[ 20.965929] random: sshd: uninitialized urandom read (32 bytes read, 34 bits of entropy available) [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 25.527985] random: sshd: uninitialized urandom read (32 bytes read, 38 bits of entropy available) [ 25.854847] random: sshd: uninitialized urandom read (32 bytes read, 40 bits of entropy available) [ 26.823690] random: sshd: uninitialized urandom read (32 bytes read, 112 bits of entropy available) [ 26.987201] random: sshd: uninitialized urandom read (32 bytes read, 115 bits of entropy available) Warning: Permanently added '10.128.10.15' (ECDSA) to the list of known hosts. [ 32.397752] random: sshd: uninitialized urandom read (32 bytes read, 120 bits of entropy available) 2018/03/24 02:20:10 parsed 1 programs 2018/03/24 02:20:10 executed programs: 0 [ 32.734080] IPVS: Creating netns size=2552 id=1 [ 33.400440] ================================================================== [ 33.407838] BUG: KASAN: use-after-free in pppol2tp_session_destruct+0xee/0x110 [ 33.415183] Read of size 4 at addr ffff8801da36d900 by task syz-executor0/3999 [ 33.422508] [ 33.424107] CPU: 0 PID: 3999 Comm: syz-executor0 Not tainted 4.4.120-gd63fdf6 #29 [ 33.431705] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 33.441027] 0000000000000000 a3f258eb1c1914f7 ffff8801ced7fc20 ffffffff81d0408d [ 33.449039] ffffea000768db00 ffff8801da36d900 0000000000000000 ffff8801da36d900 [ 33.457007] ffffffff82de7d30 ffff8801ced7fc58 ffffffff814fe143 ffff8801da36d900 [ 33.464974] Call Trace: [ 33.467533] [] dump_stack+0xc1/0x124 [ 33.472867] [] ? sock_release+0x1e0/0x1e0 [ 33.478633] [] print_address_description+0x73/0x260 [ 33.485267] [] ? sock_release+0x1e0/0x1e0 [ 33.491030] [] kasan_report+0x285/0x370 [ 33.496626] [] ? pppol2tp_session_destruct+0xee/0x110 [ 33.503432] [] __asan_report_load4_noabort+0x14/0x20 [ 33.510154] [] pppol2tp_session_destruct+0xee/0x110 [ 33.516788] [] ? pppol2tp_seq_start+0x4e0/0x4e0 [ 33.523076] [] sk_destruct+0x4a/0x4c0 [ 33.528496] [] __sk_free+0x57/0x230 [ 33.533740] [] sk_free+0x30/0x40 [ 33.538725] [] pppol2tp_release+0x27a/0x310 [ 33.544664] [] sock_release+0x8d/0x1e0 [ 33.550169] [] sock_close+0x16/0x20 [ 33.555412] [] __fput+0x233/0x6d0 [ 33.560483] [] ____fput+0x15/0x20 [ 33.565557] [] task_work_run+0x104/0x180 [ 33.571237] [] exit_to_usermode_loop+0x13d/0x160 [ 33.577608] [] do_fast_syscall_32+0x614/0x8a0 [ 33.583721] [] sysenter_flags_fixed+0xd/0x17 [ 33.589745] [ 33.591342] Allocated by task 3999: [ 33.594936] [] save_stack_trace+0x26/0x50 [ 33.600824] [] save_stack+0x43/0xd0 [ 33.606186] [] kasan_kmalloc+0xad/0xe0 [ 33.611805] [] __kmalloc+0x124/0x320 [ 33.617248] [] l2tp_session_create+0x39/0x10f0 [ 33.623566] [] pppol2tp_connect+0x10fc/0x1930 [ 33.629798] [] SYSC_connect+0x1b6/0x310 [ 33.635507] [] SyS_connect+0x24/0x30 [ 33.640954] [] do_fast_syscall_32+0x321/0x8a0 [ 33.647180] [] sysenter_flags_fixed+0xd/0x17 [ 33.653323] [ 33.654920] Freed by task 4001: [ 33.658163] [] save_stack_trace+0x26/0x50 [ 33.664045] [] save_stack+0x43/0xd0 [ 33.669404] [] kasan_slab_free+0x72/0xc0 [ 33.675198] [] kfree+0xfc/0x300 [ 33.680209] [] l2tp_session_free+0x170/0x200 [ 33.686352] [] l2tp_tunnel_closeall+0x2d1/0x3b0 [ 33.692752] [] l2tp_udp_encap_destroy+0x8b/0xf0 [ 33.699156] [] udpv6_destroy_sock+0xb1/0xd0 [ 33.705219] [] sk_common_release+0x6b/0x300 [ 33.711274] [] udp_lib_close+0x15/0x20 [ 33.716901] [] inet_release+0xfa/0x1d0 [ 33.722520] [] inet6_release+0x50/0x70 [ 33.728142] [] sock_release+0x8d/0x1e0 [ 33.733764] [] sock_close+0x16/0x20 [ 33.739128] [] __fput+0x233/0x6d0 [ 33.744314] [] ____fput+0x15/0x20 [ 33.749499] [] task_work_run+0x104/0x180 [ 33.755293] [] exit_to_usermode_loop+0x13d/0x160 [ 33.761786] [] do_fast_syscall_32+0x614/0x8a0 [ 33.768012] [] sysenter_flags_fixed+0xd/0x17 [ 33.774155] [ 33.775754] The buggy address belongs to the object at ffff8801da36d900 [ 33.775754] which belongs to the cache kmalloc-512 of size 512 [ 33.788374] The buggy address is located 0 bytes inside of [ 33.788374] 512-byte region [ffff8801da36d900, ffff8801da36db00) [ 33.800038] The buggy address belongs to the page: SeaBIOS (version 1.8.2-20171120_144221-google) Total RAM Size = 0x00000001e0000000 = 7680 MiB CPUs found: 2 Max CPUs supported: 256 found virtio-scsi at 0:3 virtio-scsi vendor='Google' product='PersistentDisk' rev='1' type=0 removable=0 virtio-scsi blksize=512 sectors=4194304 = 2048 MiB drive 0x000f2360: PCHS=0/0/0 translation=lba LCHS=520/128/63 s=4194304 Booting from Hard Disk 0... early console in decompress_kernel input_data: 0x00000000037cb26e input_len: 0x0000000001423b30 output: 0x0000000001000000 output_len: 0x0000000003bdaa40 run_size: 0x0000000005310000 Decompressing Linux... Parsing ELF... done. Booting the kernel. [ 0.000000] Initializing cgroup subsys cpuset [ 0.000000] Initializing cgroup subsys cpu [ 0.000000] Initializing cgroup subsys cpuacct [ 0.000000] Initializing cgroup subsys schedtune [ 0.000000] Linux version 4.4.120-gd63fdf6 (syzkaller@ci) (gcc version 7.1.1 20170620 (GCC) ) #29 SMP PREEMPT Tue Mar 6 13:11:38 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 workqueue.watchdog_thresh=120 [ 0.000000] KERNEL supported cpus: [ 0.000000] Intel GenuineIntel [ 0.000000] AMD AuthenticAMD [ 0.000000] Centaur CentaurHauls [ 0.000000] x86/fpu: xstate_offset[2]: 576, xstate_sizes[2]: 256 [ 0.000000] x86/fpu: Supporting XSAVE feature 0x01: 'x87 floating point registers' [ 0.000000] x86/fpu: Supporting XSAVE feature 0x02: 'SSE registers' [ 0.000000] x86/fpu: Supporting XSAVE feature 0x04: 'AVX registers' [ 0.000000] x86/fpu: Enabled xstate features 0x7, context size is 832 bytes, using 'standard' format. [ 0.000000] x86/fpu: Using 'eager' FPU context switches. [ 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] NX (Execute Disable) protection: active [ 0.000000] SMBIOS 2.4 present. [ 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 WC UC- WT [ 0.000000] e820: last_pfn = 0xbfff3 max_arch_pfn = 0x400000000 [ 0.000000] found SMP MP-table at [mem 0x000f23e0-0x000f23ef] mapped at [ffff8800000f23e0] [ 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 0x00000000000F23A0 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] kvm-clock: Using msrs 4b564d01 and 4b564d00 [ 0.000000] kvm-clock: cpu 0, msr 2:1fffd001, primary cpu clock [ 0.000000] kvm-clock: using sched offset of 2355702572 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] 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: 19112604462750000 ns [ 0.000000] setup_percpu: NR_CPUS:64 nr_cpumask_bits:64 nr_cpu_ids:2 nr_node_ids:1 [ 0.000000] PERCPU: Embedded 42 pages/cpu @ffff8801db200000 s134024 r8192 d29816 u1048576 [ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 1935227 [ 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 workqueue.watchdog_thresh=120 [ 0.000000] PID hash table entries: 4096 (order: 3, 32768 bytes) [ 0.000000] Dentry cache hash table entries: 1048576 (order: 11, 8388608 bytes) [ 0.000000] Inode-cache hash table entries: 524288 (order: 10, 4194304 bytes) [ 0.000000] Memory: 6581404K/7863876K available (40422K kernel code, 6136K rwdata, 8808K rodata, 1848K init, 23616K bss, 1282472K reserved, 0K cma-reserved) [ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=1 [ 0.000000] Kernel/User page tables isolation: enabled [ 0.000000] Running RCU self tests [ 0.000000] Preemptible hierarchical RCU implementation. [ 0.000000] RCU lockdep checking is enabled. [ 0.000000] Build-time adjustment of leaf fanout to 64. [ 0.000000] RCU restricting CPUs from NR_CPUS=64 to nr_cpu_ids=2. [ 0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=64, nr_cpu_ids=2 [ 0.000000] NR_IRQS:4352 nr_irqs:440 16 [ 0.000000] console [ttyS0] enabled [ 0.000000] console [ttyS0] enabled [ 0.000000] bootconsole [earlyser0] disabled [ 0.000000] bootconsole [earlyser0] disabled [ 0.000000] Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar [ 0.000000] ... MAX_LOCKDEP_SUBCLASSES: 8 [ 0.000000] ... MAX_LOCK_DEPTH: 48 [ 0.000000] ... MAX_LOCKDEP_KEYS: 8191 [ 0.000000] ... CLASSHASH_SIZE: 4096 [ 0.000000] ... MAX_LOCKDEP_ENTRIES: 32768 [ 0.000000] ... MAX_LOCKDEP_CHAINS: 65536 [ 0.000000] ... CHAINHASH_SIZE: 32768 [ 0.000000] memory used by lock dependency info: 8159 kB [ 0.000000] per task-struct memory footprint: 1920 bytes [ 0.000000] tsc: Detected 2300.000 MHz processor [ 1.115001] Calibrating delay loop (skipped) preset value.. 4600.00 BogoMIPS (lpj=23000000) [ 1.116163] pid_max: default: 32768 minimum: 301 [ 1.116867] ACPI: Core revision 20150930 [ 1.534511] ACPI: 2 ACPI AML tables successfully acquired and loaded [ 1.536419] Security Framework initialized [ 1.537023] SELinux: Initializing. [ 1.537694] AppArmor: AppArmor disabled by boot time parameter [ 1.538594] Mount-cache hash table entries: 16384 (order: 5, 131072 bytes) [ 1.539535] Mountpoint-cache hash table entries: 16384 (order: 5, 131072 bytes) [ 1.543179] Initializing cgroup subsys io [ 1.543800] Initializing cgroup subsys freezer [ 1.544504] Initializing cgroup subsys hugetlb [ 1.545146] Initializing cgroup subsys debug [ 1.545910] CPU: Physical Processor ID: 0 [ 1.547671] mce: CPU supports 32 MCE banks [ 1.548413] Last level iTLB entries: 4KB 1024, 2MB 1024, 4MB 1024 [ 1.549241] Last level dTLB entries: 4KB 1024, 2MB 1024, 4MB 1024, 1GB 4 [ 1.550145] Spectre V2 : Vulnerable: Minimal generic ASM retpoline [ 1.553263] Freeing SMP alternatives memory: 44K [ 1.562215] ..TIMER: vector=0x30 apic1=0 pin1=0 apic2=-1 pin2=-1 [ 1.674328] smpboot: CPU0: Intel(R) Xeon(R) CPU @ 2.30GHz (family: 0x6, model: 0x3f, stepping: 0x0) [ 1.675867] Performance Events: unsupported p6 CPU model 63 no PMU driver, software events only. [ 1.764587] x86: Booting SMP configuration: [ 1.765316] .... node #0, CPUs: #1 [ 1.766168] kvm-clock: cpu 1, msr 2:1fffd041, secondary cpu clock [ 1.770883] x86: Booted up 1 node, 2 CPUs [ 1.771465] smpboot: Total of 2 processors activated (9200.00 BogoMIPS) [ 1.776127] devtmpfs: initialized [ 1.785534] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns [ 1.786916] futex hash table entries: 512 (order: 4, 65536 bytes) [ 1.788576] xor: automatically using best checksumming function: [ 1.802108] kworker/u4:0 (21) used greatest stack depth: 27944 bytes left [ 1.884343] avx : 21698.400 MB/sec [ 1.885557] RTC time: 2:20:16, date: 03/24/18 [ 1.887815] NET: Registered protocol family 16 [ 1.888978] schedtune: init normalization constants... [ 1.889720] schedtune: no energy model data [ 1.890332] schedtune: disabled! [ 1.924526] cpuidle: using governor ladder [ 1.954364] cpuidle: using governor menu [ 1.955667] ACPI: bus type PCI registered [ 1.956264] acpiphp: ACPI Hot Plug PCI Controller Driver version: 0.5 [ 1.959116] PCI: Using configuration type 1 for base access [ 1.972643] kworker/u4:0 (44) used greatest stack depth: 27448 bytes left [ 2.384363] raid6: sse2x1 gen() 4779 MB/s [ 2.554290] raid6: sse2x1 xor() 2592 MB/s [ 2.724285] raid6: sse2x2 gen() 7057 MB/s [ 2.894273] raid6: sse2x2 xor() 4082 MB/s [ 3.064264] raid6: sse2x4 gen() 8732 MB/s [ 3.234257] raid6: sse2x4 xor() 5314 MB/s [ 3.404242] raid6: avx2x1 gen() 9473 MB/s [ 3.574233] raid6: avx2x2 gen() 14716 MB/s [ 3.744223] raid6: avx2x4 gen() 19384 MB/s [ 3.744881] raid6: using algorithm avx2x4 gen() 19384 MB/s [ 3.745666] raid6: using avx2x2 recovery algorithm [ 3.747007] ACPI: Added _OSI(Module Device) [ 3.747630] ACPI: Added _OSI(Processor Device) [ 3.748241] ACPI: Added _OSI(3.0 _SCP Extensions) [ 3.748903] ACPI: Added _OSI(Processor Aggregator Device) [ 3.774499] ACPI: Executed 2 blocks of module-level executable AML code [ 4.610912] ACPI: Interpreter enabled [ 4.611925] ACPI: (supports S0 S3 S4 S5) [ 4.612500] ACPI: Using IOAPIC for interrupt routing [ 4.613629] PCI: Using host bridge windows from ACPI; if necessary, use "pci=nocrs" and report a bug [ 5.741725] ACPI: PCI Root Bridge [PCI0] (domain 0000 [bus 00-ff]) [ 5.742745] acpi PNP0A03:00: _OSC: OS supports [ASPM ClockPM Segments MSI] [ 5.744078] acpi PNP0A03:00: _OSC failed (AE_NOT_FOUND); disabling ASPM [ 5.745115] acpi PNP0A03:00: fail to add MMCONFIG information, can't access extended PCI configuration space under this bridge. [ 5.770467] PCI host bridge to bus 0000:00 [ 5.771120] pci_bus 0000:00: root bus resource [io 0x0000-0x0cf7 window] [ 5.772050] pci_bus 0000:00: root bus resource [io 0x0d00-0xffff window] [ 5.773004] pci_bus 0000:00: root bus resource [mem 0x000a0000-0x000bffff window] [ 5.774038] pci_bus 0000:00: root bus resource [mem 0xc0000000-0xfebfffff window] [ 5.775106] pci_bus 0000:00: root bus resource [bus 00-ff] [ 5.808768] pci 0000:00:01.3: quirk: [io 0xb000-0xb03f] claimed by PIIX4 ACPI [ 5.882693] ACPI: PCI Interrupt Link [LNKA] (IRQs 5 *10 11) [ 5.888454] ACPI: PCI Interrupt Link [LNKB] (IRQs 5 *10 11) [ 5.893885] ACPI: PCI Interrupt Link [LNKC] (IRQs 5 10 *11) [ 5.899338] ACPI: PCI Interrupt Link [LNKD] (IRQs 5 10 *11) [ 5.902761] ACPI: PCI Interrupt Link [LNKS] (IRQs *9) [ 6.437598] ACPI: Enabled 16 GPEs in block 00 to 0F [ 6.441300] vgaarb: loaded [ 6.445290] SCSI subsystem initialized [ 6.462660] ACPI: bus type USB registered [ 6.464339] usbcore: registered new interface driver usbfs [ 6.465900] usbcore: registered new interface driver hub [ 6.466921] usbcore: registered new device driver usb [ 6.469471] pps_core: LinuxPPS API ver. 1 registered [ 6.470441] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti [ 6.471877] PTP clock support registered [ 6.473786] ioremap error for 0xbfffd000-0xc0000000, requested 0x2, got 0x0 [ 6.474941] dmi: Firmware registration failed. [ 6.476358] Advanced Linux Sound Architecture Driver Initialized. [ 6.477996] PCI: Using ACPI for IRQ routing [ 6.485926] NetLabel: Initializing [ 6.486452] NetLabel: domain hash size = 128 [ 6.487071] NetLabel: protocols = UNLABELED CIPSOv4 [ 6.488084] NetLabel: unlabeled traffic allowed by default [ 6.490563] amd_nb: Cannot enumerate AMD northbridges [ 6.491370] clocksource: Switched to clocksource kvm-clock [ 6.648583] pnp: PnP ACPI init [ 6.670777] pnp: PnP ACPI: found 7 devices [ 6.684629] clocksource: acpi_pm: mask: 0xffffff max_cycles: 0xffffff, max_idle_ns: 2085701024 ns [ 6.686250] NET: Registered protocol family 2 [ 6.688711] TCP established hash table entries: 65536 (order: 7, 524288 bytes) [ 6.690266] TCP bind hash table entries: 65536 (order: 10, 4194304 bytes) [ 6.697860] TCP: Hash tables configured (established 65536 bind 65536) [ 6.699003] UDP hash table entries: 4096 (order: 7, 655360 bytes) [ 6.700609] UDP-Lite hash table entries: 4096 (order: 7, 655360 bytes) [ 6.703887] NET: Registered protocol family 1 [ 6.704622] pci 0000:00:00.0: Limiting direct PCI/PCI transfers [ 6.706341] PCI-DMA: Using software bounce buffering for IO (SWIOTLB) [ 6.707248] software IO TLB [mem 0xbbff3000-0xbfff3000] (64MB) mapped at [ffff8800bbff3000-ffff8800bfff2fff] [ 6.709143] RAPL PMU detected, API unit is 2^-32 Joules, 3 fixed counters 10737418240 ms ovfl timer [ 6.710429] hw unit of domain pp0-core 2^-0 Joules [ 6.711081] hw unit of domain package 2^-0 Joules [ 6.711924] hw unit of domain dram 2^-16 Joules [ 6.717849] Scanning for low memory corruption every 60 seconds [ 6.725863] audit: initializing netlink subsys (disabled) [ 6.726898] audit: type=2000 audit(1521858021.259:1): initialized [ 6.735031] HugeTLB registered 2 MB page size, pre-allocated 0 pages [ 6.864929] VFS: Disk quotas dquot_6.6.0 [ 6.866553] VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes) [ 6.888931] fuse init (API version 7.23) [ 6.894520] 9p: Installing v9fs 9p2000 file system support [ 6.908142] async_tx: api initialized (async) [ 6.909857] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 249) [ 6.911026] io scheduler noop registered [ 6.913070] io scheduler deadline registered [ 6.915431] io scheduler cfq registered (default) [ 6.926254] pci_hotplug: PCI Hot Plug PCI Core version: 0.5 [ 6.929716] input: Power Button as /devices/LNXSYSTM:00/LNXPWRBN:00/input/input0 [ 6.930912] ACPI: Power Button [PWRF] [ 6.933851] input: Sleep Button as /devices/LNXSYSTM:00/LNXSLPBN:00/input/input1 [ 6.935093] ACPI: Sleep Button [SLPF] [ 6.958115] ACPI: PCI Interrupt Link [LNKC] enabled at IRQ 11 [ 6.959089] virtio-pci 0000:00:03.0: virtio_pci: leaving for legacy driver [ 6.980187] ACPI: PCI Interrupt Link [LNKD] enabled at IRQ 10 [ 6.981136] virtio-pci 0000:00:04.0: virtio_pci: leaving for legacy driver [ 6.987616] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled [ 7.010996] 00:03: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a 16550A