Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760137AbXFQLfz (ORCPT ); Sun, 17 Jun 2007 07:35:55 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1758997AbXFQLfo (ORCPT ); Sun, 17 Jun 2007 07:35:44 -0400 Received: from anchor-post-34.mail.demon.net ([194.217.242.92]:3566 "EHLO anchor-post-34.mail.demon.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758772AbXFQLfm (ORCPT ); Sun, 17 Jun 2007 07:35:42 -0400 Date: Sun, 17 Jun 2007 12:35:32 +0100 (BST) From: Mark Fortescue To: William Lee Irwin III cc: Michal Piotrowski , Linus Torvalds , Andrew Morton , LKML , Netdev , Dan Aloni , Chad Tindel , Jay Vosburgh , Stephen Hemminger , sparclinux@vger.kernel.org, David Miller , Mikael Pettersson , linux-pm@lists.linux-foundation.org, "Rafael J. Wysocki" , Pavel Machek , linux-usb-devel@lists.sourceforge.net, Greg Kroah-Hartman , Alex Riesen , Andi Kleen , discuss@x86-64.org, Ioan Ionita Subject: Re: [2/2] 2.6.22-rc4: known regressions v3 In-Reply-To: <20070614142146.GN15426@holomorphy.com> Message-ID: References: <46704923.1010009@googlemail.com> <46704C44.8020602@googlemail.com> <20070614020055.GL15426@holomorphy.com> <20070614142146.GN15426@holomorphy.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1640 Lines: 40 Hi all, I have been investigating the random invalid instruction occourances on sparc32 (sun4c) and identified that the problem was introduced pre-v2.6.22-rc1. v2.6.21 is OK. The first time I have observed the issue so far is after commit b46b8f19c9cd435ecac4d9d12b39d78c137ecd66: Increase slab redzone to 64bits. Prior to this commit there apears to be a problem with the memory management (depmod -a causes the system to run out of memory!) that may be masking the issue. As a result of this, I am going to try to find the 'last known good' commit after v2.6.21 to see if this helps narrow down the cause. Regards Mark Fortescue. On Thu, 14 Jun 2007, William Lee Irwin III wrote: > On Thu, Jun 14, 2007 at 11:30:25AM +0100, Mark Fortescue wrote: >> They apear as soon as simpleinit starts up. Somtimes I get to a login >> prompt before seeing any. Other times, commands in the simpleinit rc >> script fail. >> They do apear to be random. If a command failes, you re-run the command >> and it is OK. Commands seen to fail are basic (depmod, rm cat ..). >> The test I did use the same binaries with both the OK and problem kernels >> so it is not a change to the application code, it is definatly a kernel >> issue. > > This sounds like it may be addressed by benh's ptep_set_access_flags() > fixes. Those fixes are still in -mm, hopefully to hit mainline by 2.6.22. > > > -- wli > - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/