From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751245AbdAaIwd (ORCPT ); Tue, 31 Jan 2017 03:52:33 -0500 Received: from mout.gmx.net ([212.227.17.20]:56894 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751177AbdAaIwO (ORCPT ); Tue, 31 Jan 2017 03:52:14 -0500 Message-ID: <1485852699.4488.0.camel@gmx.de> Subject: Re: WARNING: CPU: 1 PID: 15 at kernel/sched/sched.h:804 assert_clock_updated.isra.62.part.63+0x25/0x27 From: Mike Galbraith To: Ingo Molnar Cc: Matt Fleming , lkml , Peter Zijlstra , Ingo Molnar Date: Tue, 31 Jan 2017 09:51:39 +0100 In-Reply-To: <20170131072839.GA10834@gmail.com> References: <1485588065.4181.7.camel@gmx.de> <20170130115942.GK31613@codeblueprint.co.uk> <1485843569.4423.8.camel@gmx.de> <20170131072839.GA10834@gmail.com> Content-Type: text/plain; charset="us-ascii" X-Mailer: Evolution 3.16.5 Mime-Version: 1.0 Content-Transfer-Encoding: 7bit X-Provags-ID: V03:K0:WD7Z0yIT/W6eA798BHpdg9nH8EfxkvXlR0vFO21I0bR9GAvQfcO veiXgzlFTycWB28bhTRdqUTHI4mS7TBIKWRvqoIiwFk5OntDW3SpMusr5+ppLoNxubvfhuq dcEG2NpF2rlc5bFn2XaYkfg54M6g/FXGMHEhaG4qIcbFxZ7i6vFU0K5TfuLaALFpXMPDa70 8av4e/cvCDYa7yD9x+zIg== X-UI-Out-Filterresults: notjunk:1;V01:K0:w13N/kaun2k=:DEFkEdTF16f/WvaB/uuNuf yNd7A9m0p8bD9qWG0lslnN+mMxunjUnBDZCaE3QKXqJpCvq32RVIN62ADJ3igbFI4hqJaX8Q4 1EMDhG3oZmmM/CKaISmSQKrCikb90k+MQBGaxmRfT/B69m0RVhDrN40uk63IfaTKOvEsqC+mX dSQEhgwkdvVeq0MDtn9Mcp8imgNf6dnlyyvaerxvESPmVsumCjRAbXKvgyaFjZNmASMi0N6rl m7A5xl2N0pWF1ULAF2Su4Ddc2oFekzBpN/HnjnHLqNPOb3zPCBsntbDz9WDkIReC3ln2KBpT4 WSS/WP6nS7QA5IeT3xt3ZQ+KEcwt3gZ+p/2KbqBSHd+SyIQpPBt+s9p8/CI2fSWCOl7lKxSDq XxnetuQZaGcuysAE+RE6lPUfLE4kQBwNaiSO33dMU909OsRhcY/q+VoadB5BjNIkqHbUNF+KL kGmg8UGC3DhRj2mypZpr5xQGztWFcDUE1Vqfzx7UBtGWqyh9Cm6BxGTASbc92+z4GAtS8pL4t vtoWkS6xYlXl3nMVBmgAGDrMOLhw8sEhdDMSmpjJc6QD75XUriWKGXRQR3g8R9eoGPs1Ii4VC PSz1usQhgUyEaLU3xQpEWrEGyaWYJ67/1AgsHDKK4oJY5HwnrP5V2t2eJgLRRw3RY5epKzs63 hslq4d+33QuZvGTrYqSIuWvTx48/VK8n6UgEco4f2f13eXnjeE+dS5AO4XCcfCcSwXuh7pyLQ ZDAWuNUHjskYCB9uIlJqX9vAOfJGafuzuAxwfjdBwTWo/WM5kULEJKo5xbXRctZU3EG4iXmCb AfKohFS Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 2017-01-31 at 08:28 +0100, Ingo Molnar wrote: > * Mike Galbraith wrote: > > > On Mon, 2017-01-30 at 11:59 +0000, Matt Fleming wrote: > > > On Sat, 28 Jan, at 08:21:05AM, Mike Galbraith wrote: > > > > Running Steven's hotplug stress script in tip.today. Config is > > > > NOPREEMPT, tune for maximum build time (enterprise default-ish). > > > > > > > > [ 75.268049] x86: Booting SMP configuration: > > > > [ 75.268052] smpboot: Booting Node 0 Processor 1 APIC 0x2 > > > > [ 75.279994] smpboot: Booting Node 0 Processor 2 APIC 0x4 > > > > [ 75.294617] smpboot: Booting Node 0 Processor 4 APIC 0x1 > > > > [ 75.310698] smpboot: Booting Node 0 Processor 5 APIC 0x3 > > > > [ 75.359056] smpboot: CPU 3 is now offline > > > > [ 75.415505] smpboot: CPU 4 is now offline > > > > [ 75.479985] smpboot: CPU 5 is now offline > > > > [ 75.550674] ------------[ cut here ]------------ > > > > [ 75.550678] WARNING: CPU: 1 PID: 15 at kernel/sched/sched.h:804 > > > > assert_clock_updated.isra.62.part.63+0x25/0x27 > > > > [ 75.550679] rq->clock_update_flags < RQCF_ACT_SKIP > > > > > > The following patch queued in tip/sched/core should fix this issue: > > > > Weeell, I'll have to take your word for it, as tip g35669bb7fd46 grew > > an early boot brick problem. > > That's bad - could you perhaps try to bisect it? All recently queued up patches > that could cause such problems should be readily bisectable. > > The bisection might be faster if you first checked whether 5bf728f02218 works - if > it does then the bug is in the patches in WIP.x86/boot or WIP.x86/fpu. Fast ain't gonna happen, 5bf728f02218 bricked. -Mike