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 BC7C5C6379F for ; Wed, 15 Feb 2023 21:39:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229770AbjBOVj0 (ORCPT ); Wed, 15 Feb 2023 16:39:26 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37958 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229644AbjBOVj0 (ORCPT ); Wed, 15 Feb 2023 16:39:26 -0500 Received: from cmx-mtlrgo001.bell.net (mta-mtl-005.bell.net [209.71.208.25]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C44D52C655; Wed, 15 Feb 2023 13:39:24 -0800 (PST) X-RG-CM-BuS: 0 X-RG-CM-SC: 0 X-RG-CM: Clean X-Originating-IP: [174.88.80.151] X-RG-Env-Sender: dave.anglin@bell.net X-RG-Rigid: 63E35DF700C26604 X-CM-Envelope: MS4xfC3IQMkdXBhu0u3KzBuLwxQnc588ETT/IIKZWdSOasJEKDXxObhaBd+yl7I8srew9beDjsAqJtSkczrwKgvIMYv1E14LZIx8r/U+vy8Dp9APmhVJQApx nHVDa9XkmIYBxo/j9ouootP/o24x9CyJY5rJQt+n31scXOLArk6pEzCZ7xv09q/OdM3sLAXp/4iHxKbcf9508NXmsEjPpaBLynFyuMOzVJL4zLmdQenJOU13 IjWfibFSrTEcmnq0jaK6x4+CrsTr/K/5z88VHHvEFBY1TzFXKHmIk/DejJCvIObonyo60AV5yxQPbJdv7mtmQ9wWLQeHLSdp4ovM/jlFaxxo3AhuuoO3H8Vi Nt2f1gwRGVg7QrABbn4dRB9AcAr8Smu4wXMRBjsCS6RbvFczSe4= X-CM-Analysis: v=2.4 cv=AuWNYMxP c=1 sm=1 tr=0 ts=63ed5109 a=6Iw0JHgwQEnu+SgMJEJdFQ==:117 a=6Iw0JHgwQEnu+SgMJEJdFQ==:17 a=IkcTkHD0fZMA:10 a=FBHGMhGWAAAA:8 a=6tV3kuHN6HInf6AXVRMA:9 a=QEXdDO2ut3YA:10 a=9gvnlMMaQFpL9xblJ6ne:22 Received: from [192.168.2.49] (174.88.80.151) by cmx-mtlrgo001.bell.net (5.8.814) (authenticated as dave.anglin@bell.net) id 63E35DF700C26604; Wed, 15 Feb 2023 16:39:21 -0500 Message-ID: <5e72c1fc-1a7b-a4ed-4097-96816b802e6d@bell.net> Date: Wed, 15 Feb 2023 16:39:22 -0500 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101 Thunderbird/102.7.2 Subject: Re: io_uring failure on parisc with VIPT caches Content-Language: en-US From: John David Anglin To: Jens Axboe , Helge Deller , io-uring@vger.kernel.org, linux-parisc@vger.kernel.org, James Bottomley References: <006e8db4-336f-6717-ecb0-d01a0e9bc483@kernel.dk> <626cee6f-f542-b7eb-16ca-1cf4e3808ca6@bell.net> <5f02fa8b-7fd8-d98f-4876-f1a89024b888@kernel.dk> <2b89f252-c430-1c44-7b30-02d927d2c7cb@gmx.de> <0bfe6cdb-2749-c08d-a1b2-ef46fed1ded3@bell.net> <07810314-94f6-0e9a-984b-0a286cbb59d3@kernel.dk> <4f4f9048-b382-fa0e-8b51-5a0f0bb08402@kernel.dk> <99a41070-f334-f3cb-47cd-8855c938d71f@bell.net> In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org On 2023-02-15 4:06 p.m., John David Anglin wrote: > On 2023-02-15 3:37 p.m., Jens Axboe wrote: >>> System crashes running test buf-ring.t. >> Huh, what's the crash? > Not much info.  System log indicates an HPMC occurred. Unfortunately, recovery code doesn't work. The following occurred running buf-ring.t under gdb: INFO: task kworker/u64:9:18319 blocked for more than 123 seconds.       Not tainted 6.1.12+ #4 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u64:9   state:D stack:0     pid:18319 ppid:2 flags:0x00000000 Workqueue: events_unbound io_ring_exit_work Backtrace:  [<0000000040b5c210>] __schedule+0x2e8/0x7f0  [<0000000040b5c7d0>] schedule+0xb8/0x1d0  [<0000000040b66534>] schedule_timeout+0x11c/0x1b0  [<0000000040b5d71c>] __wait_for_common+0x194/0x2e8  [<0000000040b5d8ac>] wait_for_completion+0x3c/0x50  [<0000000040b46508>] io_ring_exit_work+0x3d8/0x4d0  [<0000000040268da8>] process_one_work+0x238/0x520  [<00000000402692a4>] worker_thread+0x214/0x778  [<0000000040276f94>] kthread+0x24c/0x258  [<0000000040202020>] ret_from_kernel_thread+0x20/0x28 INFO: task kworker/u64:10:18320 blocked for more than 123 seconds.       Not tainted 6.1.12+ #4 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u64:10  state:D stack:0     pid:18320 ppid:2 flags:0x00000000 Workqueue: events_unbound io_ring_exit_work Backtrace:  [<0000000040b5c210>] __schedule+0x2e8/0x7f0  [<0000000040b5c7d0>] schedule+0xb8/0x1d0  [<0000000040b66534>] schedule_timeout+0x11c/0x1b0  [<0000000040b5d71c>] __wait_for_common+0x194/0x2e8  [<0000000040b5d8ac>] wait_for_completion+0x3c/0x50  [<0000000040b46508>] io_ring_exit_work+0x3d8/0x4d0  [<0000000040268da8>] process_one_work+0x238/0x520  [<00000000402692a4>] worker_thread+0x214/0x778  [<0000000040276f94>] kthread+0x24c/0x258  [<0000000040202020>] ret_from_kernel_thread+0x20/0x28 gdb was sitting at a break at line 328. -- John David Anglin dave.anglin@bell.net