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. 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/
