On 2/21/2013 3:20 PM, Robert Moskowitz wrote:

...

:Hardware name: HP Compaq dc7800 Small Form Factor ...

...

...

Should I worry?

yes.

You should update bios .

hmmm, thats a 2007 vintage economy business desktop ?

looks to be a December 2011 rev 1.32A BIOS, here http://h20000.www2.hp.com/bizsupport/TechSupport/SoftwareDescription.jsp?lan...

reading the release notes, the rev /after/ the one you have may have fixed a bunch of ACPI stuff, which is what your error sounds like its complaining about.

On 02/21/2013 06:55 PM, John R Pierce wrote:

On 2/21/2013 3:20 PM, Robert Moskowitz wrote:

...

...

:Hardware name: HP Compaq dc7800 Small Form Factor ...

...

...

Should I worry?

yes.

You should update bios .

hmmm, thats a 2007 vintage economy business desktop ?

looks to be a December 2011 rev 1.32A BIOS, here http://h20000.www2.hp.com/bizsupport/TechSupport/SoftwareDescription.jsp?lan...

reading the release notes, the rev /after/ the one you have may have fixed a bunch of ACPI stuff, which is what your error sounds like its complaining about.

Well that did not do it. I had bought 2 of these systems, so I started up the second one and upgarded the bios and still....

Wonder why it is upset about the firmware returning all ones?

From user@localhost.htt-consult.com Fri Feb 22 04:26:45 2013 Return-Path: user@localhost.htt-consult.com X-Original-To: root@localhost Delivered-To: root@localhost.htt-consult.com Received: by rigel.htt-consult.com (Postfix, from userid 0) id 14C782A07E5; Fri, 22 Feb 2013 04:26:44 -0500 (EST) Date: Fri, 22 Feb 2013 04:26:44 -0500 From: user@localhost.htt-consult.com To: root@localhost.htt-consult.com Subject: [abrt] full crash report Message-ID: 512739d4.KXca2pRkj8H/d/90%user@localhost User-Agent: Heirloom mailx 12.4 7/29/08 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit

abrt_version: 2.0.8 cmdline: ro root=/dev/mapper/vg_rigel-root_01 rd_NO_LUKS LANG=en_US.UTF-8 rd_NO_MD SYSFONT=latarcyrheb-sun16 crashkernel=129M@0M rd_LVM_LV=vg_rigel/root_01 KEYBOARDTYPE=pc KEYTABLE=us rd_NO_DM rhgb quiet kernel: 2.6.32-279.22.1.el6.i686 not-reportable: Your BIOS is broken reason: WARNING: at drivers/pci/dmar.c:594 warn_invalid_dmar+0x7f/0xa0() (Tainted: G I--------------- ) time: Fri 22 Feb 2013 04:26:20 AM EST

sosreport.tar.xz: Binary file, 372716 bytes

backtrace: :WARNING: at drivers/pci/dmar.c:594 warn_invalid_dmar+0x7f/0xa0() (Tainted: G I--------------- ) :Hardware name: HP Compaq dc7800 Small Form Factor :[Firmware Warn]: Your BIOS is broken; DMAR reported at address fed90000 returns all ones! :BIOS vendor: Hewlett-Packard; Ver: 786F1 v01.32; Product Version: :Modules linked in: :Pid: 1, comm: swapper Tainted: G I--------------- 2.6.32-279.22.1.el6.i686 #1 :Call Trace: :[<c0455141>] ? warn_slowpath_common+0x81/0xc0 :[<c06217ff>] ? warn_invalid_dmar+0x7f/0xa0 :[<c06217ff>] ? warn_invalid_dmar+0x7f/0xa0 :[<c04551d3>] ? warn_slowpath_fmt_taint+0x33/0x40 :[<c06217ff>] ? warn_invalid_dmar+0x7f/0xa0 :[<c0621a3b>] ? alloc_iommu+0x21b/0x280 :[<c051c0c7>] ? kmem_cache_alloc_trace+0x107/0x110 :[<c06601b5>] ? acpi_get_table_with_size+0x48/0x98 :[<c0abe0f9>] ? dmar_table_init+0x1b3/0x333 :[<c0a9fee1>] ? pci_iommu_init+0x0/0xd :[<c0abee49>] ? intel_iommu_init+0x12/0x351 :[<c0abd6c0>] ? pci_apply_final_quirks+0x0/0x28 :[<c060faa8>] ? pci_get_device+0x18/0x20 :[<c0a9fee6>] ? pci_iommu_init+0x5/0xd :[<c040303f>] ? do_one_initcall+0x2f/0x1c0 :[<c0a97434>] ? kernel_init+0x1e4/0x23a :[<c0a97250>] ? kernel_init+0x0/0x23a :[<c0409f1f>] ? kernel_thread_helper+0x7/0x10

From user@localhost.htt-consult.com Fri Feb 22 04:26:54 2013 Return-Path: user@localhost.htt-consult.com X-Original-To: root@localhost Delivered-To: root@localhost.htt-consult.com Received: by rigel.htt-consult.com (Postfix, from userid 0) id 917F92A07E5; Fri, 22 Feb 2013 04:26:54 -0500 (EST) Date: Fri, 22 Feb 2013 04:26:54 -0500 From: user@localhost.htt-consult.com To: root@localhost.htt-consult.com Subject: [abrt] full crash report Message-ID: 512739de.aCfyit94nySQjkGN%user@localhost User-Agent: Heirloom mailx 12.4 7/29/08 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit

abrt_version: 2.0.8 cmdline: ro root=/dev/mapper/vg_rigel-root_01 rd_NO_LUKS LANG=en_US.UTF-8 rd_NO_MD SYSFONT=latarcyrheb-sun16 crashkernel=129M@0M rd_LVM_LV=vg_rigel/root_01 KEYBOARDTYPE=pc KEYTABLE=us rd_NO_DM rhgb quiet kernel: 2.6.32-279.22.1.el6.i686 not-reportable: Your BIOS is broken reason: WARNING: at drivers/pci/dmar.c:594 warn_invalid_dmar+0x7f/0xa0() (Not tainted) time: Fri 22 Feb 2013 04:26:20 AM EST

sosreport.tar.xz: Binary file, 374540 bytes

backtrace: :WARNING: at drivers/pci/dmar.c:594 warn_invalid_dmar+0x7f/0xa0() (Not tainted) :Hardware name: HP Compaq dc7800 Small Form Factor :[Firmware Warn]: Your BIOS is broken; DMAR reported at address fed90000 returns all ones! :BIOS vendor: Hewlett-Packard; Ver: 786F1 v01.32; Product Version: :Modules linked in: :Pid: 0, comm: swapper Not tainted 2.6.32-279.22.1.el6.i686 #1 :Call Trace: :[<c0455141>] ? warn_slowpath_common+0x81/0xc0 :[<c06217ff>] ? warn_invalid_dmar+0x7f/0xa0 :[<c06217ff>] ? warn_invalid_dmar+0x7f/0xa0 :[<c04551d3>] ? warn_slowpath_fmt_taint+0x33/0x40 :[<c06217ff>] ? warn_invalid_dmar+0x7f/0xa0 :[<c0abdeb8>] ? check_zero_address+0xfb/0x132 :[<c06608b7>] ? acpi_tb_verify_table+0x1d/0x46 :[<c0abdefd>] ? detect_intel_iommu+0xe/0x57 :[<c0aae15b>] ? mem_init+0x10/0x2ab :[<c0828e00>] ? rcu_init_percpu_data.clone.0+0x87/0xa1 :[<c0828e00>] ? rcu_init_percpu_data.clone.0+0x87/0xa1 :[<c0828e00>] ? rcu_init_percpu_data.clone.0+0x87/0xa1 :[<c0828e00>] ? rcu_init_percpu_data.clone.0+0x87/0xa1 :[<c0828e00>] ? rcu_init_percpu_data.clone.0+0x87/0xa1 :[<c0828e00>] ? rcu_init_percpu_data.clone.0+0x87/0xa1 :[<c082ee00>] ? die_nmi+0x80/0xf0 :[<c082ee00>] ? die_nmi+0x80/0xf0 :[<c0828e00>] ? rcu_init_percpu_data.clone.0+0x87/0xa1 :[<c0828e00>] ? rcu_init_percpu_data.clone.0+0x87/0xa1 :[<c0a9781d>] ? start_kernel+0x1d1/0x3b5 :[<c0a9748a>] ? unknown_bootoption+0x0/0x190

From user@localhost.htt-consult.com Fri Feb 22 04:57:19 2013 Return-Path: user@localhost.htt-consult.com X-Original-To: root@localhost Delivered-To: root@localhost.htt-consult.com Received: by rigel.htt-consult.com (Postfix, from userid 0) id 73F032A0808; Fri, 22 Feb 2013 04:57:19 -0500 (EST) Date: Fri, 22 Feb 2013 04:57:19 -0500 From: user@localhost.htt-consult.com To: root@localhost.htt-consult.com Subject: [abrt] full crash report Message-ID: 512740ff.mQ6uowfapUKXW57u%user@localhost User-Agent: Heirloom mailx 12.4 7/29/08 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit

abrt_version: 2.0.8 cmdline: ro root=/dev/mapper/vg_rigel-root_01 rd_NO_LUKS LANG=en_US.UTF-8 rd_NO_MD SYSFONT=latarcyrheb-sun16 crashkernel=128M rd_LVM_LV=vg_rigel/root_01 KEYBOARDTYPE=pc KEYTABLE=us rd_NO_DM rhgb quiet kernel: 2.6.32-279.22.1.el6.i686 not-reportable: Your BIOS is broken reason: WARNING: at drivers/pci/dmar.c:594 warn_invalid_dmar+0x7f/0xa0() (Tainted: G I--------------- ) time: Fri 22 Feb 2013 04:57:02 AM EST

sosreport.tar.xz: Binary file, 397448 bytes

backtrace: :WARNING: at drivers/pci/dmar.c:594 warn_invalid_dmar+0x7f/0xa0() (Tainted: G I--------------- ) :Hardware name: HP Compaq dc7800 Small Form Factor :[Firmware Warn]: Your BIOS is broken; DMAR reported at address fed90000 returns all ones! :BIOS vendor: Hewlett-Packard; Ver: 786F1 v01.32; Product Version: :Modules linked in: :Pid: 1, comm: swapper Tainted: G I--------------- 2.6.32-279.22.1.el6.i686 #1 :Call Trace: :[<c0455141>] ? warn_slowpath_common+0x81/0xc0 :[<c06217ff>] ? warn_invalid_dmar+0x7f/0xa0 :[<c06217ff>] ? warn_invalid_dmar+0x7f/0xa0 :[<c04551d3>] ? warn_slowpath_fmt_taint+0x33/0x40 :[<c06217ff>] ? warn_invalid_dmar+0x7f/0xa0 :[<c0621a3b>] ? alloc_iommu+0x21b/0x280 :[<c051c0c7>] ? kmem_cache_alloc_trace+0x107/0x110 :[<c06601b5>] ? acpi_get_table_with_size+0x48/0x98 :[<c0abe0f9>] ? dmar_table_init+0x1b3/0x333 :[<c0a9fee1>] ? pci_iommu_init+0x0/0xd :[<c0abee49>] ? intel_iommu_init+0x12/0x351 :[<c0abd6c0>] ? pci_apply_final_quirks+0x0/0x28 :[<c060faa8>] ? pci_get_device+0x18/0x20 :[<c0a9fee6>] ? pci_iommu_init+0x5/0xd :[<c040303f>] ? do_one_initcall+0x2f/0x1c0 :[<c0a97434>] ? kernel_init+0x1e4/0x23a :[<c0a97250>] ? kernel_init+0x0/0x23a :[<c0409f1f>] ? kernel_thread_helper+0x7/0x10

From user@localhost.htt-consult.com Fri Feb 22 04:57:27 2013 Return-Path: user@localhost.htt-consult.com X-Original-To: root@localhost Delivered-To: root@localhost.htt-consult.com Received: by rigel.htt-consult.com (Postfix, from userid 0) id 762FD2A07DA; Fri, 22 Feb 2013 04:57:27 -0500 (EST) Date: Fri, 22 Feb 2013 04:57:27 -0500 From: user@localhost.htt-consult.com To: root@localhost.htt-consult.com Subject: [abrt] full crash report Message-ID: 51274107.Hut1bOV1QJbwoGhZ%user@localhost User-Agent: Heirloom mailx 12.4 7/29/08 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit

abrt_version: 2.0.8 cmdline: ro root=/dev/mapper/vg_rigel-root_01 rd_NO_LUKS LANG=en_US.UTF-8 rd_NO_MD SYSFONT=latarcyrheb-sun16 crashkernel=128M rd_LVM_LV=vg_rigel/root_01 KEYBOARDTYPE=pc KEYTABLE=us rd_NO_DM rhgb quiet kernel: 2.6.32-279.22.1.el6.i686 not-reportable: Your BIOS is broken reason: WARNING: at drivers/pci/dmar.c:594 warn_invalid_dmar+0x7f/0xa0() (Not tainted) time: Fri 22 Feb 2013 04:57:02 AM EST

sosreport.tar.xz: Binary file, 399364 bytes

backtrace: :WARNING: at drivers/pci/dmar.c:594 warn_invalid_dmar+0x7f/0xa0() (Not tainted) :Hardware name: HP Compaq dc7800 Small Form Factor :[Firmware Warn]: Your BIOS is broken; DMAR reported at address fed90000 returns all ones! :BIOS vendor: Hewlett-Packard; Ver: 786F1 v01.32; Product Version: :Modules linked in: :Pid: 0, comm: swapper Not tainted 2.6.32-279.22.1.el6.i686 #1 :Call Trace: :[<c0455141>] ? warn_slowpath_common+0x81/0xc0 :[<c06217ff>] ? warn_invalid_dmar+0x7f/0xa0 :[<c06217ff>] ? warn_invalid_dmar+0x7f/0xa0 :[<c04551d3>] ? warn_slowpath_fmt_taint+0x33/0x40 :[<c06217ff>] ? warn_invalid_dmar+0x7f/0xa0 :[<c0abdeb8>] ? check_zero_address+0xfb/0x132 :[<c06608b7>] ? acpi_tb_verify_table+0x1d/0x46 :[<c0abdefd>] ? detect_intel_iommu+0xe/0x57 :[<c0aae15b>] ? mem_init+0x10/0x2ab :[<c0828e00>] ? rcu_init_percpu_data.clone.0+0x87/0xa1 :[<c0828e00>] ? rcu_init_percpu_data.clone.0+0x87/0xa1 :[<c0828e00>] ? rcu_init_percpu_data.clone.0+0x87/0xa1 :[<c0828e00>] ? rcu_init_percpu_data.clone.0+0x87/0xa1 :[<c0828e00>] ? rcu_init_percpu_data.clone.0+0x87/0xa1 :[<c0828e00>] ? rcu_init_percpu_data.clone.0+0x87/0xa1 :[<c082ee00>] ? die_nmi+0x80/0xf0 :[<c082ee00>] ? die_nmi+0x80/0xf0 :[<c0828e00>] ? rcu_init_percpu_data.clone.0+0x87/0xa1 :[<c0828e00>] ? rcu_init_percpu_data.clone.0+0x87/0xa1 :[<c0a9781d>] ? start_kernel+0x1d1/0x3b5 :[<c0a9748a>] ? unknown_bootoption+0x0/0x190

On 02/22/2013 01:38 PM, John R Pierce wrote:

On 2/21/2013 12:43 PM, Robert Moskowitz wrote:

...

:[Firmware Warn]: Your BIOS is broken; DMAR reported at address fed90000 returns all ones!

I googled "Your BIOS is broken; DMAR reported at address fed90000 returns all ones!" and got some related results.

My search fu was weak. Very weak.

this bug report (on FC12) says... "yes, your bios is broken, but its not a bug, we worked around it" https://bugzilla.redhat.com/show_bug.cgi?id=896652

Well since Centos 6 is about equiv to F12, I guess I can 'live' with claim. But then, how to stop the constant error reporting?

on a similar/identical bug with Fedora FC17, someone suggested booting with iommu=off to work around this.

Where do I add this?

on a similar debian bug report, it was stated that this error only happened when the BIOS setting for "VT-d" was enabled. VT-d is only used to virtualized complete IO cards (like, dedicating a specified PCI-Express device to a given VM rather than handling it in the host and virtualizing the logical device). If your BIOS has an option to turn VT-d off, you might try that.

I did a bit of googling to figure out where this might be in my bios and found:

http://jaredlxl.blogspot.com/2009/04/enable-amt-on-hp-dc7800-dc7900.html

Which took me to the right place in the bios and I see it already disabled. So next is to try the iommu=off option.

Thanks for researching this for me.