From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932153AbbHMU7l (ORCPT ); Thu, 13 Aug 2015 16:59:41 -0400 Received: from userp1040.oracle.com ([156.151.31.81]:22989 "EHLO userp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932090AbbHMU7k (ORCPT ); Thu, 13 Aug 2015 16:59:40 -0400 Message-ID: <55CD0515.3090404@oracle.com> Date: Thu, 13 Aug 2015 16:59:01 -0400 From: Sasha Levin User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.7.0 MIME-Version: 1.0 To: Peter Zijlstra CC: hpa@zytor.com, torvalds@linux-foundation.org, efault@gmx.de, tglx@linutronix.de, linux-kernel@vger.kernel.org, mingo@kernel.org, linux-tip-commits@vger.kernel.org Subject: Re: [tip:sched/core] sched: Change the sched_class::set_cpus_allowed( ) calling context References: <20150515154833.667516139@infradead.org> <55CCE638.3030907@oracle.com> <20150813203732.GF16853@twins.programming.kicks-ass.net> In-Reply-To: <20150813203732.GF16853@twins.programming.kicks-ass.net> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit X-Source-IP: userv0022.oracle.com [156.151.31.74] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 08/13/2015 04:37 PM, Peter Zijlstra wrote: > On Thu, Aug 13, 2015 at 02:47:20PM -0400, Sasha Levin wrote: >> > [79817.224383] bad: scheduling from the idle thread! >> > [79817.224900] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.2.0-rc6-next-20150813-sasha-00040-g059fd6d #2431 >> > [79817.225709] ffffffffae0c6320 ffff880051b77c00 ffffffffade7f739 ffff8800a69e15c0 >> > [79817.226419] ffff880051b77c18 ffffffffa43c4ed3 ffff880051be8000 ffff880051b77c48 >> > [79817.227122] ffffffffa43a7ffb ffff880051be8000 ffff8800a69e15c0 ffffffffae094d40 >> > [79817.227806] Call Trace: >> > [79817.228039] dump_stack (lib/dump_stack.c:52) >> > [79817.228503] dequeue_task_idle (kernel/sched/idle_task.c:45) >> > [79817.229005] dequeue_task (kernel/sched/core.c:839) >> > [79817.229485] do_set_cpus_allowed (kernel/sched/core.c:1178 (discriminator 9)) >> > [79817.230006] init_idle (kernel/sched/core.c:4937) >> > [79817.230467] idle_thread_get (kernel/smpboot.c:35) > Dhurr.. so oddly enough my actual hardware boots without issue. > > But I can see how that could go wrong, does the below make your > (virtual) machine happy again? Seems to work fine now, thanks! Thanks, Sasha