ooting the kernel. [ 0.000000] Linux version 4.17.0-rc7+ (syzkaller@ci) (gcc version 8.0.1 20180413 (experimental) (GCC)) #81 SMP Wed Jun 6 20:45:17 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] 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 0x0000000000100000-0x00000000bfff2fff] 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] e820: last_pfn = 0x220000 max_arch_pfn = 0x400000000 [ 0.000000] x86/PAT: Configuration [0-7]: WB WC UC- UC WB WP UC- WT [ 0.000000] e820: 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 4617015099 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] e820: [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 55 pages/cpu @ (ptrval) s187784 r8192 d29304 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: 6503496K/7863876K available (108576K kernel code, 12164K rwdata, 15892K rodata, 2900K init, 23132K bss, 1360380K 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 20180313 [ 0.001000] APIC: Switch to symmetric I/O mode setup [ 0.001269] x2apic enabled [ 0.002013] Switched APIC routing to physical x2apic. [ 0.006000] ..TIMER: vector=0x30 apic1=0 pin1=0 apic2=-1 pin2=-1 [ 0.006000] tsc: Detected 2300.000 MHz processor [ 0.006000] clocksource: tsc-early: mask: 0xffffffffffffffff max_cycles: 0x212735223b2, max_idle_ns: 440795277976 ns [ 0.006027] Calibrating delay loop (skipped) preset value.. 4600.00 BogoMIPS (lpj=2300000) [ 0.007010] pid_max: default: 32768 minimum: 301 [ 0.008410] Security Framework initialized [ 0.009012] Yama: becoming mindful. [ 0.009550] SELinux: Initializing. [ 0.010355] AppArmor: AppArmor disabled by boot time parameter [ 0.016088] Dentry cache hash table entries: 1048576 (order: 11, 8388608 bytes) [ 0.019459] Inode-cache hash table entries: 524288 (order: 10, 4194304 bytes) [ 0.020130] Mount-cache hash table entries: 16384 (order: 5, 131072 bytes) [ 0.022023] Mountpoint-cache hash table entries: 16384 (order: 5, 131072 bytes) [ 0.025123] CPU: Physical Processor ID: 0 [ 0.025749] mce: CPU supports 32 MCE banks [ 0.026148] Last level iTLB entries: 4KB 1024, 2MB 1024, 4MB 1024 [ 0.027010] Last level dTLB entries: 4KB 1024, 2MB 1024, 4MB 1024, 1GB 4 [ 0.028025] Spectre V2 : Mitigation: Full generic retpoline [ 0.029007] Speculative Store Bypass: Vulnerable [ 0.030397] Freeing SMP alternatives memory: 64K [ 0.033000] smpboot: CPU0: Intel(R) Xeon(R) CPU @ 2.30GHz (family: 0x6, model: 0x3f, stepping: 0x0) [ 0.034167] Performance Events: unsupported p6 CPU model 63 no PMU driver, software events only. [ 0.035237] Hierarchical SRCU implementation. [ 0.036513] NMI watchdog: Perf event create on CPU 0 failed with -2 [ 0.037009] NMI watchdog: Perf NMI watchdog permanently disabled [ 0.038458] smp: Bringing up secondary CPUs ... [ 0.041271] x86: Booting SMP configuration: [ 0.041886] .... node #0, CPUs: #1 [ 0.001000] kvm-clock: cpu 1, msr 2:1fff8041, secondary cpu clock [ 0.044039] smp: Brought up 1 node, 2 CPUs [ 0.044622] smpboot: Max logical packages: 1 [ 0.045046] smpboot: Total of 2 processors activated (9200.00 BogoMIPS) [ 0.048635] devtmpfs: initialized [ 0.060242] kworker/u4:0 (23) used greatest stack depth: 24000 bytes left [ 0.062074] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 1911260446275000 ns [ 0.063074] futex hash table entries: 512 (order: 4, 65536 bytes) [ 0.064195] xor: automatically using best checksumming function avx [ 0.066456] RTC time: 21:03:18, date: 06/06/18 [ 0.075526] NET: Registered protocol family 16 [ 0.078527] audit: initializing netlink subsys (disabled) [ 0.079091] audit: type=2000 audit(1528318998.841:1): state=initialized audit_enabled=0 res=1 [ 0.081186] cpuidle: using governor menu [ 0.082545] kworker/u4:1 (41) used greatest stack depth: 23056 bytes left [ 0.082247] ACPI: bus type PCI registered [ 0.084903] PCI: Using configuration type 1 for base access [ 0.136107] kworker/u4:0 (276) used greatest stack depth: 20952 bytes left [ 0.266393] HugeTLB registered 2.00 MiB page size, pre-allocated 0 pages [ 0.268441] cryptd: max_cpu_qlen set to 1000 [ 0.286145] raid6: sse2x1 gen() 812 MB/s [ 0.303134] raid6: sse2x1 xor() 1027 MB/s [ 0.320129] raid6: sse2x2 gen() 3968 MB/s [ 0.337136] raid6: sse2x2 xor() 1884 MB/s [ 0.354128] raid6: sse2x4 gen() 6277 MB/s [ 0.371138] raid6: sse2x4 xor() 3355 MB/s [ 0.388138] raid6: avx2x1 gen() 4441 MB/s [ 0.405129] raid6: avx2x1 xor() 2125 MB/s [ 0.422134] raid6: avx2x2 gen() 7757 MB/s [ 0.439129] raid6: avx2x2 xor() 3669 MB/s [ 0.456127] raid6: avx2x4 gen() 12074 MB/s [ 0.473126] raid6: avx2x4 xor() 6255 MB/s [ 0.473747] raid6: using algorithm avx2x4 gen() 12074 MB/s [ 0.475012] raid6: .... xor() 6255 MB/s, rmw enabled [ 0.476009] raid6: using avx2x2 recovery algorithm [ 0.477486] ACPI: Added _OSI(Module Device) [ 0.478049] ACPI: Added _OSI(Processor Device) [ 0.478688] ACPI: Added _OSI(3.0 _SCP Extensions) [ 0.479011] ACPI: Added _OSI(Processor Aggregator Device) [ 0.480020] ACPI: Added _OSI(Linux-Dell-Video) [ 0.665172] ACPI: 2 ACPI AML tables successfully acquired and loaded [ 1.139345] ACPI: Interpreter enabled [ 1.140152] ACPI: (supports S0 S3 S4 S5) [ 1.140724] ACPI: Using IOAPIC for interrupt routing [ 1.142191] PCI: Using host bridge windows from ACPI; if necessary, use "pci=nocrs" and report a bug [ 1.144815] ACPI: Enabled 16 GPEs in block 00 to 0F [ 1.712159] ACPI: PCI Root Bridge [PCI0] (domain 0000 [bus 00-ff]) [ 1.714042] acpi PNP0A03:00: _OSC: OS supports [ASPM ClockPM Segments MSI] [ 1.715143] acpi PNP0A03:00: _OSC failed (AE_NOT_FOUND); disabling ASPM [ 1.716165] acpi PNP0A03:00: fail to add MMCONFIG information, can't access extended PCI configuration space under this bridge. [ 1.721004] PCI host bridge to bus 0000:00 [ 1.722025] pci_bus 0000:00: root bus resource [io 0x0000-0x0cf7 window] [ 1.723019] pci_bus 0000:00: root bus resource [io 0x0d00-0xffff window] [ 1.724021] pci_bus 0000:00: root bus resource [mem 0x000a0000-0x000bffff window] [ 1.725019] pci_bus 0000:00: root bus resource [mem 0xc0000000-0xfebfffff window] [ 1.726021] pci_bus 0000:00: root bus resource [bus 00-ff] [ 1.757152] pci 0000:00:01.3: quirk: [io 0xb000-0xb03f] claimed by PIIX4 ACPI [ 1.810922] ACPI: PCI Interrupt Link [LNKA] (IRQs 5 *10 11) [ 1.813855] ACPI: PCI Interrupt Link [LNKB] (IRQs 5 *10 11) [ 1.816807] ACPI: PCI Interrupt Link [LNKC] (IRQs 5 10 *11) [ 1.819633] ACPI: PCI Interrupt Link [LNKD] (IRQs 5 10 *11) [ 1.822399] ACPI: PCI Interrupt Link [LNKS] (IRQs *9) [ 2.182913] vgaarb: loaded [ 2.185168] SCSI subsystem initialized [ 2.186683] ACPI: bus type USB registered [ 2.188423] usbcore: registered new interface driver usbfs [ 2.189592] usbcore: registered new interface driver hub [ 2.191413] usbcore: registered new device driver usb [ 2.193682] pps_core: LinuxPPS API ver. 1 registered [ 2.194012] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti [ 2.195115] PTP clock support registered [ 2.197370] EDAC MC: Ver: 3.0.0 [ 2.201594] Advanced Linux Sound Architecture Driver Initialized. [ 2.203159] PCI: Using ACPI for IRQ routing [ 2.207043] Bluetooth: Core ver 2.22 [ 2.207777] NET: Registered protocol family 31 [ 2.208012] Bluetooth: HCI device and connection manager initialized [ 2.209040] Bluetooth: HCI socket layer initialized [ 2.210018] Bluetooth: L2CAP socket layer initialized [ 2.211043] Bluetooth: SCO socket layer initialized [ 2.211761] NET: Registered protocol family 8 [ 2.212010] NET: Registered protocol family 20 [ 2.213184] NetLabel: Initializing [ 2.213726] NetLabel: domain hash size = 128 [ 2.214009] NetLabel: protocols = UNLABELED CIPSOv4 CALIPSO [ 2.215225] NetLabel: unlabeled traffic allowed by default [ 2.217390] nfc: nfc_init: NFC Core ver 0.1 [ 2.218286] NET: Registered protocol family 39 [ 2.220270] clocksource: Switched to clocksource kvm-clock [ 2.682512] VFS: Disk quotas dquot_6.6.0 [ 2.683287] VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes) [ 2.684686] FS-Cache: Loaded [ 2.685984] CacheFiles: Loaded [ 2.687005] pnp: PnP ACPI init [ 2.697744] pnp: PnP ACPI: found 7 devices [ 2.739282] clocksource: acpi_pm: mask: 0xffffff max_cycles: 0xffffff, max_idle_ns: 2085701024 ns [ 2.741528] NET: Registered protocol family 2 [ 2.743882] tcp_listen_portaddr_hash hash table entries: 4096 (order: 6, 294912 bytes) [ 2.745603] TCP established hash table entries: 65536 (order: 7, 524288 bytes) [ 2.748873] TCP bind hash table entries: 65536 (order: 10, 4194304 bytes) [ 2.756495] TCP: Hash tables configured (established 65536 bind 65536) [ 2.757942] UDP hash table entries: 4096 (order: 7, 655360 bytes) [ 2.760463] UDP-Lite hash table entries: 4096 (order: 7, 655360 bytes) [ 2.762998] NET: Registered protocol family 1 [ 2.765436] RPC: Registered named UNIX socket transport module. [ 2.766422] RPC: Registered udp transport module. [ 2.767134] RPC: Registered tcp transport module. [ 2.767845] RPC: Registered tcp NFSv4.1 backchannel transport module. [ 2.769871] pci 0000:00:00.0: Limiting direct PCI/PCI transfers [ 2.771671] PCI-DMA: Using software bounce buffering for IO (SWIOTLB) [ 2.772629] software IO TLB [mem 0xbbff3000-0xbfff3000] (64MB) mapped at [ (ptrval)- (ptrval)] [ 2.775313] RAPL PMU: API unit is 2^-32 Joules, 3 fixed counters, 10737418240 ms ovfl timer [ 2.776537] RAPL PMU: hw unit of domain pp0-core 2^-0 Joules [ 2.777353] RAPL PMU: hw unit of domain package 2^-0 Joules [ 2.778132] RAPL PMU: hw unit of domain dram 2^-16 Joules [ 2.780707] kvm: already loaded the other module [ 2.781697] Machine check injector initialized [ 2.785903] Scanning for low memory corruption every 60 seconds [ 2.819487] Initialise system trusted keyrings [ 2.821235] workingset: timestamp_bits=40 max_order=21 bucket_order=0 [ 2.826057] DLM installed [ 2.828373] NFS: Registering the id_resolver key type [ 2.829261] Key type id_resolver registered [ 2.829883] Key type id_legacy registered [ 2.830552] nfs4filelayout_init: NFSv4 File Layout Driver Registering... [ 2.831587] Installing knfsd (copyright (C) 1996 okir@monad.swb.de). [ 2.833573] ntfs: driver 2.1.32 [Flags: R/W]. [ 2.834737] fuse init (API version 7.26) [ 2.836971] JFS: nTxBlock = 8192, nTxLock = 65536 [ 2.846233] SGI XFS with ACLs, security attributes, realtime, no debug enabled [ 2.849350] 9p: Installing v9fs 9p2000 file system support [ 2.850258] FS-Cache: Netfs '9p' registered for caching [ 2.853757] gfs2: GFS2 installed [ 2.855184] FS-Cache: Netfs 'ceph' registered for caching [ 2.855971] ceph: loaded (mds proto 32) [ 2.884674] NET: Registered protocol family 38 [ 2.885761] async_tx: api initialized (async) [ 2.886653] Key type asymmetric registered [ 2.887387] Asymmetric key parser 'x509' registered [ 2.888212] Key type pkcs7_test registered [ 2.888964] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 250) [ 2.890318] io scheduler noop registered [ 2.890879] io scheduler deadline registered [ 2.891691] io scheduler cfq registered (default) [ 2.892384] io scheduler mq-deadline registered [ 2.893047] io scheduler kyber registered [ 2.893701] io scheduler bfq registered [ 2.897702] input: Power Button as /devices/LNXSYSTM:00/LNXPWRBN:00/input/input0 [ 2.899155] ACPI: Power Button [PWRF] [ 2.900472] input: Sleep Button as /devices/LNXSYSTM:00/LNXSLPBN:00/input/input1 [ 2.901722] ACPI: Sleep Button [SLPF] [ 2.915993] PCI Interrupt Link [LNKC] enabled at IRQ 11 [ 2.916904] virtio-pci 0000:00:03.0: virtio_pci: leaving for legacy driver [ 2.927839] PCI Interrupt Link [LNKD] enabled at IRQ 10 [ 2.928720] virtio-pci 0000:00:04.0: virtio_pci: leaving for legacy driver [ 2.935375] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled [ 2.958545] 00:03: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a 16550A [ 2.983872] 00:04: ttyS1 at I/O 0x2f8 (irq = 3, base_baud = 115200) is a 16550A [ 3.008088] 00:05: ttyS2 at I/O 0x3e8 (irq = 6, base_baud = 115200) is a 16550A [ 3.032470] 00:06: ttyS3 at I/O 0x2e8 (irq = 7, base_baud = 115200) is a 16550A [ 3.039115] Non-volatile memory driver v1.3 [ 3.040830] Linux agpgart interface v0.103 [ 3.043623] [drm] radeon kernel modesetting enabled. [ 3.045118] [drm] amdgpu kernel modesetting enabled. [ 3.083590] brd: module loaded [ 3.103792] loop: module loaded [ 3.147087] null: module loaded [ 3.150303] nfcsim 0.2 initialized [ 3.152507] Loading iSCSI transport class v2.0-870. [ 3.168450] scsi host0: Virtio SCSI HBA [ 3.221219] scsi 0:0:1:0: Direct-Access Google PersistentDisk 1 PQ: 0 ANSI: 6 [ 3.564634] random: fast init done [ 3.807306] tsc: Refined TSC clocksource calibration: 2299.787 MHz [ 3.808858] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x21266c29e3c, max_idle_ns: 440795308550 ns [ 3.983920] sd 0:0:1:0: [sda] 4194304 512-byte logical blocks: (2.15 GB/2.00 GiB) [ 3.984747] sd 0:0:1:0: Attached scsi generic sg0 type 0 [ 3.985460] sd 0:0:1:0: [sda] 4096-byte physical blocks [ 3.985611] sd 0:0:1:0: [sda] Write Protect is off [ 3.988976] Ethernet Channel Bonding Driver: v3.7.1 (April 27, 2011) [ 3.990864] sd 0:0:1:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA [ 4.008788] eql: Equalizer2002: Simon Janes (simon@ncm.com) and David S. Miller (davem@redhat.com) [ 4.014891] MACsec IEEE 802.1AE [ 4.016230] tun: Universal TUN/TAP device driver, 1.6 [ 4.041303] vcan: Virtual CAN interface driver [ 4.042390] vxcan: Virtual CAN Tunnel driver [ 4.043188] slcan: serial line CAN interface driver [ 4.044110] slcan: 10 dynamic interface channels. [ 4.045216] CAN device driver interface [ 4.046279] sda: sda1 [ 4.046393] enic: Cisco VIC Ethernet NIC Driver, ver 2.3.0.53 [ 4.048467] e100: Intel(R) PRO/100 Network Driver, 3.5.24-k2-NAPI [ 4.050075] e100: Copyright(c) 1999-2006 Intel Corporation [ 4.051355] sd 0:0:1:0: [sda] Attached SCSI disk [ 4.052161] e1000: Intel(R) PRO/1000 Network Driver - version 7.3.21-k8-NAPI [ 4.054053] e1000: Copyright (c) 1999-2006 Intel Corporation. [ 4.055144] e1000e: Intel(R) PRO/1000 Network Driver - 3.2.6-k [ 4.056298] e1000e: Copyright(c) 1999 - 2015 Intel Corporation. [ 4.057370] sky2: driver version 1.30 [ 4.059305] PPP generic driver version 2.4.2 [ 4.060887] PPP BSD Compression module registered [ 4.061842] PPP Deflate Compression module registered [ 4.062829] PPP MPPE Compression module registered [ 4.063594] NET: Registered protocol family 24 [ 4.064384] PPTP driver version 0.8.5 [ 4.066276] mac80211_hwsim: initializing netlink [ 4.078495] usbcore: registered new interface driver asix [ 4.079737] usbcore: registered new interface driver ax88179_178a [ 4.081115] usbcore: registered new interface driver cdc_ether [ 4.082505] usbcore: registered new interface driver net1080 [ 4.083612] usbcore: registered new interface driver cdc_subset [ 4.084954] usbcore: registered new interface driver zaurus [ 4.086090] usbcore: registered new interface driver cdc_ncm [ 4.094817] aoe: AoE v85 initialised. [ 4.096544] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver [ 4.097870] ehci-pci: EHCI PCI platform driver [ 4.098708] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver [ 4.100140] ohci-pci: OHCI PCI platform driver [ 4.101431] uhci_hcd: USB Universal Host Controller Interface driver [ 4.103513] usbcore: registered new interface driver usblp [ 4.104861] usbcore: registered new interface driver usb-storage [ 4.107076] i8042: PNP: PS/2 Controller [PNP0303:KBD,PNP0f13:MOU] at 0x60,0x64 irq 1,12 [ 4.109883] i8042: Warning: Keylock active [ 4.112716] serio: i8042 KBD port at 0x60,0x64 irq 1 [ 4.114102] serio: i8042 AUX port at 0x60,0x64 irq 12 [ 4.117138] mousedev: PS/2 mouse device common for all mice [ 4.121455] rtc_cmos 00:00: RTC can wake from S4 [ 4.123670] rtc_cmos 00:00: registered as rtc0 [ 4.124728] rtc_cmos 00:00: nvmem registration failed [ 4.125445] rtc_cmos 00:00: alarms up to one day, 114 bytes nvram [ 4.126814] i2c /dev entries driver [ 4.129524] piix4_smbus 0000:00:01.3: SMBus base address uninitialized - upgrade BIOS or use force_addr=0xaddr [ 4.131916] i2c-parport-light: adapter type unspecified [ 4.133502] usbcore: registered new interface driver RobotFuzz Open Source InterFace, OSIF [ 4.135411] usbcore: registered new interface driver i2c-tiny-usb [ 4.138795] device-mapper: ioctl: 4.39.0-ioctl (2018-04-03) initialised: dm-devel@redhat.com [ 4.141292] device-mapper: raid: Loading target version 1.13.2 [ 4.143043] usbcore: registered new interface driver btusb [ 4.145740] usnic_verbs: Cisco VIC (USNIC) Verbs Driver v1.0.3 (December 19, 2013) [ 4.147484] usnic_verbs:usnic_uiom_init:585: [ 4.147490] IOMMU required but not present or enabled. USNIC QPs will not function w/o enabling IOMMU [ 4.150324] usnic_verbs:usnic_ib_init:649: [ 4.150328] Unable to initalize umem with err -1 [ 4.153118] iscsi: registered transport (iser) [ 4.154165] OPA Virtual Network Driver - v1.0 [ 4.161339] hidraw: raw HID events driver (C) Jiri Kosina [ 4.166889] usbcore: registered new interface driver usbhid [ 4.168530] usbhid: USB HID core driver [ 4.172193] NET: Registered protocol family 40 [ 4.174420] ashmem: initialized [ 4.186382] ================================================================== [ 4.187044] BUG: KASAN: use-after-free in call_usermodehelper_exec_work+0x2d3/0x310 [ 4.189214] Write of size 4 at addr ffff8801ce736870 by task kworker/u4:3/81 [ 4.189214] [ 4.189214] CPU: 0 PID: 81 Comm: kworker/u4:3 Not tainted 4.17.0-rc7+ #81 [ 4.189214] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 4.189214] Workqueue: events_unbound call_usermodehelper_exec_work [ 4.189214] Call Trace: [ 4.189214] dump_stack+0x1b9/0x294 [ 4.189214] ? dump_stack_print_info.cold.2+0x52/0x52 [ 4.189214] ? printk+0x9e/0xba [ 4.189214] ? kmsg_dump_rewind_nolock+0xe4/0xe4 [ 4.189214] ? kasan_check_write+0x14/0x20 [ 4.189214] print_address_description+0x6c/0x20b [ 4.189214] ? call_usermodehelper_exec_work+0x2d3/0x310 [ 4.189214] kasan_report.cold.7+0x242/0x2fe [ 4.189214] __asan_report_store4_noabort+0x17/0x20 [ 4.189214] call_usermodehelper_exec_work+0x2d3/0x310 [ 4.189214] ? call_usermodehelper_exec_async+0x9e0/0x9e0 [ 4.189214] process_one_work+0xc1e/0x1b50 [ 4.189214] ? finish_task_switch+0x28b/0x840 [ 4.189214] ? pwq_dec_nr_in_flight+0x490/0x490 [ 4.189214] ? __schedule+0x809/0x1e30 [ 4.189214] ? pick_next_task_fair+0x97c/0x1780 [ 4.189214] ? graph_lock+0x170/0x170 [ 4.189214] ? find_held_lock+0x36/0x1c0 [ 4.189214] ? find_held_lock+0x36/0x1c0 [ 4.189214] ? lock_acquire+0x1dc/0x520 [ 4.189214] ? worker_thread+0x41f/0x1440 [ 4.189214] ? lock_downgrade+0x8e0/0x8e0 [ 4.189214] ? lock_release+0xa10/0xa10 [ 4.189214] ? kasan_check_read+0x11/0x20 [ 4.189214] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 4.189214] worker_thread+0x1cc/0x1440 [ 4.189214] ? process_one_work+0x1b50/0x1b50 [ 4.189214] ? graph_lock+0x170/0x170 [ 4.189214] ? find_held_lock+0x36/0x1c0 [ 4.231179] NET: Registered protocol family 26 [ 4.230782] ? schedule+0xef/0x430 [ 4.232162] Mirror/redirect action on [ 4.230782] ? __schedule+0x1e30/0x1e30 [ 4.233609] Simple TC action Loaded [ 4.230782] ? do_raw_spin_unlock+0x9e/0x2e0 [ 4.230782] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 4.230782] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 4.236639] netem: version 1.3 [ 4.230782] ? __kthread_parkme+0x111/0x1d0 [ 4.237923] u32 classifier [ 4.230782] ? parse_args.cold.15+0x1b3/0x1b3 [ 4.230782] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 4.230782] ? trace_hardirqs_on+0xd/0x10 [ 4.239141] Actions configured [ 4.230782] kthread+0x345/0x410 [ 4.243075] nf_conntrack_irc: failed to register helpers [ 4.230782] ? process_one_work+0x1b50/0x1b50 [ 4.243996] nf_conntrack_sane: failed to register helpers [ 4.230782] ? kthread_bind+0x40/0x40 [ 4.230782] ret_from_fork+0x3a/0x50 [ 4.230782] [ 4.248830] Allocated by task 1: [ 4.249560] save_stack+0x43/0xd0 [ 4.250101] kasan_kmalloc+0xc4/0xe0 [ 4.250101] kmem_cache_alloc_trace+0x152/0x780 [ 4.250101] call_usermodehelper_setup+0xe8/0x400 [ 4.253911] kobject_uevent_env+0xb21/0x1110 [ 4.254436] kobject_uevent+0x1f/0x30 [ 4.255982] device_add+0xb01/0x16d0 [ 4.256923] device_create_groups_vargs+0x1ff/0x270 [ 4.258398] device_create_with_groups+0xd8/0x100 [ 4.259385] misc_register+0x475/0x7c0 [ 4.259385] binder_init+0x412/0x6e5 [ 4.259385] do_one_initcall+0x127/0x913 [ 4.259385] kernel_init_freeable+0x49b/0x58e [ 4.259385] kernel_init+0x11/0x1b3 [ 4.259385] ret_from_fork+0x3a/0x50 [ 4.259385] [ 4.259385] Freed by task 2085: [ 4.266129] save_stack+0x43/0xd0 [ 4.266129] __kasan_slab_free+0x11a/0x170 [ 4.266129] kasan_slab_free+0xe/0x10 [ 4.266129] kfree+0xd9/0x260 [ 4.269949] umh_complete+0x7b/0x90 [ 4.269949] call_usermodehelper_exec_async+0x6e8/0x9e0 [ 4.272422] ret_from_fork+0x3a/0x50 [ 4.273104] [ 4.273104] The buggy address belongs to the object at ffff8801ce736800 [ 4.273104] which belongs to the cache kmalloc-192 of size 192 [ 4.276036] The buggy address is located 112 bytes inside of [ 4.276036] 192-byte region [ffff8801ce736800, ffff8801ce7368c0) [ 4.279059] The buggy address belongs to the page: [ 4.280035] page:ffffea000739cd80 count:1 mapcount:0 mapping:ffff8801ce736000 index:0x0 [ 4.282034] flags: 0x2fffc0000000100(slab) [ 4.283059] raw: 02fffc0000000100 ffff8801ce736000 0000000000000000 0000000100000010 [ 4.284037] raw: ffffea00073978e0 ffffea000739d260 ffff8801da800040 0000000000000000 [ 4.286035] page dumped because: kasan: bad access detected [ 4.287059] [ 4.287059] Memory state around the buggy address: [ 4.288036] ffff8801ce736700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 4.288036] ffff8801ce736780: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 4.291061] >ffff8801ce736800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 4.292036] ^ [ 4.294035] ffff8801ce736880: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 4.296035] ffff8801ce736900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 4.296035] ================================================================== [ 4.298035] Disabling lock debugging due to kernel taint [ 4.300148] Kernel panic - not syncing: panic_on_warn set ... [ 4.300148] [ 4.301131] CPU: 0 PID: 81 Comm: kworker/u4:3 Tainted: G B 4.17.0-rc7+ #81 [ 4.303041] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 4.304027] Workqueue: events_unbound call_usermodehelper_exec_work [ 4.306028] Call Trace: [ 4.306028] dump_stack+0x1b9/0x294 [ 4.307040] ? dump_stack_print_info.cold.2+0x52/0x52 [ 4.308028] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 4.308028] ? call_usermodehelper_exec_work+0x290/0x310 [ 4.310028] panic+0x22f/0x4de [ 4.311041] ? add_taint.cold.5+0x16/0x16 [ 4.311041] ? do_raw_spin_unlock+0x9e/0x2e0 [ 4.312029] ? do_raw_spin_unlock+0x9e/0x2e0 [ 4.314026] ? call_usermodehelper_exec_work+0x2d3/0x310 [ 4.315040] kasan_end_report+0x47/0x4f [ 4.316028] kasan_report.cold.7+0x76/0x2fe [ 4.316028] __asan_report_store4_noabort+0x17/0x20 [ 4.316028] call_usermodehelper_exec_work+0x2d3/0x310 [ 4.318027] ? call_usermodehelper_exec_async+0x9e0/0x9e0 [ 4.319041] process_one_work+0xc1e/0x1b50 [ 4.320027] ? finish_task_switch+0x28b/0x840 [ 4.320027] ? pwq_dec_nr_in_flight+0x490/0x490 [ 4.320027] ? __schedule+0x809/0x1e30 [ 4.322027] ? pick_next_task_fair+0x97c/0x1780 [ 4.323041] ? graph_lock+0x170/0x170 [ 4.324027] ? find_held_lock+0x36/0x1c0 [ 4.324027] ? find_held_lock+0x36/0x1c0 [ 4.324027] ? lock_acquire+0x1dc/0x520 [ 4.326027] ? worker_thread+0x41f/0x1440 [ 4.327040] ? lock_downgrade+0x8e0/0x8e0 [ 4.327040] ? lock_release+0xa10/0xa10 [ 4.328028] ? kasan_check_read+0x11/0x20 [ 4.328028] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 4.330028] worker_thread+0x1cc/0x1440 [ 4.331041] ? process_one_work+0x1b50/0x1b50 [ 4.332028] ? graph_lock+0x170/0x170 [ 4.332028] ? find_held_lock+0x36/0x1c0 [ 4.332028] ? schedule+0xef/0x430 [ 4.334027] ? __schedule+0x1e30/0x1e30 [ 4.335041] ? do_raw_spin_unlock+0x9e/0x2e0 [ 4.336027] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 4.336027] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 4.338028] ? __kthread_parkme+0x111/0x1d0 [ 4.339042] ? parse_args.cold.15+0x1b3/0x1b3 [ 4.340029] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 4.340029] ? trace_hardirqs_on+0xd/0x10 [ 4.342028] kthread+0x345/0x410 [ 4.343040] ? process_one_work+0x1b50/0x1b50 [ 4.344028] ? kthread_bind+0x40/0x40 [ 4.344028] ret_from_fork+0x3a/0x50 [ 4.346030] Dumping ftrace buffer: [ 4.346030] (ftrace buffer empty) [ 4.346030] Kernel Offset: disabled [ 4.346030] Rebooting in 86400 seconds..