[CentOS] Warning: Your BIOS is broken

[Eero Volotinen]

2013/2/21 Robert Moskowitz <rgm at htt-consult.com>:
> I am getting the following on my 'new box' for my DNS server:
>
> Date: Wed, 20 Feb 2013 13:58:04 -0500
> From:
> To:
> Subject: [abrt] full crash report
> User-Agent: Heirloom mailx 12.4 7/29/08
>
> abrt_version:   2.0.8
> cmdline:        ro root=/dev/mapper/vg_onlo3-root_01 rd_NO_LUKS
> rd_LVM_LV=vg_onlo3/root_01 LANG=en_US.UTF-8
> +rd_NO_MD SYSFONT=latarcyrheb-sun16  KEYBOARDTYPE=pc KEYTABLE=us
> crashkernel=128M rhgb quiet 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:           Wed 20 Feb 2013 01:57:36 PM EST
>
> sosreport.tar.xz: Binary file, 460076 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 v01.04; 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
>
> Should I worry?

yes.

You should update bios ..

--
Eero