From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965550AbcIPUja (ORCPT ); Fri, 16 Sep 2016 16:39:30 -0400 Received: from bh-25.webhostbox.net ([208.91.199.152]:50327 "EHLO bh-25.webhostbox.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965225AbcIPUj1 (ORCPT ); Fri, 16 Sep 2016 16:39:27 -0400 Date: Fri, 16 Sep 2016 13:38:19 -0700 From: Guenter Roeck To: Petr Mladek Cc: linux-kernel@vger.kernel.org, Andrew Morton , Tejun Heo , James Hogan , linux-metag@vger.kernel.org Subject: qemu:metag image runtime failure in -next due to 'kthread: allow to cancel kthread work' Message-ID: <20160916203819.GA29767@roeck-us.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.23 (2014-03-12) X-Authenticated_sender: guenter@roeck-us.net X-OutGoing-Spam-Status: No, score=-1.0 X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - bh-25.webhostbox.net X-AntiAbuse: Original Domain - vger.kernel.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - roeck-us.net X-Get-Message-Sender-Via: bh-25.webhostbox.net: authenticated_id: guenter@roeck-us.net X-Authenticated-Sender: bh-25.webhostbox.net: guenter@roeck-us.net X-Source: X-Source-Args: X-Source-Dir: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, I see the following runtime error in -next when running a metag qemu emulation. [ ... ] workingset: timestamp_bits=30 max_order=16 bucket_order=0 io scheduler noop registered (default) brd: module loaded Warning: unable to open an initial console. List of all partitions: 0100 16384 ram0 (driver?) No filesystem could mount root, tried: Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(1,0) An example for a complete log is at: http://kerneltests.org/builders/qemu-metag-next/builds/489/steps/qemubuildcommand/logs/stdio bisect points to commit ef98de028afde ("kthread: allow to cancel kthread work"). I don't know (yet) if other architectures are affected. bisect log is attached. The scripts to run this test are available at https://github.com/groeck/linux-build-test/tree/master/rootfs/metag. Guenter -- # bad: [ddf9d15aed5ba5786cf4b082576c44ce37cd29c2] Add linux-next specific files for 20160916 # good: [9395452b4aab7bc2475ef8935b4a4fb99d778d70] Linux 4.8-rc6 git bisect start 'HEAD' 'v4.8-rc6' # good: [03593c66538f0dd2c46f14dfdd9c7c0b96d12163] Merge remote-tracking branch 'crypto/master' git bisect good 03593c66538f0dd2c46f14dfdd9c7c0b96d12163 # good: [144ff127c1a802bc466cd9fe64033682193c0831] Merge remote-tracking branch 'edac-amd/for-next' git bisect good 144ff127c1a802bc466cd9fe64033682193c0831 # good: [cfab536f2992d0db27424f146cf0e13bb4a2c0c4] Merge remote-tracking branch 'staging/staging-next' git bisect good cfab536f2992d0db27424f146cf0e13bb4a2c0c4 # good: [f185e7dd5ed5eb7e1a834bde8ad6ea1393737037] Merge remote-tracking branch 'gpio/for-next' git bisect good f185e7dd5ed5eb7e1a834bde8ad6ea1393737037 # good: [a69892f0ba574e71154f8c5c647626a7dd065ce5] ipc-msg-avoid-waking-sender-upon-full-queue-checkpatch-fixes git bisect good a69892f0ba574e71154f8c5c647626a7dd065ce5 # good: [209370566ef8c38dcea40561db2c46fadb0078ce] Merge tag 'clk-renesas-for-v4.9-tag3' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers into clk-next git bisect good 209370566ef8c38dcea40561db2c46fadb0078ce # good: [be3400244f19bb16b16b5dd32d8719e59790f361] Merge remote-tracking branch 'coresight/next' git bisect good be3400244f19bb16b16b5dd32d8719e59790f361 # good: [513d99d37db2a9ceb489e7123fb1458b29eeafff] Merge remote-tracking branch 'nvdimm/libnvdimm-for-next' git bisect good 513d99d37db2a9ceb489e7123fb1458b29eeafff # good: [9101ca3b2763583e10ec93a453363a8af3ced438] kthread: add kthread_create_worker*() git bisect good 9101ca3b2763583e10ec93a453363a8af3ced438 # bad: [57169cae0bc5472d9d3eee5c0923ae6d5ae8d299] kthread: better support freezable kthread workers git bisect bad 57169cae0bc5472d9d3eee5c0923ae6d5ae8d299 # good: [5c204b8f9b8f30bf641095f4005fa320cd192254] kthread: initial support for delayed kthread work git bisect good 5c204b8f9b8f30bf641095f4005fa320cd192254 # bad: [26242e2b569d11fbbfdf40c93d9d11329825724a] kthread: allow to modify delayed kthread work git bisect bad 26242e2b569d11fbbfdf40c93d9d11329825724a # bad: [ef98de028afde6861712a208b0e25f6b6af3912a] kthread: allow to cancel kthread work git bisect bad ef98de028afde6861712a208b0e25f6b6af3912a # first bad commit: [ef98de028afde6861712a208b0e25f6b6af3912a] kthread: allow to cancel kthread work