From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754344Ab0FFVGM (ORCPT ); Sun, 6 Jun 2010 17:06:12 -0400 Received: from mail-pv0-f174.google.com ([74.125.83.174]:54110 "EHLO mail-pv0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752842Ab0FFVGL (ORCPT ); Sun, 6 Jun 2010 17:06:11 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:user-agent:mime-version:to:cc:subject :references:in-reply-to:content-type:content-transfer-encoding; b=Lucc7DfsUvj6y9gIPqEYjWGYiofHE2yeyK7Fgp8x9DbW1sopRzDOVVfbMoVwOyT3aV L9w3y0U9PKYvKsg3laAMwNjaQG3ee6LkOM5lWC9bzgC/zybtlQbItDDjGLfeijiVQqr/ V4J985Qedqb6UVJuGpZDzDslrHdFFaTMupJlw= Message-ID: <4C0C0DD8.5030106@gmail.com> Date: Sun, 06 Jun 2010 14:06:32 -0700 From: "Justin P. Mattock" User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.4pre) Gecko/20091114 Lightning/1.0pre Thunderbird/3.0b4 MIME-Version: 1.0 To: Jiri Slaby CC: Linux Kernel Mailing List , the arch/x86 maintainers , linux-video@atrey.karlin.mff.cuni.cz, frankpzh@gmail.com Subject: Re: BUG kmalloc-4096: Poison overwritten References: <4C0B3C5B.5040703@gmail.com> <4C0B3FDF.6080303@gmail.com> In-Reply-To: <4C0B3FDF.6080303@gmail.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 06/05/2010 11:27 PM, Jiri Slaby wrote: > On 06/06/2010 08:12 AM, Justin P. Mattock wrote: >> ============================================================================= >> >> [ 0.002046] BUG kmalloc-4096: Poison overwritten >> [ 0.002051] >> ----------------------------------------------------------------------------- >> >> [ 0.002052] >> [ 0.002063] INFO: 0xffff88003ec09e00-0xffff88003ec09e9f. First byte >> 0x20 instead of 0x6b >> [ 0.002073] INFO: Slab 0xffffea0000dba1c0 objects=7 used=1 >> fp=0xffff88003ec09048 flags=0x40000000000040c3 >> [ 0.002082] INFO: Object 0xffff88003ec09048 @offset=4168 >> fp=0xffff88003ec0a090 >> [ 0.002083] >> [ 0.002093] Bytes b4 0xffff88003ec09038: 00 00 00 00 00 00 00 00 5a >> 5a 5a 5a 5a 5a 5a 5a ........ZZZZZZZZ >> [ 0.002114] Object 0xffff88003ec09048: 6b 6b 6b 6b 6b 6b 6b 6b 6b >> 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk > ... >> 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk >> [ 0.002999] Object 0xffff88003ec09df8: 6b 6b 6b 6b 6b 6b 6b 6b 20 >> 07 20 07 20 07 20 07 kkkkkkkk........ >> [ 0.002999] Object 0xffff88003ec09e08: 20 07 20 07 20 07 20 07 20 >> 07 20 07 20 07 20 07 ................ >> [ 0.002999] Object 0xffff88003ec09e18: 20 07 20 07 20 07 20 07 20 >> 07 20 07 20 07 20 07 ................ >> [ 0.002999] Object 0xffff88003ec09e28: 20 07 20 07 20 07 20 07 20 >> 07 20 07 20 07 20 07 ................ >> [ 0.002999] Object 0xffff88003ec09e38: 20 07 20 07 20 07 20 07 20 >> 07 20 07 20 07 20 07 ................ >> [ 0.002999] Object 0xffff88003ec09e48: 20 07 20 07 20 07 20 07 20 >> 07 20 07 20 07 20 07 ................ >> [ 0.002999] Object 0xffff88003ec09e58: 20 07 20 07 20 07 20 07 20 >> 07 20 07 20 07 20 07 ................ >> [ 0.002999] Object 0xffff88003ec09e68: 20 07 20 07 20 07 20 07 20 >> 07 20 07 20 07 20 07 ................ >> [ 0.002999] Object 0xffff88003ec09e78: 20 07 20 07 20 07 20 07 20 >> 07 20 07 20 07 20 07 ................ >> [ 0.002999] Object 0xffff88003ec09e88: 20 07 20 07 20 07 20 07 20 >> 07 20 07 20 07 20 07 ................ >> [ 0.002999] Object 0xffff88003ec09e98: 20 07 20 07 20 07 20 07 6b >> 6b 6b 6b 6b 6b 6b 6b ........kkkkkkkk >> [ 0.002999] Object 0xffff88003ec09ea8: 6b 6b 6b 6b 6b 6b 6b 6b 6b > > Just guessing, grey spaces which should go to video ram? > o.k. I bisected this down to this commit: 962400e8fd29 reverting gets dmesg to not have a Poison overwritten.. as for the screen blankness I think this did cause it..keep in mind the blankness(black) is not everytime(every so often) here's some images of it: http://www.flickr.com/photos/44066293@N08/4676350524/ http://www.flickr.com/photos/44066293@N08/4676350016/ (and some other images of frisco for your enjoyment!!) Justin P. Mattock