[PCI] BUG: unable to handle kernel paging request at fffffffffffffff8

From: Fengguang Wu
Date: Thu Apr 30 2015 - 01:05:34 EST

Greetings,

0day kernel testing robot got the below dmesg and the first bad commit is

https://github.com/YijingWang/linux-pci.git enumer11

commit 3e13c9fbd94599113876de94efbae2b36ea8f335
Author: Yijing Wang <wangyijing@xxxxxxxxxx>
AuthorDate: Tue Apr 28 11:52:30 2015 +0800
Commit: Yijing Wang <wangyijing@xxxxxxxxxx>
CommitDate: Tue Apr 28 12:32:26 2015 +0800

PCI: Remove platform specific pci_domain_nr()

Now pci_host_bridge holds the domain number,
so we could eliminate all platform specific
pci_domain_nr().

Signed-off-by: Yijing Wang <wangyijing@xxxxxxxxxx>

+---------------------------------------------------------+------------+------------+------------+
| | dbb228bb60 | 3e13c9fbd9 | 3e13c9fbd9 |
+---------------------------------------------------------+------------+------------+------------+
| boot_successes | 0 | 0 | 0 |
| boot_failures | 81 | 11 | 11 |
| PM:Hibernation_image_not_present_or_could_not_be_loaded | 81 | | |
| Unexpected_close,not_stopping_watchdog | 3 | | |
| Out_of_memory:Kill_process | 1 | | |
| BUG:unable_to_handle_kernel | 0 | 11 | 11 |
| Oops | 0 | 11 | 11 |
| RIP:pci_domain_nr | 0 | 11 | 11 |
| Kernel_panic-not_syncing:Fatal_exception | 0 | 11 | 11 |
| backtrace:acpi_bus_scan | 0 | 11 | 11 |
| backtrace:acpi_scan_init | 0 | 11 | 11 |
| backtrace:acpi_init | 0 | 11 | 11 |
| backtrace:kernel_init_freeable | 0 | 11 | 11 |
+---------------------------------------------------------+------------+------------+------------+

[ 0.876061] acpi PNP0A03:00: _OSC: OS supports [ASPM ClockPM Segments MSI]
[ 0.877938] acpi PNP0A03:00: _OSC failed (AE_NOT_FOUND); disabling ASPM
[ 0.880084] acpi PNP0A03:00: fail to add MMCONFIG information, can't access extended PCI configuration space under this bridge.
[ 0.884016] BUG: unable to handle kernel paging request at fffffffffffffff8
[ 0.886242] IP: [<ffffffff814e80c1>] pci_domain_nr+0xf/0x12
[ 0.888000] PGD 220c067 PUD 220e067 PMD 0
[ 0.888000] Oops: 0000 [#1] SMP
[ 0.888000] Modules linked in:
[ 0.888000] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.1.0-rc1-00012-g3e13c9f #18
[ 0.888000] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.7.5-20140531_083030-gandalf 04/01/2014
[ 0.888000] task: ffff880010db8000 ti: ffff880010de0000 task.ti: ffff880010de0000
[ 0.888000] RIP: 0010:[<ffffffff814e80c1>] [<ffffffff814e80c1>] pci_domain_nr+0xf/0x12
[ 0.888000] RSP: 0000:ffff880010de3b70 EFLAGS: 00010293
[ 0.888000] RAX: fffffffffffffff8 RBX: ffff88000fd34400 RCX: 0000000000000000
[ 0.888000] RDX: ffff88000fd34470 RSI: ffff880010db8000 RDI: ffff88000fd34400
[ 0.888000] RBP: ffff880010de3c08 R08: ffff88000f841b58 R09: 000000000000b500
[ 0.888000] R10: 0000000000000001 R11: 000000000000bbaa R12: ffffffff8233efd0
[ 0.888000] R13: 0000000000000000 R14: 0000000000000000 R15: ffff880010de3c48
[ 0.888000] FS: 0000000000000000(0000) GS:ffff880011200000(0000) knlGS:0000000000000000
[ 0.888000] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[ 0.888000] CR2: fffffffffffffff8 CR3: 000000000220b000 CR4: 00000000000006f0
[ 0.888000] Stack:
[ 0.888000] ffffffff814e5bd1 ffff880010de3c58 ffff880010c17258 ffff88000f841b58
[ 0.888000] 00000000ffffffff ffff880010de3c08 ffffffff81572e4c ffff880010de3bc8
[ 0.888000] ffffffff81f9cd14 ffff880010de3bc0 ffffffff00000010 ffff880010de3c18
[ 0.888000] Call Trace:
[ 0.888000] [<ffffffff814e5bd1>] ? pci_create_root_bus+0x6b/0x389
[ 0.888000] [<ffffffff81572e4c>] ? dev_warn+0x53/0x55
[ 0.888000] [<ffffffff818e865b>] pci_acpi_scan_root+0x4e0/0x53f
[ 0.888000] [<ffffffff81511114>] acpi_pci_root_add+0x394/0x46c
[ 0.888000] [<ffffffff815098e9>] ? acpi_bus_get_status_handle+0x1f/0x3b
[ 0.888000] [<ffffffff8150cb40>] acpi_bus_attach+0xd4/0x173
[ 0.888000] [<ffffffff8150cb9a>] acpi_bus_attach+0x12e/0x173
[ 0.888000] [<ffffffff815762a5>] ? device_attach+0x8d/0x98
[ 0.888000] [<ffffffff8150cb9a>] acpi_bus_attach+0x12e/0x173
[ 0.888000] [<ffffffff8150ccf9>] acpi_bus_scan+0x61/0x6c
[ 0.888000] [<ffffffff82405ed5>] ? acpi_sleep_proc_init+0x2a/0x2a
[ 0.888000] [<ffffffff82406307>] acpi_scan_init+0x7c/0x1b2
[ 0.888000] [<ffffffff82405ed5>] ? acpi_sleep_proc_init+0x2a/0x2a
[ 0.888000] [<ffffffff82405ed5>] ? acpi_sleep_proc_init+0x2a/0x2a
[ 0.888000] [<ffffffff8240612e>] acpi_init+0x259/0x276
[ 0.888000] [<ffffffff82405ed5>] ? acpi_sleep_proc_init+0x2a/0x2a
[ 0.888000] [<ffffffff8100032a>] do_one_initcall+0xfd/0x18f
[ 0.888000] [<ffffffff823be0eb>] kernel_init_freeable+0x1b7/0x23f
[ 0.888000] [<ffffffff81a27a45>] ? rest_init+0x8c/0x8c
[ 0.888000] [<ffffffff81a27a53>] kernel_init+0xe/0xdf
[ 0.888000] [<ffffffff81a38882>] ret_from_fork+0x42/0x70
[ 0.888000] [<ffffffff81a27a45>] ? rest_init+0x8c/0x8c
[ 0.888000] Code: d8 5b 41 5c 5d c3 0f 1f 44 00 00 55 48 89 f7 48 89 d6 48 89 e5 e8 91 ff ff ff 5d c3 0f 1f 44 00 00 55 48 89 e5 e8 63 e7 ff ff 5d <8b> 00 c3 0f 1f 44 00 00 31 c0 81 bf 28 03 00 00 00 01 00 00 0f
[ 0.888000] RIP [<ffffffff814e80c1>] pci_domain_nr+0xf/0x12
[ 0.888000] RSP <ffff880010de3b70>
[ 0.888000] CR2: fffffffffffffff8
[ 0.888000] ---[ end trace eac89ddbfb4c36c7 ]---
[ 0.888000] Kernel panic - not syncing: Fatal exception

git bisect start 3e13c9fbd94599113876de94efbae2b36ea8f335 b787f68c36d49bb1d9236f403813641efa74a031 --
git bisect good a997927183cfd69fd3da8ab60475685544e5303a # 22:50 20+ 22 PCI: Remove deprecated pci_scan_bus_parented()
git bisect good dbececfc2535f46ec98ad4559756cfb63baa0957 # 22:56 20+ 24 PCI: Introduce pci_host_assign_domain_nr() to assign domain
git bisect good 128c719d41c556165e6f6921187c8b327d8e927b # 22:59 20+ 19 PCI: Remove declaration for pci_get_new_domain_nr()
git bisect good dbb228bb60e4407f4d5c9afd297e5689754809e2 # 23:12 20+ 21 PCI: Remove pci_bus_assign_domain_nr()
# first bad commit: [3e13c9fbd94599113876de94efbae2b36ea8f335] PCI: Remove platform specific pci_domain_nr()
git bisect good dbb228bb60e4407f4d5c9afd297e5689754809e2 # 23:18 60+ 81 PCI: Remove pci_bus_assign_domain_nr()
# extra tests with DEBUG_INFO
git bisect bad 3e13c9fbd94599113876de94efbae2b36ea8f335 # 23:22 0- 22 PCI: Remove platform specific pci_domain_nr()
# extra tests on HEAD of yijingwang-pci/enumer11
git bisect good 510ffebb71db123382b4efb2a62601360387bb4c # 23:27 60+ 56 PCI: Rename __pci_create_root_bus() to pci_create_root_bus()
# extra tests on tree/branch yijingwang-pci/enumer11
git bisect good 510ffebb71db123382b4efb2a62601360387bb4c # 23:35 60+ 116 PCI: Rename __pci_create_root_bus() to pci_create_root_bus()
# extra tests on tree/branch linus/master
git bisect good 3d99e3fe13d473ac4578c37f477a59b829530764 # 23:43 60+ 58 Merge branch 'stable' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile
# extra tests on tree/branch next/master
git bisect good 6b1330a4f1b25f474aa2b9bcaf941e26abfe30af # 23:50 60+ 80 Add linux-next specific files for 20150429


This script may reproduce the error.

----------------------------------------------------------------------------
#!/bin/bash

kernel=$1

kvm=(
qemu-system-x86_64
-enable-kvm
-cpu kvm64
-kernel $kernel
-m 300
-smp 2
-device e1000,netdev=net0
-netdev user,id=net0
-boot order=nc
-no-reboot
-watchdog i6300esb
-rtc base=localtime
-serial stdio
-display none
-monitor null
)

append=(
hung_task_panic=1
earlyprintk=ttyS0,115200
rd.udev.log-priority=err
systemd.log_target=journal
systemd.log_level=warning
debug
apic=debug
sysrq_always_enabled
rcupdate.rcu_cpu_stall_timeout=100
panic=-1
softlockup_panic=1
nmi_watchdog=panic
oops=panic
load_ramdisk=2
prompt_ramdisk=0
console=ttyS0,115200
console=tty0
vga=normal
root=/dev/ram0
rw
drbd.minor_count=8
)

"${kvm[@]}" --append "${append[*]}"
----------------------------------------------------------------------------

Thanks,
Fengguang
early console in setup code
Probing EDD (edd=off to disable)... ok
early console in decompress_kernel

Decompressing Linux... Parsing ELF... done.
Booting the kernel.
[ 0.000000] Initializing cgroup subsys cpuset
[ 0.000000] Initializing cgroup subsys cpu
[ 0.000000] Linux version 4.1.0-rc1-00012-g3e13c9f (kbuild@roam) (gcc version 4.9.2 (Debian 4.9.2-10) ) #18 SMP Tue Apr 28 13:29:43 CST 2015
[ 0.000000] Command line: hung_task_panic=1 earlyprintk=ttyS0,115200 rd.udev.log-priority=err systemd.log_target=journal systemd.log_level=warning debug apic=debug sysrq_always_enabled rcupdate.rcu_cpu_stall_timeout=100 panic=-1 softlockup_panic=1 nmi_watchdog=panic oops=panic load_ramdisk=2 prompt_ramdisk=0 console=ttyS0,115200 console=tty0 vga=normal root=/dev/ram0 rw link=/kbuild-tests/run-queue/kvm/x86_64-lkp/yijingwang-pci:enumer11:3e13c9fbd94599113876de94efbae2b36ea8f335:bisect-linux-9/.vmlinuz-3e13c9fbd94599113876de94efbae2b36ea8f335-20150429223647-9-ivb42 branch=yijingwang-pci/enumer11 BOOT_IMAGE=/kernel/x86_64-lkp/3e13c9fbd94599113876de94efbae2b36ea8f335/vmlinuz-4.1.0-rc1-00012-g3e13c9f drbd.minor_count=8
[ 0.000000] e820: BIOS-provided physical RAM map:
[ 0.000000] BIOS-e820: [mem 0x0000000000000000-0x000000000009fbff] usable
[ 0.000000] BIOS-e820: [mem 0x000000000009fc00-0x000000000009ffff] reserved
[ 0.000000] BIOS-e820: [mem 0x00000000000f0000-0x00000000000fffff] reserved
[ 0.000000] BIOS-e820: [mem 0x0000000000100000-0x0000000012bdffff] usable
[ 0.000000] BIOS-e820: [mem 0x0000000012be0000-0x0000000012bfffff] reserved
[ 0.000000] BIOS-e820: [mem 0x00000000feffc000-0x00000000feffffff] reserved
[ 0.000000] BIOS-e820: [mem 0x00000000fffc0000-0x00000000ffffffff] reserved
[ 0.000000] bootconsole [earlyser0] enabled
[ 0.000000] earlycon: no match for ttyS0,115200
[ 0.000000] earlycon: no match for tty0
[ 0.000000] NX (Execute Disable) protection: active
[ 0.000000] SMBIOS 2.8 present.
[ 0.000000] DMI: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.7.5-20140531_083030-gandalf 04/01/2014
[ 0.000000] Hypervisor detected: KVM
[ 0.000000] e820: update [mem 0x00000000-0x00000fff] usable ==> reserved
[ 0.000000] e820: remove [mem 0x000a0000-0x000fffff] usable
[ 0.000000] AGP: No AGP bridge found
[ 0.000000] e820: last_pfn = 0x12be0 max_arch_pfn = 0x400000000
[ 0.000000] MTRR default type: write-back
[ 0.000000] MTRR fixed ranges enabled:
[ 0.000000] 00000-9FFFF write-back
[ 0.000000] A0000-BFFFF uncachable
[ 0.000000] C0000-FFFFF write-protect
[ 0.000000] MTRR variable ranges enabled:
[ 0.000000] 0 base 0080000000 mask FF80000000 uncachable
[ 0.000000] 1 disabled
[ 0.000000] 2 disabled
[ 0.000000] 3 disabled
[ 0.000000] 4 disabled
[ 0.000000] 5 disabled
[ 0.000000] 6 disabled
[ 0.000000] 7 disabled
[ 0.000000] PAT configuration [0-7]: WB WC UC- UC WB WC UC- UC
[ 0.000000] Scan for SMP in [mem 0x00000000-0x000003ff]
[ 0.000000] Scan for SMP in [mem 0x0009fc00-0x0009ffff]
[ 0.000000] Scan for SMP in [mem 0x000f0000-0x000fffff]
[ 0.000000] found SMP MP-table at [mem 0x000f0e80-0x000f0e8f] mapped at [ffff8800000f0e80]
[ 0.000000] mpc: f0e90-f0fac
[ 0.000000] Scanning 1 areas for low memory corruption
[ 0.000000] Base memory trampoline at [ffff880000099000] 99000 size 24576
[ 0.000000] init_memory_mapping: [mem 0x00000000-0x000fffff]
[ 0.000000] [mem 0x00000000-0x000fffff] page 4k
[ 0.000000] BRK [0x026b8000, 0x026b8fff] PGTABLE
[ 0.000000] BRK [0x026b9000, 0x026b9fff] PGTABLE
[ 0.000000] BRK [0x026ba000, 0x026bafff] PGTABLE
[ 0.000000] init_memory_mapping: [mem 0x11200000-0x113fffff]
[ 0.000000] [mem 0x11200000-0x113fffff] page 2M
[ 0.000000] init_memory_mapping: [mem 0x00100000-0x111fffff]
[ 0.000000] [mem 0x00100000-0x001fffff] page 4k
[ 0.000000] [mem 0x00200000-0x111fffff] page 2M
[ 0.000000] init_memory_mapping: [mem 0x11400000-0x12bdffff]
[ 0.000000] [mem 0x11400000-0x129fffff] page 2M
[ 0.000000] [mem 0x12a00000-0x12bdffff] page 4k
[ 0.000000] BRK [0x026bb000, 0x026bbfff] PGTABLE
[ 0.000000] RAMDISK: [mem 0x11525000-0x12bd7fff]
[ 0.000000] ACPI: Early table checksum verification disabled
[ 0.000000] ACPI: RSDP 0x00000000000F0C60 000014 (v00 BOCHS )
[ 0.000000] ACPI: RSDT 0x0000000012BE18BD 000034 (v01 BOCHS BXPCRSDT 00000001 BXPC 00000001)
[ 0.000000] ACPI: FACP 0x0000000012BE0B37 000074 (v01 BOCHS BXPCFACP 00000001 BXPC 00000001)
[ 0.000000] ACPI: DSDT 0x0000000012BE0040 000AF7 (v01 BOCHS BXPCDSDT 00000001 BXPC 00000001)
[ 0.000000] ACPI: FACS 0x0000000012BE0000 000040
[ 0.000000] ACPI: SSDT 0x0000000012BE0BAB 000C5A (v01 BOCHS BXPCSSDT 00000001 BXPC 00000001)
[ 0.000000] ACPI: APIC 0x0000000012BE1805 000080 (v01 BOCHS BXPCAPIC 00000001 BXPC 00000001)
[ 0.000000] ACPI: HPET 0x0000000012BE1885 000038 (v01 BOCHS BXPCHPET 00000001 BXPC 00000001)
[ 0.000000] ACPI: Local APIC address 0xfee00000
[ 0.000000] mapped APIC to ffffffffff5f5000 ( fee00000)
[ 0.000000] No NUMA configuration found
[ 0.000000] Faking a node at [mem 0x0000000000000000-0x0000000012bdffff]
[ 0.000000] NODE_DATA(0) allocated [mem 0x12bdc000-0x12bdffff]
[ 0.000000] kvm-clock: Using msrs 4b564d01 and 4b564d00
[ 0.000000] kvm-clock: cpu 0, msr 0:1151d001, primary cpu clock
[ 0.000000] clocksource kvm-clock: mask: 0xffffffffffffffff max_cycles: 0x1cd42e4dffb, max_idle_ns: 881590591483 ns
[ 0.000000] [ffffea0000000000-ffffea00005fffff] PMD -> [ffff880010600000-ffff880010bfffff] on node 0
[ 0.000000] Zone ranges:
[ 0.000000] DMA [mem 0x0000000000001000-0x0000000000ffffff]
[ 0.000000] DMA32 [mem 0x0000000001000000-0x0000000012bdffff]
[ 0.000000] Normal empty
[ 0.000000] Movable zone start for each node
[ 0.000000] Early memory node ranges
[ 0.000000] node 0: [mem 0x0000000000001000-0x000000000009efff]
[ 0.000000] node 0: [mem 0x0000000000100000-0x0000000012bdffff]
[ 0.000000] Initmem setup node 0 [mem 0x0000000000001000-0x0000000012bdffff]
[ 0.000000] On node 0 totalpages: 76670
[ 0.000000] DMA zone: 64 pages used for memmap
[ 0.000000] DMA zone: 21 pages reserved
[ 0.000000] DMA zone: 3998 pages, LIFO batch:0
[ 0.000000] DMA32 zone: 1136 pages used for memmap
[ 0.000000] DMA32 zone: 72672 pages, LIFO batch:15
[ 0.000000] ACPI: PM-Timer IO Port: 0x608
[ 0.000000] ACPI: Local APIC address 0xfee00000
[ 0.000000] mapped APIC to ffffffffff5f5000 ( fee00000)
[ 0.000000] ACPI: LAPIC_NMI (acpi_id[0xff] dfl dfl lint[0x1])
[ 0.000000] IOAPIC[0]: apic_id 0, version 17, address 0xfec00000, GSI 0-23
[ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
[ 0.000000] Int: type 0, pol 0, trig 0, bus 00, IRQ 00, APIC ID 0, APIC INT 02
[ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 5 global_irq 5 high level)
[ 0.000000] Int: type 0, pol 1, trig 3, bus 00, IRQ 05, APIC ID 0, APIC INT 05
[ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
[ 0.000000] Int: type 0, pol 1, trig 3, bus 00, IRQ 09, APIC ID 0, APIC INT 09
[ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 10 global_irq 10 high level)
[ 0.000000] Int: type 0, pol 1, trig 3, bus 00, IRQ 0a, APIC ID 0, APIC INT 0a
[ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 11 global_irq 11 high level)
[ 0.000000] Int: type 0, pol 1, trig 3, bus 00, IRQ 0b, APIC ID 0, APIC INT 0b
[ 0.000000] ACPI: IRQ0 used by override.
[ 0.000000] Int: type 0, pol 0, trig 0, bus 00, IRQ 01, APIC ID 0, APIC INT 01
[ 0.000000] Int: type 0, pol 0, trig 0, bus 00, IRQ 03, APIC ID 0, APIC INT 03
[ 0.000000] Int: type 0, pol 0, trig 0, bus 00, IRQ 04, APIC ID 0, APIC INT 04
[ 0.000000] ACPI: IRQ5 used by override.
[ 0.000000] Int: type 0, pol 0, trig 0, bus 00, IRQ 06, APIC ID 0, APIC INT 06
[ 0.000000] Int: type 0, pol 0, trig 0, bus 00, IRQ 07, APIC ID 0, APIC INT 07
[ 0.000000] Int: type 0, pol 0, trig 0, bus 00, IRQ 08, APIC ID 0, APIC INT 08
[ 0.000000] ACPI: IRQ9 used by override.
[ 0.000000] ACPI: IRQ10 used by override.
[ 0.000000] ACPI: IRQ11 used by override.
[ 0.000000] Int: type 0, pol 0, trig 0, bus 00, IRQ 0c, APIC ID 0, APIC INT 0c
[ 0.000000] Int: type 0, pol 0, trig 0, bus 00, IRQ 0d, APIC ID 0, APIC INT 0d
[ 0.000000] Int: type 0, pol 0, trig 0, bus 00, IRQ 0e, APIC ID 0, APIC INT 0e
[ 0.000000] Int: type 0, pol 0, trig 0, bus 00, IRQ 0f, APIC ID 0, APIC INT 0f
[ 0.000000] Using ACPI (MADT) for SMP configuration information
[ 0.000000] ACPI: HPET id: 0x8086a201 base: 0xfed00000
[ 0.000000] smpboot: Allowing 2 CPUs, 0 hotplug CPUs
[ 0.000000] mapped IOAPIC to ffffffffff5f4000 (fec00000)
[ 0.000000] PM: Registered nosave memory: [mem 0x00000000-0x00000fff]
[ 0.000000] PM: Registered nosave memory: [mem 0x0009f000-0x0009ffff]
[ 0.000000] PM: Registered nosave memory: [mem 0x000a0000-0x000effff]
[ 0.000000] PM: Registered nosave memory: [mem 0x000f0000-0x000fffff]
[ 0.000000] e820: [mem 0x12c00000-0xfeffbfff] available for PCI devices
[ 0.000000] Booting paravirtualized kernel on KVM
[ 0.000000] clocksource refined-jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645519600211568 ns
[ 0.000000] setup_percpu: NR_CPUS:512 nr_cpumask_bits:512 nr_cpu_ids:2 nr_node_ids:1
[ 0.000000] PERCPU: Embedded 33 pages/cpu @ffff880011200000 s95064 r8192 d31912 u1048576
[ 0.000000] pcpu-alloc: s95064 r8192 d31912 u1048576 alloc=1*2097152
[ 0.000000] pcpu-alloc: [0] 0 1
[ 0.000000] KVM setup async PF for cpu 0
[ 0.000000] kvm-stealtime: cpu 0, msr 1120d380
[ 0.000000] Built 1 zonelists in Node order, mobility grouping on. Total pages: 75449
[ 0.000000] Policy zone: DMA32
[ 0.000000] Kernel command line: hung_task_panic=1 earlyprintk=ttyS0,115200 rd.udev.log-priority=err systemd.log_target=journal systemd.log_level=warning debug apic=debug sysrq_always_enabled rcupdate.rcu_cpu_stall_timeout=100 panic=-1 softlockup_panic=1 nmi_watchdog=panic oops=panic load_ramdisk=2 prompt_ramdisk=0 console=ttyS0,115200 console=tty0 vga=normal root=/dev/ram0 rw link=/kbuild-tests/run-queue/kvm/x86_64-lkp/yijingwang-pci:enumer11:3e13c9fbd94599113876de94efbae2b36ea8f335:bisect-linux-9/.vmlinuz-3e13c9fbd94599113876de94efbae2b36ea8f335-20150429223647-9-ivb42 branch=yijingwang-pci/enumer11 BOOT_IMAGE=/kernel/x86_64-lkp/3e13c9fbd94599113876de94efbae2b36ea8f335/vmlinuz-4.1.0-rc1-00012-g3e13c9f drbd.minor_count=8
[ 0.000000] sysrq: sysrq always enabled.
[ 0.000000] PID hash table entries: 2048 (order: 2, 16384 bytes)
[ 0.000000] AGP: Checking aperture...
[ 0.000000] AGP: No AGP bridge found
[ 0.000000] Memory: 253376K/306680K available (10489K kernel code, 1679K rwdata, 4220K rodata, 1492K init, 1608K bss, 53304K reserved, 0K cma-reserved)
[ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=1
[ 0.000000] Hierarchical RCU implementation.
[ 0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2
[ 0.000000] NR_IRQS:33024 nr_irqs:440 16
[ 0.000000] Console: colour VGA+ 80x25
[ 0.000000] console [tty0] enabled
[ 0.000000] bootconsole [earlyser0] disabled
[ 0.000000] Initializing cgroup subsys cpuset
[ 0.000000] Initializing cgroup subsys cpu
[ 0.000000] Linux version 4.1.0-rc1-00012-g3e13c9f (kbuild@roam) (gcc version 4.9.2 (Debian 4.9.2-10) ) #18 SMP Tue Apr 28 13:29:43 CST 2015
[ 0.000000] Command line: hung_task_panic=1 earlyprintk=ttyS0,115200 rd.udev.log-priority=err systemd.log_target=journal systemd.log_level=warning debug apic=debug sysrq_always_enabled rcupdate.rcu_cpu_stall_timeout=100 panic=-1 softlockup_panic=1 nmi_watchdog=panic oops=panic load_ramdisk=2 prompt_ramdisk=0 console=ttyS0,115200 console=tty0 vga=normal root=/dev/ram0 rw link=/kbuild-tests/run-queue/kvm/x86_64-lkp/yijingwang-pci:enumer11:3e13c9fbd94599113876de94efbae2b36ea8f335:bisect-linux-9/.vmlinuz-3e13c9fbd94599113876de94efbae2b36ea8f335-20150429223647-9-ivb42 branch=yijingwang-pci/enumer11 BOOT_IMAGE=/kernel/x86_64-lkp/3e13c9fbd94599113876de94efbae2b36ea8f335/vmlinuz-4.1.0-rc1-00012-g3e13c9f drbd.minor_count=8
[ 0.000000] e820: BIOS-provided physical RAM map:
[ 0.000000] BIOS-e820: [mem 0x0000000000000000-0x000000000009fbff] usable
[ 0.000000] BIOS-e820: [mem 0x000000000009fc00-0x000000000009ffff] reserved
[ 0.000000] BIOS-e820: [mem 0x00000000000f0000-0x00000000000fffff] reserved
[ 0.000000] BIOS-e820: [mem 0x0000000000100000-0x0000000012bdffff] usable
[ 0.000000] BIOS-e820: [mem 0x0000000012be0000-0x0000000012bfffff] reserved
[ 0.000000] BIOS-e820: [mem 0x00000000feffc000-0x00000000feffffff] reserved
[ 0.000000] BIOS-e820: [mem 0x00000000fffc0000-0x00000000ffffffff] reserved
[ 0.000000] bootconsole [earlyser0] enabled
[ 0.000000] earlycon: no match for ttyS0,115200
[ 0.000000] earlycon: no match for tty0
[ 0.000000] NX (Execute Disable) protection: active
[ 0.000000] SMBIOS 2.8 present.
[ 0.000000] DMI: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.7.5-20140531_083030-gandalf 04/01/2014
[ 0.000000] Hypervisor detected: KVM
[ 0.000000] e820: update [mem 0x00000000-0x00000fff] usable ==> reserved
[ 0.000000] e820: remove [mem 0x000a0000-0x000fffff] usable
[ 0.000000] AGP: No AGP bridge found
[ 0.000000] e820: last_pfn = 0x12be0 max_arch_pfn = 0x400000000
[ 0.000000] MTRR default type: write-back
[ 0.000000] MTRR fixed ranges enabled:
[ 0.000000] 00000-9FFFF write-back
[ 0.000000] A0000-BFFFF uncachable
[ 0.000000] C0000-FFFFF write-protect
[ 0.000000] MTRR variable ranges enabled:
[ 0.000000] 0 base 0080000000 mask FF80000000 uncachable
[ 0.000000] 1 disabled
[ 0.000000] 2 disabled
[ 0.000000] 3 disabled
[ 0.000000] 4 disabled
[ 0.000000] 5 disabled
[ 0.000000] 6 disabled
[ 0.000000] 7 disabled
[ 0.000000] PAT configuration [0-7]: WB WC UC- UC WB WC UC- UC
[ 0.000000] Scan for SMP in [mem 0x00000000-0x000003ff]
[ 0.000000] Scan for SMP in [mem 0x0009fc00-0x0009ffff]
[ 0.000000] Scan for SMP in [mem 0x000f0000-0x000fffff]
[ 0.000000] found SMP MP-table at [mem 0x000f0e80-0x000f0e8f] mapped at [ffff8800000f0e80]
[ 0.000000] mpc: f0e90-f0fac
[ 0.000000] Scanning 1 areas for low memory corruption
[ 0.000000] Base memory trampoline at [ffff880000099000] 99000 size 24576
[ 0.000000] init_memory_mapping: [mem 0x00000000-0x000fffff]
[ 0.000000] [mem 0x00000000-0x000fffff] page 4k
[ 0.000000] BRK [0x026b8000, 0x026b8fff] PGTABLE
[ 0.000000] BRK [0x026b9000, 0x026b9fff] PGTABLE
[ 0.000000] BRK [0x026ba000, 0x026bafff] PGTABLE
[ 0.000000] init_memory_mapping: [mem 0x11200000-0x113fffff]
[ 0.000000] [mem 0x11200000-0x113fffff] page 2M
[ 0.000000] init_memory_mapping: [mem 0x00100000-0x111fffff]
[ 0.000000] [mem 0x00100000-0x001fffff] page 4k
[ 0.000000] [mem 0x00200000-0x111fffff] page 2M
[ 0.000000] init_memory_mapping: [mem 0x11400000-0x12bdffff]
[ 0.000000] [mem 0x11400000-0x129fffff] page 2M
[ 0.000000] [mem 0x12a00000-0x12bdffff] page 4k
[ 0.000000] BRK [0x026bb000, 0x026bbfff] PGTABLE
[ 0.000000] RAMDISK: [mem 0x11525000-0x12bd7fff]
[ 0.000000] ACPI: Early table checksum verification disabled
[ 0.000000] ACPI: RSDP 0x00000000000F0C60 000014 (v00 BOCHS )
[ 0.000000] ACPI: RSDT 0x0000000012BE18BD 000034 (v01 BOCHS BXPCRSDT 00000001 BXPC 00000001)
[ 0.000000] ACPI: FACP 0x0000000012BE0B37 000074 (v01 BOCHS BXPCFACP 00000001 BXPC 00000001)
[ 0.000000] ACPI: DSDT 0x0000000012BE0040 000AF7 (v01 BOCHS BXPCDSDT 00000001 BXPC 00000001)
[ 0.000000] ACPI: FACS 0x0000000012BE0000 000040
[ 0.000000] ACPI: SSDT 0x0000000012BE0BAB 000C5A (v01 BOCHS BXPCSSDT 00000001 BXPC 00000001)
[ 0.000000] ACPI: APIC 0x0000000012BE1805 000080 (v01 BOCHS BXPCAPIC 00000001 BXPC 00000001)
[ 0.000000] ACPI: HPET 0x0000000012BE1885 000038 (v01 BOCHS BXPCHPET 00000001 BXPC 00000001)
[ 0.000000] ACPI: Local APIC address 0xfee00000
[ 0.000000] mapped APIC to ffffffffff5f5000 ( fee00000)
[ 0.000000] No NUMA configuration found
[ 0.000000] Faking a node at [mem 0x0000000000000000-0x0000000012bdffff]
[ 0.000000] NODE_DATA(0) allocated [mem 0x12bdc000-0x12bdffff]
[ 0.000000] kvm-clock: Using msrs 4b564d01 and 4b564d00
[ 0.000000] kvm-clock: cpu 0, msr 0:1151d001, primary cpu clock
[ 0.000000] clocksource kvm-clock: mask: 0xffffffffffffffff max_cycles: 0x1cd42e4dffb, max_idle_ns: 881590591483 ns
[ 0.000000] [ffffea0000000000-ffffea00005fffff] PMD -> [ffff880010600000-ffff880010bfffff] on node 0
[ 0.000000] Zone ranges:
[ 0.000000] DMA [mem 0x0000000000001000-0x0000000000ffffff]
[ 0.000000] DMA32 [mem 0x0000000001000000-0x0000000012bdffff]
[ 0.000000] Normal empty
[ 0.000000] Movable zone start for each node
[ 0.000000] Early memory node ranges
[ 0.000000] node 0: [mem 0x0000000000001000-0x000000000009efff]
[ 0.000000] node 0: [mem 0x0000000000100000-0x0000000012bdffff]
[ 0.000000] Initmem setup node 0 [mem 0x0000000000001000-0x0000000012bdffff]
[ 0.000000] On node 0 totalpages: 76670
[ 0.000000] DMA zone: 64 pages used for memmap
[ 0.000000] DMA zone: 21 pages reserved
[ 0.000000] DMA zone: 3998 pages, LIFO batch:0
[ 0.000000] DMA32 zone: 1136 pages used for memmap
[ 0.000000] DMA32 zone: 72672 pages, LIFO batch:15
[ 0.000000] ACPI: PM-Timer IO Port: 0x608
[ 0.000000] ACPI: Local APIC address 0xfee00000
[ 0.000000] mapped APIC to ffffffffff5f5000 ( fee00000)
[ 0.000000] ACPI: LAPIC_NMI (acpi_id[0xff] dfl dfl lint[0x1])
[ 0.000000] IOAPIC[0]: apic_id 0, version 17, address 0xfec00000, GSI 0-23
[ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
[ 0.000000] Int: type 0, pol 0, trig 0, bus 00, IRQ 00, APIC ID 0, APIC INT 02
[ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 5 global_irq 5 high level)
[ 0.000000] Int: type 0, pol 1, trig 3, bus 00, IRQ 05, APIC ID 0, APIC INT 05
[ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
[ 0.000000] Int: type 0, pol 1, trig 3, bus 00, IRQ 09, APIC ID 0, APIC INT 09
[ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 10 global_irq 10 high level)
[ 0.000000] Int: type 0, pol 1, trig 3, bus 00, IRQ 0a, APIC ID 0, APIC INT 0a
[ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 11 global_irq 11 high level)
[ 0.000000] Int: type 0, pol 1, trig 3, bus 00, IRQ 0b, APIC ID 0, APIC INT 0b
[ 0.000000] ACPI: IRQ0 used by override.
[ 0.000000] Int: type 0, pol 0, trig 0, bus 00, IRQ 01, APIC ID 0, APIC INT 01
[ 0.000000] Int: type 0, pol 0, trig 0, bus 00, IRQ 03, APIC ID 0, APIC INT 03
[ 0.000000] Int: type 0, pol 0, trig 0, bus 00, IRQ 04, APIC ID 0, APIC INT 04
[ 0.000000] ACPI: IRQ5 used by override.
[ 0.000000] Int: type 0, pol 0, trig 0, bus 00, IRQ 06, APIC ID 0, APIC INT 06
[ 0.000000] Int: type 0, pol 0, trig 0, bus 00, IRQ 07, APIC ID 0, APIC INT 07
[ 0.000000] Int: type 0, pol 0, trig 0, bus 00, IRQ 08, APIC ID 0, APIC INT 08
[ 0.000000] ACPI: IRQ9 used by override.
[ 0.000000] ACPI: IRQ10 used by override.
[ 0.000000] ACPI: IRQ11 used by override.
[ 0.000000] Int: type 0, pol 0, trig 0, bus 00, IRQ 0c, APIC ID 0, APIC INT 0c
[ 0.000000] Int: type 0, pol 0, trig 0, bus 00, IRQ 0d, APIC ID 0, APIC INT 0d
[ 0.000000] Int: type 0, pol 0, trig 0, bus 00, IRQ 0e, APIC ID 0, APIC INT 0e
[ 0.000000] Int: type 0, pol 0, trig 0, bus 00, IRQ 0f, APIC ID 0, APIC INT 0f
[ 0.000000] Using ACPI (MADT) for SMP configuration information
[ 0.000000] ACPI: HPET id: 0x8086a201 base: 0xfed00000
[ 0.000000] smpboot: Allowing 2 CPUs, 0 hotplug CPUs
[ 0.000000] mapped IOAPIC to ffffffffff5f4000 (fec00000)
[ 0.000000] PM: Registered nosave memory: [mem 0x00000000-0x00000fff]
[ 0.000000] PM: Registered nosave memory: [mem 0x0009f000-0x0009ffff]
[ 0.000000] PM: Registered nosave memory: [mem 0x000a0000-0x000effff]
[ 0.000000] PM: Registered nosave memory: [mem 0x000f0000-0x000fffff]
[ 0.000000] e820: [mem 0x12c00000-0xfeffbfff] available for PCI devices
[ 0.000000] Booting paravirtualized kernel on KVM
[ 0.000000] clocksource refined-jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645519600211568 ns
[ 0.000000] setup_percpu: NR_CPUS:512 nr_cpumask_bits:512 nr_cpu_ids:2 nr_node_ids:1
[ 0.000000] PERCPU: Embedded 33 pages/cpu @ffff880011200000 s95064 r8192 d31912 u1048576
[ 0.000000] pcpu-alloc: s95064 r8192 d31912 u1048576 alloc=1*2097152
[ 0.000000] pcpu-alloc: [0] 0 1
[ 0.000000] KVM setup async PF for cpu 0
[ 0.000000] kvm-stealtime: cpu 0, msr 1120d380
[ 0.000000] Built 1 zonelists in Node order, mobility grouping on. Total pages: 75449
[ 0.000000] Policy zone: DMA32
[ 0.000000] Kernel command line: hung_task_panic=1 earlyprintk=ttyS0,115200 rd.udev.log-priority=err systemd.log_target=journal systemd.log_level=warning debug apic=debug sysrq_always_enabled rcupdate.rcu_cpu_stall_timeout=100 panic=-1 softlockup_panic=1 nmi_watchdog=panic oops=panic load_ramdisk=2 prompt_ramdisk=0 console=ttyS0,115200 console=tty0 vga=normal root=/dev/ram0 rw link=/kbuild-tests/run-queue/kvm/x86_64-lkp/yijingwang-pci:enumer11:3e13c9fbd94599113876de94efbae2b36ea8f335:bisect-linux-9/.vmlinuz-3e13c9fbd94599113876de94efbae2b36ea8f335-20150429223647-9-ivb42 branch=yijingwang-pci/enumer11 BOOT_IMAGE=/kernel/x86_64-lkp/3e13c9fbd94599113876de94efbae2b36ea8f335/vmlinuz-4.1.0-rc1-00012-g3e13c9f drbd.minor_count=8
[ 0.000000] sysrq: sysrq always enabled.
[ 0.000000] PID hash table entries: 2048 (order: 2, 16384 bytes)
[ 0.000000] AGP: Checking aperture...
[ 0.000000] AGP: No AGP bridge found
[ 0.000000] Memory: 253376K/306680K available (10489K kernel code, 1679K rwdata, 4220K rodata, 1492K init, 1608K bss, 53304K reserved, 0K cma-reserved)
[ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=1
[ 0.000000] Hierarchical RCU implementation.
[ 0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2
[ 0.000000] NR_IRQS:33024 nr_irqs:440 16
[ 0.000000] Console: colour VGA+ 80x25
[ 0.000000] console [tty0] enabled
[ 0.000000] bootconsole [earlyser0] disabled
[ 0.000000] console [ttyS0] enabled
[ 0.000000] clocksource hpet: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604467 ns
[ 0.000000] hpet clockevent registered
[ 0.000000] tsc: Detected 2693.508 MHz processor
[ 0.008000] Calibrating delay loop (skipped) preset value.. 5387.01 BogoMIPS (lpj=10774032)
[ 0.009688] pid_max: default: 32768 minimum: 301
[ 0.012014] ACPI: Core revision 20150410
[ 0.018758] ACPI: All ACPI Tables successfully acquired
[ 0.025971] Dentry cache hash table entries: 65536 (order: 7, 524288 bytes)
[ 0.028218] Inode-cache hash table entries: 32768 (order: 6, 262144 bytes)
[ 0.036080] Mount-cache hash table entries: 1024 (order: 1, 8192 bytes)
[ 0.040010] Mountpoint-cache hash table entries: 1024 (order: 1, 8192 bytes)
[ 0.044245] Initializing cgroup subsys blkio
[ 0.048010] Initializing cgroup subsys memory
[ 0.050645] Initializing cgroup subsys devices
[ 0.052009] Initializing cgroup subsys freezer
[ 0.056010] Initializing cgroup subsys perf_event
[ 0.060010] Initializing cgroup subsys hugetlb
[ 0.064089] mce: CPU supports 10 MCE banks
[ 0.068048] Last level iTLB entries: 4KB 0, 2MB 0, 4MB 0
[ 0.071740] Last level dTLB entries: 4KB 0, 2MB 0, 4MB 0, 1GB 0
[ 0.072230] Freeing SMP alternatives memory: 40K (ffffffff8251a000 - ffffffff82524000)
[ 0.085761] ftrace: allocating 40928 entries in 160 pages
[ 0.112125] enabled ExtINT on CPU#0
[ 0.116911] ENABLING IO-APIC IRQs
[ 0.118114] init IO_APIC IRQs
[ 0.120008] apic 0 pin 0 not connected
[ 0.122361] IOAPIC[0]: Set routing entry (0-1 -> 0x31 -> IRQ 1 Mode:0 Active:0 Dest:1)
[ 0.124039] IOAPIC[0]: Set routing entry (0-2 -> 0x30 -> IRQ 0 Mode:0 Active:0 Dest:1)
[ 0.126574] IOAPIC[0]: Set routing entry (0-2 -> 0x30 -> IRQ 0 Mode:0 Active:0 Dest:1)
[ 0.128028] IOAPIC[0]: Set routing entry (0-3 -> 0x33 -> IRQ 3 Mode:0 Active:0 Dest:1)
[ 0.132030] IOAPIC[0]: Set routing entry (0-4 -> 0x34 -> IRQ 4 Mode:0 Active:0 Dest:1)
[ 0.136041] IOAPIC[0]: Set routing entry (0-5 -> 0x35 -> IRQ 5 Mode:1 Active:0 Dest:1)
[ 0.138562] IOAPIC[0]: Set routing entry (0-6 -> 0x36 -> IRQ 6 Mode:0 Active:0 Dest:1)
[ 0.140040] IOAPIC[0]: Set routing entry (0-7 -> 0x37 -> IRQ 7 Mode:0 Active:0 Dest:1)
[ 0.144034] IOAPIC[0]: Set routing entry (0-8 -> 0x38 -> IRQ 8 Mode:0 Active:0 Dest:1)
[ 0.148044] IOAPIC[0]: Set routing entry (0-9 -> 0x39 -> IRQ 9 Mode:1 Active:0 Dest:1)
[ 0.152042] IOAPIC[0]: Set routing entry (0-10 -> 0x3a -> IRQ 10 Mode:1 Active:0 Dest:1)
[ 0.156026] IOAPIC[0]: Set routing entry (0-11 -> 0x3b -> IRQ 11 Mode:1 Active:0 Dest:1)
[ 0.160046] IOAPIC[0]: Set routing entry (0-12 -> 0x3c -> IRQ 12 Mode:0 Active:0 Dest:1)
[ 0.164032] IOAPIC[0]: Set routing entry (0-13 -> 0x3d -> IRQ 13 Mode:0 Active:0 Dest:1)
[ 0.168035] IOAPIC[0]: Set routing entry (0-14 -> 0x3e -> IRQ 14 Mode:0 Active:0 Dest:1)
[ 0.172030] IOAPIC[0]: Set routing entry (0-15 -> 0x3f -> IRQ 15 Mode:0 Active:0 Dest:1)
[ 0.176023] apic 0 pin 16 not connected
[ 0.177407] apic 0 pin 17 not connected
[ 0.180004] apic 0 pin 18 not connected
[ 0.181442] apic 0 pin 19 not connected
[ 0.182848] apic 0 pin 20 not connected
[ 0.184004] apic 0 pin 21 not connected
[ 0.185498] apic 0 pin 22 not connected
[ 0.186906] apic 0 pin 23 not connected
[ 0.188162] ..TIMER: vector=0x30 apic1=0 pin1=2 apic2=-1 pin2=-1
[ 0.190452] Using local APIC timer interrupts.
[ 0.190452] calibrating APIC timer ...
[ 0.196000] ... lapic delta = 6250096
[ 0.196000] ... PM-Timer delta = 357958
[ 0.196000] ... PM-Timer result ok
[ 0.196000] ..... delta 6250096
[ 0.196000] ..... mult: 268439579
[ 0.196000] ..... calibration result: 4000061
[ 0.196000] ..... CPU clock speed is 2693.2182 MHz.
[ 0.196000] ..... host bus clock speed is 1000.0061 MHz.
[ 0.196058] smpboot: CPU0: Intel Common KVM processor (fam: 0f, model: 06, stepping: 01)
[ 0.204032] Performance Events: unsupported Netburst CPU model 6 no PMU driver, software events only.
[ 0.210271] x86: Booting SMP configuration:
[ 0.212010] .... node #0, CPUs: #1
[ 0.008000] kvm-clock: cpu 1, msr 0:1151d041, secondary cpu clock
[ 0.008000] masked ExtINT on CPU#1
[ 0.244077] x86: Booted up 1 node, 2 CPUs
[ 0.244060] KVM setup async PF for cpu 1
[ 0.244060] kvm-stealtime: cpu 1, msr 1130d380
[ 0.248005] smpboot: Total of 2 processors activated (10774.03 BogoMIPS)
[ 0.256120] devtmpfs: initialized
[ 0.265478] clocksource jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645041785100000 ns
[ 0.272176] xor: measuring software checksum speed
[ 0.311480] prefetch64-sse: 9803.000 MB/sec
[ 0.351481] generic_sse: 9191.000 MB/sec
[ 0.352028] xor: using function: prefetch64-sse (9803.000 MB/sec)
[ 0.353763] atomic64_test: passed for x86-64 platform with CX8 and with SSE
[ 0.360002] NET: Registered protocol family 16
[ 0.376012] cpuidle: using governor ladder
[ 0.388010] cpuidle: using governor menu
[ 0.389949] ACPI: bus type PCI registered
[ 0.391252] acpiphp: ACPI Hot Plug PCI Controller Driver version: 0.5
[ 0.393270] PCI: Using configuration type 1 for base access
[ 0.491499] raid6: sse2x1 gen() 4133 MB/s
[ 0.559473] raid6: sse2x1 xor() 3459 MB/s
[ 0.627459] raid6: sse2x2 gen() 3429 MB/s
[ 0.695460] raid6: sse2x2 xor() 4177 MB/s
[ 0.763464] raid6: sse2x4 gen() 7301 MB/s
[ 0.831465] raid6: sse2x4 xor() 3033 MB/s
[ 0.832006] raid6: using algorithm sse2x4 gen() 7301 MB/s
[ 0.833489] raid6: .... xor() 3033 MB/s, rmw enabled
[ 0.834947] raid6: using intx1 recovery algorithm
[ 0.836065] ACPI: Added _OSI(Module Device)
[ 0.837565] ACPI: Added _OSI(Processor Device)
[ 0.840009] ACPI: Added _OSI(3.0 _SCP Extensions)
[ 0.841464] ACPI: Added _OSI(Processor Aggregator Device)
[ 0.844855] IOAPIC[0]: Set routing entry (0-9 -> 0x39 -> IRQ 9 Mode:1 Active:0 Dest:3)
[ 0.848810] ACPI: Interpreter enabled
[ 0.850081] ACPI Exception: AE_NOT_FOUND, While evaluating Sleep State [\_S1_] (20150410/hwxface-580)
[ 0.852012] ACPI Exception: AE_NOT_FOUND, While evaluating Sleep State [\_S2_] (20150410/hwxface-580)
[ 0.856026] ACPI: (supports S0 S3 S4 S5)
[ 0.859704] ACPI: Using IOAPIC for interrupt routing
[ 0.860092] PCI: Using host bridge windows from ACPI; if necessary, use "pci=nocrs" and report a bug
[ 0.873679] ACPI: PCI Root Bridge [PCI0] (domain 0000 [bus 00-ff])
[ 0.876061] acpi PNP0A03:00: _OSC: OS supports [ASPM ClockPM Segments MSI]
[ 0.877938] acpi PNP0A03:00: _OSC failed (AE_NOT_FOUND); disabling ASPM
[ 0.880084] acpi PNP0A03:00: fail to add MMCONFIG information, can't access extended PCI configuration space under this bridge.
[ 0.884016] BUG: unable to handle kernel paging request at fffffffffffffff8
[ 0.886242] IP: [<ffffffff814e80c1>] pci_domain_nr+0xf/0x12
[ 0.888000] PGD 220c067 PUD 220e067 PMD 0
[ 0.888000] Oops: 0000 [#1] SMP
[ 0.888000] Modules linked in:
[ 0.888000] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.1.0-rc1-00012-g3e13c9f #18
[ 0.888000] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.7.5-20140531_083030-gandalf 04/01/2014
[ 0.888000] task: ffff880010db8000 ti: ffff880010de0000 task.ti: ffff880010de0000
[ 0.888000] RIP: 0010:[<ffffffff814e80c1>] [<ffffffff814e80c1>] pci_domain_nr+0xf/0x12
[ 0.888000] RSP: 0000:ffff880010de3b70 EFLAGS: 00010293
[ 0.888000] RAX: fffffffffffffff8 RBX: ffff88000fd34400 RCX: 0000000000000000
[ 0.888000] RDX: ffff88000fd34470 RSI: ffff880010db8000 RDI: ffff88000fd34400
[ 0.888000] RBP: ffff880010de3c08 R08: ffff88000f841b58 R09: 000000000000b500
[ 0.888000] R10: 0000000000000001 R11: 000000000000bbaa R12: ffffffff8233efd0
[ 0.888000] R13: 0000000000000000 R14: 0000000000000000 R15: ffff880010de3c48
[ 0.888000] FS: 0000000000000000(0000) GS:ffff880011200000(0000) knlGS:0000000000000000
[ 0.888000] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[ 0.888000] CR2: fffffffffffffff8 CR3: 000000000220b000 CR4: 00000000000006f0
[ 0.888000] Stack:
[ 0.888000] ffffffff814e5bd1 ffff880010de3c58 ffff880010c17258 ffff88000f841b58
[ 0.888000] 00000000ffffffff ffff880010de3c08 ffffffff81572e4c ffff880010de3bc8
[ 0.888000] ffffffff81f9cd14 ffff880010de3bc0 ffffffff00000010 ffff880010de3c18
[ 0.888000] Call Trace:
[ 0.888000] [<ffffffff814e5bd1>] ? pci_create_root_bus+0x6b/0x389
[ 0.888000] [<ffffffff81572e4c>] ? dev_warn+0x53/0x55
[ 0.888000] [<ffffffff818e865b>] pci_acpi_scan_root+0x4e0/0x53f
[ 0.888000] [<ffffffff81511114>] acpi_pci_root_add+0x394/0x46c
[ 0.888000] [<ffffffff815098e9>] ? acpi_bus_get_status_handle+0x1f/0x3b
[ 0.888000] [<ffffffff8150cb40>] acpi_bus_attach+0xd4/0x173
[ 0.888000] [<ffffffff8150cb9a>] acpi_bus_attach+0x12e/0x173
[ 0.888000] [<ffffffff815762a5>] ? device_attach+0x8d/0x98
[ 0.888000] [<ffffffff8150cb9a>] acpi_bus_attach+0x12e/0x173
[ 0.888000] [<ffffffff8150ccf9>] acpi_bus_scan+0x61/0x6c
[ 0.888000] [<ffffffff82405ed5>] ? acpi_sleep_proc_init+0x2a/0x2a
[ 0.888000] [<ffffffff82406307>] acpi_scan_init+0x7c/0x1b2
[ 0.888000] [<ffffffff82405ed5>] ? acpi_sleep_proc_init+0x2a/0x2a
[ 0.888000] [<ffffffff82405ed5>] ? acpi_sleep_proc_init+0x2a/0x2a
[ 0.888000] [<ffffffff8240612e>] acpi_init+0x259/0x276
[ 0.888000] [<ffffffff82405ed5>] ? acpi_sleep_proc_init+0x2a/0x2a
[ 0.888000] [<ffffffff8100032a>] do_one_initcall+0xfd/0x18f
[ 0.888000] [<ffffffff823be0eb>] kernel_init_freeable+0x1b7/0x23f
[ 0.888000] [<ffffffff81a27a45>] ? rest_init+0x8c/0x8c
[ 0.888000] [<ffffffff81a27a53>] kernel_init+0xe/0xdf
[ 0.888000] [<ffffffff81a38882>] ret_from_fork+0x42/0x70
[ 0.888000] [<ffffffff81a27a45>] ? rest_init+0x8c/0x8c
[ 0.888000] Code: d8 5b 41 5c 5d c3 0f 1f 44 00 00 55 48 89 f7 48 89 d6 48 89 e5 e8 91 ff ff ff 5d c3 0f 1f 44 00 00 55 48 89 e5 e8 63 e7 ff ff 5d <8b> 00 c3 0f 1f 44 00 00 31 c0 81 bf 28 03 00 00 00 01 00 00 0f
[ 0.888000] RIP [<ffffffff814e80c1>] pci_domain_nr+0xf/0x12
[ 0.888000] RSP <ffff880010de3b70>
[ 0.888000] CR2: fffffffffffffff8
[ 0.888000] ---[ end trace eac89ddbfb4c36c7 ]---
[ 0.888000] Kernel panic - not syncing: Fatal exception

Elapsed time: 10
qemu-system-x86_64 -enable-kvm -cpu kvm64 -kernel /kernel/x86_64-lkp/3e13c9fbd94599113876de94efbae2b36ea8f335/vmlinuz-4.1.0-rc1-00012-g3e13c9f -append 'hung_task_panic=1 earlyprintk=ttyS0,115200 rd.udev.log-priority=err systemd.log_target=journal systemd.log_level=warning debug apic=debug sysrq_always_enabled rcupdate.rcu_cpu_stall_timeout=100 panic=-1 softlockup_panic=1 nmi_watchdog=panic oops=panic load_ramdisk=2 prompt_ramdisk=0 console=ttyS0,115200 console=tty0 vga=normal root=/dev/ram0 rw link=/kbuild-tests/run-queue/kvm/x86_64-lkp/yijingwang-pci:enumer11:3e13c9fbd94599113876de94efbae2b36ea8f335:bisect-linux-9/.vmlinuz-3e13c9fbd94599113876de94efbae2b36ea8f335-20150429223647-9-ivb42 branch=yijingwang-pci/enumer11 BOOT_IMAGE=/kernel/x86_64-lkp/3e13c9fbd94599113876de94efbae2b36ea8f335/vmlinuz-4.1.0-rc1-00012-g3e13c9f drbd.minor_count=8' -initrd /kernel-tests/initrd/quantal-core-x86_64.cgz -m 300 -smp 2 -device e1000,netdev=net0 -netdev user,id=net0 -boot order=nc -no-reboot -watchdog i6300esb -rtc base=localtime -drive file=/fs/vdisk/disk0-quantal-ivb42-73,media=disk,if=virtio -drive file=/fs/vdisk/disk1-quantal-ivb42-73,media=disk,if=virtio -drive file=/fs/vdisk/disk2-quantal-ivb42-73,media=disk,if=virtio -drive file=/fs/vdisk/disk3-quantal-ivb42-73,media=disk,if=virtio -drive file=/fs/vdisk/disk4-quantal-ivb42-73,media=disk,if=virtio -drive file=/fs/vdisk/disk5-quantal-ivb42-73,media=disk,if=virtio -drive file=/fs/vdisk/disk6-quantal-ivb42-73,media=disk,if=virtio -pidfile /dev/shm/kboot/pid-quantal-ivb42-73 -serial file:/dev/shm/kboot/serial-quantal-ivb42-73 -daemonize -display none -monitor null