssignedTo fs_ext4@kernel-bugs.osdl.org X-Bugzilla-Product: File System X-Bugzilla-Component: ext4 X-Bugzilla-Version: 2.5 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: rjones@redhat.com X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: fs_ext4@kernel-bugs.osdl.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugzilla.kernel.org/ Auto-Submitted: auto-generated Precedence: bulk X-Mailing-List: linux-ext4@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 https://bugzilla.kernel.org/show_bug.cgi?id=3D219166 --- Comment #14 from Richard W.M. Jones (rjones@redhat.com) --- I think I have bisected this to: commit af2814149883e2c1851866ea2afcd8eadc040f79 Author: Christoph Hellwig Date: Mon Jun 17 08:04:38 2024 +0200 block: freeze the queue in queue_attr_store queue_attr_store updates attributes used to control generating I/O, and can cause malformed bios if changed with I/O in flight. Freeze the que= ue in common code instead of adding it to almost every attribute. Signed-off-by: Christoph Hellwig Reviewed-by: Bart Van Assche Reviewed-by: Damien Le Moal Reviewed-by: Hannes Reinecke Reviewed-by: Chaitanya Kulkarni Link: https://lore.kernel.org/r/20240617060532.127975-12-hch@lst.de Signed-off-by: Jens Axboe --=20 You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.=