[+cc Joerg, David, iommu list] On Tue, Jul 9, 2013 at 2:24 PM, Guenter Roeck <li...@roeck-us.net> wrote: > I started seeing this problem after updating the BIOS trying fix another > issue, > though I may have missed it earlier. > > I understand this is a BIOS bug. Would be great if someone can pass this on > to Intel BIOS engineers.
Maybe. It'd be nice if Linux handled it better, though. > CPU is i7-4770K. > > Guenter > > --- > > [ 0.000000] WARNING: at drivers/iommu/dmar.c:484 > warn_invalid_dmar+0x86/0xa0() > [ 0.000000] Your BIOS is broken; DMAR reported at address 0! > [ 0.000000] BIOS vendor: Intel Corp.; Ver: > RLH8710H.86A.0320.2013.0606.1802; Product Version: > [ 0.000000] Modules linked in: > [ 0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 3.10.0+ #1 > [ 0.000000] Hardware name: /DH87RL, BIOS > RLH8710H.86A.0320.2013.0606.1802 06/06/2013 > [ 0.000000] 000000000000000b ffffffff81c01e20 ffffffff81671cfc > ffffffff81c01e68 > [ 0.000000] ffffffff81c01e58 ffffffff81043370 ffffffff81f6800c > ffffffff81cbb520 > [ 0.000000] 0000000000000000 ffff88061fdaad40 00000000c73cc018 > ffffffff81c01eb8 > [ 0.000000] Call Trace: > [ 0.000000] [<ffffffff81671cfc>] dump_stack+0x45/0x56 > [ 0.000000] [<ffffffff81043370>] warn_slowpath_common+0x70/0xa0 > [ 0.000000] [<ffffffff81043404>] warn_slowpath_fmt_taint+0x44/0x50 > [ 0.000000] [<ffffffff81d162eb>] ? early_ioremap+0x13/0x15 > [ 0.000000] [<ffffffff81d0d6a6>] ? __acpi_map_table+0x13/0x1a > [ 0.000000] [<ffffffff81548bf6>] warn_invalid_dmar+0x86/0xa0 > [ 0.000000] [<ffffffff81d4b994>] check_zero_address+0x57/0xf7 > [ 0.000000] [<ffffffff81d4ba49>] detect_intel_iommu+0x15/0xb6 > [ 0.000000] [<ffffffff81d07d28>] pci_iommu_alloc+0x49/0x70 > [ 0.000000] [<ffffffff81d15de4>] mem_init+0x17/0x9c > [ 0.000000] [<ffffffff81d01c54>] start_kernel+0x1c5/0x3e2 > [ 0.000000] [<ffffffff81d01898>] ? repair_env_string+0x5e/0x5e > [ 0.000000] [<ffffffff81d015a3>] x86_64_start_reservations+0x2a/0x2c > [ 0.000000] [<ffffffff81d0169b>] x86_64_start_kernel+0xf6/0xf9 > [ 0.000000] ---[ end trace a7e3512e2fa85eaf ]--- > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majord...@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
