From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-qg0-f49.google.com (mail-qg0-f49.google.com [209.85.192.49]) by kanga.kvack.org (Postfix) with ESMTP id D00DD6B0038 for ; Wed, 5 Aug 2015 14:39:16 -0400 (EDT) Received: by qgj62 with SMTP id 62so11345931qgj.2 for ; Wed, 05 Aug 2015 11:39:16 -0700 (PDT) Received: from resqmta-ch2-11v.sys.comcast.net (resqmta-ch2-11v.sys.comcast.net. [2001:558:fe21:29:69:252:207:43]) by mx.google.com with ESMTPS id 141si6709617qhg.26.2015.08.05.11.39.14 for (version=TLSv1.2 cipher=RC4-SHA bits=128/128); Wed, 05 Aug 2015 11:39:15 -0700 (PDT) References: <55C18D2E.4030009@rjmx.net> <20150805162436.GD25159@twins.programming.kicks-ass.net> In-Reply-To: <20150805162436.GD25159@twins.programming.kicks-ass.net> Mime-Version: 1.0 (1.0) Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii Message-Id: <81C750EC-F4D4-4890-894A-1D92E5CF3A31@rjmx.net> From: Ron Murray Subject: Re: PROBLEM: 4.1.4 -- Kernel Panic on shutdown Date: Wed, 5 Aug 2015 14:38:57 -0400 Sender: owner-linux-mm@kvack.org List-ID: To: Peter Zijlstra Cc: Christoph Lameter , Pekka Enberg , David Rientjes , Joonsoo Kim , Andrew Morton , "linux-mm@kvack.org" , Ingo Molnar > On Aug 5, 2015, at 12:24, Peter Zijlstra wrote: >=20 > 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 >>=20 >> 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 als= o >> be that memory was somehow corrupted. >>=20 >> The backtrace shows that this is a call occurring in the >> scheduler. >>=20 >> CCing scheduler developers. >=20 > I'll go have a look; but the obvious question is, what's the last known > good kernel? >=20 >>=20 >>=20 4.0.x series still work for me. I had wondered about a memory fault (on the i= dea that a small shift in memory position might hit the fault), but memtest8= 6 turned up nothing. I will try re-compiling to use the SLAB allocator and see if that helps. .....Ron -- Ron Murray PGP Fingerprint: 0ED0 C1D1 615C FCCE 7424 9B27 31D8 AED5 AF6D 0D4A -- 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