Bug 683308

Summary: when I start the computer,this error appeared: "Your BIOS is broken"
Product: [Fedora] Fedora Reporter: dryk <81567109>
Component: kernelAssignee: Kernel Maintainer List <kernel-maint>
Status: CLOSED NOTABUG QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: rawhideCC: gansalmon, itamar, jonathan, kernel-maint, madhu.chinakonda
Target Milestone: ---   
Target Release: ---   
Hardware: i686   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2011-03-25 05:21:05 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:

Description dryk 2011-03-09 04:36:11 UTC 
Package:    	kernel
Latest Crash:	2011年03月09日 星期三 09时08分40秒
Command:    	not_applicable
Reason:     	WARNING: at drivers/pci/dmar.c:633 warn_invalid_dmar+0x65/0x77()
Comment:    	None

WARNING: at drivers/pci/dmar.c:633 warn_invalid_dmar+0x65/0x77()
Hardware name: HP Compaq dc7900 Convertible Minitower
Your BIOS is broken; DMAR reported at address fed90000 returns all ones!
BIOS vendor: Hewlett-Packard; Ver: 786G1 v01.16; Product Version:  
Modules linked in:
Pid: 0, comm: swapper Not tainted 2.6.35.6-45.fc14.i686 #1
Call Trace:
 [<c043938d>] warn_slowpath_common+0x6a/0x7f
 [<c05d4cc0>] ? warn_invalid_dmar+0x65/0x77
 [<c04393e6>] warn_slowpath_fmt_taint+0x2c/0x30
 [<c05d4cc0>] warn_invalid_dmar+0x65/0x77
 [<c0a4337b>] check_zero_address+0xbc/0xf2
 [<c0a433c2>] detect_intel_iommu+0x11/0x69
 [<c0a22d48>] pci_iommu_alloc+0x8/0xa
 [<c0a2ff52>] mem_init+0xe/0x239
 [<c0a1d645>] start_kernel+0x1b8/0x34f
 [<c0a1d1f7>] ? unknown_bootoption+0x0/0x18d
 [<c0a1d0c9>] i386_start_kernel+0xc9/0xd0
Comment 1 Chuck Ebbert 2011-03-25 05:21:05 UTC 
(In reply to comment #1)
> WARNING: at drivers/pci/dmar.c:633 warn_invalid_dmar+0x65/0x77()
> Hardware name: HP Compaq dc7900 Convertible Minitower
> Your BIOS is broken; DMAR reported at address fed90000 returns all ones!
> BIOS vendor: Hewlett-Packard; Ver: 786G1 v01.16; Product Version:  

It means what it says, your BIOS is broken. It's only a warning and the system should continue to function after that.