Kernel oops when unplugging UVC webcam

[Alexander Monakov]

Hello!

My laptop has a "hardwired" button that disconnects its webcam from USB.
I've noticed the following kernel NULL pointer dereference when unplugging
the webcam that way while an application is grabbing frames:

usb 1-1.4: USB disconnect, device number 3
uvcvideo 1-1.4:1.1: Failed to resubmit video URB (-19).
BUG: kernel NULL pointer dereference, address: 0000000000000000
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 0 P4D 0 
Oops: 0000 [#1] SMP
CPU: 4 PID: 3335 Comm: mpv/demux Not tainted 5.12.2 #73
Hardware name: Micro-Star International Co., Ltd. GE60 0NC/MS-16GA, BIOS E16GAIMS.105 03/28/2012
RIP: 0010:usb_ifnum_to_if+0x35/0x50
Code: [snip]
[snip registers]
Call Trace:
 usb_set_interface+0x2c/0x280
 uvc_video_stop_streaming+0x2f/0x80
 uvc_stop_streaming+0x16/0x40
 __vb2_queue_cancel+0x23/0x1e0
 vb2_core_queue_release+0x1a/0x40
 uvc_queue_release+0x1d/0x30
 uvc_v4l2_release+0x9d/0xd0
 v4l2_release+0xaa/0xb0
 __fput+0x84/0x220
 task_work_run+0x57/0x90
 exit_to_user_mode_prepare+0x100/0x110
 syscall_exit_to_user_mode+0x1d/0x40
 entry_SYSCALL_64_after_hwframe+0x44/0xae


This does not seem to be reproducible, so perhaps a race is involved.
Complete dmesg is attached.

Thanks.
Alexander[    0.000000] microcode: microcode updated early to revision 0x1f, date = 2018-02-07
[    0.000000] Linux version 5.12.2 (monoid@ricercar) (gcc (Gentoo 9.2.0-r3 p4) 9.2.0, GNU ld (Gentoo 2.33.1 p2) 2.33.1) #73 SMP Mon May 10 22:57:52 MSK 2021
[    0.000000] Command line: BOOT_IMAGE=/boot/vmlinuz root=/dev/sdb2 ro pcie_port_pm=force pcie_ports=native
[    0.000000] KERNEL supported cpus:
[    0.000000]   Intel GenuineIntel
[    0.000000] x86/fpu: Supporting XSAVE feature 0x001: 'x87 floating point registers'
[    0.000000] x86/fpu: Supporting XSAVE feature 0x002: 'SSE registers'
[    0.000000] x86/fpu: Supporting XSAVE feature 0x004: 'AVX registers'
[    0.000000] x86/fpu: xstate_offset[2]:  576, xstate_sizes[2]:  256
[    0.000000] x86/fpu: Enabled xstate features 0x7, context size is 832 bytes, using 'standard' format.
[    0.000000] BIOS-provided physical RAM map:
[    0.000000] BIOS-e820: [mem 0x0000000000000000-0x000000000009d7ff] usable
[    0.000000] BIOS-e820: [mem 0x000000000009d800-0x000000000009ffff] reserved
[    0.000000] BIOS-e820: [mem 0x00000000000e0000-0x00000000000fffff] reserved
[    0.000000] BIOS-e820: [mem 0x0000000000100000-0x000000001fffffff] usable
[    0.000000] BIOS-e820: [mem 0x0000000020000000-0x00000000201fffff] reserved
[    0.000000] BIOS-e820: [mem 0x0000000020200000-0x0000000040003fff] usable
[    0.000000] BIOS-e820: [mem 0x0000000040004000-0x0000000040004fff] reserved
[    0.000000] BIOS-e820: [mem 0x0000000040005000-0x00000000c9e65fff] usable
[    0.000000] BIOS-e820: [mem 0x00000000c9e66000-0x00000000ca419fff] reserved
[    0.000000] BIOS-e820: [mem 0x00000000ca41a000-0x00000000ca699fff] ACPI NVS
[    0.000000] BIOS-e820: [mem 0x00000000ca69a000-0x00000000ca69efff] ACPI data
[    0.000000] BIOS-e820: [mem 0x00000000ca69f000-0x00000000ca6e1fff] ACPI NVS
[    0.000000] BIOS-e820: [mem 0x00000000ca6e2000-0x00000000cadcafff] usable
[    0.000000] BIOS-e820: [mem 0x00000000cadcb000-0x00000000caff2fff] reserved
[    0.000000] BIOS-e820: [mem 0x00000000caff3000-0x00000000caffffff] usable
[    0.000000] BIOS-e820: [mem 0x00000000cb800000-0x00000000cf9fffff] reserved
[    0.000000] BIOS-e820: [mem 0x00000000f8000000-0x00000000fbffffff] reserved
[    0.000000] BIOS-e820: [mem 0x00000000fec00000-0x00000000fec00fff] reserved
[    0.000000] BIOS-e820: [mem 0x00000000fed00000-0x00000000fed03fff] reserved
[    0.000000] BIOS-e820: [mem 0x00000000fed1c000-0x00000000fed1ffff] reserved
[    0.000000] BIOS-e820: [mem 0x00000000fee00000-0x00000000fee00fff] reserved
[    0.000000] BIOS-e820: [mem 0x00000000ff000000-0x00000000ffffffff] reserved
[    0.000000] BIOS-e820: [mem 0x0000000100000000-0x00000001af5fffff] usable
[    0.000000] NX (Execute Disable) protection: active
[    0.000000] SMBIOS 2.7 present.
[    0.000000] DMI: Micro-Star International Co., Ltd. GE60 0NC/MS-16GA, BIOS E16GAIMS.105 03/28/2012
[    0.000000] tsc: Fast TSC calibration using PIT
[    0.000000] tsc: Detected 2294.658 MHz processor
[    0.001300] e820: update [mem 0x00000000-0x00000fff] usable ==> reserved
[    0.001304] e820: remove [mem 0x000a0000-0x000fffff] usable
[    0.001312] last_pfn = 0x1af600 max_arch_pfn = 0x400000000
[    0.001434] x86/PAT: Configuration [0-7]: WB  WC  UC- UC  WB  WP  UC- WT  
[    0.002636] e820: update [mem 0xcb800000-0xffffffff] usable ==> reserved
[    0.002643] last_pfn = 0xcb000 max_arch_pfn = 0x400000000
[    0.003708] RAMDISK: [mem 0x37fd6000-0x37fe2fff]
[    0.003717] ACPI: SSDT ACPI table found in initrd [kernel/firmware/acpi/ssdt3.aml][0x1504]
[    0.003759] ACPI: DSDT ACPI table found in initrd [kernel/firmware/acpi/dsdt.aml][0xaeeb]
[    0.003768] modified physical RAM map:
[    0.003769] modified: [mem 0x0000000000000000-0x0000000000000fff] reserved
[    0.003771] modified: [mem 0x0000000000001000-0x000000000009d7ff] usable
[    0.003774] modified: [mem 0x000000000009d800-0x000000000009ffff] reserved
[    0.003775] modified: [mem 0x00000000000e0000-0x00000000000fffff] reserved
[    0.003777] modified: [mem 0x0000000000100000-0x000000001fffffff] usable
[    0.003779] modified: [mem 0x0000000020000000-0x00000000201fffff] reserved
[    0.003781] modified: [mem 0x0000000020200000-0x0000000040003fff] usable
[    0.003783] modified: [mem 0x0000000040004000-0x0000000040004fff] reserved
[    0.003785] modified: [mem 0x0000000040005000-0x00000000c9e65fff] usable
[    0.003787] modified: [mem 0x00000000c9e66000-0x00000000ca419fff] reserved
[    0.003788] modified: [mem 0x00000000ca41a000-0x00000000ca699fff] ACPI NVS
[    0.003790] modified: [mem 0x00000000ca69a000-0x00000000ca69efff] ACPI data
[    0.003792] modified: [mem 0x00000000ca69f000-0x00000000ca6e1fff] ACPI NVS
[    0.003794] modified: [mem 0x00000000ca6e2000-0x00000000cadcafff] usable
[    0.003796] modified: [mem 0x00000000cadcb000-0x00000000caff2fff] reserved
[    0.003798] modified: [mem 0x00000000caff3000-0x00000000cafff3ee] ACPI data
[    0.003799] modified: [mem 0x00000000cafff3ef-0x00000000caffffff] usable
[    0.003801] modified: [mem 0x00000000cb800000-0x00000000cf9fffff] reserved
[    0.003803] modified: [mem 0x00000000f8000000-0x00000000fbffffff] reserved
[    0.003805] modified: [mem 0x00000000fec00000-0x00000000fec00fff] reserved
[    0.003807] modified: [mem 0x00000000fed00000-0x00000000fed03fff] reserved
[    0.003808] modified: [mem 0x00000000fed1c000-0x00000000fed1ffff] reserved
[    0.003810] modified: [mem 0x00000000fee00000-0x00000000fee00fff] reserved
[    0.003812] modified: [mem 0x00000000ff000000-0x00000000ffffffff] reserved
[    0.003814] modified: [mem 0x0000000100000000-0x00000001af5fffff] usable
[    0.003826] ACPI: Early table checksum verification disabled
[    0.003829] ACPI: RSDP 0x00000000000F0450 000024 (v02 MSI_NB)
[    0.003833] ACPI: XSDT 0x00000000CA64D078 000074 (v01 MSI_NB MEGABOOK 01072009 AMI  00010013)
[    0.003840] ACPI: FACP 0x00000000CA657FD0 0000F4 (v04 MSI_NB MEGABOOK 01072009 AMI  00010013)
[    0.003847] ACPI: Table Upgrade: override [DSDT-MSI_NB-MEGABOOK]
[    0.003850] ACPI: DSDT 0x00000000CA64D188 Physical table override, new table: 0x00000000CAFF4504
[    0.003853] ACPI: DSDT 0x00000000CAFF4504 00AEEB (v02 MSI_NB MEGABOOK 00000016 INTL 20200326)
[    0.003858] ACPI: FACS 0x00000000CA698F80 000040
[    0.003862] ACPI: APIC 0x00000000CA6580C8 000092 (v03 MSI_NB MEGABOOK 01072009 AMI  00010013)
[    0.003866] ACPI: MCFG 0x00000000CA658160 00003C (v01 MSI_NB MEGABOOK 01072009 MSFT 00000097)
[    0.003871] ACPI: SLIC 0x00000000CA6581A0 000176 (v01 MSI_NB MEGABOOK 01072009 AMI  00010013)
[    0.003875] ACPI: HPET 0x00000000CA658318 000038 (v01 MSI_NB MEGABOOK 01072009 AMI. 00000005)
[    0.003880] ACPI: SSDT 0x00000000CA658350 00036D (v01 SataRe SataTabl 00001000 INTL 20091112)
[    0.003884] ACPI: SSDT 0x00000000CA6586C0 000920 (v01 PmRef  Cpu0Ist  00003000 INTL 20051117)
[    0.003889] ACPI: SSDT 0x00000000CA658FE0 000A92 (v01 PmRef  CpuPm    00003000 INTL 20051117)
[    0.003894] ACPI: SSDT 0x00000000CA659A78 00077B (v01 SgRef  SgTabl   00001000 INTL 20051117)
[    0.003898] ACPI: Table Upgrade: override [SSDT-OptRef- OptTabl]
[    0.003900] ACPI: SSDT 0x00000000CA65A1F8 Physical table override, new table: 0x00000000CAFF3000
[    0.003903] ACPI: SSDT 0x00000000CAFF3000 001504 (v01 OptRef OptTabl  00001001 INTL 20171215)
[    0.003906] ACPI: Reserving FACP table memory at [mem 0xca657fd0-0xca6580c3]
[    0.003909] ACPI: Reserving DSDT table memory at [mem 0xcaff4504-0xcafff3ee]
[    0.003910] ACPI: Reserving FACS table memory at [mem 0xca698f80-0xca698fbf]
[    0.003911] ACPI: Reserving APIC table memory at [mem 0xca6580c8-0xca658159]
[    0.003913] ACPI: Reserving MCFG table memory at [mem 0xca658160-0xca65819b]
[    0.003914] ACPI: Reserving SLIC table memory at [mem 0xca6581a0-0xca658315]
[    0.003915] ACPI: Reserving HPET table memory at [mem 0xca658318-0xca65834f]
[    0.003917] ACPI: Reserving SSDT table memory at [mem 0xca658350-0xca6586bc]
[    0.003918] ACPI: Reserving SSDT table memory at [mem 0xca6586c0-0xca658fdf]
[    0.003920] ACPI: Reserving SSDT table memory at [mem 0xca658fe0-0xca659a71]
[    0.003921] ACPI: Reserving SSDT table memory at [mem 0xca659a78-0xca65a1f2]
[    0.003922] ACPI: Reserving SSDT table memory at [mem 0xcaff3000-0xcaff4503]
[    0.003933] ACPI: Local APIC address 0xfee00000
[    0.003951] Zone ranges:
[    0.003952]   DMA      [mem 0x0000000000001000-0x0000000000ffffff]
[    0.003954]   DMA32    [mem 0x0000000001000000-0x00000000ffffffff]
[    0.003956]   Normal   [mem 0x0000000100000000-0x00000001af5fffff]
[    0.003958] Movable zone start for each node
[    0.003959] Early memory node ranges
[    0.003960]   node   0: [mem 0x0000000000001000-0x000000000009cfff]
[    0.003962]   node   0: [mem 0x0000000000100000-0x000000001fffffff]
[    0.003964]   node   0: [mem 0x0000000020200000-0x0000000040003fff]
[    0.003965]   node   0: [mem 0x0000000040005000-0x00000000c9e65fff]
[    0.003966]   node   0: [mem 0x00000000ca6e2000-0x00000000cadcafff]
[    0.003968]   node   0: [mem 0x00000000caff3000-0x00000000caffffff]
[    0.003969]   node   0: [mem 0x0000000100000000-0x00000001af5fffff]
[    0.003971] Initmem setup node 0 [mem 0x0000000000001000-0x00000001af5fffff]
[    0.003973] On node 0 totalpages: 1546487
[    0.003975]   DMA zone: 64 pages used for memmap
[    0.003976]   DMA zone: 21 pages reserved
[    0.003977]   DMA zone: 3996 pages, LIFO batch:0
[    0.004263]   DMA zone: 28772 pages in unavailable ranges
[    0.004265]   DMA32 zone: 12878 pages used for memmap
[    0.004266]   DMA32 zone: 824155 pages, LIFO batch:63
[    0.010880]   DMA32 zone: 23717 pages in unavailable ranges
[    0.010886]   Normal zone: 11224 pages used for memmap
[    0.010887]   Normal zone: 718336 pages, LIFO batch:63
[    0.016656]   Normal zone: 2560 pages in unavailable ranges
[    0.016680] Reserving Intel graphics memory at [mem 0xcba00000-0xcf9fffff]
[    0.016917] ACPI: PM-Timer IO Port: 0x408
[    0.016919] ACPI: Local APIC address 0xfee00000
[    0.016926] ACPI: LAPIC_NMI (acpi_id[0xff] high edge lint[0x1])
[    0.016937] IOAPIC[0]: apic_id 2, version 32, address 0xfec00000, GSI 0-23
[    0.016940] ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
[    0.016943] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
[    0.016945] ACPI: IRQ0 used by override.
[    0.016947] ACPI: IRQ9 used by override.
[    0.016949] Using ACPI (MADT) for SMP configuration information
[    0.016950] ACPI: HPET id: 0x8086a701 base: 0xfed00000
[    0.016954] TSC deadline timer available
[    0.016956] smpboot: Allowing 8 CPUs, 0 hotplug CPUs
[    0.016977] PM: hibernation: Registered nosave memory: [mem 0x00000000-0x00000fff]
[    0.016980] PM: hibernation: Registered nosave memory: [mem 0x0009d000-0x0009dfff]
[    0.016982] PM: hibernation: Registered nosave memory: [mem 0x0009e000-0x0009ffff]
[    0.016983] PM: hibernation: Registered nosave memory: [mem 0x000a0000-0x000dffff]
[    0.016984] PM: hibernation: Registered nosave memory: [mem 0x000e0000-0x000fffff]
[    0.016986] PM: hibernation: Registered nosave memory: [mem 0x20000000-0x201fffff]
[    0.016988] PM: hibernation: Registered nosave memory: [mem 0x40004000-0x40004fff]
[    0.016991] PM: hibernation: Registered nosave memory: [mem 0xc9e66000-0xca419fff]
[    0.016992] PM: hibernation: Registered nosave memory: [mem 0xca41a000-0xca699fff]
[    0.016993] PM: hibernation: Registered nosave memory: [mem 0xca69a000-0xca69efff]
[    0.016994] PM: hibernation: Registered nosave memory: [mem 0xca69f000-0xca6e1fff]
[    0.016996] PM: hibernation: Registered nosave memory: [mem 0xcadcb000-0xcaff2fff]
[    0.016997] PM: hibernation: Registered nosave memory: [mem 0xcaff3000-0xcaffefff]
[    0.016999] PM: hibernation: Registered nosave memory: [mem 0xcafff000-0xcaffffff]
[    0.017000] PM: hibernation: Registered nosave memory: [mem 0xcb000000-0xcb7fffff]
[    0.017001] PM: hibernation: Registered nosave memory: [mem 0xcb800000-0xcf9fffff]
[    0.017002] PM: hibernation: Registered nosave memory: [mem 0xcfa00000-0xf7ffffff]
[    0.017003] PM: hibernation: Registered nosave memory: [mem 0xf8000000-0xfbffffff]
[    0.017004] PM: hibernation: Registered nosave memory: [mem 0xfc000000-0xfebfffff]
[    0.017006] PM: hibernation: Registered nosave memory: [mem 0xfec00000-0xfec00fff]
[    0.017007] PM: hibernation: Registered nosave memory: [mem 0xfec01000-0xfecfffff]
[    0.017008] PM: hibernation: Registered nosave memory: [mem 0xfed00000-0xfed03fff]
[    0.017009] PM: hibernation: Registered nosave memory: [mem 0xfed04000-0xfed1bfff]
[    0.017010] PM: hibernation: Registered nosave memory: [mem 0xfed1c000-0xfed1ffff]
[    0.017011] PM: hibernation: Registered nosave memory: [mem 0xfed20000-0xfedfffff]
[    0.017013] PM: hibernation: Registered nosave memory: [mem 0xfee00000-0xfee00fff]
[    0.017014] PM: hibernation: Registered nosave memory: [mem 0xfee01000-0xfeffffff]
[    0.017015] PM: hibernation: Registered nosave memory: [mem 0xff000000-0xffffffff]
[    0.017017] [mem 0xcfa00000-0xf7ffffff] available for PCI devices
[    0.017020] clocksource: refined-jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 6370452778343963 ns
[    0.022556] setup_percpu: NR_CPUS:8 nr_cpumask_bits:8 nr_cpu_ids:8 nr_node_ids:1
[    0.022776] percpu: Embedded 53 pages/cpu s176664 r8192 d32232 u262144
[    0.022784] pcpu-alloc: s176664 r8192 d32232 u262144 alloc=1*2097152
[    0.022786] pcpu-alloc: [0] 0 1 2 3 4 5 6 7 
[    0.022810] Built 1 zonelists, mobility grouping on.  Total pages: 1522300
[    0.022813] Kernel command line: console=tty8 BOOT_IMAGE=/boot/vmlinuz root=/dev/sdb2 ro pcie_port_pm=force pcie_ports=native
[    0.023381] Dentry cache hash table entries: 1048576 (order: 11, 8388608 bytes, linear)
[    0.023628] Inode-cache hash table entries: 524288 (order: 10, 4194304 bytes, linear)
[    0.023706] mem auto-init: stack:off, heap alloc:off, heap free:off
[    0.044541] Memory: 5978256K/6185948K available (14347K kernel code, 2175K rwdata, 3416K rodata, 992K init, 680K bss, 207436K reserved, 0K cma-reserved)
[    0.044588] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=8, Nodes=1
[    0.044670] rcu: Hierarchical RCU implementation.
[    0.044671] rcu: 	RCU dyntick-idle grace-period acceleration is enabled.
[    0.044673] 	Tracing variant of Tasks RCU enabled.
[    0.044674] rcu: RCU calculated value of scheduler-enlistment delay is 30 jiffies.
[    0.045375] NR_IRQS: 4352, nr_irqs: 488, preallocated irqs: 16
[    0.045600] random: crng done (trusting CPU's manufacturer)
[    0.046461] Console: colour VGA+ 80x25
[    0.051520] printk: console [tty8] enabled
[    0.051545] ACPI: Core revision 20210105
[    0.051675] clocksource: hpet: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 133484882848 ns
[    0.051729] APIC: Switch to symmetric I/O mode setup
[    0.051822] x2apic: IRQ remapping doesn't support X2APIC mode
[    0.052286] ..TIMER: vector=0x30 apic1=0 pin1=2 apic2=-1 pin2=-1
[    0.068397] clocksource: tsc-early: mask: 0xffffffffffffffff max_cycles: 0x21137ee3c7b, max_idle_ns: 440795266815 ns
[    0.068443] Calibrating delay loop (skipped), value calculated using timer frequency.. 4591.53 BogoMIPS (lpj=7648860)
[    0.068485] pid_max: default: 32768 minimum: 301
[    0.068546] Mount-cache hash table entries: 16384 (order: 5, 131072 bytes, linear)
[    0.068604] Mountpoint-cache hash table entries: 16384 (order: 5, 131072 bytes, linear)
[    0.068807] x86/cpu: VMX (outside TXT) disabled by BIOS
[    0.068836] CPU0: Thermal monitoring enabled (TM1)
[    0.068880] process: using mwait in idle threads
[    0.068903] Last level iTLB entries: 4KB 512, 2MB 8, 4MB 8
[    0.068926] Last level dTLB entries: 4KB 512, 2MB 32, 4MB 32, 1GB 0
[    0.068952] Spectre V1 : Mitigation: usercopy/swapgs barriers and __user pointer sanitization
[    0.068991] Spectre V2 : Spectre mitigation: kernel not compiled with retpoline; no mitigation available!
[    0.068992] Speculative Store Bypass: Vulnerable
[    0.069054] SRBDS: Vulnerable: No microcode
[    0.069074] MDS: Vulnerable: Clear CPU buffers attempted, no microcode
[    0.069235] Freeing SMP alternatives memory: 36K
[    0.070406] smpboot: Estimated ratio of average max frequency by base frequency (times 1024): 1380
[    0.070451] smpboot: CPU0: Intel(R) Core(TM) i7-3610QM CPU @ 2.30GHz (family: 0x6, model: 0x3a, stepping: 0x9)
[    0.070574] Performance Events: PEBS fmt1+, IvyBridge events, 16-deep LBR, full-width counters, Intel PMU driver.
[    0.070623] ... version:                3
[    0.070643] ... bit width:              48
[    0.070664] ... generic registers:      4
[    0.070684] ... value mask:             0000ffffffffffff
[    0.070707] ... max period:             00007fffffffffff
[    0.070729] ... fixed-purpose events:   3
[    0.070749] ... event mask:             000000070000000f
[    0.070875] rcu: Hierarchical SRCU implementation.
[    0.071125] smp: Bringing up secondary CPUs ...
[    0.071204] x86: Booting SMP configuration:
[    0.071225] .... node  #0, CPUs:      #1 #2 #3 #4
[    0.080719] MDS CPU bug present and SMT on, data leak possible. See https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/mds.html for more details.
[    0.080719]  #5 #6 #7
[    0.085127] smp: Brought up 1 node, 8 CPUs
[    0.085173] smpboot: Max logical packages: 1
[    0.085194] smpboot: Total of 8 processors activated (36729.30 BogoMIPS)
[    0.087255] devtmpfs: initialized
[    0.087255] PM: Registering ACPI NVS region [mem 0xca41a000-0xca699fff] (2621440 bytes)
[    0.087255] PM: Registering ACPI NVS region [mem 0xca69f000-0xca6e1fff] (274432 bytes)
[    0.087255] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 6370867519511994 ns
[    0.087255] futex hash table entries: 2048 (order: 5, 131072 bytes, linear)
[    0.087255] NET: Registered protocol family 16
[    0.087255] thermal_sys: Registered thermal governor 'user_space'
[    0.087255] cpuidle: using governor teo
[    0.087255] ACPI FADT declares the system doesn't support PCIe ASPM, so disable it
[    0.087255] ACPI: bus type PCI registered
[    0.087255] PCI: MMCONFIG for domain 0000 [bus 00-3f] at [mem 0xf8000000-0xfbffffff] (base 0xf8000000)
[    0.087255] PCI: MMCONFIG at [mem 0xf8000000-0xfbffffff] reserved in E820
[    0.087255] pmd_set_huge: Cannot satisfy [mem 0xf8000000-0xf8200000] with a huge-page mapping due to MTRR override.
[    0.088495] PCI: Using configuration type 1 for base access
[    0.088559] core: PMU erratum BJ122, BV98, HSD29 worked around, HT is on
[    0.088736] ENERGY_PERF_BIAS: Set to 'normal', was 'performance'
[    0.089889] Kprobes globally optimized
[    0.089889] HugeTLB registered 2.00 MiB page size, pre-allocated 0 pages
[    0.089889] cryptd: max_cpu_qlen set to 1000
[    0.089889] ACPI: Added _OSI(Module Device)
[    0.089889] ACPI: Added _OSI(Processor Device)
[    0.089889] ACPI: Added _OSI(3.0 _SCP Extensions)
[    0.089889] ACPI: Added _OSI(Processor Aggregator Device)
[    0.089889] ACPI: Added _OSI(Linux-Dell-Video)
[    0.089889] ACPI: Added _OSI(Linux-Lenovo-NV-HDMI-Audio)
[    0.089889] ACPI: Added _OSI(Linux-HPI-Hybrid-Graphics)
[    0.097300] ACPI: 6 ACPI AML tables successfully acquired and loaded
[    0.098610] ACPI: Dynamic OEM Table Load:
[    0.098638] ACPI: SSDT 0xFFFF88810085A000 00083B (v01 PmRef  Cpu0Cst  00003001 INTL 20051117)
[    0.099179] ACPI: Dynamic OEM Table Load:
[    0.099204] ACPI: SSDT 0xFFFF888100863000 000303 (v01 PmRef  ApIst    00003000 INTL 20051117)
[    0.099634] ACPI: Dynamic OEM Table Load:
[    0.099659] ACPI: SSDT 0xFFFF888100A64C00 000119 (v01 PmRef  ApCst    00003000 INTL 20051117)
[    0.101066] ACPI: EC: EC started
[    0.101087] ACPI: EC: interrupt blocked
[    0.955178] ACPI: EC: EC_CMD/EC_SC=0x66, EC_DATA=0x62
[    0.955203] ACPI: \_SB_.PCI0.LPCB.EC__: Boot DSDT EC used to handle transactions
[    0.955239] ACPI: Interpreter enabled
[    0.955279] ACPI: (supports S0 S1 S3 S4 S5)
[    0.955300] ACPI: Using IOAPIC for interrupt routing
[    0.955344] PCI: Using host bridge windows from ACPI; if necessary, use "pci=nocrs" and report a bug
[    0.955573] ACPI: Enabled 15 GPEs in block 00 to 3F
[    0.961220] ACPI: PM: Power Resource [FN00] (off)
[    0.961310] ACPI: PM: Power Resource [FN01] (off)
[    0.961395] ACPI: PM: Power Resource [FN02] (off)
[    0.961481] ACPI: PM: Power Resource [FN03] (off)
[    0.961567] ACPI: PM: Power Resource [FN04] (off)
[    0.962059] ACPI: PCI Root Bridge [PCI0] (domain 0000 [bus 00-3e])
[    0.962089] acpi PNP0A08:00: _OSC: OS supports [ExtendedConfig ASPM ClockPM Segments MSI HPX-Type3]
[    0.962508] acpi PNP0A08:00: _OSC: OS now controls [PME AER PCIeCapability LTR]
[    0.962545] acpi PNP0A08:00: FADT indicates ASPM is unsupported, using BIOS configuration
[    0.962841] PCI host bridge to bus 0000:00
[    0.962863] pci_bus 0000:00: root bus resource [io  0x0000-0x0cf7 window]
[    0.962889] pci_bus 0000:00: root bus resource [io  0x0d00-0xffff window]
[    0.962915] pci_bus 0000:00: root bus resource [mem 0x000a0000-0x000bffff window]
[    0.962951] pci_bus 0000:00: root bus resource [mem 0x000dc000-0x000dffff window]
[    0.962988] pci_bus 0000:00: root bus resource [mem 0x000e0000-0x000e3fff window]
[    0.963024] pci_bus 0000:00: root bus resource [mem 0x000e4000-0x000e7fff window]
[    0.963060] pci_bus 0000:00: root bus resource [mem 0xcfa00000-0xfeafffff window]
[    0.963097] pci_bus 0000:00: root bus resource [mem 0x1af600000-0xfffffffff window]
[    0.963134] pci_bus 0000:00: root bus resource [bus 00-3e]
[    0.963167] pci 0000:00:00.0: [8086:0154] type 00 class 0x060000
[    0.963272] pci 0000:00:01.0: [8086:0151] type 01 class 0x060400
[    0.963331] pci 0000:00:01.0: PME# supported from D0 D3hot D3cold
[    0.963451] pci 0000:00:02.0: [8086:0166] type 00 class 0x030000
[    0.963482] pci 0000:00:02.0: reg 0x10: [mem 0xf6400000-0xf67fffff 64bit]
[    0.963512] pci 0000:00:02.0: reg 0x18: [mem 0xd0000000-0xdfffffff 64bit pref]
[    0.964845] pci 0000:00:02.0: reg 0x20: [io  0xf000-0xf03f]
[    0.964972] pci 0000:00:14.0: [8086:1e31] type 00 class 0x0c0330
[    0.965015] pci 0000:00:14.0: reg 0x10: [mem 0xf7d00000-0xf7d0ffff 64bit]
[    0.965110] pci 0000:00:14.0: PME# supported from D3hot D3cold
[    0.965222] pci 0000:00:16.0: [8086:1e3a] type 00 class 0x078000
[    0.965265] pci 0000:00:16.0: reg 0x10: [mem 0xf7d1a000-0xf7d1a00f 64bit]
[    0.965363] pci 0000:00:16.0: PME# supported from D0 D3hot D3cold
[    0.965469] pci 0000:00:1a.0: [8086:1e2d] type 00 class 0x0c0320
[    0.965508] pci 0000:00:1a.0: reg 0x10: [mem 0xf7d18000-0xf7d183ff]
[    0.965617] pci 0000:00:1a.0: PME# supported from D0 D3hot D3cold
[    0.965727] pci 0000:00:1b.0: [8086:1e20] type 00 class 0x040300
[    0.965768] pci 0000:00:1b.0: reg 0x10: [mem 0xf7d10000-0xf7d13fff 64bit]
[    0.965871] pci 0000:00:1b.0: PME# supported from D0 D3hot D3cold
[    0.965976] pci 0000:00:1c.0: [8086:1e10] type 01 class 0x060400
[    0.966089] pci 0000:00:1c.0: PME# supported from D0 D3hot D3cold
[    0.966203] pci 0000:00:1c.1: [8086:1e12] type 01 class 0x060400
[    0.966316] pci 0000:00:1c.1: PME# supported from D0 D3hot D3cold
[    0.966435] pci 0000:00:1c.2: [8086:1e14] type 01 class 0x060400
[    0.966549] pci 0000:00:1c.2: PME# supported from D0 D3hot D3cold
[    0.966662] pci 0000:00:1c.3: [8086:1e16] type 01 class 0x060400
[    0.966775] pci 0000:00:1c.3: PME# supported from D0 D3hot D3cold
[    0.966903] pci 0000:00:1d.0: [8086:1e26] type 00 class 0x0c0320
[    0.966943] pci 0000:00:1d.0: reg 0x10: [mem 0xf7d17000-0xf7d173ff]
[    0.967051] pci 0000:00:1d.0: PME# supported from D0 D3hot D3cold
[    0.967161] pci 0000:00:1f.0: [8086:1e59] type 00 class 0x060100
[    0.967365] pci 0000:00:1f.2: [8086:1e03] type 00 class 0x010601
[    0.967402] pci 0000:00:1f.2: reg 0x10: [io  0xf0b0-0xf0b7]
[    0.967432] pci 0000:00:1f.2: reg 0x14: [io  0xf0a0-0xf0a3]
[    0.967462] pci 0000:00:1f.2: reg 0x18: [io  0xf090-0xf097]
[    0.967492] pci 0000:00:1f.2: reg 0x1c: [io  0xf080-0xf083]
[    0.967522] pci 0000:00:1f.2: reg 0x20: [io  0xf060-0xf07f]
[    0.967552] pci 0000:00:1f.2: reg 0x24: [mem 0xf7d16000-0xf7d167ff]
[    0.967617] pci 0000:00:1f.2: PME# supported from D3hot
[    0.967714] pci 0000:00:1f.3: [8086:1e22] type 00 class 0x0c0500
[    0.967755] pci 0000:00:1f.3: reg 0x10: [mem 0xf7d15000-0xf7d150ff 64bit]
[    0.967800] pci 0000:00:1f.3: reg 0x20: [io  0xf040-0xf05f]
[    0.967937] pci 0000:01:00.0: [10de:0fd1] type 00 class 0x030000
[    0.967972] pci 0000:01:00.0: reg 0x10: [mem 0xf5000000-0xf5ffffff]
[    0.968005] pci 0000:01:00.0: reg 0x14: [mem 0xe0000000-0xefffffff 64bit pref]
[    0.968049] pci 0000:01:00.0: reg 0x1c: [mem 0xf0000000-0xf1ffffff 64bit pref]
[    0.968091] pci 0000:01:00.0: reg 0x24: [io  0xe000-0xe07f]
[    0.968120] pci 0000:01:00.0: reg 0x30: [mem 0xf6000000-0xf607ffff pref]
[    0.968159] pci 0000:01:00.0: Enabling HDA controller
[    0.968227] pci 0000:01:00.0: 32.000 Gb/s available PCIe bandwidth, limited by 2.5 GT/s PCIe x16 link at 0000:00:01.0 (capable of 126.016 Gb/s with 8.0 GT/s PCIe x16 link)
[    0.968377] pci 0000:00:01.0: PCI bridge to [bus 01]
[    0.968402] pci 0000:00:01.0:   bridge window [io  0xe000-0xefff]
[    0.968427] pci 0000:00:01.0:   bridge window [mem 0xf5000000-0xf60fffff]
[    0.968444] pci 0000:00:01.0:   bridge window [mem 0xe0000000-0xf1ffffff 64bit pref]
[    0.968519] pci 0000:00:1c.0: PCI bridge to [bus 02]
[    0.968544] pci 0000:00:1c.0:   bridge window [io  0xd000-0xdfff]
[    0.968570] pci 0000:00:1c.0:   bridge window [mem 0xf7200000-0xf7bfffff]
[    0.968600] pci 0000:00:1c.0:   bridge window [mem 0xf2b00000-0xf34fffff 64bit pref]
[    0.968701] pci 0000:03:00.0: [10ec:8168] type 00 class 0x020000
[    0.968750] pci 0000:03:00.0: reg 0x10: [io  0xc000-0xc0ff]
[    0.968806] pci 0000:03:00.0: reg 0x18: [mem 0xf3504000-0xf3504fff 64bit pref]
[    0.968862] pci 0000:03:00.0: reg 0x20: [mem 0xf3500000-0xf3503fff 64bit pref]
[    0.969017] pci 0000:03:00.0: supports D1 D2
[    0.969039] pci 0000:03:00.0: PME# supported from D0 D1 D2 D3hot D3cold
[    0.969183] pci 0000:00:1c.1: PCI bridge to [bus 03]
[    0.969209] pci 0000:00:1c.1:   bridge window [io  0xc000-0xcfff]
[    0.969240] pci 0000:00:1c.1:   bridge window [mem 0xf3500000-0xf35fffff 64bit pref]
[    0.969344] pci 0000:04:00.0: [10ec:5209] type 00 class 0xff0000
[    0.969394] pci 0000:04:00.0: reg 0x10: [mem 0xf6801000-0xf6801fff]
[    0.969604] pci 0000:04:00.0: supports D1 D2
[    0.969625] pci 0000:04:00.0: PME# supported from D1 D2 D3hot
[    0.969762] pci 0000:04:00.1: [10ec:5209] type 00 class 0x080500
[    0.969813] pci 0000:04:00.1: reg 0x10: [mem 0xf6800000-0xf68000ff]
[    0.970024] pci 0000:04:00.1: supports D1 D2
[    0.970046] pci 0000:04:00.1: PME# supported from D1 D2 D3hot
[    0.970186] pci 0000:00:1c.2: PCI bridge to [bus 04]
[    0.970212] pci 0000:00:1c.2:   bridge window [io  0xb000-0xbfff]
[    0.970239] pci 0000:00:1c.2:   bridge window [mem 0xf6800000-0xf71fffff]
[    0.970269] pci 0000:00:1c.2:   bridge window [mem 0xf2100000-0xf2afffff 64bit pref]
[    0.970412] pci 0000:05:00.0: [8086:0892] type 00 class 0x028000
[    0.970513] pci 0000:05:00.0: reg 0x10: [mem 0xf7c00000-0xf7c01fff 64bit]
[    0.970834] pci 0000:05:00.0: PME# supported from D0 D3hot D3cold
[    0.971032] pci 0000:00:1c.3: PCI bridge to [bus 05]
[    0.971060] pci 0000:00:1c.3:   bridge window [mem 0xf7c00000-0xf7cfffff]
[    0.971115] pci_bus 0000:00: on NUMA node 0
[    0.971834] ACPI: PCI Interrupt Link [LNKA] (IRQs 3 4 5 6 10 *11 12 14 15)
[    0.971908] ACPI: PCI Interrupt Link [LNKB] (IRQs *3 4 5 6 10 11 12 14 15)
[    0.971978] ACPI: PCI Interrupt Link [LNKC] (IRQs 3 *4 5 6 10 11 12 14 15)
[    0.972048] ACPI: PCI Interrupt Link [LNKD] (IRQs 3 4 5 6 *10 11 12 14 15)
[    0.972118] ACPI: PCI Interrupt Link [LNKE] (IRQs 3 4 5 6 10 11 12 14 15) *0, disabled.
[    0.972201] ACPI: PCI Interrupt Link [LNKF] (IRQs 3 4 5 6 10 11 12 14 15) *0, disabled.
[    0.972284] ACPI: PCI Interrupt Link [LNKG] (IRQs 3 4 *5 6 10 11 12 14 15)
[    0.972354] ACPI: PCI Interrupt Link [LNKH] (IRQs 3 4 5 6 10 *11 12 14 15)
[    0.972595] ACPI: EC: interrupt unblocked
[    0.972616] ACPI: EC: event unblocked
[    0.972641] ACPI: EC: EC_CMD/EC_SC=0x66, EC_DATA=0x62
[    0.972663] ACPI: EC: GPE=0x17
[    0.972683] ACPI: \_SB_.PCI0.LPCB.EC__: Boot DSDT EC initialization complete
[    0.972709] ACPI: \_SB_.PCI0.LPCB.EC__: EC: Used to handle transactions and events
[    0.972797] pci 0000:00:02.0: vgaarb: setting as boot VGA device
[    0.972797] pci 0000:00:02.0: vgaarb: VGA device added: decodes=io+mem,owns=io+mem,locks=none
[    0.972797] pci 0000:01:00.0: vgaarb: VGA device added: decodes=io+mem,owns=none,locks=none
[    0.972797] pci 0000:00:02.0: vgaarb: no bridge control possible
[    0.972797] pci 0000:01:00.0: vgaarb: bridge control possible
[    0.972797] vgaarb: loaded
[    0.972797] SCSI subsystem initialized
[    0.972797] libata version 3.00 loaded.
[    0.972797] ACPI: bus type USB registered
[    0.972797] usbcore: registered new interface driver usbfs
[    0.972797] usbcore: registered new interface driver hub
[    0.972797] usbcore: registered new device driver usb
[    0.972797] mc: Linux media interface: v0.10
[    0.972797] videodev: Linux video capture interface: v2.00
[    0.972797] Advanced Linux Sound Architecture Driver Initialized.
[    0.972797] Bluetooth: Core ver 2.22
[    0.972797] NET: Registered protocol family 31
[    0.972797] Bluetooth: HCI device and connection manager initialized
[    0.972797] Bluetooth: HCI socket layer initialized
[    0.972797] Bluetooth: L2CAP socket layer initialized
[    0.972797] Bluetooth: SCO socket layer initialized
[    0.972797] PCI: Using ACPI for IRQ routing
[    0.975113] PCI: pci_cache_line_size set to 64 bytes
[    0.975222] e820: reserve RAM buffer [mem 0x0009d800-0x0009ffff]
[    0.975224] e820: reserve RAM buffer [mem 0x40004000-0x43ffffff]
[    0.975226] e820: reserve RAM buffer [mem 0xc9e66000-0xcbffffff]
[    0.975227] e820: reserve RAM buffer [mem 0xcadcb000-0xcbffffff]
[    0.975229] e820: reserve RAM buffer [mem 0xcb000000-0xcbffffff]
[    0.975230] e820: reserve RAM buffer [mem 0x1af600000-0x1afffffff]
[    0.975482] hpet0: at MMIO 0xfed00000, IRQs 2, 8, 0, 0, 0, 0, 0, 0
[    0.975513] hpet0: 8 comparators, 64-bit 14.318180 MHz counter
[    0.977560] clocksource: Switched to clocksource tsc-early
[    0.979326] pnp: PnP ACPI init
[    0.979326] system 00:00: [mem 0xfed40000-0xfed44fff] has been reserved
[    0.979326] system 00:00: Plug and Play ACPI device, IDs PNP0c01 (active)
[    0.979326] system 00:01: [io  0x0680-0x069f] has been reserved
[    0.979326] system 00:01: [io  0x0200-0x020f] has been reserved
[    0.979326] system 00:01: [io  0xffff] has been reserved
[    0.979326] system 00:01: [io  0xffff] has been reserved
[    0.979326] system 00:01: [io  0x0400-0x0453] has been reserved
[    0.979326] system 00:01: [io  0x0458-0x047f] has been reserved
[    0.979326] system 00:01: [io  0x0500-0x057f] has been reserved
[    0.979326] system 00:01: [io  0x164e-0x164f] has been reserved
[    0.979326] system 00:01: Plug and Play ACPI device, IDs PNP0c02 (active)
[    0.979326] pnp 00:02: Plug and Play ACPI device, IDs PNP0b00 (active)
[    0.979326] system 00:03: [io  0x0454-0x0457] has been reserved
[    0.979326] system 00:03: Plug and Play ACPI device, IDs INT3f0d PNP0c02 (active)
[    0.979326] system 00:04: [io  0x0680-0x068f] has been reserved
[    0.979326] system 00:04: [io  0x0a10-0x0a1f] has been reserved
[    0.979326] system 00:04: Plug and Play ACPI device, IDs PNP0c02 (active)
[    0.979326] system 00:05: [io  0x04d0-0x04d1] has been reserved
[    0.979326] system 00:05: Plug and Play ACPI device, IDs PNP0c02 (active)
[    0.979326] pnp 00:06: Plug and Play ACPI device, IDs PNP0303 PNP030b (active)
[    0.979326] pnp 00:07: Plug and Play ACPI device, IDs ETD0300 ETD0001 SYN1507 PNP0f13 (active)
[    0.981046] system 00:08: [mem 0xfed1c000-0xfed1ffff] has been reserved
[    0.981072] system 00:08: [mem 0xfed10000-0xfed17fff] has been reserved
[    0.981098] system 00:08: [mem 0xfed18000-0xfed18fff] has been reserved
[    0.981123] system 00:08: [mem 0xfed19000-0xfed19fff] has been reserved
[    0.981148] system 00:08: [mem 0xf8000000-0xfbffffff] has been reserved
[    0.981173] system 00:08: [mem 0xfed20000-0xfed3ffff] has been reserved
[    0.981198] system 00:08: [mem 0xfed90000-0xfed93fff] has been reserved
[    0.981223] system 00:08: [mem 0xfed45000-0xfed8ffff] has been reserved
[    0.981248] system 00:08: [mem 0xff000000-0xffffffff] has been reserved
[    0.981274] system 00:08: [mem 0xfee00000-0xfeefffff] could not be reserved
[    0.981299] system 00:08: [mem 0xcfa00000-0xcfa00fff] has been reserved
[    0.981327] system 00:08: Plug and Play ACPI device, IDs PNP0c02 (active)
[    0.981450] system 00:09: [mem 0x20000000-0x201fffff] has been reserved
[    0.981476] system 00:09: [mem 0x40004000-0x40004fff] has been reserved
[    0.981503] system 00:09: Plug and Play ACPI device, IDs PNP0c01 (active)
[    0.981519] pnp: PnP ACPI: found 10 devices
[    0.987022] clocksource: acpi_pm: mask: 0xffffff max_cycles: 0xffffff, max_idle_ns: 2085701024 ns
[    0.987126] NET: Registered protocol family 2
[    0.987240] tcp_listen_portaddr_hash hash table entries: 4096 (order: 4, 65536 bytes, linear)
[    0.987293] TCP established hash table entries: 65536 (order: 7, 524288 bytes, linear)
[    0.987426] TCP bind hash table entries: 65536 (order: 8, 1048576 bytes, linear)
[    0.987662] TCP: Hash tables configured (established 65536 bind 65536)
[    0.987715] UDP hash table entries: 4096 (order: 5, 131072 bytes, linear)
[    0.987767] UDP-Lite hash table entries: 4096 (order: 5, 131072 bytes, linear)
[    0.987856] NET: Registered protocol family 1
[    0.988057] pci 0000:00:01.0: PCI bridge to [bus 01]
[    0.988082] pci 0000:00:01.0:   bridge window [io  0xe000-0xefff]
[    0.988108] pci 0000:00:01.0:   bridge window [mem 0xf5000000-0xf60fffff]
[    0.988134] pci 0000:00:01.0:   bridge window [mem 0xe0000000-0xf1ffffff 64bit pref]
[    0.988173] pci 0000:00:1c.0: PCI bridge to [bus 02]
[    0.988197] pci 0000:00:1c.0:   bridge window [io  0xd000-0xdfff]
[    0.989526] pci 0000:00:1c.0:   bridge window [mem 0xf7200000-0xf7bfffff]
[    0.989555] pci 0000:00:1c.0:   bridge window [mem 0xf2b00000-0xf34fffff 64bit pref]
[    0.989597] pci 0000:00:1c.1: PCI bridge to [bus 03]
[    0.989621] pci 0000:00:1c.1:   bridge window [io  0xc000-0xcfff]
[    0.989650] pci 0000:00:1c.1:   bridge window [mem 0xf3500000-0xf35fffff 64bit pref]
[    0.989692] pci 0000:00:1c.2: PCI bridge to [bus 04]
[    0.989716] pci 0000:00:1c.2:   bridge window [io  0xb000-0xbfff]
[    0.989744] pci 0000:00:1c.2:   bridge window [mem 0xf6800000-0xf71fffff]
[    0.989771] pci 0000:00:1c.2:   bridge window [mem 0xf2100000-0xf2afffff 64bit pref]
[    0.989813] pci 0000:00:1c.3: PCI bridge to [bus 05]
[    0.989839] pci 0000:00:1c.3:   bridge window [mem 0xf7c00000-0xf7cfffff]
[    0.989871] pci_bus 0000:00: resource 4 [io  0x0000-0x0cf7 window]
[    0.989896] pci_bus 0000:00: resource 5 [io  0x0d00-0xffff window]
[    0.989920] pci_bus 0000:00: resource 6 [mem 0x000a0000-0x000bffff window]
[    0.989946] pci_bus 0000:00: resource 7 [mem 0x000dc000-0x000dffff window]
[    0.989971] pci_bus 0000:00: resource 8 [mem 0x000e0000-0x000e3fff window]
[    0.989996] pci_bus 0000:00: resource 9 [mem 0x000e4000-0x000e7fff window]
[    0.990021] pci_bus 0000:00: resource 10 [mem 0xcfa00000-0xfeafffff window]
[    0.990047] pci_bus 0000:00: resource 11 [mem 0x1af600000-0xfffffffff window]
[    0.990073] pci_bus 0000:01: resource 0 [io  0xe000-0xefff]
[    0.990096] pci_bus 0000:01: resource 1 [mem 0xf5000000-0xf60fffff]
[    0.990121] pci_bus 0000:01: resource 2 [mem 0xe0000000-0xf1ffffff 64bit pref]
[    0.990157] pci_bus 0000:02: resource 0 [io  0xd000-0xdfff]
[    0.990180] pci_bus 0000:02: resource 1 [mem 0xf7200000-0xf7bfffff]
[    0.990204] pci_bus 0000:02: resource 2 [mem 0xf2b00000-0xf34fffff 64bit pref]
[    0.990240] pci_bus 0000:03: resource 0 [io  0xc000-0xcfff]
[    0.990264] pci_bus 0000:03: resource 2 [mem 0xf3500000-0xf35fffff 64bit pref]
[    0.990300] pci_bus 0000:04: resource 0 [io  0xb000-0xbfff]
[    0.990323] pci_bus 0000:04: resource 1 [mem 0xf6800000-0xf71fffff]
[    0.990347] pci_bus 0000:04: resource 2 [mem 0xf2100000-0xf2afffff 64bit pref]
[    0.990384] pci_bus 0000:05: resource 1 [mem 0xf7c00000-0xf7cfffff]
[    0.990484] pci 0000:00:02.0: Video device with shadowed ROM at [mem 0x000c0000-0x000dffff]
[    0.990994] PCI: CLS 64 bytes, default 64
[    0.991049] Unpacking initramfs...
[    0.991143] Freeing initrd memory: 52K
[    0.991167] PCI-DMA: Using software bounce buffering for IO (SWIOTLB)
[    0.991191] software IO TLB: mapped [mem 0x00000000c5e66000-0x00000000c9e66000] (64MB)
[    0.991308] RAPL PMU: API unit is 2^-32 Joules, 3 fixed counters, 163840 ms ovfl timer
[    0.991346] RAPL PMU: hw unit of domain pp0-core 2^-16 Joules
[    0.991369] RAPL PMU: hw unit of domain package 2^-16 Joules
[    0.991392] RAPL PMU: hw unit of domain pp1-gpu 2^-16 Joules
[    0.992438] Initialise system trusted keyrings
[    0.992484] workingset: timestamp_bits=62 max_order=21 bucket_order=0
[    0.993266] fuse: init (API version 7.33)
[    1.005892] Key type asymmetric registered
[    1.005915] Asymmetric key parser 'x509' registered
[    1.005943] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 252)
[    1.005979] io scheduler kyber registered
[    1.006175] pcieport 0000:00:01.0: PME: Signaling with IRQ 24
[    1.006347] pcieport 0000:00:1c.0: PME: Signaling with IRQ 25
[    1.006540] pcieport 0000:00:1c.1: PME: Signaling with IRQ 26
[    1.006726] pcieport 0000:00:1c.2: PME: Signaling with IRQ 27
[    1.006915] pcieport 0000:00:1c.3: PME: Signaling with IRQ 28
[    1.007946] ACPI: AC: AC Adapter [ADP1] (off-line)
[    1.008019] input: Lid Switch as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/device:00/PNP0C09:00/PNP0C0D:00/input/input0
[    1.008078] ACPI: button: Lid Switch [LID0]
[    1.008131] input: Power Button as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0C:00/input/input1
[    1.008279] ACPI: button: Power Button [PWRB]
[    1.008347] input: Power Button as /devices/LNXSYSTM:00/LNXPWRBN:00/input/input2
[    1.008467] ACPI: button: Power Button [PWRF]
[    1.009124] thermal LNXTHERM:00: registered as thermal_zone0
[    1.009149] ACPI: thermal: Thermal Zone [TZ00] (28 C)
[    1.009368] thermal LNXTHERM:01: registered as thermal_zone1
[    1.009392] ACPI: thermal: Thermal Zone [TZ01] (30 C)
[    1.010565] thermal LNXTHERM:02: registered as thermal_zone2
[    1.010589] ACPI: thermal: Thermal Zone [THRM] (37 C)
[    1.010786] Non-volatile memory driver v1.3
[    1.011473] i915 0000:00:02.0: vgaarb: deactivate vga console
[    1.012751] Console: switching to colour dummy device 80x25
[    1.025323] i915 0000:00:02.0: vgaarb: changed VGA decodes: olddecodes=io+mem,decodes=none:owns=io+mem
[    1.104918] [drm] Initialized i915 1.6.0 20201103 for 0000:00:02.0 on minor 0
[    1.105051] ACPI: video: [Firmware Bug]: ACPI(PEGP) defines _DOD but not _DOS
[    1.105453] ACPI: video: Video Device [PEGP] (multi-head: yes  rom: yes  post: no)
[    1.107631] acpi device:13: registered as cooling_device13
[    1.107667] input: Video Bus as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/device:11/LNXVIDEO:00/input/input3
[    1.108024] ACPI: video: Video Device [GFX0] (multi-head: yes  rom: no  post: no)
[    1.110551] acpi device:48: registered as cooling_device14
[    1.113049] acpi device:49: registered as cooling_device15
[    1.113117] input: Video Bus as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/LNXVIDEO:01/input/input4
[    1.113785] ACPI Warning: SystemIO range 0x0000000000000428-0x000000000000042F conflicts with OpRegion 0x0000000000000400-0x000000000000047F (\PMIO) (20210105/utaddress-204)
[    1.113797] ACPI: OSL: Resource conflict; ACPI support missing from driver?
[    1.113802] ACPI Warning: SystemIO range 0x0000000000000540-0x000000000000054F conflicts with OpRegion 0x0000000000000500-0x000000000000055F (\_SB.PCI0.PEG0.PEGP.GPIO) (20210105/utaddress-204)
[    1.113810] ACPI Warning: SystemIO range 0x0000000000000540-0x000000000000054F conflicts with OpRegion 0x0000000000000500-0x0000000000000563 (\GPIO) (20210105/utaddress-204)
[    1.113816] ACPI: OSL: Resource conflict; ACPI support missing from driver?
[    1.113819] ACPI Warning: SystemIO range 0x0000000000000530-0x000000000000053F conflicts with OpRegion 0x0000000000000500-0x000000000000055F (\_SB.PCI0.PEG0.PEGP.GPIO) (20210105/utaddress-204)
[    1.113825] ACPI Warning: SystemIO range 0x0000000000000530-0x000000000000053F conflicts with OpRegion 0x0000000000000500-0x0000000000000563 (\GPIO) (20210105/utaddress-204)
[    1.113831] ACPI: OSL: Resource conflict; ACPI support missing from driver?
[    1.113834] ACPI Warning: SystemIO range 0x0000000000000500-0x000000000000052F conflicts with OpRegion 0x0000000000000500-0x000000000000055F (\_SB.PCI0.PEG0.PEGP.GPIO) (20210105/utaddress-204)
[    1.113840] ACPI Warning: SystemIO range 0x0000000000000500-0x000000000000052F conflicts with OpRegion 0x0000000000000500-0x0000000000000563 (\GPIO) (20210105/utaddress-204)
[    1.113846] ACPI: OSL: Resource conflict; ACPI support missing from driver?
[    1.113849] lpc_ich: Resource conflict(s) found affecting gpio_ich
[    1.113900] ahci 0000:00:1f.2: version 3.0
[    1.124115] ahci 0000:00:1f.2: AHCI 0001.0300 32 slots 6 ports 6 Gbps 0x7 impl SATA mode
[    1.124124] ahci 0000:00:1f.2: flags: 64bit ncq pm led clo pio slum part ems apst 
[    1.127324] fbcon: i915drmfb (fb0) is primary device
[    1.128537] ACPI: battery: Slot [BAT1] (battery present)
[    1.142550] scsi host0: ahci
[    1.142847] scsi host1: ahci
[    1.143031] scsi host2: ahci
[    1.143196] scsi host3: ahci
[    1.143302] scsi host4: ahci
[    1.143381] scsi host5: ahci
[    1.143411] ata1: SATA max UDMA/133 abar m2048@0xf7d16000 port 0xf7d16100 irq 31
[    1.143415] ata2: SATA max UDMA/133 abar m2048@0xf7d16000 port 0xf7d16180 irq 31
[    1.143418] ata3: SATA max UDMA/133 abar m2048@0xf7d16000 port 0xf7d16200 irq 31
[    1.143419] ata4: DUMMY
[    1.143420] ata5: DUMMY
[    1.143421] ata6: DUMMY
[    1.143512] tun: Universal TUN/TAP device driver, 1.6
[    1.143557] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[    1.143558] ehci-pci: EHCI PCI platform driver
[    1.143679] ehci-pci 0000:00:1a.0: EHCI Host Controller
[    1.143685] ehci-pci 0000:00:1a.0: new USB bus registered, assigned bus number 1
[    1.143697] ehci-pci 0000:00:1a.0: debug port 2
[    1.147599] ehci-pci 0000:00:1a.0: irq 16, io mem 0xf7d18000
[    1.161791] ehci-pci 0000:00:1a.0: USB 2.0 started, EHCI 1.00
[    1.161825] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 5.12
[    1.161828] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    1.161830] usb usb1: Product: EHCI Host Controller
[    1.161831] usb usb1: Manufacturer: Linux 5.12.2 ehci_hcd
[    1.161832] usb usb1: SerialNumber: 0000:00:1a.0
[    1.161994] hub 1-0:1.0: USB hub found
[    1.162001] hub 1-0:1.0: 2 ports detected
[    1.162219] ehci-pci 0000:00:1d.0: EHCI Host Controller
[    1.162224] ehci-pci 0000:00:1d.0: new USB bus registered, assigned bus number 2
[    1.162235] ehci-pci 0000:00:1d.0: debug port 2
[    1.166152] ehci-pci 0000:00:1d.0: irq 23, io mem 0xf7d17000
[    1.178496] ehci-pci 0000:00:1d.0: USB 2.0 started, EHCI 1.00
[    1.178559] usb usb2: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 5.12
[    1.178562] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    1.178564] usb usb2: Product: EHCI Host Controller
[    1.178566] usb usb2: Manufacturer: Linux 5.12.2 ehci_hcd
[    1.178567] usb usb2: SerialNumber: 0000:00:1d.0
[    1.178787] hub 2-0:1.0: USB hub found
[    1.178797] hub 2-0:1.0: 2 ports detected
[    1.179088] xhci_hcd 0000:00:14.0: xHCI Host Controller
[    1.179095] xhci_hcd 0000:00:14.0: new USB bus registered, assigned bus number 3
[    1.180158] xhci_hcd 0000:00:14.0: hcc params 0x20007181 hci version 0x100 quirks 0x000000000000b930
[    1.180317] usb usb3: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 5.12
[    1.180320] usb usb3: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    1.180321] usb usb3: Product: xHCI Host Controller
[    1.180323] usb usb3: Manufacturer: Linux 5.12.2 xhci-hcd
[    1.180324] usb usb3: SerialNumber: 0000:00:14.0
[    1.180527] hub 3-0:1.0: USB hub found
[    1.180539] hub 3-0:1.0: 4 ports detected
[    1.180871] xhci_hcd 0000:00:14.0: xHCI Host Controller
[    1.180876] xhci_hcd 0000:00:14.0: new USB bus registered, assigned bus number 4
[    1.180879] xhci_hcd 0000:00:14.0: Host supports USB 3.0 SuperSpeed
[    1.180918] usb usb4: New USB device found, idVendor=1d6b, idProduct=0003, bcdDevice= 5.12
[    1.180921] usb usb4: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    1.180923] usb usb4: Product: xHCI Host Controller
[    1.180924] usb usb4: Manufacturer: Linux 5.12.2 xhci-hcd
[    1.180925] usb usb4: SerialNumber: 0000:00:14.0
[    1.181113] hub 4-0:1.0: USB hub found
[    1.181126] hub 4-0:1.0: 4 ports detected
[    1.181448] usbcore: registered new interface driver usb-storage
[    1.181487] i8042: PNP: PS/2 Controller [PNP0303:PS2K,PNP0f13:PS2M] at 0x60,0x64 irq 1,12
[    1.191099] serio: i8042 KBD port at 0x60,0x64 irq 1
[    1.191103] serio: i8042 AUX port at 0x60,0x64 irq 12
[    1.191616] rtc_cmos 00:02: RTC can wake from S4
[    1.191838] rtc_cmos 00:02: registered as rtc0
[    1.191905] rtc_cmos 00:02: setting system clock to 2021-06-02T12:59:03 UTC (1622638743)
[    1.191918] rtc_cmos 00:02: alarms up to one month, y3k, 242 bytes nvram, hpet irqs
[    1.191931] i2c /dev entries driver
[    1.192142] i801_smbus 0000:00:1f.3: SMBus using PCI interrupt
[    1.192291] i2c i2c-7: 2/4 memory slots populated (from DMI)
[    1.192592] i2c i2c-7: Successfully instantiated SPD at 0x50
[    1.193050] i2c i2c-7: Successfully instantiated SPD at 0x52
[    1.193083] usbcore: registered new interface driver uvcvideo
[    1.193544] intel_pstate: Intel P-state driver initializing
[    1.193738] sdhci: Secure Digital Host Controller Interface driver
[    1.193739] sdhci: Copyright(c) Pierre Ossman
[    1.193772] sdhci-pci 0000:04:00.1: SDHCI controller found [10ec:5209] (rev 1)
[    1.193901] sdhci-pci 0000:04:00.1: Will use DMA mode even though HW doesn't fully claim to support it.
[    1.193927] mmc0 bounce up to 128 segments into one, max segment size 65536 bytes
[    1.193986] sdhci-pci 0000:04:00.1: Will use DMA mode even though HW doesn't fully claim to support it.
[    1.194112] mmc0: SDHCI controller on PCI [0000:04:00.1] using DMA
[    1.194159] sdhci-pci 0000:04:00.1: Will use DMA mode even though HW doesn't fully claim to support it.
[    1.194560] usbcore: registered new interface driver usbhid
[    1.194562] usbhid: USB HID core driver
[    1.194686] intel_rapl_common: Found RAPL domain package
[    1.194690] intel_rapl_common: Found RAPL domain core
[    1.194692] intel_rapl_common: Found RAPL domain uncore
[    1.194701] intel_rapl_common: RAPL package-0 domain package locked by BIOS
[    1.195440] NET: Registered protocol family 10
[    1.195617] Segment Routing with IPv6
[    1.195633] sit: IPv6, IPv4 and MPLS over IPv4 tunneling driver
[    1.195716] NET: Registered protocol family 17
[    1.196068] microcode: sig=0x306a9, pf=0x10, revision=0x1f
[    1.196103] microcode: Microcode Update Driver: v2.2.
[    1.196105] IPI shorthand broadcast: enabled
[    1.196108] AVX version of gcm_enc/dec engaged.
[    1.196150] AES CTR mode by8 optimization enabled
[    1.196371] sched_clock: Marking stable (1190165857, 6200684)->(1205335777, -8969236)
[    1.196420] registered taskstats version 1
[    1.196422] Loading compiled-in X.509 certificates
[    1.197651] zswap: loaded using pool zstd/z3fold
[    1.197696] Key type ._fscrypt registered
[    1.197697] Key type .fscrypt registered
[    1.197697] Key type fscrypt-provisioning registered
[    1.197967] cfg80211: Loading compiled-in X.509 certificates for regulatory database
[    1.198269] cfg80211: Loaded X.509 cert 'sforshee: 00b28ddf47aef9cea7'
[    1.198283] platform regulatory.0: Direct firmware load for regulatory.db failed with error -2
[    1.198285] cfg80211: failed to load regulatory.db
[    1.202333] input: AT Translated Set 2 keyboard as /devices/platform/i8042/serio0/input/input5
[    1.359194] atkbd serio0: Unknown key pressed (translated set 2, code 0xe4 on isa0060/serio0).
[    1.359204] atkbd serio0: Use 'setkeycodes e064 <keycode>' to make it known.
[    1.379589] atkbd serio0: Unknown key released (translated set 2, code 0xe4 on isa0060/serio0).
[    1.379600] atkbd serio0: Use 'setkeycodes e064 <keycode>' to make it known.
[    1.455357] ata2: SATA link up 6.0 Gbps (SStatus 133 SControl 300)
[    1.455387] ata3: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
[    1.455407] ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
[    1.456121] ata2.00: ACPI cmd ef/10:06:00:00:00:00 (SET FEATURES) succeeded
[    1.456132] ata2.00: ACPI cmd f5/00:00:00:00:00:00 (SECURITY FREEZE LOCK) filtered out
[    1.456137] ata2.00: ACPI cmd b1/c1:00:00:00:00:00 (DEVICE CONFIGURATION OVERLAY) filtered out
[    1.456733] ata1.00: ACPI cmd ef/10:06:00:00:00:00 (SET FEATURES) succeeded
[    1.456744] ata1.00: ACPI cmd f5/00:00:00:00:00:00 (SECURITY FREEZE LOCK) filtered out
[    1.456749] ata1.00: ACPI cmd b1/c1:00:00:00:00:00 (DEVICE CONFIGURATION OVERLAY) filtered out
[    1.456761] ata2.00: ATA-9: M4-CT256M4SSD3, 04MH, max UDMA/100
[    1.456767] ata2.00: 500118192 sectors, multi 16: LBA48 NCQ (depth 32), AA
[    1.457494] ata2.00: ACPI cmd ef/10:06:00:00:00:00 (SET FEATURES) succeeded
[    1.457501] ata2.00: ACPI cmd f5/00:00:00:00:00:00 (SECURITY FREEZE LOCK) filtered out
[    1.457506] ata2.00: ACPI cmd b1/c1:00:00:00:00:00 (DEVICE CONFIGURATION OVERLAY) filtered out
[    1.457851] ata1.00: ATA-8: Hitachi HTS727575A9E364, JF4OA0D0, max UDMA/133
[    1.457858] ata1.00: 1465149168 sectors, multi 16: LBA48 NCQ (depth 32), AA
[    1.457875] ata2.00: configured for UDMA/100
[    1.463610] ata3.00: ACPI cmd ef/10:06:00:00:00:00 (SET FEATURES) succeeded
[    1.463621] ata3.00: ACPI cmd f5/00:00:00:00:00:00 (SECURITY FREEZE LOCK) filtered out
[    1.463626] ata3.00: ACPI cmd b1/c1:00:00:00:00:00 (DEVICE CONFIGURATION OVERLAY) filtered out
[    1.465836] ata3.00: ATAPI: TSSTcorp CDDVDW SN-208AB, TM00, max UDMA/100
[    1.472424] ata3.00: ACPI cmd ef/10:06:00:00:00:00 (SET FEATURES) succeeded
[    1.472438] ata3.00: ACPI cmd f5/00:00:00:00:00:00 (SECURITY FREEZE LOCK) filtered out
[    1.472443] ata3.00: ACPI cmd b1/c1:00:00:00:00:00 (DEVICE CONFIGURATION OVERLAY) filtered out
[    1.477396] ata1.00: ACPI cmd ef/10:06:00:00:00:00 (SET FEATURES) succeeded
[    1.477409] ata1.00: ACPI cmd f5/00:00:00:00:00:00 (SECURITY FREEZE LOCK) filtered out
[    1.477415] ata1.00: ACPI cmd b1/c1:00:00:00:00:00 (DEVICE CONFIGURATION OVERLAY) filtered out
[    1.478248] ata3.00: configured for UDMA/100
[    1.478681] ata1.00: configured for UDMA/133
[    1.491848] usb 1-1: new high-speed USB device number 2 using ehci-pci
[    1.511855] usb 2-1: new high-speed USB device number 2 using ehci-pci
[    1.638852] usb 1-1: New USB device found, idVendor=8087, idProduct=0024, bcdDevice= 0.00
[    1.638862] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[    1.639259] hub 1-1:1.0: USB hub found
[    1.639324] hub 1-1:1.0: 6 ports detected
[    1.658854] usb 2-1: New USB device found, idVendor=8087, idProduct=0024, bcdDevice= 0.00
[    1.658863] usb 2-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[    1.659261] hub 2-1:1.0: USB hub found
[    1.659312] hub 2-1:1.0: 6 ports detected
[    1.859793] psmouse serio1: elantech: assuming hardware version 3 (with firmware version 0x550f00)
[    1.876737] psmouse serio1: elantech: Synaptics capabilities query result 0x49, 0x15, 0x0c.
[    1.893000] psmouse serio1: elantech: Elan sample query result 03, 1d, b7
[    1.945457] snd_hda_intel 0000:00:1b.0: bound 0000:00:02.0 (ops 0xffffffff820938c0)
[    1.956690] snd_hda_codec_realtek hdaudioC0D0: autoconfig for ALC892: line_outs=2 (0x1b/0x16/0x0/0x0/0x0) type:speaker
[    1.956699] snd_hda_codec_realtek hdaudioC0D0:    speaker_outs=0 (0x0/0x0/0x0/0x0/0x0)
[    1.956703] snd_hda_codec_realtek hdaudioC0D0:    hp_outs=1 (0x14/0x0/0x0/0x0/0x0)
[    1.956707] snd_hda_codec_realtek hdaudioC0D0:    mono: mono_out=0x0
[    1.956709] snd_hda_codec_realtek hdaudioC0D0:    dig-out=0x1e/0x0
[    1.956711] snd_hda_codec_realtek hdaudioC0D0:    inputs:
[    1.956714] snd_hda_codec_realtek hdaudioC0D0:      Internal Mic=0x19
[    1.956717] snd_hda_codec_realtek hdaudioC0D0:      Mic=0x18
[    1.966812] input: HDA Intel PCH Mic as /devices/pci0000:00/0000:00:1b.0/sound/card0/input8
[    1.966850] input: HDA Intel PCH Headphone as /devices/pci0000:00/0000:00:1b.0/sound/card0/input9
[    1.966883] input: HDA Intel PCH HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:1b.0/sound/card0/input10
[    1.966908] Console: switching to colour frame buffer device 240x67
[    1.977506] input: ETPS/2 Elantech Touchpad as /devices/platform/i8042/serio1/input/input7
[    1.983912] atkbd serio0: Unknown key pressed (translated set 2, code 0xe4 on isa0060/serio0).
[    1.983923] i915 0000:00:02.0: [drm] fb0: i915drmfb frame buffer device
[    1.983971] atkbd serio0: Use 'setkeycodes e064 <keycode>' to make it known.
[    1.998463] tsc: Refined TSC clocksource calibration: 2294.786 MHz
[    1.999179] scsi 0:0:0:0: Direct-Access     ATA      Hitachi HTS72757 A0D0 PQ: 0 ANSI: 5
[    2.000300] atkbd serio0: Unknown key released (translated set 2, code 0xe4 on isa0060/serio0).
[    2.000308] atkbd serio0: Use 'setkeycodes e064 <keycode>' to make it known.
[    2.001182] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x2113f7e44a7, max_idle_ns: 440795281465 ns
[    2.003670] sd 0:0:0:0: Attached scsi generic sg0 type 0
[    2.003750] sd 0:0:0:0: [sda] 1465149168 512-byte logical blocks: (750 GB/699 GiB)
[    2.003755] sd 0:0:0:0: [sda] 4096-byte physical blocks
[    2.003766] sd 0:0:0:0: [sda] Write Protect is off
[    2.003770] sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
[    2.003786] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[    2.231540] clocksource: Switched to clocksource tsc
[    2.253580] scsi 1:0:0:0: Direct-Access     ATA      M4-CT256M4SSD3   04MH PQ: 0 ANSI: 5
[    2.256642] sd 1:0:0:0: Attached scsi generic sg1 type 0
[    2.256682] sd 1:0:0:0: [sdb] 500118192 512-byte logical blocks: (256 GB/238 GiB)
[    2.259309] sd 1:0:0:0: [sdb] Write Protect is off
[    2.260418] sd 1:0:0:0: [sdb] Mode Sense: 00 3a 00 00
[    2.260426] sd 1:0:0:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[    2.261893]  sdb: sdb1 sdb2
[    2.263156] scsi 2:0:0:0: CD-ROM            TSSTcorp CDDVDW SN-208AB  TM00 PQ: 0 ANSI: 5
[    2.263247] sd 1:0:0:0: [sdb] Attached SCSI disk
[    2.298537]  sda: sda1 sda2 sda3 sda4 < sda5 sda6 sda7 sda8 >
[    2.301714] sd 0:0:0:0: [sda] Attached SCSI disk
[    2.393670] sr 2:0:0:0: [sr0] scsi3-mmc drive: 24x/24x writer dvd-ram cd/rw xa/form2 cdda tray
[    2.396589] cdrom: Uniform CD-ROM driver Revision: 3.20
[    2.442780] sr 2:0:0:0: Attached scsi CD-ROM sr0
[    2.442909] sr 2:0:0:0: Attached scsi generic sg2 type 5
[    2.446320] ALSA device list:
[    2.449177]   #0: HDA Intel PCH at 0xf7d10000 irq 33
[    2.458957] EXT4-fs (sdb2): mounted filesystem with writeback data mode. Opts: (null). Quota mode: disabled.
[    2.461909] VFS: Mounted root (ext4 filesystem) readonly on device 8:18.
[    2.465759] devtmpfs: mounted
[    2.468981] Freeing unused kernel image (initmem) memory: 992K
[    2.471837] Write protecting the kernel read-only data: 20480k
[    2.475514] Freeing unused kernel image (text/rodata gap) memory: 2036K
[    2.478654] Freeing unused kernel image (rodata/data gap) memory: 680K
[    2.481481] Run /sbin/init as init process
[    2.484288]   with arguments:
[    2.484289]     /sbin/init
[    2.484291]   with environment:
[    2.484292]     HOME=/
[    2.484294]     TERM=linux
[    2.484295]     BOOT_IMAGE=/boot/vmlinuz
[    2.957309] udevd[634]: starting version 3.2.9
[    2.970005] udevd[634]: starting eudev-3.2.9
[    3.107692] input: MSI WMI hotkeys as /devices/virtual/input/input11
[    3.113227] Intel(R) Wireless WiFi driver for Linux
[    3.113364] iwlwifi 0000:05:00.0: can't disable ASPM; OS doesn't have ASPM control
[    3.116918] iwlwifi 0000:05:00.0: loaded firmware version 18.168.6.1 135-6.ucode op_mode iwldvm
[    3.120689] iwlwifi 0000:05:00.0: CONFIG_IWLWIFI_DEBUG disabled
[    3.120692] iwlwifi 0000:05:00.0: CONFIG_IWLWIFI_DEBUGFS disabled
[    3.120693] iwlwifi 0000:05:00.0: CONFIG_IWLWIFI_DEVICE_TRACING disabled
[    3.120694] iwlwifi 0000:05:00.0: Detected Intel(R) Centrino(R) Wireless-N 135 BGN, REV=0x120
[    3.138950] r8169 0000:03:00.0: can't disable ASPM; OS doesn't have ASPM control
[    3.140356] libphy: r8169: probed
[    3.140705] r8169 0000:03:00.0 eth0: RTL8168evl/8111evl, 8c:89:a5:01:0d:d3, XID 2c9, IRQ 36
[    3.140711] r8169 0000:03:00.0 eth0: jumbo features [frames: 9194 bytes, tx checksumming: ko]
[    3.157836] ieee80211 phy0: Selected rate control algorithm 'iwl-agn-rs'
[    3.858742] EXT4-fs (sdb2): re-mounted. Opts: nobarrier. Quota mode: disabled.
[    3.921891] Adding 1048572k swap on /dev/sdb1.  Priority:-2 extents:1 across:1048572k SSFS
[    4.770769] iwlwifi 0000:05:00.0: Radio type=0x0-0x0-0x0
[    4.865889] iwlwifi 0000:05:00.0: Radio type=0x0-0x0-0x0
[   11.585990] atkbd serio0: Unknown key pressed (translated set 2, code 0xf1 on isa0060/serio0).
[   11.586002] atkbd serio0: Use 'setkeycodes e071 <keycode>' to make it known.
[   11.590208] atkbd serio0: Unknown key released (translated set 2, code 0xf1 on isa0060/serio0).
[   11.590217] atkbd serio0: Use 'setkeycodes e071 <keycode>' to make it known.
[   28.406207] wlan0: authenticate with b0:b2:dc:5b:ec:34
[   28.412033] wlan0: send auth to b0:b2:dc:5b:ec:34 (try 1/3)
[   28.414272] wlan0: authenticated
[   28.415913] wlan0: associate with b0:b2:dc:5b:ec:34 (try 1/3)
[   28.420072] wlan0: RX AssocResp from b0:b2:dc:5b:ec:34 (capab=0x431 status=0 aid=2)
[   28.423213] wlan0: associated
[   28.706337] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[   54.203508] usb 1-1.4: new high-speed USB device number 3 using ehci-pci
[   54.348974] usb 1-1.4: New USB device found, idVendor=5986, idProduct=030c, bcdDevice= 3.01
[   54.348987] usb 1-1.4: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[   54.348991] usb 1-1.4: Product: BisonCam, NB Pro
[   54.348994] usb 1-1.4: Manufacturer: Bison
[   54.353115] usb 1-1.4: Found UVC 1.00 device BisonCam, NB Pro (5986:030c)
[   86.151321] snd_hda_intel 0000:00:1b.0: Unstable LPIB (65536 >= 8192); disabling LPIB delay counting
[ 4542.424363] snd_hda_intel 0000:00:1b.0: IRQ timing workaround is activated for card #0. Suggest a bigger bdl_pos_adj.
[ 5985.814338] usb 1-1.4: USB disconnect, device number 3
[ 5985.814830] uvcvideo 1-1.4:1.1: Failed to resubmit video URB (-19).
[ 5985.831012] BUG: kernel NULL pointer dereference, address: 0000000000000000
[ 5985.831018] #PF: supervisor read access in kernel mode
[ 5985.831021] #PF: error_code(0x0000) - not-present page
[ 5985.831023] PGD 0 P4D 0 
[ 5985.831026] Oops: 0000 [#1] SMP
[ 5985.831030] CPU: 4 PID: 3335 Comm: mpv/demux Not tainted 5.12.2 #73
[ 5985.831033] Hardware name: Micro-Star International Co., Ltd. GE60 0NC/MS-16GA, BIOS E16GAIMS.105 03/28/2012
[ 5985.831035] RIP: 0010:usb_ifnum_to_if+0x35/0x50
[ 5985.831042] Code: 34 41 0f b6 50 04 84 d2 74 2f 49 8d 80 98 00 00 00 83 ea 01 49 8d 8c d0 a0 00 00 00 eb 09 48 83 c0 08 48 39 c8 74 12 4c 8b 00 <49> 8b 10 0f b6 52 02 39 f2 75 e9 4c 89 c0 c3 45 31 c0 4c 89 c0 c3
[ 5985.831045] RSP: 0018:ffffc9000cb33db8 EFLAGS: 00010202
[ 5985.831048] RAX: ffff8881011d4098 RBX: 0000000000000001 RCX: ffff8881011d40a8
[ 5985.831051] RDX: 0000000000000001 RSI: 0000000000000001 RDI: ffff888102b99000
[ 5985.831052] RBP: ffff88810dae4600 R08: 0000000000000000 R09: 0000000000000001
[ 5985.831054] R10: ffffea000329c000 R11: dead000000000100 R12: ffff88810dae46a8
[ 5985.831056] R13: 0000000000000000 R14: ffff888102b99000 R15: ffff8881014b3800
[ 5985.831058] FS:  00007f4b06851700(0000) GS:ffff8881a9300000(0000) knlGS:0000000000000000
[ 5985.831060] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5985.831062] CR2: 0000000000000000 CR3: 000000012fd4c006 CR4: 00000000001706e0
[ 5985.831064] Call Trace:
[ 5985.831067]  usb_set_interface+0x2c/0x280
[ 5985.831073]  uvc_video_stop_streaming+0x2f/0x80
[ 5985.831078]  uvc_stop_streaming+0x16/0x40
[ 5985.831082]  __vb2_queue_cancel+0x23/0x1e0
[ 5985.831086]  vb2_core_queue_release+0x1a/0x40
[ 5985.831089]  uvc_queue_release+0x1d/0x30
[ 5985.831093]  uvc_v4l2_release+0x9d/0xd0
[ 5985.831097]  v4l2_release+0xaa/0xb0
[ 5985.831102]  __fput+0x84/0x220
[ 5985.831107]  task_work_run+0x57/0x90
[ 5985.831112]  exit_to_user_mode_prepare+0x100/0x110
[ 5985.831125]  syscall_exit_to_user_mode+0x1d/0x40
[ 5985.831129]  entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 5985.831133] RIP: 0033:0x7f4b0a1b9b2b
[ 5985.831135] Code: 0f 05 48 3d 00 f0 ff ff 77 45 c3 0f 1f 40 00 48 83 ec 18 89 7c 24 0c e8 13 fc ff ff 8b 7c 24 0c 41 89 c0 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 2f 44 89 c7 89 44 24 0c e8 51 fc ff ff 8b 44
[ 5985.831138] RSP: 002b:00007f4b06850c70 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
[ 5985.831141] RAX: 0000000000000000 RBX: 00007f4b00005940 RCX: 00007f4b0a1b9b2b
[ 5985.831142] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000006
[ 5985.831144] RBP: 0000000000000020 R08: 0000000000000000 R09: 0000000000000000
[ 5985.831145] R10: 0000000000000001 R11: 0000000000000293 R12: 0000000000000000
[ 5985.831147] R13: 00007ffd90e2c1ef R14: 00007f4b06851700 R15: 00007f4b06850e00
[ 5985.831149] Modules linked in: rtsx_pci_sdmmc iwldvm iwlwifi r8169 rtsx_pci msi_wmi
[ 5985.831157] CR2: 0000000000000000
[ 5985.831159] ---[ end trace 4052098c3d01be39 ]---
[ 5985.831160] RIP: 0010:usb_ifnum_to_if+0x35/0x50
[ 5985.831165] Code: 34 41 0f b6 50 04 84 d2 74 2f 49 8d 80 98 00 00 00 83 ea 01 49 8d 8c d0 a0 00 00 00 eb 09 48 83 c0 08 48 39 c8 74 12 4c 8b 00 <49> 8b 10 0f b6 52 02 39 f2 75 e9 4c 89 c0 c3 45 31 c0 4c 89 c0 c3
[ 5985.831167] RSP: 0018:ffffc9000cb33db8 EFLAGS: 00010202
[ 5985.831169] RAX: ffff8881011d4098 RBX: 0000000000000001 RCX: ffff8881011d40a8
[ 5985.831171] RDX: 0000000000000001 RSI: 0000000000000001 RDI: ffff888102b99000
[ 5985.831172] RBP: ffff88810dae4600 R08: 0000000000000000 R09: 0000000000000001
[ 5985.831174] R10: ffffea000329c000 R11: dead000000000100 R12: ffff88810dae46a8
[ 5985.831175] R13: 0000000000000000 R14: ffff888102b99000 R15: ffff8881014b3800
[ 5985.831177] FS:  00007f4b06851700(0000) GS:ffff8881a9300000(0000) knlGS:0000000000000000
[ 5985.831179] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5985.831180] CR2: 0000000000000000 CR3: 000000012fd4c006 CR4: 00000000001706e0
[ 6191.720452] usb 1-1.4: new high-speed USB device number 4 using ehci-pci
[ 6191.865910] usb 1-1.4: New USB device found, idVendor=5986, idProduct=030c, bcdDevice= 3.01
[ 6191.865927] usb 1-1.4: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 6191.865932] usb 1-1.4: Product: BisonCam, NB Pro
[ 6191.865936] usb 1-1.4: Manufacturer: Bison
[ 6191.870048] usb 1-1.4: Found UVC 1.00 device BisonCam, NB Pro (5986:030c)