Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758770AbYCTSjn (ORCPT ); Thu, 20 Mar 2008 14:39:43 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1757461AbYCTSjc (ORCPT ); Thu, 20 Mar 2008 14:39:32 -0400 Received: from e4.ny.us.ibm.com ([32.97.182.144]:49023 "EHLO e4.ny.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757542AbYCTSjb (ORCPT ); Thu, 20 Mar 2008 14:39:31 -0400 Date: Fri, 21 Mar 2008 00:12:16 +0530 From: Sudhir Kumar To: Paul Mackerras Cc: skumar@linux.vnet.ibm.com, linux-kernel@vger.kernel.org, Poornima Nayak , linuxppc-dev@ozlabs.org, akpm@linux-foundation.org Subject: Re: [BUG]2.6.25-rc6:Unable to handle kernel paging request Message-ID: <20080320184216.GB32259@in.ibm.com> Reply-To: skumar@linux.vnet.ibm.com References: <20080318052921.GA32259@in.ibm.com> <18400.36670.5918.566965@cargo.ozlabs.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <18400.36670.5918.566965@cargo.ozlabs.ibm.com> User-Agent: Mutt/1.5.13 (2006-08-11) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1565 Lines: 43 On Wed, Mar 19, 2008 at 02:57:50PM +1100, Paul Mackerras wrote: > Sudhir Kumar writes: > > > Unable to handle kernel paging request for data at address > > 0xd00008000000002e > > Looks like some driver tried to access I/O port 0x2e without checking > whether there was possibly anything there first. > > > Faulting instruction address: 0xc00000000074ded8 > > cpu 0x0: Vector: 300 (Data Access) at [c00000003e073aa0] > > pc: c00000000074ded8: .f71805f_find+0x44/0x32c > > lr: c00000000074e1f8: .f71805f_init+0x38/0x194 > > sp: c00000003e073d20 > > msr: 8000000000009032 > > dar: d00008000000002e > > dsisr: 42000000 > > current = 0xc0000000220851c0 > > paca = 0xc0000000007c2700 > > pid = 1, comm = swapper > > enter ? for help > > [c00000003e073dc0] c00000000074e1f8 .f71805f_init+0x38/0x194 > > Looks like it might be the f71805f driver, whatever that is... > Hmmm, drivers/hwmon/f71805f.c looks like it, and indeed it does go > poking around in PCI I/O space with no checks whatever. > > I suggest you turn off CONFIG_SENSORS_F71805F. It was a new feature so I turned it on while compiling. I have tried by turning off CONFIG_SENSORS_F71805F but the bug is still present. > > It doesn't help, of course, that CONFIG_HWMON defaults to y. :( > > Paul. Thanks Sudhir Kumar ISTL IBM -- 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/