From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932796AbdCIRkm (ORCPT ); Thu, 9 Mar 2017 12:40:42 -0500 Received: from esa3.hgst.iphmx.com ([216.71.153.141]:12884 "EHLO esa3.hgst.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932193AbdCIRkj (ORCPT ); Thu, 9 Mar 2017 12:40:39 -0500 X-IronPort-AV: E=Sophos;i="5.36,136,1486396800"; d="scan'208";a="1966339" Authentication-Results: spf=pass (sender IP is 74.221.232.54) smtp.mailfrom=sandisk.com; zytor.com; dkim=none (message not signed) header.d=none;zytor.com; dmarc=bestguesspass action=none header.from=sandisk.com; X-AuditID: ac1c2133-9afff7000000c960-2a-58c18ee93dd2 From: Bart Van Assche To: "tglx@linutronix.de" CC: "torvalds@linux-foundation.org" , "mingo@kernel.org" , "linux-kernel@vger.kernel.org" , "hpa@zytor.com" , "akpm@linux-foundation.org" Subject: Re: [GIT pull] CPU hotplug updates for 4.9 Thread-Topic: [GIT pull] CPU hotplug updates for 4.9 Thread-Index: AQHSmPl4AsEHh096XEC45J3kjsZR6g== Date: Thu, 9 Mar 2017 17:20:39 +0000 Message-ID: <1489080026.2597.7.camel@sandisk.com> References: <1488851515.6858.2.camel@sandisk.com> <1488925949.2739.3.camel@sandisk.com> <1489001551.2813.3.camel@sandisk.com> In-Reply-To: Accept-Language: nl-NL, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [172.28.1.254] Content-Type: text/plain; charset="iso-8859-1" Content-ID: <466440E16AE03C44807DC445F99CDD4C@sandisk.com> MIME-Version: 1.0 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFtrKIsWRmVeSWpSXmKPExsWyRobxn+7rvoMRBicPm1nMWb+GzWLaRnGL y7vmsFms/neK0WLzpqnMFo/63rI7sHlsWtXJ5vHu3Dl2jxMzfrN4fN4k53Gi5QtrAGsUl01K ak5mWWqRvl0CV8b+S9/YC84IVVxaZ9vAuIK/i5GTQ0LARGJiZwtbFyMXh5DAEiaJA3fmsIAk hASOMkr8+pkGYrMJGEnMnrAHLC4ioCvRtLGNBaSBWaCTSeLz/c2MIAlhAWOJ/pvLoYpMJLbN ncEOYetJvP8/F8jm4GARUJFo2SoAEuYVMJS4NXc6C8Tig0wSJxu62EASnALmEleXLGYGqWcU kJVoec0NEmYWEJe49WQ+E8TRAhJL9pxnhrBFJV4+/scKYStIfF7xjw2iXk/ixtQpULaVxOm2 WywQtrbEsoWvmSFuEJQ4OfMJywRGsVlIVsxC0j4LSfssJO2zkLQvYGRdxShWnJhcnJueWmBo olecmJeSWZytl5yfu4kRHJmKxjsY/21wP8QowMGoxMP7IfdghBBrYllxZe4hRgkOZiURXqdW oBBvSmJlVWpRfnxRaU5q8SFGaQ4WJXHemNlTI4QE0hNLUrNTUwtSi2CyTBycUg2MliLRLic6 9p94quMg62y4dFbEZm+dmTOjpvemGpnnNkff+3eywmjXxDCu47M+9nrKvayfqtMUKTlr8Yvo 0gnPfuz9eUJDuZznxhQJOUmZOQe1ecq3napNXpC3rdhIwkjn1VFLqROmm/bbZE/KOxcsdLRl zbL8qYdST3VGzL5jcHbeDa/3pZlPlFiKMxINtZiLihMBUcwhp8gCAAA= X-EOPAttributedMessage: 0 X-MS-Office365-Filtering-HT: Tenant X-Forefront-Antispam-Report: CIP:74.221.232.54;IPV:NLI;CTRY:US;EFV:NLI;SFV:NSPM;SFS:(10019020)(6009001)(39840400002)(39860400002)(39450400003)(39410400002)(39850400002)(2980300002)(438002)(24454002)(199003)(377424004)(189002)(9170700003)(15650500001)(4326008)(76176999)(103116003)(54356999)(38730400002)(50466002)(110136004)(6246003)(2906002)(50986999)(229853002)(54906002)(8936002)(8676002)(81166006)(1730700003)(6116002)(8746002)(3846002)(7736002)(356003)(305945005)(102836003)(5250100002)(5640700003)(2501003)(93886004)(2351001)(2270400002)(106116001)(86362001)(106466001)(5660300001)(36756003)(47776003)(2900100001)(23756003)(6916009)(53936002)(189998001)(33646002)(2950100002)(7099028);DIR:OUT;SFP:1102;SCL:1;SRVR:CY1PR0401MB1501;H:sacsmgep14.sandisk.com;FPR:;SPF:Pass;MLV:sfv;A:1;MX:1;LANG:en; X-Microsoft-Exchange-Diagnostics: 1;BN3NAM04FT010;1: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 X-MS-Office365-Filtering-Correlation-Id: 5c1a5741-c396-49de-65bd-08d467109ec7 X-Microsoft-Antispam: UriScan:;BCL:0;PCL:0;RULEID:(22001)(8251501002);SRVR:CY1PR0401MB1501; X-Microsoft-Exchange-Diagnostics: 1;CY1PR0401MB1501;3:aUFj+trlfoMV59rLT0i4CA2BO9KOYjIqhY5yrdQSXa/JLrWJmxvTYhI3ABNtyB8LRuhG0JI5KGOkSrw4AOzOlJogIiSD1jIOeKQ+oRCCllKkSSyZaXDGTQrJ8SAM1vL8vn0qiTQOHKLdsuKEgj2Hg1eNM0OvY+LgwpUrv5HgxTC8zv9wUKpqesmA4q9ZVHz9hSPKIeR1uJ3pLZbtzTSMfT4uizDnaAgr/+klPKvsH14Tk2MNejigSTI7zDZvfP154sVZ3kczBWwEVZfhrikwxbXuszHR1ujlqXCY7qO5KBZ1xio1VdgwuubnVUkg0vHBimZGdJla8Hu3JUeuuOgqxTNx7hnEfGmFUCGQF8vkH3qI8qty/UAWwUB6nsPyewhlAhIdcfI7ft7a2cg2sGhfzw==;25:Qd0cudU37ZHlDrhZcS89GGbO/74xTrIIOOEgyKejOulnTzGWWaKZw3rBzTJjb1jYgyVPAhWAyKX2r0LMTwBLM8qAVou6M2+Gdlgv5SGaWDuQkCJKiIocJpLeFWn/6txnVkzi82+OXxoo+0CJUjWICXp5Uw1cZO9sg3HWgphkAd3TCE3Uzxk4afum9dkJZ8nKivRC9xPsaMPNVNnPfjvavhr07zYdaifw31M551QBheDJaKZYSg2fTkUjbK9bZDTkSd6SpFcFCzBq2FfHnsBZSZrprRRal39gp6iAHO/4TwvpsCfPtmOiw1SQ32TRwvUa5CWKtCeF09B2OPF9O1l/X4DSl68E91T3vZMap5Mb9XjBBnDWlJ7cxMRume0vLJyZS964l/OGnKG1iaWYHxWfkVcB9PQAM1P7PjZKWsICptqAs8lAXnrw8eIAq6kdzunI81WFBV3MKsG6QYWajzF3Eg== X-Microsoft-Exchange-Diagnostics: 1;CY1PR0401MB1501;31:BTV6dEAurzoqnvHasXu/Hv0A19HUMYHFFXHaYMly4FZ9RKD8OJWRoUn+HQOqSHp+etGYaieoedAhxbChKoMQT35dJU1mR+T6KoP1i+Q5uNDeL/d53PR7IP5yyrjNgzIIy5is2mn63ru42mYC5vPaM+OsgoVtiLxccNQUn3SgvebH1TgWKcfHk6trtnb2+MFDpwXYDidoC8BOu4Vck1T3k0K6eSiE0eu8rJ2v6qnCf905s8k8CNl1TvCSYtQWrRQEItVD93M1GV4QNHEIAJbdNAlaRqA5lYznM2uWdqkVJvQ=;20: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 WDCIPOUTBOUND: EOP-TRUE X-Microsoft-Antispam-PRVS: X-Exchange-Antispam-Report-Test: UriScan:; X-Exchange-Antispam-Report-CFA-Test: BCL:0;PCL:0;RULEID:(6040375)(601004)(2401047)(13024025)(13018025)(13016025)(13023025)(8121501046)(5005006)(10201501046)(3002001)(6055026)(6041248)(20161123564025)(20161123555025)(20161123558025)(20161123560025)(20161123562025)(6072148);SRVR:CY1PR0401MB1501;BCL:0;PCL:0;RULEID:;SRVR:CY1PR0401MB1501; X-Microsoft-Exchange-Diagnostics: 1;CY1PR0401MB1501;4: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 X-Forefront-PRVS: 0241D5F98C X-Microsoft-Exchange-Diagnostics: =?iso-8859-1?Q?1;CY1PR0401MB1501;23:KX87MKscp8lAw5Rg1KdxmUxDGoEC1ooLdH6FX?= =?iso-8859-1?Q?G3FrO+PuXkGadMiP+KJwkvr26YvP3XDeUfE7YGkzsdiR4qL/cJt98HtwCn?= =?iso-8859-1?Q?rRk+v9Tbg6qX/UAWXHV9MiXLBmNQDDnTrZRh5jl0CQtq9idNqNYYBkZMrJ?= =?iso-8859-1?Q?YT1N8aqYlqKDjdeqDdizjh2xQLiswmXKdWwmJpC23QzJkZGOzHikcrukuf?= =?iso-8859-1?Q?fAPyaL6HQOfEzPJ6XN8iMy1Tgu1od+mlkbdghpYBI8GkLq90xeCnbFTbjY?= =?iso-8859-1?Q?Nmo+FJ+QlrnD3n7FD9T9BpkS2uBMvY0//RM+LObM8t2ZmHe0+uMyevDwMN?= =?iso-8859-1?Q?eO4rRzJe/2fG2b4AZIWxwh6DnO/AT9WDz7PcmzCyLnMwzr02yr02bsPrOr?= =?iso-8859-1?Q?1XEtoEFjMsQk21QgoYDB75aOs4APWbcTcEzjsmsJalBXM8WEtCQTO81dbp?= =?iso-8859-1?Q?QRWqm5OT8Y32a9tBnXc8704sV/b3BPU+QJ0E5TWlDGMnBKi91QPUJpTBR4?= =?iso-8859-1?Q?SWTWpH+c0ryZ+ucpOqcVdiU9IHewG4UjHj9V9rOeBnBdFA5EhM9I/D6mS7?= =?iso-8859-1?Q?VahDv/N5vuN+6czKbHN3jWNcazTlbLOZw8wIJBMaG+Cn/3j4JQtfLIyeVP?= =?iso-8859-1?Q?EX9jlYZX5cgz5CkkPvcPpHReZRQABvO2DXZYNPgvGfw1n8gYL8Uo79D6ki?= =?iso-8859-1?Q?pu2NZVtsyWE3RJmp1v82jNleWR9bGH9n2W+8y33mUOy2W5CJ3iTvWPgYWS?= =?iso-8859-1?Q?xgv1WdNf0BP1tDaKrwoiRMqq5wl0rVtGLc58NKTLeYtj3k/vZUTMEgkvXo?= =?iso-8859-1?Q?yUmnI3Q6tf9vVtr5N0EuzghYrFh8NyJnEfVY+ENBOKUjIAd5/35sZXn6Qe?= =?iso-8859-1?Q?5GERctQgDDzaOnp8NxpeC9+i4xRwzMbdu/RW+FLXQkyJV7n7YLbMyCTKaF?= =?iso-8859-1?Q?o6P3gHtUnmesSWKQ3UYAERzbfm9NSe596N22VqwFYHWHkirj8iGCrdN+7w?= =?iso-8859-1?Q?2bi+ehQC4WE7uoxhgEOkXxAlH9yiRUQ3oGvZ3nlgJIAhJonagfjDL2M0WR?= =?iso-8859-1?Q?9/RYPpRI7lq3ZiIl7RNEhYegaiVkDs4YWwOkszA5OKse/kANUiiJN3lYFj?= =?iso-8859-1?Q?kgEk/RmGHc1XUZ6Lrdu+2p8vZRFSyrmsqIGzv9A6pv4WzxnR79SCVB1FW+?= =?iso-8859-1?Q?+1Q4oQ//htRTURe52rpO/NDz+LMfNOv55r4V1Fq2x3NGYxYCWOEBgXsyUI?= =?iso-8859-1?Q?ruXuw75yCvxw0sPJhj9UIUD2URCXFcm/T+7yq7TfYomkuNK293rOCW1ep+?= =?iso-8859-1?Q?fr8u17jLLPefjpNuITTPPqdmPxa6EWF3uv8G25icyUou399lZqRHQsTQh/?= =?iso-8859-1?Q?sUu4EEoLKBRBYEcaleA5hTyUZbgEky8zCrJSRehLzEr9MlOVaLGKVEZx1T?= =?iso-8859-1?Q?DqdyOZddVjsnhpK8=3D?= X-Microsoft-Exchange-Diagnostics: 1;CY1PR0401MB1501;6:J6xROLoD5gvBTU/sN518TQXoAOJTDOXccM0/HNfzPLrPQbBTqOcKwgXHpylHSbM2kMm9Oe8ZGLp04p5TZajsghHyIrDhXf1uA7CMHehBAW0yF9U5s0wHx8LJJwk2lsxMy6HFvSp4EJQmn9FmX417vmJGzxF9MELG+o6hOkJmDqEPXEGWhgfWUssHuCkL5bOsJXMdcQvsqGTU6z0hCvfK7emt76WUkEz7QWRONhazWFGY5hMYtTCjESrlCJ42Kj2CMhrkz/mtfFz0Z+KQxzLl4uwGUxl62KF0XlJ2LGChMnX8SARHbJw+sUaEaUsGhOaR7ww0H8x6qTWjdYU2uU7u1dERsiCENAKy7f62QfzQ1gd4rqbOJray+D3TCwZwWQxztdX6NtNx9EcgvzBCyx0d7UBKvxDR+1Epa8Lv86IW2VY=;5:V3Cmufs0C+1VPJcgtRPp9cnhyDePQmpi16PPAAmwp2/cqoiy9qpAvNQSKlKeTLKX3Y5E9eaW13Wod/F8zWzfk9zhlKoCAy0j7EQzA7hboB0Fk1oMCCaT3zhEpw8/veLVXSJ+Pk19F0QFDhPn6nja/w==;24:Eii0MiPdwkDeImrJWtQHgEh4EnOA65DGJ+vIpnh0MAdryD/eORmsNVToDFHm3ZYTPLOSIAMRGu1EGqDjXfxjL6iTBi1XWCc2zXCd2iN78ZA= SpamDiagnosticOutput: 1:99 SpamDiagnosticMetadata: NSPM X-Microsoft-Exchange-Diagnostics: 1;CY1PR0401MB1501;7:xIV+/X6mzfDi1l7QeIV+hemJaiiOwni6RrUIqlxqfpUYF7/afYHOCg6kAxtbdCIVMh7uaVRh9Un8b3tcWwXIwm2CzBFnZ3evicwb8PxJvnQgBsXOj0mI++29E4xC35NxYblRjEU/luhkCqR4LDzln/Slt1EWeJ62yXT+zFdvydVZ/nde6XGKUPqXBiOh6hgNJ2a2GdqKM4y3CnLbQEfapjE4LVhLQVykgECuA7Kw4KoD0hbyjSq9m5aRabBM7vTBMZTtJwjbefO8MwdW8xyqkMaPh8BE4xGYN9glCA0ev9K0BQlo3tWsTLi7RIv6RMd06Gh4VAE8FzBi+R1P0snqgQ==;20:O2OxovuCigugYdEUD22T0XcWnSKrJpz9r4wfh++PjmjfLI0rLlKgzmAxWwzfpNb7FZX775gSke9QFRSOO+eEumyl/CPOMkrSaezVxYcOI/R/jUJ4TxcLhpnFOuxjEm0vPNKgN2GJOtiE6EyPJJTVLYy8UDP4ZMDdht67ltagb7w= X-OriginatorOrg: sandisk.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 09 Mar 2017 17:20:44.0837 (UTC) X-MS-Exchange-CrossTenant-Id: b61c8803-16f3-4c35-9b17-6f65f441df86 X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=b61c8803-16f3-4c35-9b17-6f65f441df86;Ip=[74.221.232.54];Helo=[sacsmgep14.sandisk.com] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY1PR0401MB1501 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by mail.home.local id v29HejeH008553 On Thu, 2017-03-09 at 11:22 +0100, Thomas Gleixner wrote: > > In contrast with previous tests this morning I have been able to reproduce > > this hang with kernel v4.10. So it's not a kernel v4.10 regression. But the > > hang did not occur in a test with kernel v4.9.7. I assume this means that > > the regression got introduced between the v4.9 and v4.10 kernels. > > Is it always the x86_pkg_thermal init which locks up? Hello Thomas, Apparently not. Here are a few other call traces that appeared in the system log: INFO: task systemd-udevd:748 blocked for more than 480 seconds. Tainted: G IO 4.11.0-rc1-dbg+ #1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. systemd-udevd D 0 748 518 0x00000104 Call Trace: __schedule+0x302/0xc30 schedule+0x38/0x90 schedule_timeout+0x255/0x490 wait_for_completion+0x103/0x170 cpuhp_issue_call+0xb9/0xe0 __cpuhp_setup_state+0xf6/0x180 coretemp_init+0x8d/0x1000 [coretemp] do_one_initcall+0x3e/0x170 do_init_module+0x5a/0x1ed load_module+0x2339/0x2a40 SYSC_finit_module+0xbc/0xf0 SyS_finit_module+0x9/0x10 do_syscall_64+0x57/0x140 entry_SYSCALL64_slow_path+0x25/0x25 Showing all locks held in the system: 2 locks held by khungtaskd/91: #0: (rcu_read_lock){......}, at: [] watchdog+0xa0/0x5d0 #1: (tasklist_lock){.+.?..}, at: [] debug_show_all_locks+0x3d/0x1a0 1 lock held by systemd-udevd/748: #0: (cpu_hotplug.dep_map){++++++}, at: [] get_online_cpus+0x2d/0x80 The call trace below appeared because I ran echo w > /proc/sysrq-trigger to check whether any kernel thread hung: sysrq: SysRq : Show Blocked State task PC stack pid father systemd-udevd D 0 738 505 0x00000104 Call Trace: __schedule+0x302/0xc30 schedule+0x38/0x90 schedule_timeout+0x255/0x490 wait_for_completion+0x103/0x170 cpuhp_issue_call+0xb9/0xe0 __cpuhp_setup_state+0xf6/0x180 kvm_timer_init+0x52/0xd0 [kvm] kvm_arch_init+0xd2/0x180 [kvm] kvm_init+0x1d/0x2b0 [kvm] vmx_init+0x21/0x628 [kvm_intel] do_one_initcall+0x3e/0x170 do_init_module+0x5a/0x1ed load_module+0x2339/0x2a40 SYSC_finit_module+0xbc/0xf0 SyS_finit_module+0x9/0x10 do_syscall_64+0x57/0x140 entry_SYSCALL64_slow_path+0x25/0x25 Bart.