From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wi0-f182.google.com (mail-wi0-f182.google.com [209.85.212.182]) by kanga.kvack.org (Postfix) with ESMTP id A67736B0038 for ; Wed, 5 Aug 2015 12:24:43 -0400 (EDT) Received: by wicne3 with SMTP id ne3so11692503wic.1 for ; Wed, 05 Aug 2015 09:24:43 -0700 (PDT) Received: from casper.infradead.org (casper.infradead.org. [2001:770:15f::2]) by mx.google.com with ESMTPS id cp9si29426520wib.95.2015.08.05.09.24.40 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 05 Aug 2015 09:24:41 -0700 (PDT) Date: Wed, 5 Aug 2015 18:24:36 +0200 From: Peter Zijlstra Subject: Re: PROBLEM: 4.1.4 -- Kernel Panic on shutdown Message-ID: <20150805162436.GD25159@twins.programming.kicks-ass.net> References: <55C18D2E.4030009@rjmx.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Sender: owner-linux-mm@kvack.org List-ID: To: Christoph Lameter Cc: Ron Murray , Pekka Enberg , David Rientjes , Joonsoo Kim , Andrew Morton , linux-mm@kvack.org, Ingo Molnar On Wed, Aug 05, 2015 at 11:09:22AM -0500, Christoph Lameter wrote: > > [1.] One line summary of the problem: > > 4.1.4 -- Kernel Panic on shutdown > > This is a kfree of an object that was not allocated via the slab > allocators or was already freed. If you boot with the kernel command line > argument "slub_debug" then you could get some more information. Could also > be that memory was somehow corrupted. > > The backtrace shows that this is a call occurring in the > scheduler. > > CCing scheduler developers. I'll go have a look; but the obvious question is, what's the last known good kernel? > > Call Trace: > > [] free_sched_group+0x29/0x30 > [] free_sched_group+rcu+0x10/0x20 > [] rcu_process_callbacks+0x231/0x510 > [] __do_softirq+0xee/0x1e0 > [] irq_exit+0x55/0x60 > [] smp_apic_timer_interrupt+0x45/0x60 > [] apic_timer_interrupt+0x6b/0x70 > > [] ? finish_task_switch+0x61/0x100 > [] ? cpuidle_enter_state+0xad/0x170 > [] ? cpuidle_enter_state+0xa6/0x170 > [] cpuidle_enter+0x12/0x20 > [] cpu_startup_entry+0x268/0x2e0 > [] start_secondary+0x167/0x170 > -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org