Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753191AbaBLQVo (ORCPT ); Wed, 12 Feb 2014 11:21:44 -0500 Received: from g4t0015.houston.hp.com ([15.201.24.18]:45072 "EHLO g4t0015.houston.hp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752922AbaBLQVk (ORCPT ); Wed, 12 Feb 2014 11:21:40 -0500 Message-ID: <1392221703.5612.164.camel@misato.fc.hp.com> Subject: Re: [BUG] can't boot up: unable to handle kernel paging request at ffffffffff340003 From: Toshi Kani To: Matt Fleming Cc: Madper Xie , Matt Fleming , "linux-kernel@vger.kernel.org" , "linux-efi@vger.kernel.org" , Matthew Garrett , "Rafael J. Wysocki" , Josh Triplett Date: Wed, 12 Feb 2014 09:15:03 -0700 In-Reply-To: <20140211141846.GA1725@console-pimps.org> References: <8738jr5t3e.fsf@redhat.com> <20140210175246.GB2887@console-pimps.org> <87mwhy8iaj.fsf@redhat.com> <20140211131640.GD2887@console-pimps.org> <87lhxh69u0.fsf@redhat.com> <20140211141846.GA1725@console-pimps.org> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.8.5 (3.8.5-2.fc19) Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 2014-02-11 at 14:18 +0000, Matt Fleming wrote: > (Entering the realm of ACPI, pulling in more folks) > > On Tue, 11 Feb, at 09:47:57PM, Madper Xie wrote: > > Thanks for your reply. I attached the all the dmesg outputs for you. > > [ 0.000000] ACPI: BGRT 00000000d9bb5100 00003C (v00 HPQOEM SLIC-BPC 01072009 AMI 00010013) > > Your BGRT table has an extra 4 bytes for some reason, (0x3C should be > 0x38) and doesn't match the defintion in include/acpi/actbl3.h, > > > struct acpi_table_bgrt { > struct acpi_table_header header; /* Common ACPI table header */ > u16 version; > u8 status; > u8 image_type; > u64 image_address; > u32 image_offset_x; > u32 image_offset_y; > }; > > > which explains why when we dereference ->image_address we don't get a > sensible value. > > Guys, what do you make of this? Firmware bug? Full thread here, > > http://article.gmane.org/gmane.linux.kernel.efi/3499 > Hi Matt, Yes, I agree that the table size should be 0x38. However, ACPI spec states that bit0 of status indicates if the boot image graphic is valid. This bit is set to 0 (invalid) on the system. Can you check this bit and return when invalid? Thanks, -Toshi -- 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/