Subject: kdump regression compared to v2.6.35

From: CAI Qian <[email-masked]>
Date: Fri, 27 Aug 2010 08:35:00 -0400 (EDT)

Just a head-up, the kdump kernel is stuck here. Bisect indicated that cc41f5cede3c63836d1c0958204630b07f5b5ee7 was also good.

Kernel command line: ro root=/dev/mapper/vg_intels3e3601-lv_root rd_LVM_LV=vg_intels3e3601/lv_root rd_LVM_LV=vg_intels3e3601/lv_swap rd_NO_LUKS rd_NO_MD rd_NO_DM LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun16 KEYBOARDTYPE=pc KEYTABLE=us console=ttyS0,115200 irqpoll maxcpus=1 reset_devices cgroup_disable=memory  memmap=exactmap memmap=640K@0K memmap=130412K@49792K elfcorehdr=180204K memmap=128K$896K memmap=2124K#1978520K memmap=4280K#1980644K memmap=464K$1984924K memmap=156K#1985388K memmap=84K$1985544K memmap=92K#1985628K memmap=8K$1985720K memmap=124K#1985728K memmap=136K$1985852K memmap=192K#1985988K memmap=260K$1986180K memmap=2816K#1986440K memmap=176K$1989256K memmap=3028K#1989432K memmap=2048K#1992460K memmap=2072K#1994508K memmap=8K$1996580K memmap=324K#1996588K memmap=428K$1996912K mem
 map=31584K#1997340K memmap=960K$2028924K memmap=1248K#2029884K memmap=288K#2031132K memmap=192K#2031420K memmap=327684K$2031612K memmap=16384K$4128768K memmap=16K$4174960K memmap=16384K$417!
 7920K
Misrouted IRQ fixup and polling support enabled
This may significantly impact system performance
Disabling memory control group subsystem
PID hash table entries: 512 (order: 0, 4096 bytes)
Checking aperture...
No AGP bridge found
Queued invalidation will be enabled to support x2apic and Intr-remapping.
Subtract (141 early reservations)
  #1 [0004000000 - 00052b1548]   TEXT DATA BSS
  #2 [000ab63000 - 000afef000]         RAMDISK
  #3 [00052b2000 - 00052b2220]             BRK
  #4 [000009b000 - 00000fdd20]   BIOS reserved
  #5 [00000fdd30 - 0000100000]   BIOS reserved
  #6 [00000fdd20 - 00000fdd30]    MP-table mpf
  #7 [0000000012 - 000000f012]    MP-table mpc
  #8 [0000010000 - 0000012000]      TRAMPOLINE
  #9 [0000012000 - 0000016000]     ACPI WAKEUP
  #10 [0000016000 - 0000017000]         PGTABLE
  #11 [0000017000 - 000001703c]       ACPI SLIT
  #12 [000000f040 - 000000f4c0]      MEMNODEMAP
  #13 [00030a0000 - 00030c7000]       NODE_DATA
  #14 [00030c7000 - 00030c8000]         BOOTMEM
  #15 [00034c8000 - 00034c8030]         BOOTMEM
  #16 [00038c9000 - 00038ca000]         BOOTMEM
  #17 [00038ca000 - 00038cb000]         BOOTMEM
  #18 [0003a00000 - 0003e00000]        MEMMAP 0
  #19 [00030c8000 - 00030e0000]         BOOTMEM
  #20 [00030e0000 - 00030f8000]         BOOTMEM
  #21 [00030f8000 - 00030f9000]         BOOTMEM
  #22 [00030f9000 - 00030f9041]         BOOTMEM
  #23 [00030f9080 - 00030f9149]         BOOTMEM
  #24 [00030f9180 - 00030f9768]         BOOTMEM
  #25 [00030f9780 - 00030f97e8]         BOOTMEM
  #26 [00030f9800 - 00030f9868]         BOOTMEM
  #27 [00030f9880 - 00030f98e8]         BOOTMEM
  #28 [00030f9900 - 00030f9968]         BOOTMEM
  #29 [00030f9980 - 00030f99e8]         BOOTMEM
  #30 [00030f9a00 - 00030f9a68]         BOOTMEM
  #31 [00030f9a80 - 00030f9ae8]         BOOTMEM
  #32 [00030f9b00 - 00030f9b68]         BOOTMEM
  #33 [00030f9b80 - 00030f9be8]         BOOTMEM
  #34 [00030f9c00 - 00030f9c68]         BOOTMEM
  #35 [00030f9c80 - 00030f9ce8]         BOOTMEM
  #36 [00030f9d00 - 00030f9d68]         BOOTMEM
  #37 [00030f9d80 - 00030f9de8]         BOOTMEM
  #38 [00030f9e00 - 00030f9e68]         BOOTMEM
  #39 [00030f9e80 - 00030f9ee8]         BOOTMEM
  #40 [00030f9f00 - 00030f9f68]         BOOTMEM
  #41 [00030f9f80 - 00030f9fe8]         BOOTMEM
  #42 [00030fa000 - 00030fa068]         BOOTMEM
  #43 [00030fa080 - 00030fa0e8]         BOOTMEM
  #44 [00030fa100 - 00030fa168]         BOOTMEM
  #45 [00030fa180 - 00030fa1e8]         BOOTMEM
  #46 [00030fa200 - 00030fa268]         BOOTMEM
  #47 [00030fa280 - 00030fa2e8]         BOOTMEM
  #48 [00030fa300 - 00030fa368]         BOOTMEM
  #49 [00030fa380 - 00030fa3e8]         BOOTMEM
  #50 [00030fa400 - 00030fa468]         BOOTMEM
  #51 [00030fa480 - 00030fa4e8]         BOOTMEM
  #52 [00030fa500 - 00030fa568]         BOOTMEM
  #53 [00030fa580 - 00030fa5e8]         BOOTMEM
  #54 [00030fa600 - 00030fa668]         BOOTMEM
  #55 [00030fa680 - 00030fa6e8]         BOOTMEM
  #56 [00030fa700 - 00030fa768]         BOOTMEM
  #57 [00030fa780 - 00030fa7e8]         BOOTMEM
  #58 [00030fa800 - 00030fa820]         BOOTMEM
  #59 [00030fa840 - 00030fac0e]         BOOTMEM
  #60 [00030fac40 - 00030fb00e]         BOOTMEM
  #61 [0005400000 - 000541e000]         BOOTMEM
  #62 [0005420000 - 000543e000]         BOOTMEM
  #63 [0005440000 - 000545e000]         BOOTMEM
  #64 [0005460000 - 000547e000]         BOOTMEM
  #65 [0005480000 - 000549e000]         BOOTMEM
  #66 [00054a0000 - 00054be000]         BOOTMEM
  #67 [00054c0000 - 00054de000]         BOOTMEM
  #68 [00054e0000 - 00054fe000]         BOOTMEM
  #69 [0005500000 - 000551e000]         BOOTMEM
  #70 [0005520000 - 000553e000]         BOOTMEM
  #71 [0005540000 - 000555e000]         BOOTMEM
  #72 [0005560000 - 000557e000]         BOOTMEM
  #73 [0005580000 - 000559e000]         BOOTMEM
  #74 [00055a0000 - 00055be000]         BOOTMEM
  #75 [00055c0000 - 00055de000]         BOOTMEM
  #76 [00055e0000 - 00055fe000]         BOOTMEM
  #77 [0005600000 - 000561e000]         BOOTMEM
  #78 [0005620000 - 000563e000]         BOOTMEM
  #79 [0005640000 - 000565e000]         BOOTMEM
  #80 [0005660000 - 000567e000]         BOOTMEM
  #81 [0005680000 - 000569e000]         BOOTMEM
  #82 [00056a0000 - 00056be000]         BOOTMEM
  #83 [00056c0000 - 00056de000]         BOOTMEM
  #84 [00056e0000 - 00056fe000]         BOOTMEM
  #85 [0005700000 - 000571e000]         BOOTMEM
  #86 [0005720000 - 000573e000]         BOOTMEM
  #87 [0005740000 - 000575e000]         BOOTMEM
  #88 [0005760000 - 000577e000]         BOOTMEM
  #89 [0005780000 - 000579e000]         BOOTMEM
  #90 [00057a0000 - 00057be000]         BOOTMEM
  #91 [00057c0000 - 00057de000]         BOOTMEM
  #92 [00057e0000 - 00057fe000]         BOOTMEM
  #93 [0005800000 - 000581e000]         BOOTMEM
  #94 [0005820000 - 000583e000]         BOOTMEM
  #95 [0005840000 - 000585e000]         BOOTMEM
  #96 [0005860000 - 000587e000]         BOOTMEM
  #97 [0005880000 - 000589e000]         BOOTMEM
  #98 [00058a0000 - 00058be000]         BOOTMEM
  #99 [00058c0000 - 00058de000]         BOOTMEM
  #100 [00058e0000 - 00058fe000]         BOOTMEM
  #101 [0005900000 - 000591e000]         BOOTMEM
  #102 [0005920000 - 000593e000]         BOOTMEM
  #103 [0005940000 - 000595e000]         BOOTMEM
  #104 [0005960000 - 000597e000]         BOOTMEM
  #105 [0005980000 - 000599e000]         BOOTMEM
  #106 [00059a0000 - 00059be000]         BOOTMEM
  #107 [00059c0000 - 00059de000]         BOOTMEM
  #108 [00059e0000 - 00059fe000]         BOOTMEM
  #109 [0005a00000 - 0005a1e000]         BOOTMEM
  #110 [0005a20000 - 0005a3e000]         BOOTMEM
  #111 [0005a40000 - 0005a5e000]         BOOTMEM
  #112 [0005a60000 - 0005a7e000]         BOOTMEM
  #113 [0005a80000 - 0005a9e000]         BOOTMEM
  #114 [0005aa0000 - 0005abe000]         BOOTMEM
  #115 [0005ac0000 - 0005ade000]         BOOTMEM
  #116 [0005ae0000 - 0005afe000]         BOOTMEM
  #117 [0005b00000 - 0005b1e000]         BOOTMEM
  #118 [0005b20000 - 0005b3e000]         BOOTMEM
  #119 [0005b40000 - 0005b5e000]         BOOTMEM
  #120 [0005b60000 - 0005b7e000]         BOOTMEM
  #121 [0005b80000 - 0005b9e000]         BOOTMEM
  #122 [0005ba0000 - 0005bbe000]         BOOTMEM
  #123 [0005bc0000 - 0005bde000]         BOOTMEM
  #124 [0005be0000 - 0005bfe000]         BOOTMEM
  #125 [00030fd040 - 00030fd048]         BOOTMEM
  #126 [00030fd080 - 00030fd088]         BOOTMEM
  #127 [00030fd0c0 - 00030fd1c0]         BOOTMEM
  #128 [00030fd1c0 - 00030fd3c0]         BOOTMEM
  #129 [00030fd3c0 - 00030fd4d0]         BOOTMEM
  #130 [00030fd500 - 00030fd548]         BOOTMEM
  #131 [00030fd580 - 00030fd5c8]         BOOTMEM
  #132 [00030fb040 - 00030fb240]         BOOTMEM
  #133 [00030fb240 - 00030fb440]         BOOTMEM
  #134 [00030fb440 - 00030fb640]         BOOTMEM
  #135 [00030fb640 - 00030fb840]         BOOTMEM
  #136 [00030fb840 - 00030fba40]         BOOTMEM
  #137 [00030fba40 - 00030fbc40]         BOOTMEM
  #138 [00030fbc40 - 00030fbe40]         BOOTMEM
  #139 [00030fbe40 - 00030fc040]         BOOTMEM
  #140 [00030fc040 - 00030fd040]         BOOTMEM
Memory: 94968k/180204k available (4766k kernel code, 49156k absent, 36080k reserved, 7642k data, 1448k init)
Hierarchical RCU implementation.
	RCU-based detection of stalled CPUs is disabled.
	Verbose stalled-CPUs detection is disabled.
NR_IRQS:262400 nr_irqs:2008
Extended CMOS year: 2000
Spurious LAPIC timer interrupt on cpu 0
Console: colour VGA+ 80x25
console [ttyS0] enabled
Fast TSC calibration using PIT
Detected 1994.798 MHz processor.
Calibrating delay loop (skipped), value calculated using timer frequency.. 3989.59 BogoMIPS (lpj=1994798)
pid_max: default: 65536 minimum: 512
Security Framework initialized
SELinux:  Initializing.
Dentry cache hash table entries: 16384 (order: 5, 131072 bytes)
Inode-cache hash table entries: 8192 (order: 4, 65536 bytes)
Mount-cache hash table entries: 256
Initializing cgroup subsys ns
Initializing cgroup subsys cpuacct
Initializing cgroup subsys memory
Initializing cgroup subsys devices
Initializing cgroup subsys freezer
Initializing cgroup subsys net_cls
Initializing cgroup subsys blkio
CPU: Physical Processor ID: 3
CPU: Processor Core ID: 0
mce: CPU supports 22 MCE banks
using mwait in idle threads.
Performance Events: PEBS fmt1+, Nehalem events, Intel PMU driver.
... version:                3
... bit width:              48
... generic registers:      4
... value mask:             0000ffffffffffff
... max period:             000000007fffffff
... fixed-purpose events:   3
... event mask:             000000070000000f
SMP alternatives: switching to UP code
ACPI: Core revision 20100702
ftrace: converting mcount calls to 0f 1f 44 00 00
ftrace: allocating 18514 entries in 73 pages
DMAR: Host address width 48
DMAR: DRHD base: 0x000000fd800000 flags: 0x0
IOMMU 0: reg_base_addr fd800000 ver 1:0 cap c90780106f0462 ecap f020fe
DMAR: DRHD base: 0x000000fd000000 flags: 0x1
IOMMU 1: reg_base_addr fd000000 ver 1:0 cap c90780106f0462 ecap f020fe
DMAR: RMRR base: 0x0000007be29000 end: 0x0000007be2bfff
DMAR: RMRR base: 0x0000007be16000 end: 0x0000007be16fff
DMAR: RMRR base: 0x0000007be13000 end: 0x0000007be13fff
DMAR: RMRR base: 0x0000007be10000 end: 0x0000007be10fff
DMAR: RMRR base: 0x0000007be0d000 end: 0x0000007be0dfff
DMAR: RMRR base: 0x0000007be0a000 end: 0x0000007be0afff
DMAR: RMRR base: 0x0000007be07000 end: 0x0000007be07fff
DMAR: RMRR base: 0x0000007be04000 end: 0x0000007be04fff
DMAR: RMRR base: 0x0000007be01000 end: 0x0000007be01fff
DMAR: ATSR flags: 0x0
DMAR: ATSR flags: 0x0
DMAR: RHSA base: 0x000000fd000000 proximity domain: 0x0
DMAR: RHSA base: 0x000000fd800000 proximity domain: 0x2
IOAPIC id 10 under DRHD base  0xfd800000 IOMMU 0
IOAPIC id 8 under DRHD base  0xfd000000 IOMMU 1
IOAPIC id 9 under DRHD base  0xfd000000 IOMMU 1
Enabled Interrupt-remapping
Setting APIC routing to cluster x2apic
..TIMER: vector=0x30 apic1=0 pin1=2 apic2=-1 pin2=-1
CPU0: Intel(R) Xeon(R) CPU           X7550  @ 2.00GHz stepping 06
Brought up 1 CPUs
Total of 1 processors activated (3989.59 BogoMIPS).
devtmpfs: initialized
regulator: core version 0.5
NET: Registered protocol family 16
ACPI FADT declares the system doesn't support PCIe ASPM, so disable it
ACPI: bus type pci registered
PCI: MMCONFIG for domain 0000 [bus 00-ff] at [mem 0x80000000-0x8fffffff] (base 0x80000000)
PCI: MMCONFIG at [mem 0x80000000-0x8fffffff] reserved in E820
PCI: Using configuration type 1 for base access
bio: create slab <bio-0> at 0