Since upgrade to testing-kernel 2.6.29.1-30.fc10.x86_64 i get the following stack-trace every boot on my notebook 2.6.29-10 and 2.6.29.1-15 which i used before had no oops ___________ ------------[ cut here ]------------ WARNING: at drivers/pci/dmar.c:182 dmar_table_init+0x12f/0x29a() (Not tainted) Hardware name: HP Compaq 6830s Your BIOS is broken; DMAR reported at address zero! BIOS vendor: Hewlett-Packard; Ver: 68PZD Ver. F.09; Product Version: F.09 Modules linked in: Pid: 1, comm: swapper Not tainted 2.6.29.1-30.fc10.x86_64 #1 Call Trace: [<ffffffff810496d9>] warn_slowpath+0xb9/0xfe [<ffffffff8104a1f6>] ? vprintk+0x309/0x33e [<ffffffff81150dee>] ? security_inode_alloc+0x1c/0x1e [<ffffffff813716cd>] ? _spin_lock+0x9/0xc [<ffffffff810fa20b>] ? inotify_d_instantiate+0x44/0x49 [<ffffffff8136f1da>] ? printk+0x3c/0x42 [<ffffffff815ebeb4>] dmar_table_init+0x12f/0x29a [<ffffffff815cfb94>] ? pci_iommu_init+0x0/0x21 [<ffffffff815ec4ac>] intel_iommu_init+0x16/0x840 [<ffffffff8100e7f1>] ? xen_debugfs_create_u32_array+0x57/0x63 [<ffffffff815cfb94>] ? pci_iommu_init+0x0/0x21 [<ffffffff815c5140>] ? early_idt_handler+0x0/0x71 [<ffffffff815cfba2>] pci_iommu_init+0xe/0x21 [<ffffffff8100a056>] do_one_initcall+0x56/0x13d [<ffffffff8108e586>] ? register_irq_proc+0xb0/0xcc [<ffffffff81110000>] ? vfs_set_dqinfo+0xb4/0x111 [<ffffffff815c574e>] kernel_init+0x1d0/0x228 [<ffffffff8101264a>] child_rip+0xa/0x20 [<ffffffff81011f67>] ? restore_args+0x0/0x30 [<ffffffff815c557e>] ? kernel_init+0x0/0x228 [<ffffffff81012640>] ? child_rip+0x0/0x20 ---[ end trace 4eaa2a86a8e2da22 ]---
This is not an oops it's just a warning. Your BIOS really is broken and there's nothing we can do about it. You can get rid of the warning by adding "intel_iommu=off" to the boot options.