Page fault in UDF FS driver

From: Anatoly Trosinenko
Date: Sun Jun 03 2018 - 12:27:33 EST

When mounting corrupted UDF file system and performing specific
actions, [BUG: unable to handle kernel paging request at
ffffa136c7fe0000] occurs.

How to reproduce:
1. Compile the v4.17-rc7 kernel with the attached config
2. Unpack and mount attached FS as udf (supposing, mount point in /mnt)
3. Execute
$ echo >> /mnt/1111111111111111111111111111111111111111111111111111111111111111111111111
$ ln -s /mnt/. /mnt/foo

[ 2.296245] BUG: unable to handle kernel paging request at ffffa394c7fe0000
[ 2.296613] PGD 573e067 P4D 573e067 PUD 573f067 PMD 5742067 PTE 0
[ 2.296895] Oops: 0000 [#1] SMP NOPTI
[ 2.297062] Modules linked in:
[ 2.297298] CPU: 0 PID: 991 Comm: init Not tainted 4.17.0-rc7+ #1
[ 2.297403] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996),
BIOS 1.10.2-1ubuntu1 04/01/2014
[ 2.297899] RIP: 0010:crc_itu_t+0x1b/0x30
[ 2.297974] RSP: 0018:ffffbfb6c08d7a28 EFLAGS: 00000a86
[ 2.298088] RAX: 000000009d2ad400 RBX: ffffa394c4ff1400 RCX: 000000000000002a
[ 2.298203] RDX: ffffa394f6304549 RSI: ffffa394c7fe0001 RDI: ffffffff9444a2c0
[ 2.298307] RBP: ffffa394c6750098 R08: 0000000000000001 R09: 0000000000000001
[ 2.298409] R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000001
[ 2.298509] R13: 0000000000000010 R14: 0000000000000002 R15: 0000000000000000
[ 2.298647] FS: 0000000000ba08c0(0000) GS:ffffa394c7800000(0000)
knlGS:0000000000000000
[ 2.298764] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2.298856] CR2: ffffa394c7fe0000 CR3: 0000000005c2e000 CR4: 00000000000006f0
[ 2.299015] Call Trace:
[ 2.299478] udf_update_tag+0x19/0x40
[ 2.299653] udf_write_aext+0xa8/0x120
[ 2.299739] inode_getblk+0xa90/0x12f0
[ 2.299822] ? __wake_up_common_lock+0x84/0xb0
[ 2.299905] ? __lookup_slow+0x92/0x150
[ 2.299972] udf_get_block+0xc0/0x140
[ 2.300035] udf_getblk+0x39/0xf0
[ 2.300112] ? _cond_resched+0x10/0x40
[ 2.300178] ? __getblk_gfp+0x27/0x2a0
[ 2.300244] ? inode_bmap+0x10a/0x1c0
[ 2.300307] udf_bread+0x26/0xa0
[ 2.300364] udf_add_entry+0x3ac/0xa10
[ 2.300434] udf_add_nondir+0x50/0x150
[ 2.300541] ? udf_symlink+0x34f/0x4d0
[ 2.300605] udf_symlink+0x34f/0x4d0
[ 2.300668] vfs_symlink+0xbb/0x140
[ 2.300729] do_symlinkat+0x76/0xd0
[ 2.300792] do_syscall_64+0x43/0xf0
[ 2.300856] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 2.301058] RIP: 0033:0x487a07
[ 2.301114] RSP: 002b:00007ffcab237978 EFLAGS: 00000246 ORIG_RAX:
0000000000000058
[ 2.301234] RAX: ffffffffffffffda RBX: 0000000000ba32e0 RCX: 0000000000487a07
[ 2.301336] RDX: 0000000000000000 RSI: 0000000000ba32a8 RDI: 0000000000ba3290
[ 2.301436] RBP: 0000000000ba32a8 R08: 0000000000000000 R09: 0000000000000000
[ 2.301536] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
[ 2.301636] R13: 0000000000ba32a8 R14: 0000000000000000 R15: 0000000000000000
[ 2.301776] Code: b6 c9 66 33 04 4f 48 39 d6 75 e6 f3 c3 89 f8 c3
48 85 d2 74 27 89 f8 48 01 f2 48 c7 c7 c0 a2 44 94 48 83 c6 01 0f b6
cc c1 e0 08 <32> 4e ff 0f b6 c9 66 33 04 4f 48 39 d6 75 e7 f3 c3 89 f8
c3 90
[ 2.302793] RIP: crc_itu_t+0x1b/0x30 RSP: ffffbfb6c08d7a28
[ 2.302914] CR2: ffffa394c7fe0000
[ 2.303173] ---[ end trace fcae3e3ff19df0fb ]---

Thanks,
Anatoly
W[ 0.000000] Linux version 4.17.0-rc7+ (trosinenko@trosinenko-pc) (gcc version 7.3.0 (Ubuntu 7.3.0-16ubuntu3)) #1 SMP Sun Jun 3 16:40:58 MSK 2018
[ 0.000000] Command line: console=ttyS0
[ 0.000000] x86/fpu: x87 FPU will use FXSAVE
[ 0.000000] e820: BIOS-provided physical RAM map:
[ 0.000000] BIOS-e820: [mem 0x0000000000000000-0x000000000009fbff] usable
[ 0.000000] BIOS-e820: [mem 0x000000000009fc00-0x000000000009ffff] reserved
[ 0.000000] BIOS-e820: [mem 0x00000000000f0000-0x00000000000fffff] reserved
[ 0.000000] BIOS-e820: [mem 0x0000000000100000-0x0000000007fdffff] usable
[ 0.000000] BIOS-e820: [mem 0x0000000007fe0000-0x0000000007ffffff] reserved
[ 0.000000] BIOS-e820: [mem 0x00000000fffc0000-0x00000000ffffffff] reserved
[ 0.000000] NX (Execute Disable) protection: active
[ 0.000000] SMBIOS 2.8 present.
[ 0.000000] DMI: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014
[ 0.000000] e820: last_pfn = 0x7fe0 max_arch_pfn = 0x400000000
[ 0.000000] x86/PAT: Configuration [0-7]: WB WC UC- UC WB WP UC- WT
[ 0.000000] found SMP MP-table at [mem 0x000f6aa0-0x000f6aaf] mapped at [ (ptrval)]
[ 0.000000] Scanning 1 areas for low memory corruption
[ 0.000000] RAMDISK: [mem 0x07b2d000-0x07fdffff]
[ 0.000000] ACPI: Early table checksum verification disabled
[ 0.000000] ACPI: RSDP 0x00000000000F68C0 000014 (v00 BOCHS )
[ 0.000000] ACPI: RSDT 0x0000000007FE15FC 000030 (v01 BOCHS BXPCRSDT 00000001 BXPC 00000001)
[ 0.000000] ACPI: FACP 0x0000000007FE1458 000074 (v01 BOCHS BXPCFACP 00000001 BXPC 00000001)
[ 0.000000] ACPI: DSDT 0x0000000007FE0040 001418 (v01 BOCHS BXPCDSDT 00000001 BXPC 00000001)
[ 0.000000] ACPI: FACS 0x0000000007FE0000 000040
[ 0.000000] ACPI: APIC 0x0000000007FE154C 000078 (v01 BOCHS BXPCAPIC 00000001 BXPC 00000001)
[ 0.000000] ACPI: HPET 0x0000000007FE15C4 000038 (v01 BOCHS BXPCHPET 00000001 BXPC 00000001)
[ 0.000000] No NUMA configuration found
[ 0.000000] Faking a node at [mem 0x0000000000000000-0x0000000007fdffff]
[ 0.000000] NODE_DATA(0) allocated [mem 0x07b29000-0x07b2cfff]
[ 0.000000] tsc: Fast TSC calibration using PIT
[ 0.000000] Zone ranges:
[ 0.000000] DMA [mem 0x0000000000001000-0x0000000000ffffff]
[ 0.000000] DMA32 [mem 0x0000000001000000-0x0000000007fdffff]
[ 0.000000] Normal empty
[ 0.000000] Movable zone start for each node
[ 0.000000] Early memory node ranges
[ 0.000000] node 0: [mem 0x0000000000001000-0x000000000009efff]
[ 0.000000] node 0: [mem 0x0000000000100000-0x0000000007fdffff]
[ 0.000000] Initmem setup node 0 [mem 0x0000000000001000-0x0000000007fdffff]
[ 0.000000] Reserved but unavailable: 98 pages
[ 0.000000] ACPI: PM-Timer IO Port: 0x608
[ 0.000000] ACPI: LAPIC_NMI (acpi_id[0xff] dfl dfl lint[0x1])
[ 0.000000] IOAPIC[0]: apic_id 0, version 32, address 0xfec00000, GSI 0-23
[ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
[ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 5 global_irq 5 high level)
[ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
[ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 10 global_irq 10 high level)
[ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 11 global_irq 11 high level)
[ 0.000000] Using ACPI (MADT) for SMP configuration information
[ 0.000000] ACPI: HPET id: 0x8086a201 base: 0xfed00000
[ 0.000000] smpboot: Allowing 1 CPUs, 0 hotplug CPUs
[ 0.000000] PM: Registered nosave memory: [mem 0x00000000-0x00000fff]
[ 0.000000] PM: Registered nosave memory: [mem 0x0009f000-0x0009ffff]
[ 0.000000] PM: Registered nosave memory: [mem 0x000a0000-0x000effff]
[ 0.000000] PM: Registered nosave memory: [mem 0x000f0000-0x000fffff]
[ 0.000000] e820: [mem 0x08000000-0xfffbffff] available for PCI devices
[ 0.000000] clocksource: refined-jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 1910969940391419 ns
[ 0.000000] random: get_random_bytes called from start_kernel+0x8b/0x49f with crng_init=0
[ 0.000000] setup_percpu: NR_CPUS:64 nr_cpumask_bits:64 nr_cpu_ids:1 nr_node_ids:1
[ 0.000000] percpu: Embedded 43 pages/cpu @ (ptrval) s137304 r8192 d30632 u2097152
[ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 32105
[ 0.000000] Policy zone: DMA32
[ 0.000000] Kernel command line: console=ttyS0
[ 0.000000] Memory: 95420K/130552K available (14348K kernel code, 1363K rwdata, 3092K rodata, 1260K init, 592K bss, 35132K reserved, 0K cma-reserved)
[ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[ 0.000000] Hierarchical RCU implementation.
[ 0.000000] RCU event tracing is enabled.
[ 0.000000] RCU restricting CPUs from NR_CPUS=64 to nr_cpu_ids=1.
[ 0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=1
[ 0.000000] NR_IRQS: 4352, nr_irqs: 256, preallocated irqs: 16
[ 0.000000] Console: colour VGA+ 80x25
[ 0.000000] console [ttyS0] enabled
[ 0.000000] ACPI: Core revision 20180313
[ 0.000000] clocksource: hpet: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604467 ns
[ 0.000000] APIC: Switch to symmetric I/O mode setup
[ 0.004000] ..TIMER: vector=0x30 apic1=0 pin1=2 apic2=-1 pin2=-1
[ 0.009000] tsc: Fast TSC calibration using PIT
[ 0.010000] tsc: Detected 2808.060 MHz processor
[ 0.011350] clocksource: tsc-early: mask: 0xffffffffffffffff max_cycles: 0x2879febc7be, max_idle_ns: 440795208100 ns
[ 0.011751] Calibrating delay loop (skipped), value calculated using timer frequency.. 5616.12 BogoMIPS (lpj=2808060)
[ 0.012105] pid_max: default: 32768 minimum: 301
[ 0.012672] Security Framework initialized
[ 0.013056] SELinux: Initializing.
[ 0.014039] Dentry cache hash table entries: 16384 (order: 5, 131072 bytes)
[ 0.014280] Inode-cache hash table entries: 8192 (order: 4, 65536 bytes)
[ 0.014500] Mount-cache hash table entries: 512 (order: 0, 4096 bytes)
[ 0.014622] Mountpoint-cache hash table entries: 512 (order: 0, 4096 bytes)
[ 0.025149] mce: CPU supports 10 MCE banks
[ 0.025995] Last level iTLB entries: 4KB 0, 2MB 0, 4MB 0
[ 0.026131] Last level dTLB entries: 4KB 0, 2MB 0, 4MB 0, 1GB 0
[ 0.026275] Spectre V2 : Spectre mitigation: LFENCE not serializing, switching to generic retpoline
[ 0.026414] Spectre V2 : Mitigation: Full generic retpoline
[ 0.026516] Spectre V2 : Spectre v2 mitigation: Filling RSB on context switch
[ 0.026646] Speculative Store Bypass: Vulnerable
[ 0.256205] random: fast init done
[ 0.327891] Freeing SMP alternatives memory: 40K
[ 0.337000] APIC calibration not consistent with PM-Timer: 105ms instead of 100ms
[ 0.337000] APIC delta adjusted to PM-Timer: 6249982 (6562749)
[ 0.337000] smpboot: CPU0: AMD QEMU Virtual CPU version 2.5+ (family: 0x6, model: 0x6, stepping: 0x3)
[ 0.341184] Performance Events: PMU not available due to virtualization, using software events only.
[ 0.343727] Hierarchical SRCU implementation.
[ 0.347253] Huh? What family is it: 0x6?!
[ 0.348450] smp: Bringing up secondary CPUs ...
[ 0.349056] smp: Brought up 1 node, 1 CPU
[ 0.349447] smpboot: Max logical packages: 1
[ 0.349874] smpboot: Total of 1 processors activated (5616.12 BogoMIPS)
[ 0.358500] devtmpfs: initialized
[ 0.364513] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 1911260446275000 ns
[ 0.364887] futex hash table entries: 256 (order: 2, 16384 bytes)
[ 0.367549] RTC time: 16:20:56, date: 06/03/18
[ 0.374292] NET: Registered protocol family 16
[ 0.377101] kworker/u2:0 (16) used greatest stack depth: 14640 bytes left
[ 0.378622] audit: initializing netlink subsys (disabled)
[ 0.385161] audit: type=2000 audit(1528042856.380:1): state=initialized audit_enabled=0 res=1
[ 0.388195] kworker/u2:1 (21) used greatest stack depth: 14144 bytes left
[ 0.389735] cpuidle: using governor menu
[ 0.391164] ACPI: bus type PCI registered
[ 0.393247] PCI: Using configuration type 1 for base access
[ 0.516637] HugeTLB registered 2.00 MiB page size, pre-allocated 0 pages
[ 0.520583] ACPI: Added _OSI(Module Device)
[ 0.520695] ACPI: Added _OSI(Processor Device)
[ 0.520767] ACPI: Added _OSI(3.0 _SCP Extensions)
[ 0.520837] ACPI: Added _OSI(Processor Aggregator Device)
[ 0.521160] ACPI: Added _OSI(Linux-Dell-Video)
[ 0.532913] ACPI: 1 ACPI AML tables successfully acquired and loaded
[ 0.544705] ACPI: Interpreter enabled
[ 0.545461] ACPI: (supports S0 S3 S4 S5)
[ 0.545579] ACPI: Using IOAPIC for interrupt routing
[ 0.546346] PCI: Using host bridge windows from ACPI; if necessary, use "pci=nocrs" and report a bug
[ 0.547692] ACPI: Enabled 2 GPEs in block 00 to 0F
[ 0.605259] ACPI: PCI Root Bridge [PCI0] (domain 0000 [bus 00-ff])
[ 0.605712] acpi PNP0A03:00: _OSC: OS supports [ASPM ClockPM Segments MSI]
[ 0.606149] acpi PNP0A03:00: _OSC failed (AE_NOT_FOUND); disabling ASPM
[ 0.607095] acpi PNP0A03:00: fail to add MMCONFIG information, can't access extended PCI configuration space under this bridge.
[ 0.609424] PCI host bridge to bus 0000:00
[ 0.609621] pci_bus 0000:00: root bus resource [io 0x0000-0x0cf7 window]
[ 0.609737] pci_bus 0000:00: root bus resource [io 0x0d00-0xffff window]
[ 0.609846] pci_bus 0000:00: root bus resource [mem 0x000a0000-0x000bffff window]
[ 0.609957] pci_bus 0000:00: root bus resource [mem 0x08000000-0xfebfffff window]
[ 0.610086] pci_bus 0000:00: root bus resource [mem 0x100000000-0x17fffffff window]
[ 0.610299] pci_bus 0000:00: root bus resource [bus 00-ff]
[ 0.618359] pci 0000:00:01.1: legacy IDE quirk: reg 0x10: [io 0x01f0-0x01f7]
[ 0.618515] pci 0000:00:01.1: legacy IDE quirk: reg 0x14: [io 0x03f6]
[ 0.618636] pci 0000:00:01.1: legacy IDE quirk: reg 0x18: [io 0x0170-0x0177]
[ 0.618750] pci 0000:00:01.1: legacy IDE quirk: reg 0x1c: [io 0x0376]
[ 0.620776] pci 0000:00:01.3: quirk: [io 0x0600-0x063f] claimed by PIIX4 ACPI
[ 0.620933] pci 0000:00:01.3: quirk: [io 0x0700-0x070f] claimed by PIIX4 SMB
[ 0.642367] ACPI: PCI Interrupt Link [LNKA] (IRQs 5 *10 11)
[ 0.643640] ACPI: PCI Interrupt Link [LNKB] (IRQs 5 *10 11)
[ 0.644404] ACPI: PCI Interrupt Link [LNKC] (IRQs 5 10 *11)
[ 0.645100] ACPI: PCI Interrupt Link [LNKD] (IRQs 5 10 *11)
[ 0.645441] ACPI: PCI Interrupt Link [LNKS] (IRQs *9)
[ 0.651228] pci 0000:00:02.0: vgaarb: setting as boot VGA device
[ 0.651417] pci 0000:00:02.0: vgaarb: VGA device added: decodes=io+mem,owns=io+mem,locks=none
[ 0.651583] pci 0000:00:02.0: vgaarb: bridge control possible
[ 0.651728] vgaarb: loaded
[ 0.653881] SCSI subsystem initialized
[ 0.656571] ACPI: bus type USB registered
[ 0.657510] usbcore: registered new interface driver usbfs
[ 0.657935] usbcore: registered new interface driver hub
[ 0.658267] usbcore: registered new device driver usb
[ 0.659660] pps_core: LinuxPPS API ver. 1 registered
[ 0.659762] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@xxxxxxxx>
[ 0.662513] PTP clock support registered
[ 0.664366] EDAC MC: Ver: 3.0.0
[ 0.667198] Advanced Linux Sound Architecture Driver Initialized.
[ 0.668193] PCI: Using ACPI for IRQ routing
[ 0.676182] NetLabel: Initializing
[ 0.676272] NetLabel: domain hash size = 128
[ 0.676345] NetLabel: protocols = UNLABELED CIPSOv4 CALIPSO
[ 0.677800] NetLabel: unlabeled traffic allowed by default
[ 0.679188] HPET: 3 timers in total, 0 timers will be used for per-cpu timer
[ 0.679465] hpet0: at MMIO 0xfed00000, IRQs 2, 8, 0
[ 0.679604] hpet0: 3 comparators, 64-bit 100.000000 MHz counter
[ 0.684812] clocksource: Switched to clocksource tsc-early
[ 0.820213] VFS: Disk quotas dquot_6.6.0
[ 0.820458] VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
[ 0.822865] pnp: PnP ACPI init
[ 0.831572] pnp: PnP ACPI: found 6 devices
[ 0.880471] clocksource: acpi_pm: mask: 0xffffff max_cycles: 0xffffff, max_idle_ns: 2085701024 ns
[ 0.882321] NET: Registered protocol family 2
[ 0.886578] tcp_listen_portaddr_hash hash table entries: 256 (order: 0, 4096 bytes)
[ 0.886783] TCP established hash table entries: 1024 (order: 1, 8192 bytes)
[ 0.887003] TCP bind hash table entries: 1024 (order: 2, 16384 bytes)
[ 0.887256] TCP: Hash tables configured (established 1024 bind 1024)
[ 0.888281] UDP hash table entries: 256 (order: 1, 8192 bytes)
[ 0.888515] UDP-Lite hash table entries: 256 (order: 1, 8192 bytes)
[ 0.889657] NET: Registered protocol family 1
[ 0.891397] pci 0000:00:00.0: Limiting direct PCI/PCI transfers
[ 0.891555] pci 0000:00:01.0: PIIX3: Enabling Passive Release
[ 0.891723] pci 0000:00:01.0: Activating ISA DMA hang workarounds
[ 0.891990] pci 0000:00:02.0: Video device with shadowed ROM at [mem 0x000c0000-0x000dffff]
[ 0.895695] Unpacking initramfs...
[ 0.941535] Freeing initrd memory: 4812K
[ 0.945291] Scanning for low memory corruption every 60 seconds
[ 0.956378] Initialise system trusted keyrings
[ 0.958543] workingset: timestamp_bits=56 max_order=15 bucket_order=0
[ 1.000958] SGI XFS with ACLs, security attributes, no debug enabled
[ 1.027638] Key type asymmetric registered
[ 1.027773] Asymmetric key parser 'x509' registered
[ 1.028371] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 251)
[ 1.028604] io scheduler noop registered
[ 1.028694] io scheduler deadline registered
[ 1.029747] io scheduler cfq registered (default)
[ 1.029868] io scheduler mq-deadline registered
[ 1.029944] io scheduler kyber registered
[ 1.034220] input: Power Button as /devices/LNXSYSTM:00/LNXPWRBN:00/input/input0
[ 1.037571] ACPI: Power Button [PWRF]
[ 1.044368] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
[ 1.067140] 00:05: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a 16550A
[ 1.077611] Non-volatile memory driver v1.3
[ 1.078344] Linux agpgart interface v0.103
[ 1.107755] loop: module loaded
[ 1.120873] scsi host0: ata_piix
[ 1.123804] scsi host1: ata_piix
[ 1.124680] ata1: PATA max MWDMA2 cmd 0x1f0 ctl 0x3f6 bmdma 0xc040 irq 14
[ 1.124839] ata2: PATA max MWDMA2 cmd 0x170 ctl 0x376 bmdma 0xc048 irq 15
[ 1.129555] e100: Intel(R) PRO/100 Network Driver, 3.5.24-k2-NAPI
[ 1.129674] e100: Copyright(c) 1999-2006 Intel Corporation
[ 1.129963] e1000: Intel(R) PRO/1000 Network Driver - version 7.3.21-k8-NAPI
[ 1.130175] e1000: Copyright (c) 1999-2006 Intel Corporation.
[ 1.284095] ata1.00: ATA-7: QEMU HARDDISK, 2.5+, max UDMA/100
[ 1.284216] ata1.00: 2048 sectors, multi 16: LBA48
[ 1.285454] ata2.00: ATAPI: QEMU DVD-ROM, 2.5+, max UDMA/100
[ 1.286293] ata2.00: configured for MWDMA2
[ 1.287241] ata1.00: configured for MWDMA2
[ 1.298404] scsi 0:0:0:0: Direct-Access ATA QEMU HARDDISK 2.5+ PQ: 0 ANSI: 5
[ 1.301806] PCI Interrupt Link [LNKC] enabled at IRQ 11
[ 1.307340] sd 0:0:0:0: [sda] 2048 512-byte logical blocks: (1.05 MB/1.00 MiB)
[ 1.307960] sd 0:0:0:0: [sda] Write Protect is off
[ 1.308618] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 1.309848] sd 0:0:0:0: Attached scsi generic sg0 type 0
[ 1.312503] scsi 1:0:0:0: CD-ROM QEMU QEMU DVD-ROM 2.5+ PQ: 0 ANSI: 5
[ 1.329987] sr 1:0:0:0: [sr0] scsi3-mmc drive: 4x/4x cd/rw xa/form2 tray
[ 1.330341] cdrom: Uniform CD-ROM driver Revision: 3.20
[ 1.334532] sr 1:0:0:0: Attached scsi generic sg1 type 5
[ 1.348524] sd 0:0:0:0: [sda] Attached SCSI disk
[ 1.611316] e1000 0000:00:03.0 eth0: (PCI:33MHz:32-bit) 52:54:00:12:34:56
[ 1.611583] e1000 0000:00:03.0 eth0: Intel(R) PRO/1000 Network Connection
[ 1.612818] e1000e: Intel(R) PRO/1000 Network Driver - 3.2.6-k
[ 1.612948] e1000e: Copyright(c) 1999 - 2015 Intel Corporation.
[ 1.613728] sky2: driver version 1.30
[ 1.616907] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[ 1.617208] ehci-pci: EHCI PCI platform driver
[ 1.617649] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[ 1.617985] ohci-pci: OHCI PCI platform driver
[ 1.620753] uhci_hcd: USB Universal Host Controller Interface driver
[ 1.621647] usbcore: registered new interface driver usblp
[ 1.621985] usbcore: registered new interface driver usb-storage
[ 1.623696] i8042: PNP: PS/2 Controller [PNP0303:KBD,PNP0f13:MOU] at 0x60,0x64 irq 1,12
[ 1.627897] serio: i8042 KBD port at 0x60,0x64 irq 1
[ 1.628306] serio: i8042 AUX port at 0x60,0x64 irq 12
[ 1.633720] input: AT Translated Set 2 keyboard as /devices/platform/i8042/serio0/input/input1
[ 1.637964] rtc_cmos 00:00: RTC can wake from S4
[ 1.644572] rtc_cmos 00:00: registered as rtc0
[ 1.646497] rtc_cmos 00:00: alarms up to one day, y3k, 114 bytes nvram, hpet irqs
[ 1.650030] device-mapper: ioctl: 4.39.0-ioctl (2018-04-03) initialised: dm-devel@xxxxxxxxxx
[ 1.652678] hidraw: raw HID events driver (C) Jiri Kosina
[ 1.661694] usbcore: registered new interface driver usbhid
[ 1.661841] usbhid: USB HID core driver
[ 1.674543] Initializing XFRM netlink socket
[ 1.677433] NET: Registered protocol family 10
[ 1.684890] Segment Routing with IPv6
[ 1.687394] sit: IPv6, IPv4 and MPLS over IPv4 tunneling driver
[ 1.690205] NET: Registered protocol family 17
[ 1.690471] Key type dns_resolver registered
[ 1.692918] sched_clock: Marking stable (1692061351, 0)->(1790236173, -98174822)
[ 1.697498] registered taskstats version 1
[ 1.697614] Loading compiled-in X.509 certificates
[ 1.701558] Magic number: 6:193:337
[ 1.701816] tty tty58: hash matches
[ 1.702418] console [netcon0] enabled
[ 1.702510] netconsole: network logging started
[ 1.704322] cfg80211: Loading compiled-in X.509 certificates for regulatory database
[ 1.733603] cfg80211: Loaded X.509 cert 'sforshee: 00b28ddf47aef9cea7'
[ 1.738570] ALSA device list:
[ 1.738679] No soundcards found.
[ 1.739867] platform regulatory.0: Direct firmware load for regulatory.db failed with error -2
[ 1.740308] cfg80211: failed to load regulatory.db
[ 1.759567] Freeing unused kernel memory: 1260K
[ 1.761244] Write protecting the kernel read-only data: 20480k
[ 1.763844] Freeing unused kernel memory: 2004K
[ 1.771766] Freeing unused kernel memory: 1004K
[ 2.296245] BUG: unable to handle kernel paging request at ffffa394c7fe0000
[ 2.296613] PGD 573e067 P4D 573e067 PUD 573f067 PMD 5742067 PTE 0
[ 2.296895] Oops: 0000 [#1] SMP NOPTI
[ 2.297062] Modules linked in:
[ 2.297298] CPU: 0 PID: 991 Comm: init Not tainted 4.17.0-rc7+ #1
[ 2.297403] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014
[ 2.297899] RIP: 0010:crc_itu_t+0x1b/0x30
[ 2.297974] RSP: 0018:ffffbfb6c08d7a28 EFLAGS: 00000a86
[ 2.298088] RAX: 000000009d2ad400 RBX: ffffa394c4ff1400 RCX: 000000000000002a
[ 2.298203] RDX: ffffa394f6304549 RSI: ffffa394c7fe0001 RDI: ffffffff9444a2c0
[ 2.298307] RBP: ffffa394c6750098 R08: 0000000000000001 R09: 0000000000000001
[ 2.298409] R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000001
[ 2.298509] R13: 0000000000000010 R14: 0000000000000002 R15: 0000000000000000
[ 2.298647] FS: 0000000000ba08c0(0000) GS:ffffa394c7800000(0000) knlGS:0000000000000000
[ 2.298764] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2.298856] CR2: ffffa394c7fe0000 CR3: 0000000005c2e000 CR4: 00000000000006f0
[ 2.299015] Call Trace:
[ 2.299478] udf_update_tag+0x19/0x40
[ 2.299653] udf_write_aext+0xa8/0x120
[ 2.299739] inode_getblk+0xa90/0x12f0
[ 2.299822] ? __wake_up_common_lock+0x84/0xb0
[ 2.299905] ? __lookup_slow+0x92/0x150
[ 2.299972] udf_get_block+0xc0/0x140
[ 2.300035] udf_getblk+0x39/0xf0
[ 2.300112] ? _cond_resched+0x10/0x40
[ 2.300178] ? __getblk_gfp+0x27/0x2a0
[ 2.300244] ? inode_bmap+0x10a/0x1c0
[ 2.300307] udf_bread+0x26/0xa0
[ 2.300364] udf_add_entry+0x3ac/0xa10
[ 2.300434] udf_add_nondir+0x50/0x150
[ 2.300541] ? udf_symlink+0x34f/0x4d0
[ 2.300605] udf_symlink+0x34f/0x4d0
[ 2.300668] vfs_symlink+0xbb/0x140
[ 2.300729] do_symlinkat+0x76/0xd0
[ 2.300792] do_syscall_64+0x43/0xf0
[ 2.300856] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 2.301058] RIP: 0033:0x487a07
[ 2.301114] RSP: 002b:00007ffcab237978 EFLAGS: 00000246 ORIG_RAX: 0000000000000058
[ 2.301234] RAX: ffffffffffffffda RBX: 0000000000ba32e0 RCX: 0000000000487a07
[ 2.301336] RDX: 0000000000000000 RSI: 0000000000ba32a8 RDI: 0000000000ba3290
[ 2.301436] RBP: 0000000000ba32a8 R08: 0000000000000000 R09: 0000000000000000
[ 2.301536] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
[ 2.301636] R13: 0000000000ba32a8 R14: 0000000000000000 R15: 0000000000000000
[ 2.301776] Code: b6 c9 66 33 04 4f 48 39 d6 75 e6 f3 c3 89 f8 c3 48 85 d2 74 27 89 f8 48 01 f2 48 c7 c7 c0 a2 44 94 48 83 c6 01 0f b6 cc c1 e0 08 <32> 4e ff 0f b6 c9 66 33 04 4f 48 39 d6 75 e7 f3 c3 89 f8 c3 90
[ 2.302793] RIP: crc_itu_t+0x1b/0x30 RSP: ffffbfb6c08d7a28
[ 2.302914] CR2: ffffa394c7fe0000
[ 2.303173] ---[ end trace fcae3e3ff19df0fb ]---
[ 2.303991] tsc: Refined TSC clocksource calibration: 2808.022 MHz
[ 2.304478] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x2879db23480, max_idle_ns: 440795344018 ns
[ 2.305891] clocksource: Switched to clocksource tsc
[ 2.306722] init (991) used greatest stack depth: 13032 bytes left
Killed


BusyBox v1.27.2 (Ubuntu 1:1.27.2-2ubuntu3) built-in shell (ash)
Enter 'help' for a list of built-in commands.

/bin/sh: can't access tty; job control turned off
/ # [ 2.508355] input: ImExPS/2 Generic Explorer Mouse as /devices/platform/i8042/serio1/input/input3

Attachment: config_v4.17-rc7
Description: Binary data

Attachment: udf_1mb.img.bz2
Description: Binary data