Bug 16661 - Corrupted low memory
Summary: Corrupted low memory
Status: CLOSED CODE_FIX
Alias: None
Product: Platform Specific/Hardware
Classification: Unclassified
Component: i386 (show other bugs)
Hardware: All Linux
: P1 normal
Assignee: platform_i386
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2010-08-21 05:02 UTC by cjkosciuk
Modified: 2011-01-24 12:45 UTC (History)
4 users (show)

See Also:
Kernel Version: 2.6.34
Tree: Mainline
Regression: No


Attachments
Patch against 2.6.36-rc2 (5.97 KB, patch)
2010-08-25 00:35 UTC, H. Peter Anvin
Details | Diff

Description cjkosciuk 2010-08-21 05:02:28 UTC
[    60.881427] Corrupted low memory at c000659c (659c phys) = 00001a00
[    60.882418] Memory corruption dedected in low memory
Comment 1 Andrew Morton 2010-08-24 23:22:17 UTC
Reassigned to i386.  Someone please tell us what this means??

It's a crappy diagnostic - even looking a the source code provides no indication what the user should do to fix it, or what the consequences are.

Presumably go look for a BIOS update, dunno.  The kernel warning doesn't even _mention_ BIOS!
Comment 2 H. Peter Anvin 2010-08-24 23:28:03 UTC
It means we should add his BIOS (dmidecode info please) to the blacklist bad_bios_dmi_table in arch/x86/kernel/setup.c.  However, the bottom line is that 64K is such a small amount of memory and the list by now covers such a vast number of existing BIOSes, that we should just make it unconditional.

As far as I know, Windows 7 actually reserves all memory below 1 MiB to avoid BIOS bugs.
Comment 3 H. Peter Anvin 2010-08-24 23:29:20 UTC
Workaround for a single system that doesn't need a kernel rebuild:

memmap=64K$0
Comment 4 H. Peter Anvin 2010-08-25 00:35:18 UTC
Created attachment 27931 [details]
Patch against 2.6.36-rc2

Patch to address the overall issue, please test this patch to make sure it works as expected.
Comment 5 Andrew Morton 2010-08-25 01:17:11 UTC
Please also change that printk to inform users about this option.

It'd be better to make this a boot-time option if possible?
Comment 6 H. Peter Anvin 2010-08-25 02:33:28 UTC
Hm, good point; I was thinking there is the memmap= option, but it's somewhat of a kluge for this purpose.
Comment 7 cjkosciuk 2010-08-25 05:31:26 UTC
I'm a newbie to Linux, so please bear with me ...

Since the kernel default is 'CONFIG_X86_RESERVE_LOW_64K=y', and since the corruption was always found in that segment, I set memory_corruption_check=0 to stop getting the same message showing up over and over again in my virtual console.

Should I also do that memmap=64K$0 workaround? And if so, do I add it to the kernel line in /etc/default/grub?
Comment 8 H. Peter Anvin 2010-08-25 06:01:23 UTC
Without the output of "dmesg" and "dmidecode" I can't tell if CONFIG_X86_RESERVE_LOW_64K has any effect on your machine.  So yes, you can add memmap=64K$0 to the kernel line.
Comment 9 cjkosciuk 2010-08-25 15:10:06 UTC
memmap=64K$0 causes a boot failure. I just get a blinking cursor.

I just noticed that when I submitted this bug report I was using the i386 version. I've since installed the 64-bit.

Here are the outputs for "dmesg" and "dmidecode":

dmesg:

[    0.000000] Initializing cgroup subsys cpuset
[    0.000000] Initializing cgroup subsys cpu
[    0.000000] Linux version 2.6.34-020634-generic (root@zinc) (gcc version 4.2.3 (Ubuntu 4.2.3-2ubuntu7)) #020634 SMP Mon May 17 19:27:49 UTC 2010
[    0.000000] Command line: BOOT_IMAGE=/boot/vmlinuz-2.6.34-020634-generic root=UUID=b1dcc29b-3404-4eb4-9f1e-b119f776d36f ro text radeon.modeset=0 memory_corruption_check=1
[    0.000000] BIOS-provided physical RAM map:
[    0.000000]  BIOS-e820: 0000000000000000 - 000000000009d000 (usable)
[    0.000000]  BIOS-e820: 000000000009d000 - 00000000000a0000 (reserved)
[    0.000000]  BIOS-e820: 00000000000e0000 - 0000000000100000 (reserved)
[    0.000000]  BIOS-e820: 0000000000100000 - 000000009b63f000 (usable)
[    0.000000]  BIOS-e820: 000000009b63f000 - 000000009b6bf000 (reserved)
[    0.000000]  BIOS-e820: 000000009b6bf000 - 000000009b7bf000 (ACPI NVS)
[    0.000000]  BIOS-e820: 000000009b7bf000 - 000000009b7ff000 (ACPI data)
[    0.000000]  BIOS-e820: 000000009b7ff000 - 000000009b800000 (usable)
[    0.000000]  BIOS-e820: 000000009b800000 - 00000000a0000000 (reserved)
[    0.000000]  BIOS-e820: 00000000f0000000 - 00000000f8000000 (reserved)
[    0.000000]  BIOS-e820: 00000000feb00000 - 00000000feb04000 (reserved)
[    0.000000]  BIOS-e820: 00000000fec00000 - 00000000fec01000 (reserved)
[    0.000000]  BIOS-e820: 00000000fed10000 - 00000000fed14000 (reserved)
[    0.000000]  BIOS-e820: 00000000fed18000 - 00000000fed1a000 (reserved)
[    0.000000]  BIOS-e820: 00000000fed1b000 - 00000000fed20000 (reserved)
[    0.000000]  BIOS-e820: 00000000fee00000 - 00000000fee01000 (reserved)
[    0.000000]  BIOS-e820: 00000000ffe80000 - 0000000100000000 (reserved)
[    0.000000]  BIOS-e820: 0000000100000000 - 000000017c000000 (usable)
[    0.000000]  BIOS-e820: 000000017c000000 - 0000000180000000 (reserved)
[    0.000000]  BIOS-e820: 0000000180000000 - 00000001dc000000 (usable)
[    0.000000] NX (Execute Disable) protection: active
[    0.000000] DMI 2.6 present.
[    0.000000] e820 update range: 0000000000000000 - 0000000000001000 (usable) ==> (reserved)
[    0.000000] e820 remove range: 00000000000a0000 - 0000000000100000 (usable)
[    0.000000] No AGP bridge found
[    0.000000] last_pfn = 0x1dc000 max_arch_pfn = 0x400000000
[    0.000000] MTRR default type: uncachable
[    0.000000] MTRR fixed ranges enabled:
[    0.000000]   00000-9FFFF write-back
[    0.000000]   A0000-BFFFF uncachable
[    0.000000]   C0000-EFFFF write-through
[    0.000000]   F0000-FFFFF write-combining
[    0.000000] MTRR variable ranges enabled:
[    0.000000]   0 base 000000000 mask F80000000 write-back
[    0.000000]   1 base 0FFE00000 mask FFFE00000 write-protect
[    0.000000]   2 base 080000000 mask FE0000000 write-back
[    0.000000]   3 base 09C000000 mask FFC000000 uncachable
[    0.000000]   4 base 09B800000 mask FFF800000 uncachable
[    0.000000]   5 base 100000000 mask F00000000 write-back
[    0.000000]   6 base 1DC000000 mask FFC000000 uncachable
[    0.000000]   7 base 1E0000000 mask FE0000000 uncachable
[    0.000000] x86 PAT enabled: cpu 0, old 0x7040600070406, new 0x7010600070106
[    0.000000] last_pfn = 0x9b800 max_arch_pfn = 0x400000000
[    0.000000] e820 update range: 0000000000001000 - 0000000000010000 (usable) ==> (reserved)
[    0.000000] Scanning 1 areas for low memory corruption
[    0.000000] modified physical RAM map:
[    0.000000]  modified: 0000000000000000 - 0000000000010000 (reserved)
[    0.000000]  modified: 0000000000010000 - 000000000009d000 (usable)
[    0.000000]  modified: 000000000009d000 - 00000000000a0000 (reserved)
[    0.000000]  modified: 00000000000e0000 - 0000000000100000 (reserved)
[    0.000000]  modified: 0000000000100000 - 000000009b63f000 (usable)
[    0.000000]  modified: 000000009b63f000 - 000000009b6bf000 (reserved)
[    0.000000]  modified: 000000009b6bf000 - 000000009b7bf000 (ACPI NVS)
[    0.000000]  modified: 000000009b7bf000 - 000000009b7ff000 (ACPI data)
[    0.000000]  modified: 000000009b7ff000 - 000000009b800000 (usable)
[    0.000000]  modified: 000000009b800000 - 00000000a0000000 (reserved)
[    0.000000]  modified: 00000000f0000000 - 00000000f8000000 (reserved)
[    0.000000]  modified: 00000000feb00000 - 00000000feb04000 (reserved)
[    0.000000]  modified: 00000000fec00000 - 00000000fec01000 (reserved)
[    0.000000]  modified: 00000000fed10000 - 00000000fed14000 (reserved)
[    0.000000]  modified: 00000000fed18000 - 00000000fed1a000 (reserved)
[    0.000000]  modified: 00000000fed1b000 - 00000000fed20000 (reserved)
[    0.000000]  modified: 00000000fee00000 - 00000000fee01000 (reserved)
[    0.000000]  modified: 00000000ffe80000 - 0000000100000000 (reserved)
[    0.000000]  modified: 0000000100000000 - 000000017c000000 (usable)
[    0.000000]  modified: 000000017c000000 - 0000000180000000 (reserved)
[    0.000000]  modified: 0000000180000000 - 00000001dc000000 (usable)
[    0.000000] initial memory mapped : 0 - 20000000
[    0.000000] init_memory_mapping: 0000000000000000-000000009b800000
[    0.000000]  0000000000 - 009b800000 page 2M
[    0.000000] kernel direct mapping tables up to 9b800000 @ 16000-1a000
[    0.000000] init_memory_mapping: 0000000100000000-00000001dc000000
[    0.000000]  0100000000 - 01dc000000 page 2M
[    0.000000] kernel direct mapping tables up to 1dc000000 @ 18000-21000
[    0.000000] RAMDISK: 3719d000 - 37ff0000
[    0.000000] ACPI: RSDP 00000000000fe020 00024 (v02 HPQOEM)
[    0.000000] ACPI: XSDT 000000009b7fe120 0006C (v01 HPQOEM SLIC-MPC 00000001      01000013)
[    0.000000] ACPI: FACP 000000009b7fc000 000F4 (v04 HPQOEM SLIC-MPC 00000001 MSFT 01000013)
[    0.000000] ACPI: DSDT 000000009b7ea000 0E0BA (v02 HPQOEM SLIC-MPC 00000001 MSFT 01000013)
[    0.000000] ACPI: FACS 000000009b75e000 00040
[    0.000000] ACPI: ASF! 000000009b7fd000 000A5 (v32 HPQOEM SLIC-MPC 00000001 MSFT 01000013)
[    0.000000] ACPI: HPET 000000009b7fb000 00038 (v01 HPQOEM SLIC-MPC 00000001 MSFT 01000013)
[    0.000000] ACPI: APIC 000000009b7fa000 0008C (v02 HPQOEM SLIC-MPC 00000001 MSFT 01000013)
[    0.000000] ACPI: MCFG 000000009b7f9000 0003C (v01 HPQOEM SLIC-MPC 00000001 MSFT 01000013)
[    0.000000] ACPI: SLIC 000000009b7e9000 00176 (v01 HPQOEM SLIC-MPC 00000001 SLIC 000F4240)
[    0.000000] ACPI: BOOT 000000009b7e6000 00028 (v01 HPQOEM SLIC-MPC 00000001 MSFT 01000013)
[    0.000000] ACPI: SSDT 000000009b7e3000 009F1 (v01  PmRef    CpuPm 00003000 INTL 20051117)
[    0.000000] ACPI: SSDT 000000009b7e1000 019CD (v01 AmdRef  AmdTabl 00001000 INTL 20051117)
[    0.000000] ACPI: Local APIC address 0xfee00000
[    0.000000] No NUMA configuration found
[    0.000000] Faking a node at 0000000000000000-00000001dc000000
[    0.000000] Initmem setup node 0 0000000000000000-00000001dc000000
[    0.000000]   NODE_DATA [0000000100000000 - 0000000100004fff]
[    0.000000]  [ffffea0000000000-ffffea00069fffff] PMD -> [ffff880100200000-ffff8801057fffff] on node 0
[    0.000000] Zone PFN ranges:
[    0.000000]   DMA      0x00000010 -> 0x00001000
[    0.000000]   DMA32    0x00001000 -> 0x00100000
[    0.000000]   Normal   0x00100000 -> 0x001dc000
[    0.000000] Movable zone start PFN for each node
[    0.000000] early_node_map[5] active PFN ranges
[    0.000000]     0: 0x00000010 -> 0x0000009d
[    0.000000]     0: 0x00000100 -> 0x0009b63f
[    0.000000]     0: 0x0009b7ff -> 0x0009b800
[    0.000000]     0: 0x00100000 -> 0x0017c000
[    0.000000]     0: 0x00180000 -> 0x001dc000
[    0.000000] On node 0 totalpages: 1521101
[    0.000000]   DMA zone: 56 pages used for memmap
[    0.000000]   DMA zone: 0 pages reserved
[    0.000000]   DMA zone: 3925 pages, LIFO batch:0
[    0.000000]   DMA32 zone: 14280 pages used for memmap
[    0.000000]   DMA32 zone: 618104 pages, LIFO batch:31
[    0.000000]   Normal zone: 12320 pages used for memmap
[    0.000000]   Normal zone: 872416 pages, LIFO batch:31
[    0.000000] ACPI: PM-Timer IO Port: 0x408
[    0.000000] ACPI: Local APIC address 0xfee00000
[    0.000000] ACPI: LAPIC (acpi_id[0x01] lapic_id[0x00] enabled)
[    0.000000] ACPI: LAPIC (acpi_id[0x02] lapic_id[0x01] enabled)
[    0.000000] ACPI: LAPIC (acpi_id[0x03] lapic_id[0x04] enabled)
[    0.000000] ACPI: LAPIC (acpi_id[0x04] lapic_id[0x05] enabled)
[    0.000000] ACPI: LAPIC (acpi_id[0x05] lapic_id[0x00] disabled)
[    0.000000] ACPI: LAPIC (acpi_id[0x06] lapic_id[0x00] disabled)
[    0.000000] ACPI: LAPIC (acpi_id[0x07] lapic_id[0x00] disabled)
[    0.000000] ACPI: LAPIC (acpi_id[0x08] lapic_id[0x00] disabled)
[    0.000000] ACPI: IOAPIC (id[0x02] address[0xfec00000] gsi_base[0])
[    0.000000] IOAPIC[0]: apic_id 2, version 32, address 0xfec00000, GSI 0-23
[    0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
[    0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
[    0.000000] ACPI: IRQ0 used by override.
[    0.000000] ACPI: IRQ2 used by override.
[    0.000000] ACPI: IRQ9 used by override.
[    0.000000] Using ACPI (MADT) for SMP configuration information
[    0.000000] ACPI: HPET id: 0x8086a201 base: 0xfed00000
[    0.000000] SMP: Allowing 8 CPUs, 4 hotplug CPUs
[    0.000000] nr_irqs_gsi: 24
[    0.000000] early_res array is doubled to 64 at [1c000 - 1c7ff]
[    0.000000] PM: Registered nosave memory: 000000000009d000 - 00000000000a0000
[    0.000000] PM: Registered nosave memory: 00000000000a0000 - 00000000000e0000
[    0.000000] PM: Registered nosave memory: 00000000000e0000 - 0000000000100000
[    0.000000] PM: Registered nosave memory: 000000009b63f000 - 000000009b6bf000
[    0.000000] PM: Registered nosave memory: 000000009b6bf000 - 000000009b7bf000
[    0.000000] PM: Registered nosave memory: 000000009b7bf000 - 000000009b7ff000
[    0.000000] PM: Registered nosave memory: 000000009b800000 - 00000000a0000000
[    0.000000] PM: Registered nosave memory: 00000000a0000000 - 00000000f0000000
[    0.000000] PM: Registered nosave memory: 00000000f0000000 - 00000000f8000000
[    0.000000] PM: Registered nosave memory: 00000000f8000000 - 00000000feb00000
[    0.000000] PM: Registered nosave memory: 00000000feb00000 - 00000000feb04000
[    0.000000] PM: Registered nosave memory: 00000000feb04000 - 00000000fec00000
[    0.000000] PM: Registered nosave memory: 00000000fec00000 - 00000000fec01000
[    0.000000] PM: Registered nosave memory: 00000000fec01000 - 00000000fed10000
[    0.000000] PM: Registered nosave memory: 00000000fed10000 - 00000000fed14000
[    0.000000] PM: Registered nosave memory: 00000000fed14000 - 00000000fed18000
[    0.000000] PM: Registered nosave memory: 00000000fed18000 - 00000000fed1a000
[    0.000000] PM: Registered nosave memory: 00000000fed1a000 - 00000000fed1b000
[    0.000000] PM: Registered nosave memory: 00000000fed1b000 - 00000000fed20000
[    0.000000] PM: Registered nosave memory: 00000000fed20000 - 00000000fee00000
[    0.000000] PM: Registered nosave memory: 00000000fee00000 - 00000000fee01000
[    0.000000] PM: Registered nosave memory: 00000000fee01000 - 00000000ffe80000
[    0.000000] PM: Registered nosave memory: 00000000ffe80000 - 0000000100000000
[    0.000000] PM: Registered nosave memory: 000000017c000000 - 0000000180000000
[    0.000000] Allocating PCI resources starting at a0000000 (gap: a0000000:50000000)
[    0.000000] Booting paravirtualized kernel on bare hardware
[    0.000000] setup_percpu: NR_CPUS:64 nr_cpumask_bits:64 nr_cpu_ids:8 nr_node_ids:1
[    0.000000] early_res array is doubled to 128 at [1c800 - 1d7ff]
[    0.000000] PERCPU: Embedded 30 pages/cpu @ffff880001e00000 s90664 r8192 d24024 u262144
[    0.000000] pcpu-alloc: s90664 r8192 d24024 u262144 alloc=1*2097152
[    0.000000] pcpu-alloc: [0] 0 1 2 3 4 5 6 7 
[    0.000000] Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 1494445
[    0.000000] Policy zone: Normal
[    0.000000] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-2.6.34-020634-generic root=UUID=b1dcc29b-3404-4eb4-9f1e-b119f776d36f ro text radeon.modeset=0 memory_corruption_check=1
[    0.000000] PID hash table entries: 4096 (order: 3, 32768 bytes)
[    0.000000] Checking aperture...
[    0.000000] No AGP bridge found
[    0.000000] Calgary: detecting Calgary via BIOS EBDA area
[    0.000000] Calgary: Unable to locate Rio Grande table in EBDA - bailing!
[    0.000000] Subtract (68 early reservations)
[    0.000000]   #1 [0001000000 - 0001cb5e14]   TEXT DATA BSS
[    0.000000]   #2 [003719d000 - 0037ff0000]         RAMDISK
[    0.000000]   #3 [000009d000 - 0000100000]   BIOS reserved
[    0.000000]   #4 [0001cb6000 - 0001cb637d]             BRK
[    0.000000]   #5 [0000010000 - 0000012000]      TRAMPOLINE
[    0.000000]   #6 [0000012000 - 0000016000]     ACPI WAKEUP
[    0.000000]   #7 [0000016000 - 0000018000]         PGTABLE
[    0.000000]   #8 [0000018000 - 000001c000]         PGTABLE
[    0.000000]   #9 [0100000000 - 0100005000]       NODE_DATA
[    0.000000]   #10 [0001cb6380 - 0001cb7380]         BOOTMEM
[    0.000000]   #11 [00020b7380 - 00020b7800]         BOOTMEM
[    0.000000]   #12 [0100005000 - 0100006000]         BOOTMEM
[    0.000000]   #13 [0100006000 - 0100007000]         BOOTMEM
[    0.000000]   #14 [0100200000 - 0105800000]        MEMMAP 0
[    0.000000]   #15 [0001cb5e40 - 0001cb5fc0]         BOOTMEM
[    0.000000]   #16 [0001cb7380 - 0001ccf380]         BOOTMEM
[    0.000000]   #17 [0001ccf380 - 0001ce7380]         BOOTMEM
[    0.000000]   #18 [0001ce8000 - 0001ce9000]         BOOTMEM
[    0.000000]   #19 [0001ce7380 - 0001ce73c1]         BOOTMEM
[    0.000000]   #20 [0001ce7400 - 0001ce7443]         BOOTMEM
[    0.000000]   #21 [0001ce7480 - 0001ce7918]         BOOTMEM
[    0.000000]   #22 [0001ce7940 - 0001ce79a8]         BOOTMEM
[    0.000000]   #23 [0001ce79c0 - 0001ce7a28]         BOOTMEM
[    0.000000]   #24 [0001ce7a40 - 0001ce7aa8]         BOOTMEM
[    0.000000]   #25 [0001ce7ac0 - 0001ce7b28]         BOOTMEM
[    0.000000]   #26 [0001ce7b40 - 0001ce7ba8]         BOOTMEM
[    0.000000]   #27 [0001ce7bc0 - 0001ce7c28]         BOOTMEM
[    0.000000]   #28 [0001ce7c40 - 0001ce7ca8]         BOOTMEM
[    0.000000]   #29 [0001ce7cc0 - 0001ce7d28]         BOOTMEM
[    0.000000]   #30 [0001ce7d40 - 0001ce7da8]         BOOTMEM
[    0.000000]   #31 [0001ce7dc0 - 0001ce7e28]         BOOTMEM
[    0.000000]   #32 [0001ce7e40 - 0001ce7ea8]         BOOTMEM
[    0.000000]   #33 [0001ce7ec0 - 0001ce7f28]         BOOTMEM
[    0.000000]   #34 [0001ce7f40 - 0001ce7fa8]         BOOTMEM
[    0.000000]   #35 [0001ce9000 - 0001ce9068]         BOOTMEM
[    0.000000]   #36 [0001ce9080 - 0001ce90e8]         BOOTMEM
[    0.000000]   #37 [0001ce9100 - 0001ce9168]         BOOTMEM
[    0.000000]   #38 [0001ce9180 - 0001ce91e8]         BOOTMEM
[    0.000000]   #39 [0001ce9200 - 0001ce9268]         BOOTMEM
[    0.000000]   #40 [0001ce9280 - 0001ce92e8]         BOOTMEM
[    0.000000]   #41 [0001ce9300 - 0001ce9368]         BOOTMEM
[    0.000000]   #42 [0001cb5fc0 - 0001cb5fe0]         BOOTMEM
[    0.000000]   #43 [0001ce7fc0 - 0001ce7fe0]         BOOTMEM
[    0.000000]   #44 [0001ce9380 - 0001ce93a0]         BOOTMEM
[    0.000000]   #45 [0001ce93c0 - 0001ce93e0]         BOOTMEM
[    0.000000]   #46 [0001ce9400 - 0001ce9491]         BOOTMEM
[    0.000000]   #47 [0001ce94c0 - 0001ce9551]         BOOTMEM
[    0.000000]   #48 [0001e00000 - 0001e1e000]         BOOTMEM
[    0.000000]   #49 [0001e40000 - 0001e5e000]         BOOTMEM
[    0.000000]   #50 [0001e80000 - 0001e9e000]         BOOTMEM
[    0.000000]   #51 [0001ec0000 - 0001ede000]         BOOTMEM
[    0.000000]   #52 [0001f00000 - 0001f1e000]         BOOTMEM
[    0.000000]   #53 [0001f40000 - 0001f5e000]         BOOTMEM
[    0.000000]   #54 [0001f80000 - 0001f9e000]         BOOTMEM
[    0.000000]   #55 [0001fc0000 - 0001fde000]         BOOTMEM
[    0.000000]   #56 [0001ceb580 - 0001ceb588]         BOOTMEM
[    0.000000]   #57 [0001ceb5c0 - 0001ceb5c8]         BOOTMEM
[    0.000000]   #58 [0001ceb600 - 0001ceb620]         BOOTMEM
[    0.000000]   #59 [0001ceb640 - 0001ceb680]         BOOTMEM
[    0.000000]   #60 [0001ceb680 - 0001ceb7a0]         BOOTMEM
[    0.000000]   #61 [0001ceb7c0 - 0001ceb808]         BOOTMEM
[    0.000000]   #62 [0001ceb840 - 0001ceb888]         BOOTMEM
[    0.000000]   #63 [0001ceb8c0 - 0001cf38c0]         BOOTMEM
[    0.000000]   #64 [00020b8000 - 00060b8000]         BOOTMEM
[    0.000000]   #65 [0001cf38c0 - 0001d138c0]         BOOTMEM
[    0.000000]   #66 [0001d138c0 - 0001d538c0]         BOOTMEM
[    0.000000]   #67 [000001d800 - 0000025800]         BOOTMEM
[    0.000000] Memory: 5901416k/7798784k available (5415k kernel code, 1714380k absent, 182988k reserved, 5528k data, 940k init)
[    0.000000] SLUB: Genslabs=14, HWalign=64, Order=0-3, MinObjects=0, CPUs=8, Nodes=1
[    0.000000] Hierarchical RCU implementation.
[    0.000000] NR_IRQS:4352 nr_irqs:472
[    0.000000] Extended CMOS year: 2000
[    0.000000] Console: colour VGA+ 80x25
[    0.000000] console [tty0] enabled
[    0.000000] allocated 62914560 bytes of page_cgroup
[    0.000000] please try 'cgroup_disable=memory' option if you don't want memory cgroups
[    0.000000] hpet clockevent registered
[    0.000000] Fast TSC calibration using PIT
[    0.010000] Detected 2393.981 MHz processor.
[    0.000007] Calibrating delay loop (skipped), value calculated using timer frequency.. 4787.96 BogoMIPS (lpj=23939810)
[    0.000150] Security Framework initialized
[    0.000216] SELinux:  Disabled at boot.
[    0.000769] Dentry cache hash table entries: 1048576 (order: 11, 8388608 bytes)
[    0.003177] Inode-cache hash table entries: 524288 (order: 10, 4194304 bytes)
[    0.004293] Mount-cache hash table entries: 256
[    0.004480] Initializing cgroup subsys ns
[    0.004544] Initializing cgroup subsys cpuacct
[    0.004609] Initializing cgroup subsys memory
[    0.004679] Initializing cgroup subsys devices
[    0.004738] Initializing cgroup subsys freezer
[    0.004802] Initializing cgroup subsys net_cls
[    0.004879] CPU: Physical Processor ID: 0
[    0.004939] CPU: Processor Core ID: 0
[    0.005002] mce: CPU supports 9 MCE banks
[    0.005071] CPU0: Thermal monitoring enabled (TM1)
[    0.005139] using mwait in idle threads.
[    0.005201] Performance Events: Westmere events, Intel PMU driver.
[    0.005320] ... version:                3
[    0.005378] ... bit width:              48
[    0.005440] ... generic registers:      4
[    0.005498] ... value mask:             0000ffffffffffff
[    0.005563] ... max period:             000000007fffffff
[    0.005625] ... fixed-purpose events:   3
[    0.005685] ... event mask:             000000070000000f
[    0.007702] ACPI: Core revision 20100121
[    0.059429] ftrace: converting mcount calls to 0f 1f 44 00 00
[    0.059500] ftrace: allocating 25407 entries in 100 pages
[    0.067681] Setting APIC routing to flat
[    0.068150] ..TIMER: vector=0x30 apic1=0 pin1=2 apic2=-1 pin2=-1
[    0.168050] CPU0: Intel(R) Core(TM) i5 CPU       M 450  @ 2.40GHz stepping 05
[    0.282754] Booting Node   0, Processors  #1 #2 #3
[    0.821853] Brought up 4 CPUs
[    0.821965] Total of 4 processors activated (19153.45 BogoMIPS).
[    0.824082] devtmpfs: initialized
[    0.824359] regulator: core version 0.5
[    0.824442] Time: 14:45:09  Date: 08/25/10
[    0.824529] NET: Registered protocol family 16
[    0.824676] ACPI FADT declares the system doesn't support PCIe ASPM, so disable it
[    0.824773] ACPI: bus type pci registered
[    0.824904] PCI: MMCONFIG for domain 0000 [bus 00-7f] at [mem 0xf0000000-0xf7ffffff] (base 0xf0000000)
[    0.825007] PCI: MMCONFIG at [mem 0xf0000000-0xf7ffffff] reserved in E820
[    0.835134] PCI: Using configuration type 1 for base access
[    0.835695] bio: create slab <bio-0> at 0
[    0.837891] ACPI: EC: Look up EC in DSDT
[    0.844726] ACPI: BIOS _OSI(Linux) query ignored
[    0.854264] ACPI: SSDT 000000009b691918 003F0 (v01  PmRef  Cpu0Ist 00003000 INTL 20051117)
[    0.855375] ACPI: SSDT 000000009b68f018 00842 (v01  PmRef  Cpu0Cst 00003001 INTL 20051117)
[    0.856634] ACPI: SSDT 000000009b690a98 00303 (v01  PmRef    ApIst 00003000 INTL 20051117)
[    0.857591] ACPI: SSDT 000000009b68ed98 00119 (v01  PmRef    ApCst 00003000 INTL 20051117)
[    0.863346] ACPI: Interpreter enabled
[    0.863414] ACPI: (supports S0 S3 S4 S5)
[    0.863604] ACPI: Using IOAPIC for interrupt routing
[    0.875180] ACPI: EC: GPE = 0x16, I/O: command/status = 0x66, data = 0x62
[    0.876201] ACPI: No dock devices found.
[    0.876263] PCI: Using host bridge windows from ACPI; if necessary, use "pci=nocrs" and report a bug
[    0.877299] \_SB_.PCI0:_OSC invalid UUID
[    0.877300] _OSC request data:1 8 1f 
[    0.877303] ACPI: PCI Root Bridge [PCI0] (0000:00)
[    0.878763] pci_root PNP0A08:00: host bridge window [io  0x0000-0x0cf7]
[    0.878830] pci_root PNP0A08:00: host bridge window [io  0x0d00-0xffff]
[    0.878900] pci_root PNP0A08:00: host bridge window [mem 0x000a0000-0x000bffff]
[    0.878993] pci_root PNP0A08:00: host bridge window [mem 0xa0000000-0xfeafffff]
[    0.879143] pci 0000:00:01.0: PME# supported from D0 D3hot D3cold
[    0.879146] pci 0000:00:01.0: PME# disabled
[    0.879164] pci 0000:00:02.0: reg 10: [mem 0xc0000000-0xc03fffff 64bit]
[    0.879169] pci 0000:00:02.0: reg 18: [mem 0xb0000000-0xbfffffff 64bit pref]
[    0.879172] pci 0000:00:02.0: reg 20: [io  0x5050-0x5057]
[    0.879250] pci 0000:00:16.0: reg 10: [mem 0xc4506100-0xc450610f 64bit]
[    0.879306] pci 0000:00:16.0: PME# supported from D0 D3hot D3cold
[    0.879310] pci 0000:00:16.0: PME# disabled
[    0.879368] pci 0000:00:1a.0: reg 10: [mem 0xc4505c00-0xc4505fff]
[    0.879432] pci 0000:00:1a.0: PME# supported from D0 D3hot D3cold
[    0.879436] pci 0000:00:1a.0: PME# disabled
[    0.879479] pci 0000:00:1b.0: reg 10: [mem 0xc4500000-0xc4503fff 64bit]
[    0.879536] pci 0000:00:1b.0: PME# supported from D0 D3hot D3cold
[    0.879540] pci 0000:00:1b.0: PME# disabled
[    0.879628] pci 0000:00:1c.0: PME# supported from D0 D3hot D3cold
[    0.879633] pci 0000:00:1c.0: PME# disabled
[    0.879723] pci 0000:00:1c.1: PME# supported from D0 D3hot D3cold
[    0.879727] pci 0000:00:1c.1: PME# disabled
[    0.879788] pci 0000:00:1d.0: reg 10: [mem 0xc4505800-0xc4505bff]
[    0.879852] pci 0000:00:1d.0: PME# supported from D0 D3hot D3cold
[    0.879856] pci 0000:00:1d.0: PME# disabled
[    0.880048] pci 0000:00:1f.2: reg 10: [io  0x5048-0x504f]
[    0.880055] pci 0000:00:1f.2: reg 14: [io  0x505c-0x505f]
[    0.880062] pci 0000:00:1f.2: reg 18: [io  0x5040-0x5047]
[    0.880068] pci 0000:00:1f.2: reg 1c: [io  0x5058-0x505b]
[    0.880075] pci 0000:00:1f.2: reg 20: [io  0x5020-0x503f]
[    0.880082] pci 0000:00:1f.2: reg 24: [mem 0xc4505000-0xc45057ff]
[    0.880125] pci 0000:00:1f.2: PME# supported from D3hot
[    0.880129] pci 0000:00:1f.2: PME# disabled
[    0.880165] pci 0000:00:1f.3: reg 10: [mem 0xc4506000-0xc45060ff 64bit]
[    0.880182] pci 0000:00:1f.3: reg 20: [io  0x5000-0x501f]
[    0.880241] pci 0000:00:1f.6: reg 10: [mem 0xc4504000-0xc4504fff 64bit]
[    0.880345] pci 0000:01:00.0: reg 10: [mem 0xa0000000-0xafffffff 64bit pref]
[    0.880356] pci 0000:01:00.0: reg 18: [mem 0xc4400000-0xc441ffff 64bit]
[    0.880362] pci 0000:01:00.0: reg 20: [io  0x4000-0x40ff]
[    0.880373] pci 0000:01:00.0: reg 30: [mem 0xfffe0000-0xffffffff pref]
[    0.880392] pci 0000:01:00.0: supports D1 D2
[    0.880423] pci 0000:01:00.1: reg 10: [mem 0xc4420000-0xc4423fff 64bit]
[    0.880459] pci 0000:01:00.1: supports D1 D2
[    0.880476] pci 0000:00:01.0: PCI bridge to [bus 01-01]
[    0.880543] pci 0000:00:01.0:   bridge window [io  0x4000-0x4fff]
[    0.880546] pci 0000:00:01.0:   bridge window [mem 0xc4400000-0xc44fffff]
[    0.880549] pci 0000:00:01.0:   bridge window [mem 0xa0000000-0xafffffff 64bit pref]
[    0.880709] pci 0000:02:00.0: reg 10: [mem 0xc3400000-0xc3401fff 64bit]
[    0.880838] pci 0000:02:00.0: PME# supported from D0 D3hot D3cold
[    0.880865] pci 0000:02:00.0: PME# disabled
[    0.880919] pci 0000:00:1c.0: PCI bridge to [bus 02-02]
[    0.880984] pci 0000:00:1c.0:   bridge window [io  0x3000-0x3fff]
[    0.880989] pci 0000:00:1c.0:   bridge window [mem 0xc3400000-0xc43fffff]
[    0.880996] pci 0000:00:1c.0:   bridge window [mem 0xc0400000-0xc13fffff 64bit pref]
[    0.881138] pci 0000:03:00.0: reg 10: [io  0x2000-0x20ff]
[    0.881195] pci 0000:03:00.0: reg 18: [mem 0xc1404000-0xc1404fff 64bit pref]
[    0.881246] pci 0000:03:00.0: reg 20: [mem 0xc1400000-0xc1403fff 64bit pref]
[    0.881273] pci 0000:03:00.0: reg 30: [mem 0xffff0000-0xffffffff pref]
[    0.881420] pci 0000:03:00.0: supports D1 D2
[    0.881421] pci 0000:03:00.0: PME# supported from D0 D1 D2 D3hot D3cold
[    0.881435] pci 0000:03:00.0: PME# disabled
[    0.881541] pci 0000:00:1c.1: PCI bridge to [bus 03-03]
[    0.881608] pci 0000:00:1c.1:   bridge window [io  0x2000-0x2fff]
[    0.881612] pci 0000:00:1c.1:   bridge window [mem 0xc2400000-0xc33fffff]
[    0.881619] pci 0000:00:1c.1:   bridge window [mem 0xc1400000-0xc23fffff 64bit pref]
[    0.881690] pci 0000:00:1e.0: PCI bridge to [bus 04-04] (subtractive decode)
[    0.881767] pci 0000:00:1e.0:   bridge window [io  0xf000-0x0000] (disabled)
[    0.881771] pci 0000:00:1e.0:   bridge window [mem 0xfff00000-0x000fffff] (disabled)
[    0.881779] pci 0000:00:1e.0:   bridge window [mem 0xfff00000-0x000fffff pref] (disabled)
[    0.881781] pci 0000:00:1e.0:   bridge window [io  0x0000-0x0cf7] (subtractive decode)
[    0.881782] pci 0000:00:1e.0:   bridge window [io  0x0d00-0xffff] (subtractive decode)
[    0.881784] pci 0000:00:1e.0:   bridge window [mem 0x000a0000-0x000bffff] (subtractive decode)
[    0.881786] pci 0000:00:1e.0:   bridge window [mem 0xa0000000-0xfeafffff] (subtractive decode)
[    0.881815] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0._PRT]
[    0.882003] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.P0P3._PRT]
[    0.882121] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.P0P1._PRT]
[    0.882186] ACPI Warning for \_SB_.PCI0.P0P1._PRT: Return Package has no elements (empty) (20100121/nspredef-456)
[    0.882432] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.RP01._PRT]
[    0.882524] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.RP02._PRT]
[    0.882762] \_SB_.PCI0:_OSC invalid UUID
[    0.882764] _OSC request data:1 19 1f 
[    0.900028] ACPI: PCI Root Bridge [CPBG] (0000:7f)
[    0.900592] ACPI: PCI Interrupt Link [LNKA] (IRQs 1 3 4 5 6 7 *10 12 14 15)
[    0.901095] ACPI: PCI Interrupt Link [LNKB] (IRQs 1 3 4 5 6 7 11 12 14 15) *10
[    0.901647] ACPI: PCI Interrupt Link [LNKC] (IRQs 1 3 4 5 6 7 10 12 14 15) *0, disabled.
[    0.902229] ACPI: PCI Interrupt Link [LNKD] (IRQs 1 3 4 5 6 *7 11 12 14 15)
[    0.902730] ACPI: PCI Interrupt Link [LNKE] (IRQs 1 3 4 5 6 7 10 12 14 15) *0, disabled.
[    0.903304] ACPI: PCI Interrupt Link [LNKF] (IRQs 1 3 4 5 6 7 *11 12 14 15)
[    0.903804] ACPI: PCI Interrupt Link [LNKG] (IRQs 1 3 4 5 6 7 10 12 14 15) *11
[    0.904352] ACPI: PCI Interrupt Link [LNKH] (IRQs 1 3 4 5 6 7 11 12 14 15) *0, disabled.
[    0.904901] vgaarb: device added: PCI:0000:00:02.0,decodes=io+mem,owns=io+mem,locks=none
[    0.905008] vgaarb: device added: PCI:0000:01:00.0,decodes=io+mem,owns=none,locks=none
[    0.905107] vgaarb: loaded
[    0.905231] SCSI subsystem initialized
[    0.905369] libata version 3.00 loaded.
[    0.905408] usbcore: registered new interface driver usbfs
[    0.905482] usbcore: registered new interface driver hub
[    0.905561] usbcore: registered new device driver usb
[    0.905795] ACPI: WMI: Mapper loaded
[    0.905855] PCI: Using ACPI for IRQ routing
[    0.905914] PCI: pci_cache_line_size set to 64 bytes
[    0.906050] reserve RAM buffer: 000000000009d000 - 000000000009ffff 
[    0.906052] reserve RAM buffer: 000000009b63f000 - 000000009bffffff 
[    0.906054] reserve RAM buffer: 000000009b800000 - 000000009bffffff 
[    0.906115] NetLabel: Initializing
[    0.906170] NetLabel:  domain hash size = 128
[    0.906231] NetLabel:  protocols = UNLABELED CIPSOv4
[    0.906300] NetLabel:  unlabeled traffic allowed by default
[    0.906398] hpet0: at MMIO 0xfed00000, IRQs 2, 8, 0, 0, 0, 0, 0, 0
[    0.906681] hpet0: 8 comparators, 64-bit 14.318180 MHz counter
[    0.908761] Switching to clocksource tsc
[    0.910206] pnp: PnP ACPI init
[    0.910277] ACPI: bus type pnp registered
[    0.912075]   alloc irq_desc for 23 on node 0
[    0.912077]   alloc kstat_irqs on node 0
[    0.913656] pnp: PnP ACPI: found 12 devices
[    0.913718] ACPI: ACPI bus type pnp unregistered
[    0.913786] system 00:05: [io  0x0680-0x069f] has been reserved
[    0.913855] system 00:05: [io  0x0800-0x080f] has been reserved
[    0.913919] system 00:05: [io  0xffff] has been reserved
[    0.913985] system 00:05: [io  0xffff] has been reserved
[    0.914049] system 00:05: [io  0x0400-0x047f] has been reserved
[    0.914117] system 00:05: [io  0x0500-0x057f] has been reserved
[    0.914183] system 00:05: [io  0x164e-0x164f] has been reserved
[    0.914252] system 00:05: [io  0x0380-0x038e] has been reserved
[    0.914322] system 00:0a: [mem 0xfed1c000-0xfed1ffff] has been reserved
[    0.914391] system 00:0a: [mem 0xfed10000-0xfed13fff] has been reserved
[    0.914461] system 00:0a: [mem 0xfed18000-0xfed18fff] has been reserved
[    0.914525] system 00:0a: [mem 0xfed19000-0xfed19fff] has been reserved
[    0.914596] system 00:0a: [mem 0xf0000000-0xf1ffffff] has been reserved
[    0.914663] system 00:0a: [mem 0xfed20000-0xfed3ffff] has been reserved
[    0.914733] system 00:0a: [mem 0xff000000-0xffffffff] could not be reserved
[    0.914796] system 00:0a: [mem 0xfee00000-0xfeefffff] could not be reserved
[    0.914867] system 00:0a: [mem 0xc4600000-0xc4600fff] has been reserved
[    0.919572] pci 0000:01:00.0: no compatible bridge window for [mem 0xfffe0000-0xffffffff pref]
[    0.919671] pci 0000:03:00.0: no compatible bridge window for [mem 0xffff0000-0xffffffff pref]
[    0.919804] pci 0000:01:00.0: BAR 6: assigned [mem 0xc4440000-0xc445ffff pref]
[    0.919896] pci 0000:00:01.0: PCI bridge to [bus 01-01]
[    0.919963] pci 0000:00:01.0:   bridge window [io  0x4000-0x4fff]
[    0.920030] pci 0000:00:01.0:   bridge window [mem 0xc4400000-0xc44fffff]
[    0.920100] pci 0000:00:01.0:   bridge window [mem 0xa0000000-0xafffffff 64bit pref]
[    0.920197] pci 0000:00:1c.0: PCI bridge to [bus 02-02]
[    0.920262] pci 0000:00:1c.0:   bridge window [io  0x3000-0x3fff]
[    0.920333] pci 0000:00:1c.0:   bridge window [mem 0xc3400000-0xc43fffff]
[    0.920402] pci 0000:00:1c.0:   bridge window [mem 0xc0400000-0xc13fffff 64bit pref]
[    0.921085] pci 0000:03:00.0: BAR 6: assigned [mem 0xc1410000-0xc141ffff pref]
[    0.921177] pci 0000:00:1c.1: PCI bridge to [bus 03-03]
[    0.921243] pci 0000:00:1c.1:   bridge window [io  0x2000-0x2fff]
[    0.921313] pci 0000:00:1c.1:   bridge window [mem 0xc2400000-0xc33fffff]
[    0.921385] pci 0000:00:1c.1:   bridge window [mem 0xc1400000-0xc23fffff 64bit pref]
[    0.921487] pci 0000:00:1e.0: PCI bridge to [bus 04-04]
[    0.921546] pci 0000:00:1e.0:   bridge window [io  disabled]
[    0.921616] pci 0000:00:1e.0:   bridge window [mem disabled]
[    0.921685] pci 0000:00:1e.0:   bridge window [mem pref disabled]
[    0.921766]   alloc irq_desc for 16 on node -1
[    0.921767]   alloc kstat_irqs on node -1
[    0.921771] pci 0000:00:01.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[    0.921843] pci 0000:00:01.0: setting latency timer to 64
[    0.921851]   alloc irq_desc for 17 on node -1
[    0.921852]   alloc kstat_irqs on node -1
[    0.921856] pci 0000:00:1c.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17
[    0.921927] pci 0000:00:1c.0: setting latency timer to 64
[    0.921936] pci 0000:00:1c.1: PCI INT B -> GSI 16 (level, low) -> IRQ 16
[    0.922007] pci 0000:00:1c.1: setting latency timer to 64
[    0.922015] pci 0000:00:1e.0: setting latency timer to 64
[    0.922019] pci_bus 0000:00: resource 4 [io  0x0000-0x0cf7]
[    0.922021] pci_bus 0000:00: resource 5 [io  0x0d00-0xffff]
[    0.922022] pci_bus 0000:00: resource 6 [mem 0x000a0000-0x000bffff]
[    0.922024] pci_bus 0000:00: resource 7 [mem 0xa0000000-0xfeafffff]
[    0.922025] pci_bus 0000:01: resource 0 [io  0x4000-0x4fff]
[    0.922027] pci_bus 0000:01: resource 1 [mem 0xc4400000-0xc44fffff]
[    0.922028] pci_bus 0000:01: resource 2 [mem 0xa0000000-0xafffffff 64bit pref]
[    0.922030] pci_bus 0000:02: resource 0 [io  0x3000-0x3fff]
[    0.922032] pci_bus 0000:02: resource 1 [mem 0xc3400000-0xc43fffff]
[    0.922033] pci_bus 0000:02: resource 2 [mem 0xc0400000-0xc13fffff 64bit pref]
[    0.922035] pci_bus 0000:03: resource 0 [io  0x2000-0x2fff]
[    0.922036] pci_bus 0000:03: resource 1 [mem 0xc2400000-0xc33fffff]
[    0.922038] pci_bus 0000:03: resource 2 [mem 0xc1400000-0xc23fffff 64bit pref]
[    0.922039] pci_bus 0000:04: resource 4 [io  0x0000-0x0cf7]
[    0.922041] pci_bus 0000:04: resource 5 [io  0x0d00-0xffff]
[    0.922042] pci_bus 0000:04: resource 6 [mem 0x000a0000-0x000bffff]
[    0.922044] pci_bus 0000:04: resource 7 [mem 0xa0000000-0xfeafffff]
[    0.922067] NET: Registered protocol family 2
[    0.922293] IP route cache hash table entries: 262144 (order: 9, 2097152 bytes)
[    0.923310] TCP established hash table entries: 524288 (order: 11, 8388608 bytes)
[    0.925577] TCP bind hash table entries: 65536 (order: 8, 1048576 bytes)
[    0.925902] TCP: Hash tables configured (established 524288 bind 65536)
[    0.925972] TCP reno registered
[    0.926040] UDP hash table entries: 4096 (order: 5, 131072 bytes)
[    0.926147] UDP-Lite hash table entries: 4096 (order: 5, 131072 bytes)
[    0.926343] NET: Registered protocol family 1
[    0.926422] pci 0000:00:02.0: Boot video device
[    0.961714] PCI: CLS 64 bytes, default 64
[    0.961757] Trying to unpack rootfs image as initramfs...
[    1.218793] Freeing initrd memory: 14668k freed
[    1.222046] PCI-DMA: Using software bounce buffering for IO (SWIOTLB)
[    1.222124] Placing 64MB software IO TLB between ffff8800020b8000 - ffff8800060b8000
[    1.222221] software IO TLB at phys 0x20b8000 - 0x60b8000
[    1.222334] Simple Boot Flag at 0x44 set to 0x1
[    1.222630] Scanning for low memory corruption every 60 seconds
[    1.222846] audit: initializing netlink socket (disabled)
[    1.222923] type=2000 audit(1282747509.070:1): initialized
[    1.236374] HugeTLB registered 2 MB page size, pre-allocated 0 pages
[    1.237499] VFS: Disk quotas dquot_6.5.2
[    1.237597] Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
[    1.238106] fuse init (API version 7.13)
[    1.238225] msgmni has been set to 11554
[    1.238465] alg: No test for stdrng (krng)
[    1.238571] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 253)
[    1.238669] io scheduler noop registered
[    1.238730] io scheduler deadline registered
[    1.238835] io scheduler cfq registered (default)
[    1.238984] pcieport 0000:00:01.0: setting latency timer to 64
[    1.239004]   alloc irq_desc for 24 on node -1
[    1.239006]   alloc kstat_irqs on node -1
[    1.239014] pcieport 0000:00:01.0: irq 24 for MSI/MSI-X
[    1.239062] pcieport 0000:00:1c.0: setting latency timer to 64
[    1.239104]   alloc irq_desc for 25 on node -1
[    1.239105]   alloc kstat_irqs on node -1
[    1.239113] pcieport 0000:00:1c.0: irq 25 for MSI/MSI-X
[    1.239187] pcieport 0000:00:1c.1: setting latency timer to 64
[    1.239228]   alloc irq_desc for 26 on node -1
[    1.239229]   alloc kstat_irqs on node -1
[    1.239237] pcieport 0000:00:1c.1: irq 26 for MSI/MSI-X
[    1.239312] pcieport 0000:00:01.0: Requesting control of PCIe PME from ACPI BIOS
[    1.239583] \_SB_.PCI0:_OSC invalid UUID
[    1.239584] _OSC request data:1 0 1f 
[    1.239587] pcieport 0000:00:01.0: Failed to receive control of PCIe PME service: ACPI _OSC failed
[    1.239692] pcie_pme: probe of 0000:00:01.0:pcie01 failed with error -13
[    1.239763] pcieport 0000:00:1c.0: Requesting control of PCIe PME from ACPI BIOS
[    1.239962] \_SB_.PCI0:_OSC invalid UUID
[    1.239963] _OSC request data:1 0 1f 
[    1.239966] pcieport 0000:00:1c.0: Failed to receive control of PCIe PME service: ACPI _OSC failed
[    1.240068] pcie_pme: probe of 0000:00:1c.0:pcie01 failed with error -13
[    1.240139] pcieport 0000:00:1c.1: Requesting control of PCIe PME from ACPI BIOS
[    1.240338] \_SB_.PCI0:_OSC invalid UUID
[    1.240339] _OSC request data:1 0 1f 
[    1.240342] pcieport 0000:00:1c.1: Failed to receive control of PCIe PME service: ACPI _OSC failed
[    1.240444] pcie_pme: probe of 0000:00:1c.1:pcie01 failed with error -13
[    1.240527] pci_hotplug: PCI Hot Plug PCI Core version: 0.5
[    1.240703] \_SB_.PCI0:_OSC invalid UUID
[    1.240705] _OSC request data:1 0 1f 
[    1.240840] \_SB_.PCI0:_OSC invalid UUID
[    1.240841] _OSC request data:1 0 1f 
[    1.240987] \_SB_.PCI0:_OSC invalid UUID
[    1.240988] _OSC request data:1 0 1f 
[    1.241122] \_SB_.PCI0:_OSC invalid UUID
[    1.241124] _OSC request data:1 0 1f 
[    1.241154] pciehp: PCI Express Hot Plug Controller Driver version: 0.4
[    1.242210] ACPI: AC Adapter [ACAD] (on-line)
[    1.242331] input: Power Button as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0C:00/input/input0
[    1.242432] ACPI: Power Button [PWRB]
[    1.242520] input: Lid Switch as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0D:00/input/input1
[    1.243032] ACPI: Lid Switch [LID0]
[    1.243135] input: Power Button as /devices/LNXSYSTM:00/LNXPWRBN:00/input/input2
[    1.243231] ACPI: Power Button [PWRF]
[    1.244235] Monitor-Mwait will be used to enter C-1 state
[    1.244253] Monitor-Mwait will be used to enter C-3 state
[    1.250659] [Firmware Bug]: Invalid critical threshold (0)
[    1.252872] thermal LNXTHERM:01: registered as thermal_zone0
[    1.252944] ACPI: Thermal Zone [TZ01] (46 C)
[    1.254300] Linux agpgart interface v0.103
[    1.254376] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
[    1.255441] brd: module loaded
[    1.255828] loop: module loaded
[    1.256170] Fixed MDIO Bus: probed
[    1.256249] PPP generic driver version 2.4.2
[    1.256332] tun: Universal TUN/TAP device driver, 1.6
[    1.256396] tun: (C) 1999-2004 Max Krasnyansky <maxk@qualcomm.com>
[    1.256516] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[    1.256606] ehci_hcd 0000:00:1a.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[    1.256694] ehci_hcd 0000:00:1a.0: setting latency timer to 64
[    1.256698] ehci_hcd 0000:00:1a.0: EHCI Host Controller
[    1.256787] ehci_hcd 0000:00:1a.0: new USB bus registered, assigned bus number 1
[    1.256913] ehci_hcd 0000:00:1a.0: debug port 2
[    1.260859] ehci_hcd 0000:00:1a.0: cache line size of 64 is not supported
[    1.260878] ehci_hcd 0000:00:1a.0: irq 16, io mem 0xc4505c00
[    1.279509] ehci_hcd 0000:00:1a.0: USB 2.0 started, EHCI 1.00
[    1.279676] hub 1-0:1.0: USB hub found
[    1.279740] hub 1-0:1.0: 3 ports detected
[    1.279851]   alloc irq_desc for 21 on node -1
[    1.279853]   alloc kstat_irqs on node -1
[    1.279859] ehci_hcd 0000:00:1d.0: PCI INT A -> GSI 21 (level, low) -> IRQ 21
[    1.279955] ehci_hcd 0000:00:1d.0: setting latency timer to 64
[    1.279957] ehci_hcd 0000:00:1d.0: EHCI Host Controller
[    1.280040] ehci_hcd 0000:00:1d.0: new USB bus registered, assigned bus number 2
[    1.280157] ehci_hcd 0000:00:1d.0: debug port 2
[    1.284136] ehci_hcd 0000:00:1d.0: cache line size of 64 is not supported
[    1.284155] ehci_hcd 0000:00:1d.0: irq 21, io mem 0xc4505800
[    1.299217] ACPI: Battery Slot [BAT0] (battery present)
[    1.299473] ehci_hcd 0000:00:1d.0: USB 2.0 started, EHCI 1.00
[    1.299627] hub 2-0:1.0: USB hub found
[    1.299689] hub 2-0:1.0: 3 ports detected
[    1.299795] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[    1.299870] uhci_hcd: USB Universal Host Controller Interface driver
[    1.300005] PNP: PS/2 Controller [PNP0303:PS2K,PNP0f13:PS2M] at 0x60,0x64 irq 1,12
[    1.318118] serio: i8042 KBD port at 0x60,0x64 irq 1
[    1.318188] serio: i8042 AUX port at 0x60,0x64 irq 12
[    1.318300] mice: PS/2 mouse device common for all mice
[    1.318434] rtc_cmos 00:06: RTC can wake from S4
[    1.318535] rtc_cmos 00:06: rtc core: registered rtc_cmos as rtc0
[    1.318636] rtc0: alarms up to one year, y3k, 242 bytes nvram, hpet irqs
[    1.318795] device-mapper: uevent: version 1.0.3
[    1.318952] device-mapper: ioctl: 4.17.0-ioctl (2010-03-05) initialised: dm-devel@redhat.com
[    1.319138] device-mapper: multipath: version 1.1.1 loaded
[    1.319206] device-mapper: multipath round-robin: version 1.0.0 loaded
[    1.319532] cpuidle: using governor ladder
[    1.319680] cpuidle: using governor menu
[    1.319973] TCP cubic registered
[    1.320123] NET: Registered protocol family 10
[    1.320480] lo: Disabled Privacy Extensions
[    1.320719] NET: Registered protocol family 17
[    1.322525] PM: Resume from disk failed.
[    1.322534] registered taskstats version 1
[    1.322933]   Magic number: 6:611:789
[    1.323106] rtc_cmos 00:06: setting system clock to 2010-08-25 14:45:10 UTC (1282747510)
[    1.323206] BIOS EDD facility v0.16 2004-Jun-25, 0 devices found
[    1.323273] EDD information not available.
[    1.323405] Freeing unused kernel memory: 940k freed
[    1.323628] Write protecting the kernel read-only data: 10240k
[    1.323928] Freeing unused kernel memory: 708k freed
[    1.324214] Freeing unused kernel memory: 1700k freed
[    1.336023] udev: starting version 151
[    1.339649] input: AT Translated Set 2 keyboard as /devices/platform/i8042/serio0/input/input3
[    1.352469] agpgart-intel 0000:00:00.0: Intel HD Graphics Chipset
[    1.353651] agpgart-intel 0000:00:00.0: detected 32764K stolen memory
[    1.406651] [drm] Initialized drm 1.1.0 20060810
[    1.417444] r8169 Gigabit Ethernet driver 2.3LK-NAPI loaded
[    1.417561] r8169 0000:03:00.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17
[    1.417765] r8169 0000:03:00.0: setting latency timer to 64
[    1.417908]   alloc irq_desc for 27 on node -1
[    1.417911]   alloc kstat_irqs on node -1
[    1.417950] r8169 0000:03:00.0: irq 27 for MSI/MSI-X
[    1.418584] r8169 0000:03:00.0: eth0: RTL8168d/8111d at 0xffffc90000c7e000, 60:eb:69:12:cb:aa, XID 083000c0 IRQ 27
[    1.425144] agpgart-intel 0000:00:00.0: AGP aperture is 256M @ 0xb0000000
[    1.425268] ahci 0000:00:1f.2: version 3.0
[    1.425285]   alloc irq_desc for 19 on node -1
[    1.425287]   alloc kstat_irqs on node -1
[    1.425296] ahci 0000:00:1f.2: PCI INT B -> GSI 19 (level, low) -> IRQ 19
[    1.425413]   alloc irq_desc for 28 on node -1
[    1.425415]   alloc kstat_irqs on node -1
[    1.425432] ahci 0000:00:1f.2: irq 28 for MSI/MSI-X
[    1.425537] ahci 0000:00:1f.2: AHCI 0001.0300 32 slots 4 ports 3 Gbps 0x23 impl SATA mode
[    1.425647] ahci 0000:00:1f.2: flags: 64bit ncq sntf pm led clo pio slum part ems sxs apst 
[    1.425772] ahci 0000:00:1f.2: setting latency timer to 64
[    1.458281] pci 0000:01:00.0: power state changed by ACPI to D0
[    1.458365] pci 0000:01:00.0: power state changed by ACPI to D0
[    1.458436] pci 0000:01:00.0: enabling device (0000 -> 0003)
[    1.458510] pci 0000:01:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[    1.458590] pci 0000:01:00.0: setting latency timer to 64
[    1.458646] scsi0 : ahci
[    1.458764] [drm] Initialized radeon 1.33.0 20080528 for 0000:01:00.0 on minor 0
[    1.458803] scsi1 : ahci
[    1.458853] scsi2 : ahci
[    1.458903] scsi3 : ahci
[    1.458951] scsi4 : ahci
[    1.458998] scsi5 : ahci
[    1.459027] ata1: SATA max UDMA/133 abar m2048@0xc4505000 port 0xc4505100 irq 28
[    1.459030] ata2: SATA max UDMA/133 abar m2048@0xc4505000 port 0xc4505180 irq 28
[    1.459032] ata3: DUMMY
[    1.459033] ata4: DUMMY
[    1.459033] ata5: DUMMY
[    1.459036] ata6: SATA max UDMA/133 abar m2048@0xc4505000 port 0xc4505380 irq 28
[    1.533142] i915 0000:00:02.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[    1.533218] i915 0000:00:02.0: setting latency timer to 64
[    1.558272] mtrr: no more MTRRs available
[    1.558340] [drm] MTRR allocation failed.  Graphics performance may suffer.
[    1.558637]   alloc irq_desc for 29 on node -1
[    1.558642]   alloc kstat_irqs on node -1
[    1.558656] i915 0000:00:02.0: irq 29 for MSI/MSI-X
[    1.558664] [drm] set up 31M of stolen space
[    1.599621] usb 1-1: new high speed USB device using ehci_hcd and address 2
[    1.748102] hub 1-1:1.0: USB hub found
[    1.749071] hub 1-1:1.0: 6 ports detected
[    1.807464] ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
[    1.807519] ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
[    1.808614] ata6: SATA link down (SStatus 0 SControl 300)
[    1.809343] ata1.00: ATA-8: ST9500420AS, 0006HPM1, max UDMA/100
[    1.809445] ata1.00: 976773168 sectors, multi 16: LBA48 NCQ (depth 31/32), AA
[    1.811508] ata1.00: configured for UDMA/100
[    1.827030] ata2.00: ATAPI: hp       CDDVDW TS-L633N, 0300, max UDMA/100, ATAPI AN
[    1.827426] scsi 0:0:0:0: Direct-Access     ATA      ST9500420AS      0006 PQ: 0 ANSI: 5
[    1.827698] sd 0:0:0:0: Attached scsi generic sg0 type 0
[    1.827824] sd 0:0:0:0: [sda] 976773168 512-byte logical blocks: (500 GB/465 GiB)
[    1.828005] sd 0:0:0:0: [sda] Write Protect is off
[    1.828110] sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
[    1.828125] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[    1.828369]  sda:
[    1.847097] ata2.00: configured for UDMA/100
[    1.854060]  sda1 sda2 <
[    1.868586] usb 2-1: new high speed USB device using ehci_hcd and address 2
[    1.870216] scsi 1:0:0:0: CD-ROM            hp       CDDVDW TS-L633N  0300 PQ: 0 ANSI: 5
[    1.876805] sr0: scsi3-mmc drive: 24x/24x writer dvd-ram cd/rw xa/form2 cdda tray
[    1.876927] Uniform CD-ROM driver Revision: 3.20
[    1.877103] sr 1:0:0:0: Attached scsi CD-ROM sr0
[    1.877161] sr 1:0:0:0: Attached scsi generic sg1 type 5
[    1.881332]  sda5 >
[    1.881778] sd 0:0:0:0: [sda] Attached SCSI disk
[    2.018800] hub 2-1:1.0: USB hub found
[    2.019008] hub 2-1:1.0: 8 ports detected
[    2.139376] fb0: inteldrmfb frame buffer device
[    2.139437] registered panic notifier
[    2.147669] acpi device:01: registered as cooling_device4
[    2.148310] input: Video Bus as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/LNXVIDEO:00/input/input4
[    2.148428] ACPI: Video Device [GFX0] (multi-head: yes  rom: no  post: no)
[    2.154129] acpi device:13: registered as cooling_device5
[    2.160319] acpi device:14: registered as cooling_device6
[    2.160540] input: Video Bus as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/device:10/LNXVIDEO:02/input/input5
[    2.160661] ACPI: Video Device [VGA1] (multi-head: yes  rom: no  post: no)
[    2.160750] [drm] Initialized i915 1.6.0 20080730 for 0000:00:02.0 on minor 1
[    2.307844] usb 2-1.3: new full speed USB device using ehci_hcd and address 3
[    2.472097] Console: switching to colour frame buffer device 170x48
[    2.497704] usb 2-1.5: new high speed USB device using ehci_hcd and address 4
[    2.716931] mtrr: no more MTRRs available
[    2.875673] EXT4-fs (sda1): mounted filesystem with ordered data mode
[    4.558360] Adding 17340412k swap on /dev/sda5.  Priority:-1 extents:1 across:17340412k 
[    4.761360] udev: starting version 151
[    5.770875] input: HP WMI hotkeys as /devices/virtual/input/input6
[    5.775410] HP WMI: Unknown response received
[    6.288708] cfg80211: Calling CRDA to update world regulatory domain
[    6.348152] ip_tables: (C) 2000-2006 Netfilter Core Team
[    6.827682] Linux video capture interface: v2.00
[    6.868372] uvcvideo: Found UVC 1.00 device 2SF022 (0bda:5801)
[    6.887328] input: 2SF022 as /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.5/2-1.5:1.0/input/input7
[    6.887428] usbcore: registered new interface driver uvcvideo
[    6.887431] USB Video Class driver (v0.1.0)
[    7.060173] lp: driver loaded but no devices found
[    7.126882] iwlagn: Intel(R) Wireless WiFi Link AGN driver for Linux, in-tree:
[    7.126885] iwlagn: Copyright(c) 2003-2010 Intel Corporation
[    7.126975] iwlagn 0000:02:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[    7.127003] iwlagn 0000:02:00.0: setting latency timer to 64
[    7.127103] iwlagn 0000:02:00.0: Detected Intel Wireless WiFi Link 1000 Series BGN REV=0x6C
[    7.129692] lis3lv02d: laptop model unknown, using default axes configuration
[    7.130673] lis3lv02d: 8 bits sensor found
[    7.147971] iwlagn 0000:02:00.0: Tunable channels: 13 802.11bg, 0 802.11a channels
[    7.148063]   alloc irq_desc for 30 on node -1
[    7.148065]   alloc kstat_irqs on node -1
[    7.148106] iwlagn 0000:02:00.0: irq 30 for MSI/MSI-X
[    7.148313] iwlagn 0000:02:00.0: firmware: requesting iwlwifi-1000-3.ucode
[    7.179969] input: ST LIS3LV02DL Accelerometer as /devices/platform/lis3lv02d/input/input8
[    7.180068] Registered led device: hp::hddprotect
[    7.180087] lis3lv02d driver loaded.
[    7.249244] nf_conntrack version 0.5.0 (16384 buckets, 65536 max)
[    7.249627] CONFIG_NF_CT_ACCT is deprecated and will be removed soon. Please use
[    7.249630] nf_conntrack.acct=1 kernel parameter, acct=1 nf_conntrack module option or
[    7.249631] sysctl net.netfilter.nf_conntrack_acct=1 to enable it.
[    7.254528] iwlagn 0000:02:00.0: loaded firmware version 128.50.3.1
[    7.371474] phy0: Selected rate control algorithm 'iwl-agn-rs'
[    7.550557] cfg80211: World regulatory domain updated:
[    7.550560]     (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
[    7.550562]     (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[    7.550564]     (2457000 KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
[    7.550566]     (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
[    7.550568]     (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[    7.550569]     (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[    7.618406]   alloc irq_desc for 22 on node -1
[    7.618410]   alloc kstat_irqs on node -1
[    7.618418] HDA Intel 0000:00:1b.0: PCI INT A -> GSI 22 (level, low) -> IRQ 22
[    7.618497]   alloc irq_desc for 31 on node -1
[    7.618499]   alloc kstat_irqs on node -1
[    7.618512] HDA Intel 0000:00:1b.0: irq 31 for MSI/MSI-X
[    7.618546] HDA Intel 0000:00:1b.0: setting latency timer to 64
[    7.846296] input: HDA Digital PCBeep as /devices/pci0000:00/0000:00:1b.0/input/input9
[    7.878872] input: HDA Intel Mic at Ext Front Jack as /devices/pci0000:00/0000:00:1b.0/sound/card0/input10
[    7.878950] input: HDA Intel HP Out at Ext Front Jack as /devices/pci0000:00/0000:00:1b.0/sound/card0/input11
[    7.879498] HDA Intel 0000:01:00.1: PCI INT B -> GSI 17 (level, low) -> IRQ 17
[    7.879572]   alloc irq_desc for 32 on node -1
[    7.879574]   alloc kstat_irqs on node -1
[    7.879586] HDA Intel 0000:01:00.1: irq 32 for MSI/MSI-X
[    7.879615] HDA Intel 0000:01:00.1: setting latency timer to 64
[    8.165958] Synaptics Touchpad, model: 1, fw: 7.4, id: 0x1e0b1, caps: 0xd04771/0xe40000/0x5a0400
[    8.243049] ip6_tables: (C) 2000-2006 Netfilter Core Team
[    8.245524] input: SynPS/2 Synaptics TouchPad as /devices/platform/i8042/serio1/input/input12
[   11.342481] ADDRCONF(NETDEV_UP): wlan0: link is not ready
[   11.383399] r8169 0000:03:00.0: eth0: link up
[   11.383415] r8169 0000:03:00.0: eth0: link up
[   14.146406] ppdev: user-space parallel port driver
[   21.565999] eth0: no IPv6 routers present
[   34.020389] vgaarb: device changed decodes: PCI:0000:00:02.0,olddecodes=io+mem,decodes=none:owns=io+mem
[   34.020392] vgaarb: transferring owner from PCI:0000:00:02.0 to PCI:0000:01:00.0
[   34.021920] mtrr: no more MTRRs available
[   34.021982] mtrr: no more MTRRs available
[   42.121311] hda-intel: IRQ timing workaround is activated for card #1. Suggest a bigger bdl_pos_adj.
[   61.048675] Corrupted low memory at ffff880000006598 (6598 phys) = df0000000000
[   61.048721] ------------[ cut here ]------------
[   61.048729] WARNING: at /home/kernel-ppa/mainline/build/arch/x86/kernel/check.c:134 check_for_bios_corruption+0xea/0x100()
[   61.048731] Hardware name: HP Pavilion dv6 Notebook PC
[   61.048732] Memory corruption detected in low memory
[   61.048733] Modules linked in: binfmt_misc ppdev ipt_REJECT ipt_LOG xt_limit xt_tcpudp ipt_addrtype xt_state dm_crypt ip6table_filter ip6_tables snd_hda_codec_atihdmi nf_nat_irc snd_hda_codec_idt nf_conntrack_irc nf_nat_ftp nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 snd_hda_intel snd_seq_dummy nf_conntrack_ftp snd_hda_codec snd_hwdep snd_pcm_oss snd_mixer_oss snd_pcm arc4 snd_seq_oss joydev snd_seq_midi nf_conntrack snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device hp_accel psmouse iwlagn iwlcore uvcvideo videodev iptable_filter lis3lv02d snd v4l1_compat mac80211 ip_tables soundcore x_tables v4l2_compat_ioctl32 serio_raw lp input_polldev cfg80211 snd_page_alloc led_class parport hp_wmi fbcon tileblit font bitblit softcursor i915 radeon ttm drm_kms_helper r8169 video mii output ahci drm i2c_algo_bit intel_agp
[   61.048781] Pid: 17, comm: events/2 Not tainted 2.6.34-020634-generic #020634
[   61.048782] Call Trace:
[   61.048788]  [<ffffffff8103402a>] ? check_for_bios_corruption+0xea/0x100
[   61.048792]  [<ffffffff8105f1dc>] warn_slowpath_common+0x8c/0xc0
[   61.048794]  [<ffffffff8105f299>] warn_slowpath_fmt+0x69/0x70
[   61.048799]  [<ffffffff81340bf0>] ? vt_console_print+0x0/0x300
[   61.048804]  [<ffffffff8100985b>] ? __switch_to+0xbb/0x2e0
[   61.048808]  [<ffffffff8105118e>] ? put_prev_entity+0x2e/0x80
[   61.048810]  [<ffffffff81051af6>] ? finish_task_switch+0x66/0xd0
[   61.048813]  [<ffffffff8103402a>] check_for_bios_corruption+0xea/0x100
[   61.048815]  [<ffffffff81034040>] ? check_corruption+0x0/0x40
[   61.048818]  [<ffffffff8103404e>] check_corruption+0xe/0x40
[   61.048794]  [<ffffffff8105f299>] warn_slowpath_fmt+0x69/0x70
[   61.048799]  [<ffffffff81340bf0>] ? vt_console_print+0x0/0x300
[   61.048804]  [<ffffffff8100985b>] ? __switch_to+0xbb/0x2e0
[   61.048808]  [<ffffffff8105118e>] ? put_prev_entity+0x2e/0x80
[   61.048810]  [<ffffffff81051af6>] ? finish_task_switch+0x66/0xd0
[   61.048813]  [<ffffffff8103402a>] check_for_bios_corruption+0xea/0x100
[   61.048815]  [<ffffffff81034040>] ? check_corruption+0x0/0x40
[   61.048818]  [<ffffffff8103404e>] check_corruption+0xe/0x40
[   61.048821]  [<ffffffff8107a0fc>] run_workqueue+0xbc/0x190
[   61.048825]  [<ffffffff8107ab4b>] worker_thread+0x9b/0x100
[   61.048828]  [<ffffffff8107edb0>] ? autoremove_wake_function+0x0/0x40
[   61.048830]  [<ffffffff8107aab0>] ? worker_thread+0x0/0x100
[   61.048832]  [<ffffffff8107e9d6>] kthread+0x96/0xa0
[   61.048835]  [<ffffffff8100be64>] kernel_thread_helper+0x4/0x10
[   61.048838]  [<ffffffff8107e940>] ? kthread+0x0/0xa0
[   61.048840]  [<ffffffff8100be60>] ? kernel_thread_helper+0x0/0x10
[   61.048842] ---[ end trace 6cc9df022c0959a9 ]---
[  120.973722] Corrupted low memory at ffff880000006598 (6598 phys) = df0000000000
[  180.901215] Corrupted low memory at ffff880000006598 (6598 phys) = df0000000000
[  360.678592] Corrupted low memory at ffff880000006598 (6598 phys) = df0000000000

***

# dmidecode 2.9

SMBIOS 2.6 present.
33 structures occupying 1635 bytes.
Table at 0x000E9630.

Handle 0x0000, DMI type 0, 24 bytes
BIOS Information
	Vendor: Hewlett-Packard
	Version: F.09
	Release Date: 06/22/2010
	ROM Size: 1536 kB
	Characteristics:
		PCI is supported
		BIOS is upgradeable
		BIOS shadowing is allowed
		Boot from CD is supported
		Selectable boot is supported
		EDD is supported
		Japanese floppy for NEC 9800 1.2 MB is supported (int 13h)
		Japanese floppy for Toshiba 1.2 MB is supported (int 13h)
		5.25"/360 KB floppy services are supported (int 13h)
		5.25"/1.2 MB floppy services are supported (int 13h)
		3.5"/720 KB floppy services are supported (int 13h)
		3.5"/2.88 MB floppy services are supported (int 13h)
		8042 keyboard services are supported (int 9h)
		CGA/mono video services are supported (int 10h)
		ACPI is supported
		USB legacy is supported
		BIOS boot specification is supported
		Targeted content distribution is supported
	BIOS Revision: 15.9
	Firmware Revision: 101.25

Handle 0x0001, DMI type 1, 27 bytes
System Information
	Manufacturer: Hewlett-Packard
	Product Name: HP Pavilion dv6 Notebook PC
	Version: 0488100000242B10000620000
	Serial Number: CNF0321MPW
	UUID: 434E4630-3332-314D-5057-60EB6912CBAA
	Wake-up Type: Power Switch
	SKU Number: WF536AV
	Family: 103C_5335KV

Handle 0x0002, DMI type 2, 16 bytes
Base Board Information
	Manufacturer: Hewlett-Packard
	Product Name: 144A
	Version: 65.19
	Serial Number: CNF0321MPW
	Asset Tag: Base Board Asset Tag
	Features:
		Board is a hosting board
		Board is replaceable
	Location In Chassis: Base Board Chassis Location
	Chassis Handle: 0x0003
	Type: Motherboard
	Contained Object Handles: 0

Handle 0x0003, DMI type 3, 22 bytes
Chassis Information
	Manufacturer: Hewlett-Packard
	Type: Notebook
	Lock: Not Present
	Version: N/A
	Serial Number: None
	Asset Tag:                     
	Boot-up State: Safe
	Power Supply State: Safe
	Thermal State: Safe
	Security Status: None
	OEM Information: 0x0000012B
	Height: Unspecified
	Number Of Power Cords: 1
	Contained Elements: 0

Handle 0x0004, DMI type 9, 17 bytes
System Slot Information
	Designation: PCI Express Graphic X16
	Type: x16 <OUT OF SPEC>
	Current Usage: Available
	Length: Other
	Characteristics:
		PME signal is supported
		Hot-plug devices are supported

Handle 0x0005, DMI type 9, 17 bytes
System Slot Information
	Designation: PCI Express X1-0
	Type: x1 <OUT OF SPEC>
	Current Usage: Available
	Length: Other
	Characteristics:
		PME signal is supported
		Hot-plug devices are supported

Handle 0x0006, DMI type 9, 17 bytes
System Slot Information
	Designation: PCI Express X1-1
	Type: x1 <OUT OF SPEC>
	Current Usage: Available
	Length: Other
	Characteristics:
		PME signal is supported
		Hot-plug devices are supported

Handle 0x0007, DMI type 10, 6 bytes
On Board Device Information
	Type: Video
	Status: Enabled
	Description: Video Graphics Controller

Handle 0x0008, DMI type 10, 6 bytes
On Board Device Information
	Type: Ethernet
	Status: Enabled
	Description: Realtek Lan Controller

Handle 0x0009, DMI type 11, 5 bytes
OEM Strings
	String 1: $HP$
	String 2: LOC#ABA
	String 3: ABS 70/71 79 7A 7B 7C
	String 4: CNB1 0488100000242B10000620000
	String 5: HP_Mute_LED_0_0

Handle 0x000A, DMI type 12, 5 bytes
System Configuration Options
	Option 1: String1 for Type12 Equipment Manufacturer
	Option 2: String2 for Type12 Equipment Manufacturer
	Option 3: String3 for Type12 Equipment Manufacturer
	Option 4: String4 for Type12 Equipment Manufacturer

Handle 0x000B, DMI type 15, 29 bytes
System Event Log
	Area Length: 0 bytes
	Header Start Offset: 0x0000
	Data Start Offset: 0x0000
	Access Method: General-purpose non-volatile data functions
	Access Address: 0x0000
	Status: Valid, Not Full
	Change Token: 0x12345678
	Header Format: OEM-specific
	Supported Log Type Descriptors: 3
	Descriptor 1: POST memory resize
	Data Format 1: None
	Descriptor 2: POST error
	Data Format 2: POST results bitmap
	Descriptor 3: Log area reset/cleared
	Data Format 3: None

Handle 0x000C, DMI type 21, 7 bytes
Built-in Pointing Device
	Type: Touch Pad
	Interface: PS/2
	Buttons: 4

Handle 0x000D, DMI type 22, 26 bytes
Portable Battery
	Location: In the back
	Manufacturer: CPT-U26F
	Name: MU06055
	Chemistry: Lithium Ion
	Design Capacity: 5100 mWh
	Design Voltage: 10800 mV
	SBDS Version: 3.1
	Maximum Error: 1%
	SBDS Serial Number: 12CC
	SBDS Manufacture Date: 2010-04-16
	OEM-specific Information: 0xFFFFFFFF

Handle 0x000E, DMI type 32, 20 bytes
System Boot Information
	Status: No errors detected

Handle 0x000F, DMI type 41, 11 bytes
Unknown Type
	Header and Data:
		29 0B 0F 00 01 83 01 00 00 00 02
	Strings:
		Intel(R) Graphics Media Accelerator HD

Handle 0x0010, DMI type 41, 11 bytes
Unknown Type
	Header and Data:
		29 0B 10 00 01 83 01 00 00 01 00
	Strings:
		ATI EG PARK

Handle 0x0011, DMI type 41, 11 bytes
Unknown Type
	Header and Data:
		29 0B 11 00 01 81 01 00 00 02 00
	Strings:
		Intel(R) Centrino(R) Advanced-N 1000 AGN

Handle 0x0012, DMI type 4, 42 bytes
Processor Information
	Socket Designation: CPU
	Type: Central Processor
	Family: <OUT OF SPEC>
	Manufacturer: Intel(R) Corporation
	ID: 55 06 02 00 FF FB EB BF
	Version: Intel(R) Core(TM) i5 CPU       M 450  @ 2.40GHz
	Voltage: 0.0 V
	External Clock: 1066 MHz
	Max Speed: 2400 MHz
	Current Speed: 2400 MHz
	Status: Populated, Enabled
	Upgrade: ZIF Socket
	L1 Cache Handle: 0x0016
	L2 Cache Handle: 0x0015
	L3 Cache Handle: 0x0013
	Serial Number: Not Specified
	Asset Tag: FFFF
	Part Number: Not Specified
	Core Count: 2
	Core Enabled: 2
	Thread Count: 4
	Characteristics:
		64-bit capable

Handle 0x0013, DMI type 7, 19 bytes
Cache Information
	Socket Designation: L3 Cache
	Configuration: Enabled, Not Socketed, Level 3
	Operational Mode: Write Through
	Location: Internal
	Installed Size: 3072 KB
	Maximum Size: 3072 KB
	Supported SRAM Types:
		Synchronous
	Installed SRAM Type: Synchronous
	Speed: Unknown
	Error Correction Type: Single-bit ECC
	System Type: Unified
	Associativity: Other

Handle 0x0014, DMI type 7, 19 bytes
Cache Information
	Socket Designation: L1 Cache
	Configuration: Enabled, Not Socketed, Level 1
	Operational Mode: Write Through
	Location: Internal
	Installed Size: 32 KB
	Maximum Size: 32 KB
	Supported SRAM Types:
		Synchronous
	Installed SRAM Type: Synchronous
	Speed: Unknown
	Error Correction Type: Single-bit ECC
	System Type: Data
	Associativity: 8-way Set-associative

Handle 0x0015, DMI type 7, 19 bytes
Cache Information
	Socket Designation: L2 Cache
	Configuration: Enabled, Not Socketed, Level 2
	Operational Mode: Write Through
	Location: Internal
	Installed Size: 256 KB
	Maximum Size: 256 KB
	Supported SRAM Types:
		Synchronous
	Installed SRAM Type: Synchronous
	Speed: Unknown
	Error Correction Type: Single-bit ECC
	System Type: Unified
	Associativity: 8-way Set-associative

Handle 0x0016, DMI type 7, 19 bytes
Cache Information
	Socket Designation: L1 Cache
	Configuration: Enabled, Not Socketed, Level 1
	Operational Mode: Write Through
	Location: Internal
	Installed Size: 32 KB
	Maximum Size: 32 KB
	Supported SRAM Types:
		Synchronous
	Installed SRAM Type: Synchronous
	Speed: Unknown
	Error Correction Type: Single-bit ECC
	System Type: Instruction
	Associativity: 4-way Set-associative

Handle 0x0017, DMI type 16, 15 bytes
Physical Memory Array
	Location: System Board Or Motherboard
	Use: System Memory
	Error Correction Type: None
	Maximum Capacity: 8 GB
	Error Information Handle: No Error
	Number Of Devices: 2

Handle 0x0018, DMI type 17, 28 bytes
Memory Device
	Array Handle: 0x0017
	Error Information Handle: 0x0019
	Total Width: 64 bits
	Data Width: 64 bits
	Size: 2048 MB
	Form Factor: SODIMM
	Set: None
	Locator: Bottom - Slot 1
	Bank Locator: BANK 0
	Type: <OUT OF SPEC>
	Type Detail: Synchronous
	Speed: 1067 MHz (0.9 ns)
	Manufacturer: ELPIDA
	Serial Number: 73FE2269
	Asset Tag: Unknown
	Part Number: EBJ21UE8BDS0-DJ-F 

Handle 0x0019, DMI type 18, 23 bytes
32-bit Memory Error Information
	Type: OK
	Granularity: Unknown
	Operation: Unknown
	Vendor Syndrome: Unknown
	Memory Array Address: Unknown
	Device Address: Unknown
	Resolution: Unknown

Handle 0x001A, DMI type 20, 19 bytes
Memory Device Mapped Address
	Starting Address: 0x00000000000
	Ending Address: 0x0007FFFFFFF
	Range Size: 2 GB
	Physical Device Handle: 0x0018
	Memory Array Mapped Address Handle: 0x001F
	Partition Row Position: 2
	Interleave Position: 1
	Interleaved Data Depth: 1

Handle 0x001B, DMI type 17, 28 bytes
Memory Device
	Array Handle: 0x0017
	Error Information Handle: 0x001C
	Total Width: 64 bits
	Data Width: 64 bits
	Size: 4096 MB
	Form Factor: SODIMM
	Set: None
	Locator: Bottom - Slot 2
	Bank Locator: BANK 1
	Type: <OUT OF SPEC>
	Type Detail: Synchronous
	Speed: 1067 MHz (0.9 ns)
	Manufacturer: Micron
	Serial Number: 352864FB
	Asset Tag: Unknown
	Part Number: 16JSF51264HZ-1G4D1

Handle 0x001C, DMI type 18, 23 bytes
32-bit Memory Error Information
	Type: OK
	Granularity: Unknown
	Operation: Unknown
	Vendor Syndrome: Unknown
	Memory Array Address: Unknown
	Device Address: Unknown
	Resolution: Unknown

Handle 0x001D, DMI type 20, 19 bytes
Memory Device Mapped Address
	Starting Address: 0x00000000000
	Ending Address: 0x000FFFFFFFF
	Range Size: 4 GB
	Physical Device Handle: 0x001B
	Memory Array Mapped Address Handle: 0x001F
	Partition Row Position: 2
	Interleave Position: 2
	Interleaved Data Depth: 1

Handle 0x001E, DMI type 18, 23 bytes
32-bit Memory Error Information
	Type: OK
	Granularity: Unknown
	Operation: Unknown
	Vendor Syndrome: Unknown
	Memory Array Address: Unknown
	Device Address: Unknown
	Resolution: Unknown

Handle 0x001F, DMI type 19, 15 bytes
Memory Array Mapped Address
	Starting Address: 0x00000000000
	Ending Address: 0x0017FFFFFFF
	Range Size: 6 GB
	Physical Array Handle: 0x0017
	Partition Width: 0

Handle 0x0020, DMI type 127, 4 bytes
End Of Table
Comment 10 H. Peter Anvin 2010-08-25 23:46:31 UTC
I'm actually thinking that the checker is rather pointless, since all it does is reserve memory and run a corruption checker over it; this was one thing when we *thought* there was a problem, but now we *know* there is a problem across a very large number of machines.
Comment 11 cjkosciuk 2010-08-26 04:25:09 UTC
I haven't experienced any negative performance issues since disabling it (knock on wood).
Comment 12 tob 2010-09-17 06:23:03 UTC
It looks like it might be a problem with the HP BIOS. I am having the same problem with my HP dv7t select laptop running kubuntu 10.10 Beta with the mainline 2.6.36-rc4 kernel.


[   62.496794] Corrupted low memory at ffff880000006598 (6598 phys) = cc0000000000
[   62.496840] ------------[ cut here ]------------
[   62.496852] WARNING: at /home/kernel-ppa/COD/linux/arch/x86/kernel/check.c:134 check_for_bios_corruption+0xea/0x100()
[   62.496857] Hardware name: HP Pavilion dv7 Notebook PC
[   62.496860] Memory corruption detected in low memory
[   62.496864] Modules linked in: cryptd aes_x86_64 aes_generic parport_pc ppdev snd_hda_codec_atihdmi rfcomm sco bnep l2cap snd_hda_codec_idt snd_hda_intel snd_hda_codec snd_hwdep arc4 snd_pcm radeon snd_seq_midi uvcvideo iwlagn videodev v4l1_compat snd_rawmidi snd_seq_midi_event snd_seq v4l2_compat_ioctl32 iwlcore snd_timer ttm drm_kms_helper snd_seq_device drm i2c_algo_bit snd soundcore btusb mac80211 i7core_edac video psmouse joydev snd_page_alloc cfg80211 edac_core output bluetooth shpchp hp_accel lis3lv02d input_polldev serio_raw led_class lp hp_wmi parport r8169 ahci libahci mii
[   62.496931] Pid: 46, comm: kworker/3:1 Not tainted 2.6.36-020636rc4-generic #201009130905
[   62.496933] Call Trace:
[   62.496937]  [<ffffffff810380fa>] ? check_for_bios_corruption+0xea/0x100
[   62.496940]  [<ffffffff81062550>] warn_slowpath_common+0x90/0xc0
[   62.496943]  [<ffffffff8106267e>] warn_slowpath_fmt+0x6e/0x70
[   62.496947]  [<ffffffff812c0def>] ? rb_erase+0xbf/0x140
[   62.496950]  [<ffffffff8100989b>] ? __switch_to+0xbb/0x2e0
[   62.496954]  [<ffffffff81053726>] ? finish_task_switch+0x66/0xd0
[   62.496956]  [<ffffffff810380fa>] check_for_bios_corruption+0xea/0x100
[   62.496958]  [<ffffffff8103811e>] check_corruption+0xe/0x40
[   62.496961]  [<ffffffff8107ddbe>] process_one_work+0x10e/0x390
[   62.496963]  [<ffffffff81038110>] ? check_corruption+0x0/0x40
[   62.496965]  [<ffffffff8107e2fd>] worker_thread+0xdd/0x260
[   62.496967]  [<ffffffff8107e220>] ? worker_thread+0x0/0x260
[   62.496970]  [<ffffffff81082987>] kthread+0x97/0xa0
[   62.496973]  [<ffffffff8100bea4>] kernel_thread_helper+0x4/0x10
[   62.496975]  [<ffffffff810828f0>] ? kthread+0x0/0xa0
[   62.496977]  [<ffffffff8100bea0>] ? kernel_thread_helper+0x0/0x10
[   62.496979] ---[ end trace 26b45c904ff5b6eb ]---
Comment 13 tob 2010-09-17 06:33:45 UTC
I forgot to add that this bug did not occur with kubuntu 10.04 running the 2.6.32 kernel or openSUSE 11.3 with 2.6.34.  What changed in 2.6.35 that might have caused this error? Or, are ubuntu 10.04 and openSUSE 11.3 just disabling this error message somehow?
Comment 14 H. Peter Anvin 2010-09-17 16:01:31 UTC
It's a kernel compile option.
Comment 15 Florian Mickler 2011-01-24 12:43:12 UTC
a fix for this has been merged in .37-rc1:
commit d0cd7425fab774a480cce17c2f649984312d0b55
Author: H. Peter Anvin <hpa@linux.intel.com>
Date:   Tue Aug 24 17:32:04 2010 -0700

    x86, bios: By default, reserve the low 64K for all BIOSes

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