Bisected GFP in bfq_bfqq_expire on v5.1-rc1

Dmitrii Tcvetkov
2019-03-29T13:08:25Z

[-- Attachment #1: Type: text/plain, Size: 657 bytes --]

Hi,

I got kernel panic since v5.1-rc1 when working with files on block
device with BFQ scheduler assigned. I didn't find trivial way to
reproduce the panic but "git checkout origin/linux-5.0.y"
on linux-stable-rc[1] git repo on btrfs filesystem reproduces the
problem 100% of the time on my bare-metal machine and in a VM.

Bisect led me to commit 9dee8b3b057e1 (block, bfq: fix queue removal
from weights tree). After reverting this commit on top of current
mainline master(9936328b41ce) I can't reproduce the problem.

dmesg with the panic and bisect log attached.

[1] https://kernel.googlesource.com/pub/scm/linux/kernel/git/stable/linux-stable-rc.git

[-- Attachment #2: dmesg.txt --]
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[ 0.000000][ T0] Linux version 5.1.0-rc2-ARCH-test2 (feanor@fire) (gcc version 8.3.0 (GCC)) #4 SMP Fri Mar 29 15:21:03 MSK 2019
[ 0.000000][ T0] Command line: BOOT_IMAGE=/vmlinuz-linux-test2 root=UUID=9c04c835-60ce-4acf-973d-4a47ac59e769 rw console=ttyS0,115200n8 stack_guard_gap=512 page_poison=1 slub_debug=FZP pti=on spectre_v2=on
spectre_v2_user=on spec_store_bypass_disable=on
[ 0.000000][ T0] KERNEL supported cpus:
[ 0.000000][ T0] Intel GenuineIntel
[ 0.000000][ T0] AMD AuthenticAMD
[ 0.000000][ T0] random: get_random_u32 called from bsp_init_amd+0x171/0x200 with crng_init=0
[ 0.000000][ T0] x86/fpu: Supporting XSAVE feature 0x001: 'x87 floating point registers'
[ 0.000000][ T0] x86/fpu: Supporting XSAVE feature 0x002: 'SSE registers'
[ 0.000000][ T0] x86/fpu: Supporting XSAVE feature 0x004: 'AVX registers'
[ 0.000000][ T0] x86/fpu: xstate_offset[2]: 576, xstate_sizes[2]: 256
[ 0.000000][ T0] x86/fpu: Enabled xstate features 0x7, context size is 832 bytes, using 'standard' format.
[ 0.000000][ T0] BIOS-provided physical RAM map:
[ 0.000000][ T0] BIOS-e820: [mem 0x0000000000000000-0x000000000009ffff] usable
[ 0.000000][ T0] BIOS-e820: [mem 0x0000000000100000-0x00000000007fffff] usable
[ 0.000000][ T0] BIOS-e820: [mem 0x0000000000800000-0x0000000000807fff] ACPI NVS
[ 0.000000][ T0] BIOS-e820: [mem 0x0000000000808000-0x000000000080ffff] usable
[ 0.000000][ T0] BIOS-e820: [mem 0x0000000000810000-0x00000000008fffff] ACPI NVS
[ 0.000000][ T0] BIOS-e820: [mem 0x0000000000900000-0x000000007e7cffff] usable
[ 0.000000][ T0] BIOS-e820: [mem 0x000000007e7d0000-0x000000007e7d0fff] ACPI data
[ 0.000000][ T0] BIOS-e820: [mem 0x000000007e7d1000-0x000000007ea6dfff] usable
[ 0.000000][ T0] BIOS-e820: [mem 0x000000007ea6e000-0x000000007ea79fff] ACPI NVS
[ 0.000000][ T0] BIOS-e820: [mem 0x000000007ea7a000-0x000000007eb1afff] reserved
[ 0.000000][ T0] BIOS-e820: [mem 0x000000007eb1b000-0x000000007fb9afff] usable
[ 0.000000][ T0] BIOS-e820: [mem 0x000000007fb9b000-0x000000007fbcafff] type 20
[ 0.000000][ T0] BIOS-e820: [mem 0x000000007fbcb000-0x000000007fbf2fff] reserved
[ 0.000000][ T0] BIOS-e820: [mem 0x000000007fbf3000-0x000000007fbfafff] ACPI data
[ 0.000000][ T0] BIOS-e820: [mem 0x000000007fbfb000-0x000000007fbfefff] ACPI NVS
[ 0.000000][ T0] BIOS-e820: [mem 0x000000007fbff000-0x000000007fedbfff] usable
[ 0.000000][ T0] BIOS-e820: [mem 0x000000007fedc000-0x000000007ff5ffff] reserved
[ 0.000000][ T0] BIOS-e820: [mem 0x000000007ff60000-0x000000007fffffff] ACPI NVS
[ 0.000000][ T0] BIOS-e820: [mem 0x0000000080000000-0x000000008fffffff] reserved
[ 0.000000][ T0] BIOS-e820: [mem 0x00000000ffc00000-0x00000000ffffffff] reserved
[ 0.000000][ T0] BIOS-e820: [mem 0x0000000100000000-0x000000017fffffff] usable
[ 0.000000][ T0] NX (Execute Disable) protection: active
[ 0.000000][ T0] efi: EFI v2.70 by EDK II
[ 0.000000][ T0] efi: SMBIOS=0x7fbcc000 ACPI=0x7fbfa000 ACPI 2.0=0x7fbfa014 MEMATTR=0x7e8c4298
[ 0.000000][ T0] SMBIOS 2.8 present.
[ 0.000000][ T0] DMI: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 0.0.0 02/06/2015
[ 0.000000][ T0] Hypervisor detected: KVM
[ 0.000000][ T0] kvm-clock: Using msrs 4b564d01 and 4b564d00
[ 0.000000][ T0] kvm-clock: cpu 0, msr 2ccf7001, primary cpu clock
[ 0.000000][ T0] kvm-clock: using sched offset of 14312683989764 cycles
[ 0.000002][ T0] clocksource: kvm-clock: mask: 0xffffffffffffffff max_cycles: 0x1cd42e4dffb, max_idle_ns: 881590591483 ns
[ 0.000004][ T0] tsc: Detected 4515.104 MHz processor
[ 0.000027][ T0] last_pfn = 0x180000 max_arch_pfn = 0x400000000
[ 0.000077][ T0] x86/PAT: Configuration [0-7]: WB WC UC- UC WB WP UC- WT
[ 0.000086][ T0] last_pfn = 0x7fedc max_arch_pfn = 0x400000000
[ 0.003468][ T0] check: Scanning 1 areas for low memory corruption
[ 0.003480][ T0] Kernel/User page tables isolation: force enabled on command line.
[ 0.003484][ T0] Using GB pages for direct mapping
[ 0.003890][ T0] Secure boot could not be determined
[ 0.003892][ T0] RAMDISK: [mem 0x37157000-0x378a2fff]
[ 0.003902][ T0] ACPI: Early table checksum verification disabled
[ 0.003904][ T0] ACPI: RSDP 0x000000007FBFA014 000024 (v02 BOCHS )
[ 0.003907][ T0] ACPI: XSDT 0x000000007FBF90E8 00004C (v01 BOCHS BXPCFACP 00000001 01000013)
[ 0.003911][ T0] ACPI: FACP 0x000000007FBF6000 0000F4 (v03 BOCHS BXPCFACP 00000001 BXPC 00000001)
[ 0.003915][ T0] ACPI: DSDT 0x000000007FBF7000 001FC9 (v01 BOCHS BXPCDSDT 00000001 BXPC 00000001)
[ 0.003918][ T0] ACPI: FACS 0x000000007FBFD000 000040
[ 0.003920][ T0] ACPI: APIC 0x000000007FBF5000 000090 (v01 BOCHS BXPCAPIC 00000001 BXPC 00000001)
[ 0.003923][ T0] ACPI: HPET 0x000000007FBF4000 000038 (v01 BOCHS BXPCHPET 00000001 BXPC 00000001)
[ 0.003925][ T0] ACPI: MCFG 0x000000007FBF3000 00003C (v01 BOCHS BXPCMCFG 00000001 BXPC 00000001)
[ 0.003927][ T0] ACPI: BGRT 0x000000007E7D0000 000038 (v01 INTEL EDK2 00000002 01000013)
[ 0.003954][ T0] Zone ranges:
[ 0.003955][ T0] DMA [mem 0x0000000000001000-0x0000000000ffffff]
[ 0.003956][ T0] DMA32 [mem 0x0000000001000000-0x00000000ffffffff]
[ 0.003958][ T0] Normal [mem 0x0000000100000000-0x000000017fffffff]
[ 0.003959][ T0] Movable zone start for each node
[ 0.003960][ T0] Early memory node ranges
[ 0.003961][ T0] node 0: [mem 0x0000000000001000-0x000000000009ffff]
[ 0.003962][ T0] node 0: [mem 0x0000000000100000-0x00000000007fffff]
[ 0.003963][ T0] node 0: [mem 0x0000000000808000-0x000000000080ffff]
[ 0.003964][ T0] node 0: [mem 0x0000000000900000-0x000000007e7cffff]
[ 0.003965][ T0] node 0: [mem 0x000000007e7d1000-0x000000007ea6dfff]
[ 0.003965][ T0] node 0: [mem 0x000000007eb1b000-0x000000007fb9afff]
[ 0.003966][ T0] node 0: [mem 0x000000007fbff000-0x000000007fedbfff]
[ 0.003967][ T0] node 0: [mem 0x0000000100000000-0x000000017fffffff]
[ 0.003984][ T0] Zeroed struct page in unavailable ranges: 911 pages
[ 0.003985][ T0] Initmem setup node 0 [mem 0x0000000000001000-0x000000017fffffff]
[ 0.021164][ T0] ACPI: PM-Timer IO Port: 0x608
[ 0.021174][ T0] ACPI: LAPIC_NMI (acpi_id[0xff] dfl dfl lint[0x1])
[ 0.021207][ T0] IOAPIC[0]: apic_id 0, version 17, address 0xfec00000, GSI 0-23
[ 0.021209][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
[ 0.021211][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 5 global_irq 5 high level)
[ 0.021212][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
[ 0.021214][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 10 global_irq 10 high level)
[ 0.021215][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 11 global_irq 11 high level)
[ 0.021219][ T0] Using ACPI (MADT) for SMP configuration information
[ 0.021221][ T0] ACPI: HPET id: 0x8086a201 base: 0xfed00000
[ 0.021228][ T0] smpboot: Allowing 4 CPUs, 0 hotplug CPUs
[ 0.021256][ T0] [mem 0x90000000-0xffbfffff] available for PCI devices
[ 0.021258][ T0] Booting paravirtualized kernel on KVM
[ 0.021260][ T0] clocksource: refined-jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[ 0.110659][ T0] random: get_random_bytes called from start_kernel+0xa5/0x46d with crng_init=0
[ 0.110668][ T0] setup_percpu: NR_CPUS:8 nr_cpumask_bits:8 nr_cpu_ids:4 nr_node_ids:1
[ 0.111006][ T0] percpu: Embedded 41 pages/cpu @(____ptrval____) s129624 r8192 d30120 u524288
[ 0.111036][ T0] KVM setup async PF for cpu 0
[ 0.111042][ T0] kvm-stealtime: cpu 0, msr 17ba14e00
[ 0.111048][ T0] PV qspinlock hash table entries: 256 (order: 0, 4096 bytes)
[ 0.111051][ T0] Built 1 zonelists, mobility grouping on. Total pages: 1029479
[ 0.111054][ T0] Kernel command line: BOOT_IMAGE=/vmlinuz-linux-test2 root=UUID=9c04c835-60ce-4acf-973d-4a47ac59e769 rw console=ttyS0,115200n8 stack_guard_gap=512 page_poison=1 slub_debug=FZP pti=on spectr
e_v2=on spectre_v2_user=on spec_store_bypass_disable=on
[ 0.111762][ T0] Dentry cache hash table entries: 524288 (order: 10, 4194304 bytes)
[ 0.112083][ T0] Inode-cache hash table entries: 262144 (order: 9, 2097152 bytes)
[ 0.740803][ T0] Memory: 3993788K/4190660K available (10242K kernel code, 514K rwdata, 1856K rodata, 960K init, 1128K bss, 196872K reserved, 0K cma-reserved)
[ 0.740813][ T0] random: get_random_u64 called from __kmem_cache_create+0x3d/0x4f0 with crng_init=0
[ 0.741040][ T0] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=4, Nodes=1
[ 0.741042][ T0] Kernel/User page tables isolation: enabled
[ 0.741151][ T0] rcu: Hierarchical RCU implementation.
[ 0.741152][ T0] rcu: RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=4.
[ 0.741154][ T0] rcu: RCU calculated value of scheduler-enlistment delay is 10 jiffies.
[ 0.741155][ T0] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=4
[ 0.741171][ T0] NR_IRQS: 4352, nr_irqs: 456, preallocated irqs: 16
[ 0.741539][ T0] Console: colour dummy device 80x25
[ 0.935721][ T0] printk: console [ttyS0] enabled
[ 0.936785][ T0] ACPI: Core revision 20190215
[ 0.938098][ T0] clocksource: hpet: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604467 ns
[ 0.940492][ T0] APIC: Switch to symmetric I/O mode setup
[ 0.941858][ T0] KVM setup pv IPIs
[ 0.943800][ T0] ..TIMER: vector=0x30 apic1=0 pin1=2 apic2=-1 pin2=-1
[ 0.945374][ T0] tsc: Marking TSC unstable due to TSCs unsynchronized
[ 0.946949][ T0] Calibrating delay loop (skipped) preset value.. 9030.20 BogoMIPS (lpj=45151040)
[ 0.948956][ T0] pid_max: default: 32768 minimum: 301
[ 0.963016][ T0] LSM: Security Framework initializing
[ 0.964218][ T0] Yama: becoming mindful.
[ 0.965231][ T0] AppArmor: AppArmor initialized
[ 0.966312][ T0] Mount-cache hash table entries: 8192 (order: 4, 65536 bytes)
[ 0.966944][ T0] Mountpoint-cache hash table entries: 8192 (order: 4, 65536 bytes)
[ 0.969091][ T0] Last level iTLB entries: 4KB 512, 2MB 1024, 4MB 512
[ 0.970578][ T0] Last level dTLB entries: 4KB 512, 2MB 255, 4MB 127, 1GB 0
[ 0.972098][ T0] Spectre V2 : Mitigation: Full AMD retpoline
[ 0.973439][ T0] Spectre V2 : Spectre v2 / SpectreRSB mitigation: Filling RSB on context switch
[ 0.975568][ T0] Spectre V2 : mitigation: Enabling always-on Indirect Branch Prediction Barrier
[ 0.976944][ T0] Speculative Store Bypass: Mitigation: Speculative Store Bypass disabled
[ 0.979106][ T0] Freeing SMP alternatives memory: 24K
[ 0.981254][ T1] smpboot: CPU0: AMD FX(tm)-9590 Eight-Core Processor (family: 0x15, model: 0x2, stepping: 0x0)
[ 0.983856][ T1] Performance Events: Fam15h core perfctr, AMD PMU driver.
[ 0.985498][ T1] ... version: 0
[ 0.986631][ T1] ... bit width: 48
[ 0.986939][ T1] ... generic registers: 6
[ 0.986939][ T1] ... value mask: 0000ffffffffffff
[ 0.986939][ T1] ... max period: 00007fffffffffff
[ 0.986943][ T1] ... fixed-purpose events: 0
[ 0.987935][ T1] ... event mask: 000000000000003f
[ 0.989336][ T1] rcu: Hierarchical SRCU implementation.
[ 0.990829][ T1] smp: Bringing up secondary CPUs ...
[ 0.992239][ T1] x86: Booting SMP configuration:
[ 0.993351][ T1] .... node #0, CPUs: #1
[ 0.205447][ T0] kvm-clock: cpu 1, msr 2ccf7041, secondary cpu clock
[ 0.994852][ T14] KVM setup async PF for cpu 1
[ 0.994852][ T14] kvm-stealtime: cpu 1, msr 17ba94e00
[ 0.997088][ T1] #2
[ 0.205447][ T0] kvm-clock: cpu 2, msr 2ccf7081, secondary cpu clock
[ 0.997892][ T19] KVM setup async PF for cpu 2
[ 0.999285][ T19] kvm-stealtime: cpu 2, msr 17bb14e00
[ 1.000406][ T1] #3
[ 0.205447][ T0] kvm-clock: cpu 3, msr 2ccf70c1, secondary cpu clock
[ 1.000406][ T24] KVM setup async PF for cpu 3
[ 1.000406][ T24] kvm-stealtime: cpu 3, msr 17bb94e00
[ 1.006947][ T1] smp: Brought up 1 node, 4 CPUs
[ 1.008089][ T1] smpboot: Max logical packages: 4
[ 1.009249][ T1] smpboot: Total of 4 processors activated (36120.83 BogoMIPS)
[ 1.011441][ T1] devtmpfs: initialized
[ 1.011441][ T1] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[ 1.011441][ T1] futex hash table entries: 1024 (order: 4, 65536 bytes)
[ 1.017103][ T1] xor: automatically using best checksumming function avx
[ 1.019114][ T1] NET: Registered protocol family 16
[ 1.020415][ T1] audit: initializing netlink subsys (disabled)
[ 1.021830][ T34] audit: type=2000 audit(1553862765.564:1): state=initialized audit_enabled=0 res=1
[ 1.021830][ T1] KVM setup pv remote TLB flush
[ 1.021830][ T1] ACPI: bus type PCI registered
[ 1.021830][ T1] PCI: MMCONFIG for domain 0000 [bus 00-ff] at [mem 0x80000000-0x8fffffff] (base 0x80000000)
[ 1.026963][ T1] PCI: MMCONFIG at [mem 0x80000000-0x8fffffff] reserved in E820
[ 1.028553][ T1] PCI: Using configuration type 1 for base access
[ 1.043902][ T1] HugeTLB registered 2.00 MiB page size, pre-allocated 0 pages
[ 1.043902][ T1] cryptd: max_cpu_qlen set to 1000
[ 1.047083][ T1] raid6: using algorithm sse2x4 gen() 0 MB/s
[ 1.048201][ T1] raid6: .... xor() 0 MB/s, rmw enabled
[ 1.049376][ T1] raid6: using ssse3x2 recovery algorithm
[ 1.050803][ T1] ACPI: Added _OSI(Module Device)
[ 1.052030][ T1] ACPI: Added _OSI(Processor Device)
[ 1.053108][ T1] ACPI: Added _OSI(3.0 _SCP Extensions)
[ 1.054390][ T1] ACPI: Added _OSI(Processor Aggregator Device)
[ 1.055920][ T1] ACPI: Added _OSI(Linux-Dell-Video)
[ 1.056946][ T1] ACPI: Added _OSI(Linux-Lenovo-NV-HDMI-Audio)
[ 1.058440][ T1] ACPI: Added _OSI(Linux-HPI-Hybrid-Graphics)
[ 1.069935][ T1] ACPI: 1 ACPI AML tables successfully acquired and loaded
[ 1.073425][ T1] ACPI: Interpreter enabled
[ 1.074480][ T1] ACPI: (supports S0 S5)
[ 1.075513][ T1] ACPI: Using IOAPIC for interrupt routing
[ 1.077098][ T1] PCI: Using host bridge windows from ACPI; if necessary, use "pci=nocrs" and report a bug
[ 1.079545][ T1] ACPI: Enabled 1 GPEs in block 00 to 3F
[ 1.090567][ T1] ACPI: PCI Root Bridge [PCI0] (domain 0000 [bus 00-ff])
[ 1.092055][ T1] acpi PNP0A08:00: _OSC: OS supports [ExtendedConfig ASPM ClockPM Segments MSI]
[ 1.094474][ T1] acpi PNP0A08:00: _OSC: platform does not support [LTR]
[ 1.096344][ T1] acpi PNP0A08:00: _OSC: OS now controls [PME AER PCIeCapability]
[ 1.097052][ T1] PCI host bridge to bus 0000:00
[ 1.098135][ T1] pci_bus 0000:00: root bus resource [io 0x0000-0x0cf7 window]
[ 1.099750][ T1] pci_bus 0000:00: root bus resource [io 0x0d00-0xffff window]
[ 1.101524][ T1] pci_bus 0000:00: root bus resource [mem 0x000a0000-0x000bffff window]
[ 1.103482][ T1] pci_bus 0000:00: root bus resource [mem 0x90000000-0xfebfffff window]
[ 1.105180][ T1] pci_bus 0000:00: root bus resource [mem 0x800000000-0xfffffffff window]
[ 1.106746][ T1] pci_bus 0000:00: root bus resource [bus 00-ff]
[ 1.119494][ T1] pci 0000:00:01.0: BAR 0: assigned to efifb
[ 1.176675][ T1] pci 0000:00:1f.0: quirk: [io 0x0600-0x067f] claimed by ICH6 ACPI/GPIO/TCO
[ 1.192653][ T1] ACPI: PCI Interrupt Link [LNKA] (IRQs 5 *10 11)
[ 1.194404][ T1] ACPI: PCI Interrupt Link [LNKB] (IRQs 5 *10 11)
[ 1.196211][ T1] ACPI: PCI Interrupt Link [LNKC] (IRQs 5 10 *11)
[ 1.197237][ T1] ACPI: PCI Interrupt Link [LNKD] (IRQs 5 10 *11)
[ 1.198921][ T1] ACPI: PCI Interrupt Link [LNKE] (IRQs 5 *10 11)
[ 1.200535][ T1] ACPI: PCI Interrupt Link [LNKF] (IRQs 5 *10 11)
[ 1.202193][ T1] ACPI: PCI Interrupt Link [LNKG] (IRQs 5 10 *11)
[ 1.203854][ T1] ACPI: PCI Interrupt Link [LNKH] (IRQs 5 10 *11)
[ 1.205333][ T1] ACPI: PCI Interrupt Link [GSIA] (IRQs *16)
[ 1.206798][ T1] ACPI: PCI Interrupt Link [GSIB] (IRQs *17)
[ 1.206987][ T1] ACPI: PCI Interrupt Link [GSIC] (IRQs *18)
[ 1.208332][ T1] ACPI: PCI Interrupt Link [GSID] (IRQs *19)
[ 1.209814][ T1] ACPI: PCI Interrupt Link [GSIE] (IRQs *20)
[ 1.211325][ T1] ACPI: PCI Interrupt Link [GSIF] (IRQs *21)
[ 1.212832][ T1] ACPI: PCI Interrupt Link [GSIG] (IRQs *22)
[ 1.214351][ T1] ACPI: PCI Interrupt Link [GSIH] (IRQs *23)
[ 1.216803][ T1] pci 0000:00:01.0: vgaarb: setting as boot VGA device
[ 1.216803][ T1] pci 0000:00:01.0: vgaarb: VGA device added: decodes=io+mem,owns=io+mem,locks=none
[ 1.216956][ T1] pci 0000:00:01.0: vgaarb: bridge control possible
[ 1.218545][ T1] vgaarb: loaded
[ 1.219671][ T1] SCSI subsystem initialized
[ 1.220864][ T1] ACPI: bus type USB registered
[ 1.222132][ T1] usbcore: registered new interface driver usbfs
[ 1.223720][ T1] usbcore: registered new interface driver hub
[ 1.225273][ T1] usbcore: registered new device driver usb
[ 1.226775][ T1] pps_core: LinuxPPS API ver. 1 registered
[ 1.226944][ T1] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it>
[ 1.229148][ T1] PTP clock support registered
[ 1.230475][ T1] Registered efivars operations
[ 1.231674][ T1] Advanced Linux Sound Architecture Driver Initialized.
[ 1.231674][ T1] PCI: Using ACPI for IRQ routing
[ 1.289794][ T1] hpet0: at MMIO 0xfed00000, IRQs 2, 8, 0
[ 1.291165][ T1] hpet0: 3 comparators, 64-bit 100.000000 MHz counter
[ 1.295956][ T1] clocksource: Switched to clocksource kvm-clock
[ 1.295956][ T1] AppArmor: AppArmor Filesystem Enabled
[ 1.295956][ T1] pnp: PnP ACPI init
[ 1.295956][ T1] pnp: PnP ACPI: found 4 devices
[ 1.302979][ T1] clocksource: acpi_pm: mask: 0xffffff max_cycles: 0xffffff, max_idle_ns: 2085701024 ns
[ 1.305047][ T1] pci 0000:00:01.0: can't claim BAR 6 [mem 0xffff0000-0xffffffff pref]: no compatible bridge window
[ 1.307280][ T1] pci 0000:00:04.0: can't claim BAR 6 [mem 0xfffc0000-0xffffffff pref]: no compatible bridge window
[ 1.309508][ T1] pci 0000:00:04.0: BAR 6: assigned [mem 0x90840000-0x9087ffff pref]
[ 1.311311][ T1] pci 0000:00:01.0: BAR 6: assigned [mem 0x90810000-0x9081ffff pref]
[ 1.313253][ T1] NET: Registered protocol family 2
[ 1.314524][ T1] tcp_listen_portaddr_hash hash table entries: 2048 (order: 3, 32768 bytes)
[ 1.316336][ T1] TCP established hash table entries: 32768 (order: 6, 262144 bytes)
[ 1.318146][ T1] TCP bind hash table entries: 32768 (order: 7, 524288 bytes)
[ 1.320021][ T1] TCP: Hash tables configured (established 32768 bind 32768)
[ 1.321795][ T1] UDP hash table entries: 2048 (order: 4, 65536 bytes)
[ 1.323416][ T1] UDP-Lite hash table entries: 2048 (order: 4, 65536 bytes)
[ 1.325156][ T1] NET: Registered protocol family 1
[ 1.326395][ T1] pci 0000:00:01.0: Video device with shadowed ROM at [mem 0x000c0000-0x000dffff]
[ 1.330045][ T1] PCI Interrupt Link [GSIA] enabled at IRQ 16
[ 1.334552][ T1] PCI Interrupt Link [GSIB] enabled at IRQ 17
[ 1.339024][ T1] PCI Interrupt Link [GSIC] enabled at IRQ 18
[ 1.343542][ T1] PCI Interrupt Link [GSID] enabled at IRQ 19
[ 1.346899][ T1] Unpacking initramfs...
[ 1.432913][ T1] Freeing initrd memory: 7472K
[ 1.434082][ T1] PCI-DMA: Using software bounce buffering for IO (SWIOTLB)
[ 1.435797][ T1] software IO TLB: mapped [mem 0x77f1e000-0x7bf1e000] (64MB)
[ 1.437560][ T1] check: Scanning for low memory corruption every 60 seconds
[ 1.460319][ T1] Initialise system trusted keyrings
[ 1.461696][ T1] workingset: timestamp_bits=46 max_order=20 bucket_order=0
[ 1.518477][ T1] Key type asymmetric registered
[ 1.519532][ T1] Asymmetric key parser 'x509' registered
[ 1.520972][ T1] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 251)
[ 1.522956][ T1] io scheduler bfq registered
[ 1.524490][ T1] hv_vmbus: registering driver hv_pci
[ 1.525614][ T1] hv_vmbus: registering driver hyperv_fb
[ 1.526792][ T1] efifb: probing for efifb
[ 1.527862][ T1] efifb: framebuffer at 0x90000000, using 1920k, total 1920k
[ 1.529478][ T1] efifb: mode is 800x600x32, linelength=3200, pages=1
[ 1.530942][ T1] efifb: scrolling: redraw
[ 1.531996][ T1] efifb: Truecolor: size=8:8:8:8, shift=24:16:8:0
[ 1.537144][ T1] Console: switching to colour frame buffer device 100x37
[ 1.541219][ T1] fb0: EFI VGA frame buffer device
[ 1.542408][ T1] input: Power Button as /devices/LNXSYSTM:00/LNXPWRBN:00/input/input0
[ 1.544343][ T1] ACPI: Power Button [PWRF]
[ 1.546957][ T1] PCI Interrupt Link [GSIF] enabled at IRQ 21
[ 1.550540][ T1] PCI Interrupt Link [GSIG] enabled at IRQ 22
[ 1.556323][ T1] PCI Interrupt Link [GSIH] enabled at IRQ 23
[ 1.559762][ T1] PCI Interrupt Link [GSIE] enabled at IRQ 20
[ 1.561923][ T1] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
[ 1.591484][ T1] 00:03: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a 16550A
[ 1.594903][ T802] random: fast init done
[ 1.595194][ T1] [drm] pci: virtio-vga detected at 0000:00:01.0
[ 1.596091][ T802] random: crng init done
[ 1.597492][ T1] fb0: switching to virtiodrmfb from EFI VGA
[ 1.599632][ T802] random: 715 get_random_xx warning(s) missed due to ratelimiting
[ 1.599683][ T1] Console: switching to colour dummy device 80x25
[ 1.603251][ T1] virtio-pci 0000:00:01.0: vgaarb: deactivate vga console
[ 1.604886][ T1] [drm] virgl 3d acceleration not supported by host
[ 1.607225][ T1] [TTM] Zone kernel: Available graphics memory: 2015852 kiB
[ 1.608923][ T1] [TTM] Initializing pool allocator
[ 1.610014][ T1] [TTM] Initializing DMA pool allocator
[ 1.611281][ T1] [drm] number of scanouts: 1
[ 1.612247][ T1] [drm] number of cap sets: 0
[ 1.613562][ T1] [drm] Initialized virtio_gpu 0.1.0 0 for virtio0 on minor 0
[ 1.639282][ T1] Console: switching to colour frame buffer device 239x71
[ 1.653449][ T1] virtio_gpu virtio0: fb0: DRM emulated frame buffer device
[ 1.667567][ T1] loop: module loaded
[ 1.669983][ T1] scsi host0: Virtio SCSI HBA
[ 1.677105][ T1] hv_vmbus: registering driver hv_storvsc
[ 1.677374][ T31] scsi 0:0:0:0: Direct-Access QEMU QEMU HARDDISK 2.5+ PQ: 0 ANSI: 5
[ 1.682109][ T1] hv_vmbus: registering driver hv_netvsc
[ 1.684312][ T1] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[ 1.686986][ T1] ehci-pci: EHCI PCI platform driver
[ 1.690599][ T1] ehci-pci 0000:00:1d.7: EHCI Host Controller
[ 1.692327][ T1] ehci-pci 0000:00:1d.7: new USB bus registered, assigned bus number 1
[ 1.694963][ T1] ehci-pci 0000:00:1d.7: irq 19, io mem 0x90801000
[ 1.706894][ C3] sd 0:0:0:0: Power-on or device reset occurred
[ 1.708559][ T31] sd 0:0:0:0: Attached scsi generic sg0 type 0
[ 1.710158][ T799] sd 0:0:0:0: [sda] 83886080 512-byte logical blocks: (42.9 GB/40.0 GiB)
[ 1.712103][ T799] sd 0:0:0:0: [sda] Write Protect is off
[ 1.713355][ T799] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 1.715452][ T799] sd 0:0:0:0: [sda] Optimal transfer size 0 bytes < PAGE_SIZE (4096 bytes)
[ 1.720368][ T799] sda: sda1 sda2 sda3
[ 1.721871][ T799] sd 0:0:0:0: [sda] Attached SCSI disk
[ 1.727039][ T1] ehci-pci 0000:00:1d.7: USB 2.0 started, EHCI 1.00
[ 1.728553][ T1] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 5.01
[ 1.730495][ T1] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 1.732141][ T1] usb usb1: Product: EHCI Host Controller
[ 1.733304][ T1] usb usb1: Manufacturer: Linux 5.1.0-rc2-ARCH-test2 ehci_hcd
[ 1.734817][ T1] usb usb1: SerialNumber: 0000:00:1d.7
[ 1.736158][ T1] hub 1-0:1.0: USB hub found
[ 1.737186][ T1] hub 1-0:1.0: 6 ports detected
[ 1.738526][ T1] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[ 1.740025][ T1] ohci-pci: OHCI PCI platform driver
[ 1.741224][ T1] uhci_hcd: USB Universal Host Controller Interface driver
[ 1.744888][ T1] uhci_hcd 0000:00:1d.0: UHCI Host Controller
[ 1.746360][ T1] uhci_hcd 0000:00:1d.0: new USB bus registered, assigned bus number 2
[ 1.748282][ T1] uhci_hcd 0000:00:1d.0: irq 16, io base 0x000060e0
[ 1.749789][ T1] usb usb2: New USB device found, idVendor=1d6b, idProduct=0001, bcdDevice= 5.01
[ 1.751760][ T1] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 1.753488][ T1] usb usb2: Product: UHCI Host Controller
[ 1.754684][ T1] usb usb2: Manufacturer: Linux 5.1.0-rc2-ARCH-test2 uhci_hcd
[ 1.756304][ T1] usb usb2: SerialNumber: 0000:00:1d.0
[ 1.757741][ T1] hub 2-0:1.0: USB hub found
[ 1.758739][ T1] hub 2-0:1.0: 2 ports detected
[ 1.761783][ T1] uhci_hcd 0000:00:1d.1: UHCI Host Controller
[ 1.763221][ T1] uhci_hcd 0000:00:1d.1: new USB bus registered, assigned bus number 3
[ 1.765224][ T1] uhci_hcd 0000:00:1d.1: irq 17, io base 0x000060c0
[ 1.766993][ T1] usb usb3: New USB device found, idVendor=1d6b, idProduct=0001, bcdDevice= 5.01
[ 1.769373][ T1] usb usb3: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 1.771396][ T1] usb usb3: Product: UHCI Host Controller
[ 1.772815][ T1] usb usb3: Manufacturer: Linux 5.1.0-rc2-ARCH-test2 uhci_hcd
[ 1.774705][ T1] usb usb3: SerialNumber: 0000:00:1d.1
[ 1.776204][ T1] hub 3-0:1.0: USB hub found
[ 1.777347][ T1] hub 3-0:1.0: 2 ports detected
[ 1.780691][ T1] uhci_hcd 0000:00:1d.2: UHCI Host Controller
[ 1.782216][ T1] uhci_hcd 0000:00:1d.2: new USB bus registered, assigned bus number 4
[ 1.784035][ T1] uhci_hcd 0000:00:1d.2: irq 18, io base 0x000060a0
[ 1.785520][ T1] usb usb4: New USB device found, idVendor=1d6b, idProduct=0001, bcdDevice= 5.01
[ 1.787502][ T1] usb usb4: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 1.789306][ T1] usb usb4: Product: UHCI Host Controller
[ 1.790572][ T1] usb usb4: Manufacturer: Linux 5.1.0-rc2-ARCH-test2 uhci_hcd
[ 1.792204][ T1] usb usb4: SerialNumber: 0000:00:1d.2
[ 1.793486][ T1] hub 4-0:1.0: USB hub found
[ 1.794507][ T1] hub 4-0:1.0: 2 ports detected
[ 1.795864][ T1] usbcore: registered new interface driver usb-storage
[ 1.797457][ T1] i8042: PNP: PS/2 Controller [PNP0303:KBD,PNP0f13:MOU] at 0x60,0x64 irq 1,12
[ 1.800204][ T1] serio: i8042 KBD port at 0x60,0x64 irq 1
[ 1.801465][ T1] serio: i8042 AUX port at 0x60,0x64 irq 12
[ 1.802769][ T1] hv_vmbus: registering driver hyperv_keyboard
[ 1.804135][ T1] mousedev: PS/2 mouse device common for all mice
[ 1.806248][ T320] input: AT Translated Set 2 keyboard as /devices/platform/i8042/serio0/input/input1
[ 1.807219][ T1] rtc_cmos 00:00: RTC can wake from S4
[ 1.811210][ T1] rtc_cmos 00:00: registered as rtc0
[ 1.813173][ T1] rtc_cmos 00:00: alarms up to one day, y3k, 114 bytes nvram, hpet irqs
[ 1.817914][ T1] i801_smbus 0000:00:1f.3: SMBus using PCI interrupt
[ 1.819572][ T1] hidraw: raw HID events driver (C) Jiri Kosina
[ 1.821063][ T1] hv_vmbus: registering driver hid_hyperv
[ 1.822432][ T1] usbcore: registered new interface driver usbhid
[ 1.823815][ T1] usbhid: USB HID core driver
[ 1.824817][ T1] hv_utils: Registering HyperV Utility Driver
[ 1.826225][ T1] hv_vmbus: registering driver hv_utils
[ 1.827705][ T1] hv_vmbus: registering driver hv_balloon
[ 1.829534][ T1] Initializing XFRM netlink socket
[ 1.831013][ T1] NET: Registered protocol family 10
[ 1.832693][ T1] Segment Routing with IPv6
[ 1.833713][ T1] NET: Registered protocol family 17
[ 1.834830][ T1] NET: Registered protocol family 15
[ 1.835983][ T1] bridge: filtering via arp/ip/ip6tables is no longer available by default. Update your scripts to load br_netfilter if you need this.
[ 1.839371][ T1] AVX version of gcm_enc/dec engaged.
[ 1.840504][ T1] AES CTR mode by8 optimization enabled
[ 1.862135][ T1] sched_clock: Marking stable (1666674337, 195447403)->(1888999479, -26877739)
[ 1.864868][ T1] Loading compiled-in X.509 certificates
[ 1.870537][ T1] Loaded X.509 cert 'Modules: 6658372c83ac517747ebb777f75c50d93800a9b7'
[ 1.873556][ T1] Btrfs loaded, crc32c=crc32c-intel
[ 1.874888][ T1] AppArmor: AppArmor sha1 policy hashing enabled
[ 1.876781][ T1] ALSA device list:
[ 1.877811][ T1] No soundcards found.
[ 1.879649][ T1] Freeing unused kernel image memory: 960K
[ 1.927138][ T1] Write protecting the kernel read-only data: 14336k
[ 1.929373][ T1] Freeing unused kernel image memory: 2036K
[ 1.930858][ T1] Freeing unused kernel image memory: 192K
[ 1.932450][ T1] x86/mm: Checked W+X mappings: passed, no W+X pages found.
[ 1.934098][ T1] x86/mm: Checking user space page tables
[ 1.935462][ T1] x86/mm: Checked W+X mappings: passed, no W+X pages found.
[ 1.937041][ T1] Run /init as init process
:: running early hook [udev]
Warning: /lib/modules/5.1.0-rc2-ARCH-test2/modules.devname not found - ignoring
Starting version 241.7-2-arch
:: running hook [udev]
:: Triggering uevents...
[ 2.117022][ T915] usb 1-1: new high-speed USB device number 2 using ehci-pci
[ 2.206261][ T1167] BTRFS: device label root devid 1 transid 503 /dev/sda3
[ 2.318833][ T915] usb 1-1: New USB device found, idVendor=0627, idProduct=0001, bcdDevice= 0.00
[ 2.321017][ T915] usb 1-1: New USB device strings: Mfr=1, Product=3, SerialNumber=5
[ 2.322948][ T915] usb 1-1: Product: QEMU USB Tablet
[ 2.324118][ T915] usb 1-1: Manufacturer: QEMU
[ 2.325256][ T915] usb 1-1: SerialNumber: 42
[ 2.329864][ T915] input: QEMU QEMU USB Tablet as /devices/pci0000:00/0000:00:1d.7/usb1/1-1/1-1:1.0/0003:0627:0001.0001/input/input4
[ 2.332760][ T915] hid-generic 0003:0627:0001.0001: input,hidraw0: USB HID v0.01 Mouse [QEMU QEMU USB Tablet] on usb-0000:00:1d.7-1/input0
:: performing fsck on '/dev/sda3'
:: mounting '/dev/sda3' on real root
[ 2.400759][ T1436] BTRFS info (device sda3): using free space tree
[ 2.402235][ T1436] BTRFS info (device sda3): has skinny extents
[ 2.438597][ T320] input: ImExPS/2 Generic Explorer Mouse as /devices/platform/i8042/serio1/input/input3
:: running cleanup hook [udev]
[ 3.096177][ T1] systemd[1]: Failed to find module 'autofs4'
[ 3.113775][ T1] systemd[1]: systemd 241.7-2-arch running in system mode. (+PAM +AUDIT -SELINUX -IMA -APPARMOR +SMACK -SYSVINIT +UTMP +LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL +XZ +LZ4 +SECCOMP +BLKID +ELFUTILS
+KMOD +IDN2 -IDN +PCRE2 default-hierarchy=hybrid)
[ 3.118856][ T1] systemd[1]: Detected virtualization kvm.
[ 3.120073][ T1] systemd[1]: Detected architecture x86-64.

Welcome to Arch Linux!

[ 3.136227][ T1] systemd[1]: Set hostname to <test>.
[ 3.608105][ T1] systemd[1]: Listening on Journal Audit Socket.
[ OK ] Listening on Journal Audit Socket.
[ 3.611457][ T1] systemd[1]: Listening on Device-mapper event daemon FIFOs.
[ OK ] Listening on Device-mapper event daemon FIFOs.
[ 3.615249][ T1] systemd[1]: Listening on LVM2 poll daemon socket.
[ OK ] Listening on LVM2 poll daemon socket.
[ 3.618199][ T1] systemd[1]: Listening on Journal Socket.
[ OK ] Listening on Journal Socket.
[ 3.620667][ T1] systemd[1]: Condition check resulted in Kernel Debug File System being skipped.
[ 3.622770][ T1] systemd[1]: Reached target Remote File Systems.
[ OK ] Reached target Remote File Systems.
[ OK ] Started Dispatch Password …ts to Console Directory Watch.
[ OK ] Listening on Process Core Dump Socket.
Starting Remount Root and Kernel File Systems...
[ OK ] Listening on Journal Socket (/dev/log).
Starting Journal Service...
[ OK ] Created slice system-getty.slice.
Starting Apply Kernel Variables...
[ OK ] Listening on Network Service Netlink Socket.
[ OK ] Created slice User and Session Slice.
[ OK ] Reached target Slices.
[ OK ] Listening on udev Control Socket.
[ OK ] Created slice system-serial\x2dgetty.slice.
[ OK ] Listening on LVM2 metadata daemon socket.
Starting Monitoring of LVM…meventd or progress polling...
[ OK ] Listening on initctl Compatibility Named Pipe.
Mounting POSIX Message Queue File System...
[ OK ] Started Forward Password R…uests to Wall Directory Watch.
[ OK ] Reached target Local Encrypted Volumes.
Mounting Huge Pages File System...
[ OK ] Reached target Paths.
[ 3.745118][ T1491] BTRFS info (device sda3): use zstd compression, level 3
[ 3.747055][ T1491] BTRFS info (device sda3): enabling auto defrag
[ 3.748464][ T1491] BTRFS info (device sda3): using free space tree
[ OK ] Listening on udev Kernel Socket.
Starting udev Coldplug all Devices...
[ OK ] Started Remount Root and Kernel File Systems.
[ OK ] Started Apply Kernel Variables.
[ OK ] Mounted POSIX Message Queue File System.
[ OK ] Mounted Huge Pages File System.
[ OK ] Started LVM2 metadata daemon.
Starting Load/Save Random Seed...
Starting Create Static Device Nodes in /dev...
[ OK ] Started Load/Save Random Seed.
[ OK ] Started Create Static Device Nodes in /dev.
Starting udev Kernel Device Manager...
[ OK ] Started udev Coldplug all Devices.
[ OK ] Started Journal Service.
[ 4.043735][ T34] audit: type=1130 audit(1553862768.584:2): pid=1 uid=0 auid=4294967295 ses=4294967295 subj==unconfined msg='unit=systemd-journald comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? ad
dr=? terminal=? res=success'
Starting Flush Journal to Persistent Storage...
[ 4.097598][ T1489] systemd-journald[1489]: Received request to flush runtime journal from PID 1
[ OK ] Started udev Kernel Device Manager.
[ 4.446329][ T34] audit: type=1130 audit(1553862768.984:3): pid=1 uid=0 auid=4294967295 ses=4294967295 subj==unconfined msg='unit=systemd-udevd comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=
? terminal=? res=success'
Starting Network Service...
[ OK ] Found device /dev/ttyS0.
[ 4.596099][ T1913] virtio_net virtio3 enp0s4: renamed from eth0
[ OK ] Started Flush Journal to Persistent Storage.
[ 4.675012][ T34] audit: type=1130 audit(1553862769.214:4): pid=1 uid=0 auid=4294967295 ses=4294967295 subj==unconfined msg='unit=systemd-journal-flush comm="systemd" exe="/usr/lib/systemd/systemd" hostname
=? addr=? terminal=? res=success'
[ OK ] Found device QEMU_HARDDISK 2.
[ 4.911481][ T1907] A link change request failed with some changes committed already. Interface enp0s4 may have been left with an inconsistent configuration, please check.
[ OK ] Found device QEMU_HARDDISK 1.
[ OK ] Started Network Service.
[ 4.925070][ T34] audit: type=1130 audit(1553862769.464:5): pid=1 uid=0 auid=4294967295 ses=4294967295 subj==unconfined msg='unit=systemd-networkd comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? ad
dr=? terminal=? res=success'
[ OK ] Reached target Network.
Activating swap /dev/disk/…8ab3-414f-b6ac-91e0e904eb08...
[ 5.045388][ T1939] Adding 4194300k swap on /dev/sda2. Priority:-2 extents:1 across:4194300k
[ OK ] Activated swap /dev/disk/b…8-8ab3-414f-b6ac-91e0e904eb08.
[ OK ] Reached target Swap.
Mounting Temporary Directory (/tmp)...
[ OK ] Mounted Temporary Directory (/tmp).
[ OK ] Started Monitoring of LVM2… dmeventd or progress polling.
[ 5.181607][ T34] audit: type=1130 audit(1553862769.724:6): pid=1 uid=0 auid=4294967295 ses=4294967295 subj==unconfined msg='unit=lvm2-monitor comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=?
terminal=? res=success'
[ OK ] Reached target Local File Systems (Pre).
Mounting /boot...
[ 5.195003][ T1941] FAT-fs (sda1): Volume was not properly unmounted. Some data may be corrupt. Please run fsck.
[ OK ] Mounted /boot.
[ OK ] Reached target Local File Systems.
Starting Create Volatile Files and Directories...
[ OK ] Started Create Volatile Files and Directories.
[ 5.257618][ T34] audit: type=1130 audit(1553862769.804:7): pid=1 uid=0 auid=4294967295 ses=4294967295 subj==unconfined msg='unit=systemd-tmpfiles-setup comm="systemd" exe="/usr/lib/systemd/systemd" hostnam
e=? addr=? terminal=? res=success'
Starting Update UTMP about System Boot/Shutdown...
[ 5.268333][ T34] audit: type=1127 audit(1553862769.814:8): pid=1943 uid=0 auid=4294967295 ses=4294967295 subj==unconfined msg=' comm="systemd-update-utmp" exe="/usr/lib/systemd/systemd-update-utmp" hostnam
e=? addr=? terminal=? res=success'
[ OK ] Started Update UTMP about System Boot/Shutdown.
[ 5.275548][ T34] audit: type=1130 audit(1553862769.814:9): pid=1 uid=0 auid=4294967295 ses=4294967295 subj==unconfined msg='unit=systemd-update-utmp comm="systemd" exe="/usr/lib/systemd/systemd" hostname=?
addr=? terminal=? res=success'
[ OK ] Reached target System Initialization.
[ OK ] Started Daily verification of password and group files.
[ OK ] Started Daily Cleanup of Temporary Directories.
[ OK ] Started Daily rotation of log files.
[ OK ] Started Daily man-db regeneration.
[ OK ] Reached target Timers.
[ OK ] Listening on D-Bus System Message Bus Socket.
[ OK ] Reached target Sockets.
[ OK ] Reached target Basic System.
Starting Permit User Sessions...
[ OK ] Started D-Bus System Message Bus.
[ 5.304923][ T34] audit: type=1130 audit(1553862769.844:10): pid=1 uid=0 auid=4294967295 ses=4294967295 subj==unconfined msg='unit=dbus comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? termin
al=? res=success'
Starting Login Service...
[ OK ] Started OpenSSH Daemon.
[ OK ] Started Permit User Sessions.
[ OK ] Started Getty on tty1.
[ OK ] Started Serial Getty on ttyS0.
[ OK ] Reached target Login Prompts.
[ OK ] Started Login Service.
[ OK ] Reached target Multi-User System.
[ OK ] Reached target Graphical Interface.

Arch Linux 5.1.0-rc2-ARCH-test2 (ttyS0)

test login: [ 11.281974][ T34] kauditd_printk_skb: 5 callbacks suppressed
[ 11.281975][ T34] audit: type=1006 audit(1553862775.824:16): pid=1965 uid=0 subj==unconfined old-auid=4294967295 auid=0 tty=(none) old-ses=4294967295 ses=1 res=1
[ 11.315508][ T34] audit: type=1130 audit(1553862775.854:17): pid=1 uid=0 auid=4294967295 ses=4294967295 subj==unconfined msg='unit=user-runtime-dir@0 comm="systemd" exe="/usr/lib/systemd/systemd" hostname=?
addr=? terminal=? res=success'
[ 11.324377][ T34] audit: type=1006 audit(1553862775.864:18): pid=1968 uid=0 subj==unconfined old-auid=4294967295 auid=0 tty=(none) old-ses=4294967295 ses=2 res=1
[ 11.418557][ T34] audit: type=1130 audit(1553862775.964:19): pid=1 uid=0 auid=4294967295 ses=4294967295 subj==unconfined msg='unit=user@0 comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? term
inal=? res=success'
[ 32.837998][ T1975] bash (1975): drop_caches: 3
[ 32.840195][ T1975] bash (1975): drop_caches: 3
[ 39.935663][ T1975] bash (1975): drop_caches: 3
[ 41.034974][ C0] general protection fault: 0000 [#1] SMP PTI
[ 41.036291][ C0] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G T 5.1.0-rc2-ARCH-test2 #4
[ 41.038287][ C0] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 0.0.0 02/06/2015
[ 41.040235][ C0] RIP: 0010:bfq_bfqq_expire+0x1f3/0x3d0
[ 41.041455][ C0] Code: 01 00 00 00 00 00 00 a8 02 75 3c 41 83 ec 01 41 83 fc 01 76 32 48 0f ba ab 08 01 00 00 03 48 8b 83 c8 00 00 00 48 85 c0 74 07 <c7> 40 40 00 00 00 00 5b 5d 41 5c 41 5d 41 5e c3 e8 e8
42 d3 ff 48
[ 41.045818][ C0] RSP: 0018:ffffa1d87ba03ed0 EFLAGS: 00010002
[ 41.047207][ C0] RAX: 6b6b6b6b6b6b6b6b RBX: ffffa1d87a2c27c8 RCX: 000000000010000c
[ 41.049022][ C0] RDX: 0000000000000046 RSI: 0000000000000000 RDI: ffffa1d87ab13c40
[ 41.050907][ C0] RBP: ffffa1d879434e68 R08: 0000000000000000 R09: ffffa1d87a2c2900
[ 41.052751][ C0] R10: ffffa1d87a2c27c8 R11: 0000000000000001 R12: 0000000000000000
[ 41.054631][ C0] R13: 0000000000000002 R14: ffffa1d879434e00 R15: ffffa1d87ba1b340
[ 41.056313][ C0] FS: 0000000000000000(0000) GS:ffffa1d87ba00000(0000) knlGS:0000000000000000
[ 41.058442][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 41.059804][ C0] CR2: 00006ffc44000010 CR3: 00000001774be000 CR4: 00000000000406b0
[ 41.061536][ C0] Call Trace:
[ 41.062291][ C0] <IRQ>
[ 41.062882][ C0] bfq_idle_slice_timer+0x5f/0xb0
[ 41.063924][ C0] ? bfq_dispatch_request+0x870/0x870
[ 41.065034][ C0] __hrtimer_run_queues+0xf4/0x1a0
[ 41.066091][ C0] hrtimer_interrupt+0xfe/0x220
[ 41.067096][ C0] smp_apic_timer_interrupt+0x57/0x90
[ 41.068209][ C0] apic_timer_interrupt+0xf/0x20
[ 41.069269][ C0] </IRQ>
[ 41.069909][ C0] RIP: 0010:default_idle+0x9/0x20
[ 41.070947][ C0] Code: 01 00 00 00 00 ad de 48 89 44 24 20 48 05 00 01 00 00 48 89 44 24 28 eb c5 e8 43 b7 8a ff 90 90 90 65 8b 05 d9 5b c1 6b fb f4 <65> 8b 05 d0 5b c1 6b c3 66 66 2e 0f 1f 84 00 00 00 00
00 0f 1f 40
[ 41.075110][ C0] RSP: 0018:ffffffff94a03ee0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
[ 41.076855][ C0] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[ 41.078619][ C0] RDX: 0000000000005e66 RSI: 0000000000000083 RDI: 0000000000000000
[ 41.080255][ C0] RBP: ffffffff94a77a70 R08: 0000000000001400 R09: 0000000000000000
[ 41.081898][ C0] R10: 0000000000000000 R11: 000000000000025f R12: ffffffff94a154c0
[ 41.083589][ C0] R13: ffffa1d87fff7a00 R14: 000000007bcd65a8 R15: 000000007e797c3e
[ 41.085238][ C0] do_idle+0xd1/0xf0
[ 41.086044][ C0] cpu_startup_entry+0x14/0x20
[ 41.087029][ C0] start_kernel+0x44d/0x46d
[ 41.087956][ C0] secondary_startup_64+0xa4/0xb0
[ 41.089076][ C0] Modules linked in:
[ 41.089984][ C0] ---[ end trace 0e0bd22bb3439150 ]---
[ 41.091187][ C0] RIP: 0010:bfq_bfqq_expire+0x1f3/0x3d0
[ 41.092390][ C0] Code: 01 00 00 00 00 00 00 a8 02 75 3c 41 83 ec 01 41 83 fc 01 76 32 48 0f ba ab 08 01 00 00 03 48 8b 83 c8 00 00 00 48 85 c0 74 07 <c7> 40 40 00 00 00 00 5b 5d 41 5c 41 5d 41 5e c3 e8 e8
42 d3 ff 48
[ 41.096757][ C0] RSP: 0018:ffffa1d87ba03ed0 EFLAGS: 00010002
[ 41.098012][ C0] RAX: 6b6b6b6b6b6b6b6b RBX: ffffa1d87a2c27c8 RCX: 000000000010000c
[ 41.099755][ C0] RDX: 0000000000000046 RSI: 0000000000000000 RDI: ffffa1d87ab13c40
[ 41.101418][ C0] RBP: ffffa1d879434e68 R08: 0000000000000000 R09: ffffa1d87a2c2900
[ 41.103112][ C0] R10: ffffa1d87a2c27c8 R11: 0000000000000001 R12: 0000000000000000
[ 41.104841][ C0] R13: 0000000000000002 R14: ffffa1d879434e00 R15: ffffa1d87ba1b340
[ 41.106480][ C0] FS: 0000000000000000(0000) GS:ffffa1d87ba00000(0000) knlGS:0000000000000000
[ 41.108319][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 41.109787][ C0] CR2: 00006ffc44000010 CR3: 00000001774be000 CR4: 00000000000406b0
[ 41.111502][ C0] Kernel panic - not syncing: Fatal exception in interrupt
[ 41.113187][ C0] Kernel Offset: 0x12c00000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff)

[-- Attachment #3: bisect-log.txt --]
[-- Type: text/plain, Size: 2825 bytes --]

git bisect start
# bad: [9e98c678c2d6ae3a17cb2de55d17f69dddaa231b] Linux 5.1-rc1
git bisect bad 9e98c678c2d6ae3a17cb2de55d17f69dddaa231b
# good: [1c163f4c7b3f621efff9b28a47abb36f7378d783] Linux 5.0
git bisect good 1c163f4c7b3f621efff9b28a47abb36f7378d783
# good: [e266ca36da7de45b64b05698e98e04b578a88888] Merge tag 'staging-5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
git bisect good e266ca36da7de45b64b05698e98e04b578a88888
# bad: [36011ddc78395b59a8a418c37f20bcc18828f1ef] Merge tag 'gfs2-5.1.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2
git bisect bad 36011ddc78395b59a8a418c37f20bcc18828f1ef
# good: [4b057e73f28f1df13b77b77a52094238ffdf8abd] Merge tag 'drm-misc-fixes-2019-02-22' of git://anongit.freedesktop.org/drm/drm-misc into drm-next
git bisect good 4b057e73f28f1df13b77b77a52094238ffdf8abd
# good: [610cd4eadec4f97acd25d3108b0e50d1362b3319] Merge branch 'x86-uv-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
git bisect good 610cd4eadec4f97acd25d3108b0e50d1362b3319
# good: [cf2e8c544cd3b33e9e403b7b72404c221bf888d1] Merge tag 'mfd-next-5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd
git bisect good cf2e8c544cd3b33e9e403b7b72404c221bf888d1
# bad: [80201fe175cbf7f3e372f53eba0a881a702ad926] Merge tag 'for-5.1/block-20190302' of git://git.kernel.dk/linux-block
git bisect bad 80201fe175cbf7f3e372f53eba0a881a702ad926
# good: [4221b807d1f73c03d22543416d303b60a5d1ef31] Merge tag 'for-5.1/libata-20190301' of git://git.kernel.dk/linux-block
git bisect good 4221b807d1f73c03d22543416d303b60a5d1ef31
# bad: [19d62f6d00972f957c94aba0975c14490cfed385] block: remove bvec_iter_rewind()
git bisect bad 19d62f6d00972f957c94aba0975c14490cfed385
# bad: [e8cf978dffb2c603340d4615eec2e5358c9df06d] bcache: fix indentation issue, remove tabs on a hunk of code
git bisect bad e8cf978dffb2c603340d4615eec2e5358c9df06d
# bad: [058fdecc6de7cdecbf4c59b851e80eb2d6c5295f] block, bfq: fix in-service-queue check for queue merging
git bisect bad 058fdecc6de7cdecbf4c59b851e80eb2d6c5295f
# good: [05c2f5c30b3ca2346a5bb7c74b0c9515d8f4fbd2] block, bfq: split function bfq_better_to_idle
git bisect good 05c2f5c30b3ca2346a5bb7c74b0c9515d8f4fbd2
# bad: [9dee8b3b057e1da26f85f1842f2aaf3bb200fb94] block, bfq: fix queue removal from weights tree
git bisect bad 9dee8b3b057e1da26f85f1842f2aaf3bb200fb94
# good: [530c4cbb3c62f9e42dbf39279fb346f2d2ab4dbb] block, bfq: unconditionally plug I/O in asymmetric scenarios
git bisect good 530c4cbb3c62f9e42dbf39279fb346f2d2ab4dbb
# good: [d87447d84fe194b0e4f5413b5344dc82cc100711] block, bfq: fix sequential rq detection in rate estimation
git bisect good d87447d84fe194b0e4f5413b5344dc82cc100711
# first bad commit: [9dee8b3b057e1da26f85f1842f2aaf3bb200fb94] block, bfq: fix queue removal from weights tree