ooting the kernel. [ 0.000000] Linux version 4.17.0+ (syzkaller@ci) (gcc version 8.0.1 20180413 (experimental) (GCC)) #83 SMP Fri Jun 8 02:48:39 UTC 2018 [ 0.000000] Command line: BOOT_IMAGE=/vmlinuz root=/dev/sda1 console=ttyS0 earlyprintk=serial vsyscall=native rodata=n ftrace_dump_on_oops=orig_cpu oops=panic panic_on_warn=1 nmi_watchdog=panic panic=86400 kvm-intel.nested=1 nf-conntrack-ftp.ports=20000 nf-conntrack-tftp.ports=20000 nf-conntrack-sip.ports=20000 nf-conntrack-irc.ports=20000 nf-conntrack-sane.ports=20000 nopcid [ 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 0x0000000000000000-0x000000000009fbff] usable [ 0.000000] BIOS-e820: [mem 0x000000000009fc00-0x000000000009ffff] reserved [ 0.000000] BIOS-e820: [mem 0x00000000000f0000-0x00000000000fffff] reserved [ 0.000000] BIOS-e820: [mem 0x0000000000100000-0x00000000bfff2fff] usable [ 0.000000] BIOS-e820: [mem 0x00000000bfff3000-0x00000000bfffffff] reserved [ 0.000000] BIOS-e820: [mem 0x00000000fffbc000-0x00000000ffffffff] reserved [ 0.000000] BIOS-e820: [mem 0x0000000100000000-0x000000021fffffff] usable [ 0.000000] bootconsole [earlyser0] enabled [ 0.000000] Malformed early option 'vsyscall' [ 0.000000] nopcid: PCID feature disabled [ 0.000000] NX (Execute Disable) protection: active [ 0.000000] SMBIOS 2.4 present. [ 0.000000] DMI: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 0.000000] Hypervisor detected: KVM [ 0.000000] last_pfn = 0x220000 max_arch_pfn = 0x400000000 [ 0.000000] x86/PAT: Configuration [0-7]: WB WC UC- UC WB WP UC- WT [ 0.000000] last_pfn = 0xbfff3 max_arch_pfn = 0x400000000 [ 0.000000] found SMP MP-table at [mem 0x000f22b0-0x000f22bf] mapped at [(____ptrval____)] [ 0.000000] Scanning 1 areas for low memory corruption [ 0.000000] Using GB pages for direct mapping [ 0.000000] ACPI: Early table checksum verification disabled [ 0.000000] ACPI: RSDP 0x00000000000F2270 000014 (v00 Google) [ 0.000000] ACPI: RSDT 0x00000000BFFF3430 000038 (v01 Google GOOGRSDT 00000001 GOOG 00000001) [ 0.000000] ACPI: FACP 0x00000000BFFFCF60 0000F4 (v02 Google GOOGFACP 00000001 GOOG 00000001) [ 0.000000] ACPI: DSDT 0x00000000BFFF3470 0017B2 (v01 Google GOOGDSDT 00000001 GOOG 00000001) [ 0.000000] ACPI: FACS 0x00000000BFFFCF00 000040 [ 0.000000] ACPI: FACS 0x00000000BFFFCF00 000040 [ 0.000000] ACPI: SSDT 0x00000000BFFF65F0 00690D (v01 Google GOOGSSDT 00000001 GOOG 00000001) [ 0.000000] ACPI: APIC 0x00000000BFFF5D10 000076 (v01 Google GOOGAPIC 00000001 GOOG 00000001) [ 0.000000] ACPI: WAET 0x00000000BFFF5CE0 000028 (v01 Google GOOGWAET 00000001 GOOG 00000001) [ 0.000000] ACPI: SRAT 0x00000000BFFF4C30 0000C8 (v01 Google GOOGSRAT 00000001 GOOG 00000001) [ 0.000000] SRAT: PXM 0 -> APIC 0x00 -> Node 0 [ 0.000000] SRAT: PXM 0 -> APIC 0x01 -> Node 0 [ 0.000000] ACPI: SRAT: Node 0 PXM 0 [mem 0x00000000-0x0009ffff] [ 0.000000] ACPI: SRAT: Node 0 PXM 0 [mem 0x00100000-0xbfffffff] [ 0.000000] ACPI: SRAT: Node 0 PXM 0 [mem 0x100000000-0x21fffffff] [ 0.000000] NUMA: Node 0 [mem 0x00000000-0x0009ffff] + [mem 0x00100000-0xbfffffff] -> [mem 0x00000000-0xbfffffff] [ 0.000000] NUMA: Node 0 [mem 0x00000000-0xbfffffff] + [mem 0x100000000-0x21fffffff] -> [mem 0x00000000-0x21fffffff] [ 0.000000] NODE_DATA(0) allocated [mem 0x21fffa000-0x21fffdfff] [ 0.000000] kvm-clock: cpu 0, msr 2:1fff8001, primary cpu clock [ 0.000000] kvm-clock: Using msrs 4b564d01 and 4b564d00 [ 0.000000] kvm-clock: using sched offset of 3096916642 cycles [ 0.000000] clocksource: kvm-clock: mask: 0xffffffffffffffff max_cycles: 0x1cd42e4dffb, max_idle_ns: 881590591483 ns [ 0.000000] Zone ranges: [ 0.000000] DMA [mem 0x0000000000001000-0x0000000000ffffff] [ 0.000000] DMA32 [mem 0x0000000001000000-0x00000000ffffffff] [ 0.000000] Normal [mem 0x0000000100000000-0x000000021fffffff] [ 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 0x0000000000100000-0x00000000bfff2fff] [ 0.000000] node 0: [mem 0x0000000100000000-0x000000021fffffff] [ 0.000000] Initmem setup node 0 [mem 0x0000000000001000-0x000000021fffffff] [ 0.000000] Reserved but unavailable: 98 pages [ 0.000000] kasan: KernelAddressSanitizer initialized [ 0.000000] ACPI: PM-Timer IO Port: 0xb008 [ 0.000000] ACPI: LAPIC_NMI (acpi_id[0xff] dfl dfl lint[0x1]) [ 0.000000] IOAPIC[0]: apic_id 0, version 17, address 0xfec00000, GSI 0-23 [ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 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] smpboot: Allowing 2 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] PM: Registered nosave memory: [mem 0xbfff3000-0xbfffffff] [ 0.000000] PM: Registered nosave memory: [mem 0xc0000000-0xfffbbfff] [ 0.000000] PM: Registered nosave memory: [mem 0xfffbc000-0xffffffff] [ 0.000000] [mem 0xc0000000-0xfffbbfff] available for PCI devices [ 0.000000] Booting paravirtualized kernel on KVM [ 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+0x10a/0x92d with crng_init=0 [ 0.000000] setup_percpu: NR_CPUS:64 nr_cpumask_bits:64 nr_cpu_ids:2 nr_node_ids:1 [ 0.000000] percpu: Embedded 56 pages/cpu @(____ptrval____) s188488 r8192 d32696 u1048576 [ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 1935228 [ 0.000000] Policy zone: Normal [ 0.000000] Kernel command line: BOOT_IMAGE=/vmlinuz root=/dev/sda1 console=ttyS0 earlyprintk=serial vsyscall=native rodata=n ftrace_dump_on_oops=orig_cpu oops=panic panic_on_warn=1 nmi_watchdog=panic panic=86400 kvm-intel.nested=1 nf-conntrack-ftp.ports=20000 nf-conntrack-tftp.ports=20000 nf-conntrack-sip.ports=20000 nf-conntrack-irc.ports=20000 nf-conntrack-sane.ports=20000 nopcid [ 0.000000] Memory: 6499860K/7863876K available (110620K kernel code, 12275K rwdata, 16032K rodata, 3952K init, 23144K bss, 1364016K reserved, 0K cma-reserved) [ 0.001000] Running RCU self tests [ 0.001000] Hierarchical RCU implementation. [ 0.001000] RCU lockdep checking is enabled. [ 0.001000] RCU restricting CPUs from NR_CPUS=64 to nr_cpu_ids=2. [ 0.001000] RCU callback double-/use-after-free debug enabled. [ 0.001000] RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2 [ 0.001000] NR_IRQS: 4352, nr_irqs: 440, preallocated irqs: 16 [ 0.001000] Console: colour VGA+ 80x25 [ 0.001000] console [ttyS0] enabled [ 0.001000] console [ttyS0] enabled [ 0.001000] bootconsole [earlyser0] disabled [ 0.001000] bootconsole [earlyser0] disabled [ 0.001000] Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar [ 0.001000] ... MAX_LOCKDEP_SUBCLASSES: 8 [ 0.001000] ... MAX_LOCK_DEPTH: 48 [ 0.001000] ... MAX_LOCKDEP_KEYS: 8191 [ 0.001000] ... CLASSHASH_SIZE: 4096 [ 0.001000] ... MAX_LOCKDEP_ENTRIES: 32768 [ 0.001000] ... MAX_LOCKDEP_CHAINS: 65536 [ 0.001000] ... CHAINHASH_SIZE: 32768 [ 0.001000] memory used by lock dependency info: 7391 kB [ 0.001000] per task-struct memory footprint: 1920 bytes [ 0.001000] ACPI: Core revision 20180508 [ 0.001000] APIC: Switch to symmetric I/O mode setup [ 0.001265] x2apic enabled [ 0.002017] Switched APIC routing to physical x2apic. [ 0.006893] ..TIMER: vector=0x30 apic1=0 pin1=0 apic2=-1 pin2=-1 [ 0.007000] tsc: Detected 2300.000 MHz processor [ 0.007036] clocksource: tsc-early: mask: 0xffffffffffffffff max_cycles: 0x212735223b2, max_idle_ns: 440795277976 ns [ 0.008025] Calibrating delay loop (skipped) preset value.. 4600.00 BogoMIPS (lpj=2300000) [ 0.009009] pid_max: default: 32768 minimum: 301 [ 0.010458] Security Framework initialized [ 0.011013] Yama: becoming mindful. [ 0.011549] SELinux: Initializing. [ 0.012369] AppArmor: AppArmor disabled by boot time parameter [ 0.018363] Dentry cache hash table entries: 1048576 (order: 11, 8388608 bytes) [ 0.021461] Inode-cache hash table entries: 524288 (order: 10, 4194304 bytes) [ 0.022138] Mount-cache hash table entries: 16384 (order: 5, 131072 bytes) [ 0.024023] Mountpoint-cache hash table entries: 16384 (order: 5, 131072 bytes) [ 0.027324] CPU: Physical Processor ID: 0 [ 0.027943] mce: CPU supports 32 MCE banks [ 0.028146] Last level iTLB entries: 4KB 1024, 2MB 1024, 4MB 1024 [ 0.029009] Last level dTLB entries: 4KB 1024, 2MB 1024, 4MB 1024, 1GB 4 [ 0.030025] Spectre V2 : Mitigation: Full generic retpoline [ 0.031007] Speculative Store Bypass: Vulnerable [ 0.032596] Freeing SMP alternatives memory: 64K [ 0.035000] smpboot: CPU0: Intel(R) Xeon(R) CPU @ 2.30GHz (family: 0x6, model: 0x3f, stepping: 0x0) [ 0.036162] Performance Events: unsupported p6 CPU model 63 no PMU driver, software events only. [ 0.037226] Hierarchical SRCU implementation. [ 0.038509] NMI watchdog: Perf event create on CPU 0 failed with -2 [ 0.039009] NMI watchdog: Perf NMI watchdog permanently disabled [ 0.040415] smp: Bringing up secondary CPUs ... [ 0.043179] x86: Booting SMP configuration: [ 0.043805] .... node #0, CPUs: #1 [ 0.001000] kvm-clock: cpu 1, msr 2:1fff8041, secondary cpu clock [ 0.047268] smp: Brought up 1 node, 2 CPUs [ 0.048035] smpboot: Max logical packages: 1 [ 0.048678] smpboot: Total of 2 processors activated (9200.00 BogoMIPS) [ 0.051580] devtmpfs: initialized [ 0.062777] kworker/u4:0 (24) used greatest stack depth: 23064 bytes left [ 0.065097] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 1911260446275000 ns [ 0.066064] futex hash table entries: 512 (order: 4, 65536 bytes) [ 0.068268] xor: automatically using best checksumming function avx [ 0.069624] RTC time: 2:53:04, date: 06/08/18 [ 0.078317] NET: Registered protocol family 16 [ 0.081124] audit: initializing netlink subsys (disabled) [ 0.082085] audit: type=2000 audit(1528426384.086:1): state=initialized audit_enabled=0 res=1 [ 0.084736] cpuidle: using governor menu [ 0.088334] ACPI: bus type PCI registered [ 0.090360] PCI: Using configuration type 1 for base access [ 0.171790] kworker/u4:4 (318) used greatest stack depth: 20968 bytes left [ 0.367261] HugeTLB registered 2.00 MiB page size, pre-allocated 0 pages [ 0.370122] cryptd: max_cpu_qlen set to 1000 [ 0.389020] raid6: sse2x1 gen() 1750 MB/s [ 0.406025] raid6: sse2x1 xor() 1003 MB/s [ 0.423024] raid6: sse2x2 gen() 3554 MB/s [ 0.440029] raid6: sse2x2 xor() 1851 MB/s [ 0.457020] raid6: sse2x4 gen() 6019 MB/s [ 0.474011] raid6: sse2x4 xor() 3335 MB/s [ 0.491020] raid6: avx2x1 gen() 4261 MB/s [ 0.508021] raid6: avx2x1 xor() 1955 MB/s [ 0.525017] raid6: avx2x2 gen() 7261 MB/s [ 0.542011] raid6: avx2x2 xor() 3935 MB/s [ 0.559014] raid6: avx2x4 gen() 11765 MB/s [ 0.576014] raid6: avx2x4 xor() 6283 MB/s [ 0.576663] raid6: using algorithm avx2x4 gen() 11765 MB/s [ 0.577010] raid6: .... xor() 6283 MB/s, rmw enabled [ 0.578010] raid6: using avx2x2 recovery algorithm [ 0.579748] ACPI: Added _OSI(Module Device) [ 0.580030] ACPI: Added _OSI(Processor Device) [ 0.581061] ACPI: Added _OSI(3.0 _SCP Extensions) [ 0.581714] ACPI: Added _OSI(Processor Aggregator Device) [ 0.582021] ACPI: Added _OSI(Linux-Dell-Video) [ 0.774057] ACPI: 2 ACPI AML tables successfully acquired and loaded [ 1.265494] ACPI: Interpreter enabled [ 1.266228] ACPI: (supports S0 S3 S4 S5) [ 1.266784] ACPI: Using IOAPIC for interrupt routing [ 1.267215] PCI: Using host bridge windows from ACPI; if necessary, use "pci=nocrs" and report a bug [ 1.270000] ACPI: Enabled 16 GPEs in block 00 to 0F [ 1.868046] ACPI: PCI Root Bridge [PCI0] (domain 0000 [bus 00-ff]) [ 1.869044] acpi PNP0A03:00: _OSC: OS supports [ASPM ClockPM Segments MSI] [ 1.870147] acpi PNP0A03:00: _OSC failed (AE_NOT_FOUND); disabling ASPM [ 1.872121] acpi PNP0A03:00: fail to add MMCONFIG information, can't access extended PCI configuration space under this bridge. [ 1.877507] PCI host bridge to bus 0000:00 [ 1.878024] pci_bus 0000:00: root bus resource [io 0x0000-0x0cf7 window] [ 1.879019] pci_bus 0000:00: root bus resource [io 0x0d00-0xffff window] [ 1.880019] pci_bus 0000:00: root bus resource [mem 0x000a0000-0x000bffff window] [ 1.881019] pci_bus 0000:00: root bus resource [mem 0xc0000000-0xfebfffff window] [ 1.882024] pci_bus 0000:00: root bus resource [bus 00-ff] [ 1.913180] pci 0000:00:01.3: quirk: [io 0xb000-0xb03f] claimed by PIIX4 ACPI [ 1.966239] ACPI: PCI Interrupt Link [LNKA] (IRQs 5 *10 11) [ 1.969371] ACPI: PCI Interrupt Link [LNKB] (IRQs 5 *10 11) [ 1.972447] ACPI: PCI Interrupt Link [LNKC] (IRQs 5 10 *11) [ 1.975597] ACPI: PCI Interrupt Link [LNKD] (IRQs 5 10 *11) [ 1.978776] ACPI: PCI Interrupt Link [LNKS] (IRQs *9) [ 2.339098] vgaarb: loaded [ 2.341120] SCSI subsystem initialized [ 2.343074] ACPI: bus type USB registered [ 2.344283] usbcore: registered new interface driver usbfs [ 2.345277] usbcore: registered new interface driver hub [ 2.346193] usbcore: registered new device driver usb [ 2.348497] pps_core: LinuxPPS API ver. 1 registered [ 2.349017] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti [ 2.351040] PTP clock support registered [ 2.353038] EDAC MC: Ver: 3.0.0 [ 2.357153] Advanced Linux Sound Architecture Driver Initialized. [ 2.358594] PCI: Using ACPI for IRQ routing [ 2.361749] Bluetooth: Core ver 2.22 [ 2.362244] NET: Registered protocol family 31 [ 2.363012] Bluetooth: HCI device and connection manager initialized [ 2.364033] Bluetooth: HCI socket layer initialized [ 2.365018] Bluetooth: L2CAP socket layer initialized [ 2.365845] Bluetooth: SCO socket layer initialized [ 2.366049] NET: Registered protocol family 8 [ 2.367009] NET: Registered protocol family 20 [ 2.368042] NetLabel: Initializing [ 2.368676] NetLabel: domain hash size = 128 [ 2.369009] NetLabel: protocols = UNLABELED CIPSOv4 CALIPSO [ 2.370228] NetLabel: unlabeled traffic allowed by default [ 2.372341] nfc: nfc_init: NFC Core ver 0.1 [ 2.373103] NET: Registered protocol family 39 [ 2.375010] clocksource: Switched to clocksource kvm-clock [ 2.846784] VFS: Disk quotas dquot_6.6.0 [ 2.847571] VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes) [ 2.848974] FS-Cache: Loaded [ 2.850147] CacheFiles: Loaded [ 2.850965] pnp: PnP ACPI init [ 2.861465] pnp: PnP ACPI: found 7 devices [ 2.902840] clocksource: acpi_pm: mask: 0xffffff max_cycles: 0xffffff, max_idle_ns: 2085701024 ns [ 2.904929] NET: Registered protocol family 2 [ 2.907427] tcp_listen_portaddr_hash hash table entries: 4096 (order: 6, 294912 bytes) [ 2.909141] TCP established hash table entries: 65536 (order: 7, 524288 bytes) [ 2.912407] TCP bind hash table entries: 65536 (order: 10, 4194304 bytes) [ 2.919951] TCP: Hash tables configured (established 65536 bind 65536) [ 2.921402] UDP hash table entries: 4096 (order: 7, 655360 bytes) [ 2.923908] UDP-Lite hash table entries: 4096 (order: 7, 655360 bytes) [ 2.926173] NET: Registered protocol family 1 [ 2.928473] RPC: Registered named UNIX socket transport module. [ 2.929371] RPC: Registered udp transport module. [ 2.930100] RPC: Registered tcp transport module. [ 2.930750] RPC: Registered tcp NFSv4.1 backchannel transport module. [ 2.932741] NET: Registered protocol family 44 [ 2.933534] pci 0000:00:00.0: Limiting direct PCI/PCI transfers [ 2.935117] PCI-DMA: Using software bounce buffering for IO (SWIOTLB) [ 2.936050] software IO TLB [mem 0xbbff3000-0xbfff3000] (64MB) mapped at [(____ptrval____)-(____ptrval____)] [ 2.938648] RAPL PMU: API unit is 2^-32 Joules, 3 fixed counters, 10737418240 ms ovfl timer [ 2.939891] RAPL PMU: hw unit of domain pp0-core 2^-0 Joules [ 2.941058] RAPL PMU: hw unit of domain package 2^-0 Joules [ 2.941823] RAPL PMU: hw unit of domain dram 2^-16 Joules [ 2.944549] kvm: already loaded the other module [ 2.945670] Machine check injector initialized [ 2.950605] Scanning for low memory corruption every 60 seconds [ 2.986428] Initialise system trusted keyrings [ 2.987971] workingset: timestamp_bits=40 max_order=21 bucket_order=0 [ 2.992976] DLM installed [ 2.995425] NFS: Registering the id_resolver key type [ 2.996368] Key type id_resolver registered [ 2.996974] Key type id_legacy registered [ 2.997580] nfs4filelayout_init: NFSv4 File Layout Driver Registering... [ 2.998562] Installing knfsd (copyright (C) 1996 okir@monad.swb.de). [ 3.001453] ntfs: driver 2.1.32 [Flags: R/W]. [ 3.002616] fuse init (API version 7.27) [ 3.004772] JFS: nTxBlock = 8192, nTxLock = 65536 [ 3.013400] SGI XFS with ACLs, security attributes, realtime, no debug enabled [ 3.016582] 9p: Installing v9fs 9p2000 file system support [ 3.017595] FS-Cache: Netfs '9p' registered for caching [ 3.021271] gfs2: GFS2 installed [ 3.022605] FS-Cache: Netfs 'ceph' registered for caching [ 3.023416] ceph: loaded (mds proto 32) [ 3.053775] NET: Registered protocol family 38 [ 3.055602] async_tx: api initialized (async) [ 3.056522] Key type asymmetric registered [ 3.057267] Asymmetric key parser 'x509' registered [ 3.057961] Key type pkcs7_test registered [ 3.058743] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 250) [ 3.060317] io scheduler noop registered [ 3.060881] io scheduler deadline registered [ 3.061773] io scheduler cfq registered (default) [ 3.062481] io scheduler mq-deadline registered [ 3.063169] io scheduler kyber registered [ 3.063830] io scheduler bfq registered [ 3.068445] input: Power Button as /devices/LNXSYSTM:00/LNXPWRBN:00/input/input0 [ 3.070082] ACPI: Power Button [PWRF] [ 3.071340] input: Sleep Button as /devices/LNXSYSTM:00/LNXSLPBN:00/input/input1 [ 3.072728] ACPI: Sleep Button [SLPF] [ 3.087591] PCI Interrupt Link [LNKC] enabled at IRQ 11 [ 3.088528] virtio-pci 0000:00:03.0: virtio_pci: leaving for legacy driver [ 3.099470] PCI Interrupt Link [LNKD] enabled at IRQ 10 [ 3.100410] virtio-pci 0000:00:04.0: virtio_pci: leaving for legacy driver [ 3.105611] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled [ 3.128954] 00:03: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a 16550A [ 3.154063] 00:04: ttyS1 at I/O 0x2f8 (irq = 3, base_baud = 115200) is a 16550A [ 3.178806] 00:05: ttyS2 at I/O 0x3e8 (irq = 6, base_baud = 115200) is a 16550A [ 3.203499] 00:06: ttyS3 at I/O 0x2e8 (irq = 7, base_baud = 115200) is a 16550A [ 3.210207] Non-volatile memory driver v1.3 [ 3.211917] Linux agpgart interface v0.103 [ 3.214461] [drm] radeon kernel modesetting enabled. [ 3.216277] [drm] amdgpu kernel modesetting enabled. [ 3.253720] brd: module loaded [ 3.273315] loop: module loaded [ 3.315901] null: module loaded [ 3.319454] nfcsim 0.2 initialized [ 3.320795] Loading iSCSI transport class v2.0-870. [ 3.336436] scsi host0: Virtio SCSI HBA [ 3.385711] scsi 0:0:1:0: Direct-Access Google PersistentDisk 1 PQ: 0 ANSI: 6 [ 3.714915] random: fast init done [ 3.999298] tsc: Refined TSC clocksource calibration: 2299.797 MHz [ 4.000996] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x212675491f4, max_idle_ns: 440795258396 ns [ 4.126674] sd 0:0:1:0: [sda] 4194304 512-byte logical blocks: (2.15 GB/2.00 GiB) [ 4.128468] sd 0:0:1:0: [sda] 4096-byte physical blocks [ 4.128896] sd 0:0:1:0: Attached scsi generic sg0 type 0 [ 4.129932] sd 0:0:1:0: [sda] Write Protect is off [ 4.132673] sd 0:0:1:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA [ 4.134540] Ethernet Channel Bonding Driver: v3.7.1 (April 27, 2011) [ 4.140354] sda: sda1 [ 4.145571] sd 0:0:1:0: [sda] Attached SCSI disk [ 4.156201] eql: Equalizer2002: Simon Janes (simon@ncm.com) and David S. Miller (davem@redhat.com) [ 4.162506] MACsec IEEE 802.1AE [ 4.163722] tun: Universal TUN/TAP device driver, 1.6 [ 4.189008] vcan: Virtual CAN interface driver [ 4.190100] vxcan: Virtual CAN Tunnel driver [ 4.191103] slcan: serial line CAN interface driver [ 4.192221] slcan: 10 dynamic interface channels. [ 4.193355] CAN device driver interface [ 4.194598] enic: Cisco VIC Ethernet NIC Driver, ver 2.3.0.53 [ 4.196222] e100: Intel(R) PRO/100 Network Driver, 3.5.24-k2-NAPI [ 4.197530] e100: Copyright(c) 1999-2006 Intel Corporation [ 4.198946] e1000: Intel(R) PRO/1000 Network Driver - version 7.3.21-k8-NAPI [ 4.200447] e1000: Copyright (c) 1999-2006 Intel Corporation. [ 4.201873] e1000e: Intel(R) PRO/1000 Network Driver - 3.2.6-k [ 4.203312] e1000e: Copyright(c) 1999 - 2015 Intel Corporation. [ 4.204763] sky2: driver version 1.30 [ 4.206776] PPP generic driver version 2.4.2 [ 4.208490] PPP BSD Compression module registered [ 4.209713] PPP Deflate Compression module registered [ 4.211056] PPP MPPE Compression module registered [ 4.212109] NET: Registered protocol family 24 [ 4.213225] PPTP driver version 0.8.5 [ 4.214705] mac80211_hwsim: initializing netlink [ 4.228286] usbcore: registered new interface driver asix [ 4.229791] usbcore: registered new interface driver ax88179_178a [ 4.231310] usbcore: registered new interface driver cdc_ether [ 4.232747] usbcore: registered new interface driver net1080 [ 4.234307] usbcore: registered new interface driver cdc_subset [ 4.235571] usbcore: registered new interface driver zaurus [ 4.236888] usbcore: registered new interface driver cdc_ncm [ 4.243688] aoe: AoE v85 initialised. [ 4.246491] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver [ 4.247865] ehci-pci: EHCI PCI platform driver [ 4.249264] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver [ 4.250512] ohci-pci: OHCI PCI platform driver [ 4.251398] uhci_hcd: USB Universal Host Controller Interface driver [ 4.253040] usbcore: registered new interface driver usblp [ 4.254336] usbcore: registered new interface driver usb-storage [ 4.256108] i8042: PNP: PS/2 Controller [PNP0303:KBD,PNP0f13:MOU] at 0x60,0x64 irq 1,12 [ 4.258505] i8042: Warning: Keylock active [ 4.260903] serio: i8042 KBD port at 0x60,0x64 irq 1 [ 4.261827] serio: i8042 AUX port at 0x60,0x64 irq 12 [ 4.265225] mousedev: PS/2 mouse device common for all mice [ 4.269574] rtc_cmos 00:00: RTC can wake from S4 [ 4.271886] rtc_cmos 00:00: registered as rtc0 [ 4.273135] rtc_cmos 00:00: nvmem registration failed [ 4.274511] rtc_cmos 00:00: alarms up to one day, 114 bytes nvram [ 4.276173] i2c /dev entries driver [ 4.278959] piix4_smbus 0000:00:01.3: SMBus base address uninitialized - upgrade BIOS or use force_addr=0xaddr [ 4.281672] i2c-parport-light: adapter type unspecified [ 4.283093] usbcore: registered new interface driver RobotFuzz Open Source InterFace, OSIF [ 4.285092] usbcore: registered new interface driver i2c-tiny-usb [ 4.288710] device-mapper: ioctl: 4.39.0-ioctl (2018-04-03) initialised: dm-devel@redhat.com [ 4.291848] device-mapper: raid: Loading target version 1.13.2 [ 4.293501] usbcore: registered new interface driver btusb [ 4.296243] usnic_verbs: Cisco VIC (USNIC) Verbs Driver v1.0.3 (December 19, 2013) [ 4.297662] usnic_verbs:usnic_uiom_init:585: [ 4.297670] IOMMU required but not present or enabled. USNIC QPs will not function w/o enabling IOMMU [ 4.300419] usnic_verbs:usnic_ib_init:649: [ 4.300424] Unable to initalize umem with err -1 [ 4.302850] iscsi: registered transport (iser) [ 4.303946] OPA Virtual Network Driver - v1.0 [ 4.312346] hidraw: raw HID events driver (C) Jiri Kosina [ 4.317322] usbcore: registered new interface driver usbhid [ 4.318746] usbhid: USB HID core driver [ 4.322224] NET: Registered protocol family 40 [ 4.324577] ashmem: initialized [ 4.328327] ================================================================== [ 4.329073] BUG: KASAN: use-after-free in call_usermodehelper_exec_work+0x2d3/0x310 [ 4.329073] Write of size 4 at addr ffff8801ce7ea370 by task kworker/u4:2/39 [ 4.329073] [ 4.329073] CPU: 1 PID: 39 Comm: kworker/u4:2 Not tainted 4.17.0+ #83 [ 4.329073] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 4.329073] Workqueue: events_unbound call_usermodehelper_exec_work [ 4.329073] Call Trace: [ 4.329073] dump_stack+0x1b9/0x294 [ 4.329073] ? dump_stack_print_info.cold.2+0x52/0x52 [ 4.329073] ? printk+0x9e/0xba [ 4.329073] ? kmsg_dump_rewind_nolock+0xe4/0xe4 [ 4.329073] ? kasan_check_write+0x14/0x20 [ 4.329073] print_address_description+0x6c/0x20b [ 4.329073] ? call_usermodehelper_exec_work+0x2d3/0x310 [ 4.329073] kasan_report.cold.7+0x242/0x2fe [ 4.329073] __asan_report_store4_noabort+0x17/0x20 [ 4.329073] call_usermodehelper_exec_work+0x2d3/0x310 [ 4.329073] ? call_usermodehelper_exec_async+0x9e0/0x9e0 [ 4.329073] process_one_work+0xc64/0x1b70 [ 4.329073] ? finish_task_switch+0x28b/0x840 [ 4.329073] ? pwq_dec_nr_in_flight+0x490/0x490 [ 4.329073] ? __schedule+0x809/0x1e30 [ 4.329073] ? lock_downgrade+0x8e0/0x8e0 [ 4.329073] ? graph_lock+0x170/0x170 [ 4.329073] ? graph_lock+0x170/0x170 [ 4.329073] ? find_held_lock+0x36/0x1c0 [ 4.329073] ? find_held_lock+0x36/0x1c0 [ 4.329073] ? lock_acquire+0x1dc/0x520 [ 4.329073] ? worker_thread+0x3d4/0x13a0 [ 4.329073] ? lock_downgrade+0x8e0/0x8e0 [ 4.329073] ? lock_release+0xa10/0xa10 [ 4.329073] ? kasan_check_read+0x11/0x20 [ 4.329073] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 4.329073] worker_thread+0x181/0x13a0 [ 4.329073] ? process_one_work+0x1b70/0x1b70 [ 4.329073] ? graph_lock+0x170/0x170 [ 4.329073] ? find_held_lock+0x36/0x1c0 [ 4.329073] ? schedule+0xef/0x430 [ 4.329073] ? __schedule+0x1e30/0x1e30 [ 4.329073] ? do_raw_spin_unlock+0x9e/0x2e0 [ 4.329073] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 4.329073] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 4.329073] ? __kthread_parkme+0x111/0x1d0 [ 4.329073] ? parse_args.cold.15+0x1b3/0x1b3 [ 4.329073] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 4.329073] ? trace_hardirqs_on+0xd/0x10 [ 4.329073] kthread+0x345/0x410 [ 4.329073] ? process_one_work+0x1b70/0x1b70 [ 4.329073] ? kthread_bind+0x40/0x40 [ 4.329073] ret_from_fork+0x3a/0x50 [ 4.329073] [ 4.329073] Allocated by task 1: [ 4.329073] save_stack+0x43/0xd0 [ 4.329073] kasan_kmalloc+0xc4/0xe0 [ 4.329073] kmem_cache_alloc_trace+0x152/0x780 [ 4.329073] call_usermodehelper_setup+0xe8/0x400 [ 4.329073] kobject_uevent_env+0xb21/0x1110 [ 4.329073] kobject_uevent+0x1f/0x30 [ 4.329073] device_add+0x95d/0x16f0 [ 4.329073] device_create_groups_vargs+0x1ff/0x270 [ 4.329073] device_create_with_groups+0xd8/0x100 [ 4.329073] misc_register+0x475/0x7c0 [ 4.329073] binder_init+0x412/0x6e5 [ 4.329073] do_one_initcall+0x127/0x913 [ 4.329073] kernel_init_freeable+0x49b/0x58e [ 4.329073] kernel_init+0x11/0x1b3 [ 4.329073] ret_from_fork+0x3a/0x50 [ 4.329073] [ 4.329073] Freed by task 2092: [ 4.329073] save_stack+0x43/0xd0 [ 4.329073] __kasan_slab_free+0x11a/0x170 [ 4.329073] kasan_slab_free+0xe/0x10 [ 4.329073] kfree+0xd9/0x260 [ 4.329073] umh_complete+0x7b/0x90 [ 4.329073] call_usermodehelper_exec_async+0x6e8/0x9e0 [ 4.329073] ret_from_fork+0x3a/0x50 [ 4.329073] [ 4.329073] The buggy address belongs to the object at ffff8801ce7ea300 [ 4.329073] which belongs to the cache kmalloc-192 of size 192 [ 4.329073] The buggy address is located 112 bytes inside of [ 4.329073] 192-byte region [ffff8801ce7ea300, ffff8801ce7ea3c0) [ 4.329073] The buggy address belongs to the page: [ 4.329073] page:ffffea000739fa80 count:1 mapcount:0 mapping:ffff8801ce7ea000 index:0x0 [ 4.329073] flags: 0x2fffc0000000100(slab) [ 4.329073] raw: 02fffc0000000100 ffff8801ce7ea000 0000000000000000 0000000100000010 [ 4.329073] raw: ffffea000739f7e0 ffff8801da801148 ffff8801da800040 0000000000000000 [ 4.329073] page dumped because: kasan: bad access detected [ 4.329073] [ 4.329073] Memory state around the buggy address: [ 4.329073] ffff8801ce7ea200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 4.329073] ffff8801ce7ea280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 4.329073] >ffff8801ce7ea300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 4.329073] ^ [ 4.329073] ffff8801ce7ea380: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 4.329073] ffff8801ce7ea400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 4.329073] ================================================================== [ 4.329073] Disabling lock debugging due to kernel taint [ 4.430136] Kernel panic - not syncing: panic_on_warn set ... [ 4.430136] [ 4.431254] CPU: 1 PID: 39 Comm: kworker/u4:2 Tainted: G B 4.17.0+ #83 [ 4.431254] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 4.431254] Workqueue: events_unbound call_usermodehelper_exec_work [ 4.431254] Call Trace: [ 4.431254] dump_stack+0x1b9/0x294 [ 4.431254] ? dump_stack_print_info.cold.2+0x52/0x52 [ 4.431254] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 4.431254] ? call_usermodehelper_exec_work+0x200/0x310 [ 4.431254] panic+0x22f/0x4de [ 4.431254] ? add_taint.cold.5+0x16/0x16 [ 4.431254] ? do_raw_spin_unlock+0x9e/0x2e0 [ 4.431254] ? do_raw_spin_unlock+0x9e/0x2e0 [ 4.431254] ? call_usermodehelper_exec_work+0x2d3/0x310 [ 4.431254] kasan_end_report+0x47/0x4f [ 4.431254] kasan_report.cold.7+0x76/0x2fe [ 4.431254] __asan_report_store4_noabort+0x17/0x20 [ 4.431254] call_usermodehelper_exec_work+0x2d3/0x310 [ 4.431254] ? call_usermodehelper_exec_async+0x9e0/0x9e0 [ 4.431254] process_one_work+0xc64/0x1b70 [ 4.431254] ? finish_task_switch+0x28b/0x840 [ 4.431254] ? pwq_dec_nr_in_flight+0x490/0x490 [ 4.431254] ? __schedule+0x809/0x1e30 [ 4.431254] ? lock_downgrade+0x8e0/0x8e0 [ 4.431254] ? graph_lock+0x170/0x170 [ 4.431254] ? graph_lock+0x170/0x170 [ 4.431254] ? find_held_lock+0x36/0x1c0 [ 4.431254] ? find_held_lock+0x36/0x1c0 [ 4.431254] ? lock_acquire+0x1dc/0x520 [ 4.431254] ? worker_thread+0x3d4/0x13a0 [ 4.431254] ? lock_downgrade+0x8e0/0x8e0 [ 4.431254] ? lock_release+0xa10/0xa10 [ 4.467322] NET: Registered protocol family 26 [ 4.467122] ? kasan_check_read+0x11/0x20 [ 4.469964] Mirror/redirect action on [ 4.467122] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 4.467122] worker_thread+0x181/0x13a0 [ 4.471327] Simple TC action Loaded [ 4.467122] ? process_one_work+0x1b70/0x1b70 [ 4.467122] ? graph_lock+0x170/0x170 [ 4.474617] netem: version 1.3 [ 4.467122] ? find_held_lock+0x36/0x1c0 [ 4.467122] ? schedule+0xef/0x430 [ 4.476118] u32 classifier [ 4.467122] ? __schedule+0x1e30/0x1e30 [ 4.477548] Actions configured [ 4.467122] ? do_raw_spin_unlock+0x9e/0x2e0 [ 4.467122] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 4.467122] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 4.480328] nf_conntrack_irc: failed to register helpers [ 4.467122] ? __kthread_parkme+0x111/0x1d0 [ 4.481725] nf_conntrack_sane: failed to register helpers [ 4.467122] ? parse_args.cold.15+0x1b3/0x1b3 [ 4.467122] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 4.487653] ? trace_hardirqs_on+0xd/0x10 [ 4.490353] kthread+0x345/0x410 [ 4.491504] ? process_one_work+0x1b70/0x1b70 [ 4.492676] ? kthread_bind+0x40/0x40 [ 4.493496] ret_from_fork+0x3a/0x50 [ 4.494640] Dumping ftrace buffer: [ 4.494640] (ftrace buffer empty) [ 4.494640] Kernel Offset: disabled [ 4.494640] Rebooting in 86400 seconds..