[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 18.892679] random: sshd: uninitialized urandom read (32 bytes read, 31 bits of entropy available) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 23.578978] random: sshd: uninitialized urandom read (32 bytes read, 35 bits of entropy available) [ 23.798605] random: sshd: uninitialized urandom read (32 bytes read, 35 bits of entropy available) [ 25.070200] random: sshd: uninitialized urandom read (32 bytes read, 119 bits of entropy available) [ 34.935204] random: sshd: uninitialized urandom read (32 bytes read, 126 bits of entropy available) Warning: Permanently added '10.128.15.201' (ECDSA) to the list of known hosts. [ 40.379480] random: nonblocking pool is initialized executing program [ 40.606396] ================================================================== [ 40.613767] BUG: KASAN: use-after-free in l2tp_session_queue_purge+0xf4/0x100 [ 40.621018] Read of size 4 at addr ffff8801cbb8cf00 by task syz-executor371/3794 [ 40.628518] [ 40.630118] CPU: 1 PID: 3794 Comm: syz-executor371 Not tainted 4.4.140-ged9bdc8 #68 [ 40.637974] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 40.647304] 0000000000000000 505f7a758302d437 ffff8800aeb27a80 ffffffff81e0e08d [ 40.655285] ffffea00072ee300 ffff8801cbb8cf00 0000000000000000 ffff8801cbb8cf00 [ 40.663306] ffffffff82f19f30 ffff8800aeb27ab8 ffffffff81515a56 ffff8801cbb8cf00 [ 40.671295] Call Trace: [ 40.673872] [] dump_stack+0xc1/0x124 [ 40.679221] [] ? sock_release+0x1c0/0x1c0 [ 40.685341] [] print_address_description+0x6c/0x216 [ 40.691980] [] ? sock_release+0x1c0/0x1c0 [ 40.697750] [] kasan_report.cold.7+0x175/0x2f7 [ 40.703955] [] ? l2tp_session_queue_purge+0xf4/0x100 [ 40.710684] [] __asan_report_load4_noabort+0x14/0x20 [ 40.717424] [] l2tp_session_queue_purge+0xf4/0x100 [ 40.723979] [] ? sock_release+0x1c0/0x1c0 [ 40.729746] [] pppol2tp_release+0x1ff/0x310 [ 40.735698] [] sock_release+0x96/0x1c0 [ 40.741205] [] sock_close+0x16/0x20 [ 40.746455] [] __fput+0x235/0x6f0 [ 40.751528] [] ____fput+0x15/0x20 [ 40.756605] [] task_work_run+0x10f/0x190 [ 40.762386] [] get_signal+0x1190/0x14b0 [ 40.767983] [] ? fput+0x20/0x150 [ 40.772979] [] do_signal+0x8b/0x1d30 [ 40.778318] [] ? security_socket_connect+0x8f/0xc0 [ 40.784866] [] ? setup_sigcontext+0x780/0x780 [ 40.790983] [] ? SYSC_connect+0x22a/0x300 [ 40.796750] [] ? SYSC_bind+0x280/0x280 [ 40.802260] [] ? exit_to_usermode_loop+0xe4/0x160 [ 40.808720] [] exit_to_usermode_loop+0x11a/0x160 [ 40.815098] [] syscall_return_slowpath+0x1b5/0x1f0 [ 40.821650] [] int_ret_from_sys_call+0x25/0xa3 [ 40.827849] [ 40.829448] Allocated by task 3794: [ 40.833043] [] save_stack_trace+0x26/0x50 [ 40.838940] [] save_stack+0x43/0xd0 [ 40.844313] [] kasan_kmalloc+0xc7/0xe0 [ 40.849935] [] __kmalloc+0x124/0x310 [ 40.855390] [] l2tp_session_create+0x39/0x1030 [ 40.861710] [] pppol2tp_connect+0x10f0/0x1910 [ 40.867950] [] SYSC_connect+0x1b8/0x300 [ 40.873665] [] SyS_connect+0x24/0x30 [ 40.879131] [] entry_SYSCALL_64_fastpath+0x22/0x9e [ 40.885796] [ 40.887394] Freed by task 3793: [ 40.890639] [] save_stack_trace+0x26/0x50 [ 40.896540] [] save_stack+0x43/0xd0 [ 40.901919] [] kasan_slab_free+0x72/0xc0 [ 40.907724] [] kfree+0xf4/0x310 [ 40.912742] [] l2tp_session_free+0x170/0x200 [ 40.918886] [] l2tp_tunnel_closeall+0x2b9/0x350 [ 40.925306] [] l2tp_udp_encap_destroy+0x8b/0xf0 [ 40.931710] [] udpv6_destroy_sock+0xb1/0xd0 [ 40.937770] [] sk_common_release+0x6d/0x300 [ 40.943838] [] udp_lib_close+0x15/0x20 [ 40.949461] [] inet_release+0xff/0x1d0 [ 40.955087] [] inet6_release+0x50/0x70 [ 40.960721] [] sock_release+0x96/0x1c0 [ 40.966347] [] sock_close+0x16/0x20 [ 40.971722] [] __fput+0x235/0x6f0 [ 40.976922] [] ____fput+0x15/0x20 [ 40.982124] [] task_work_run+0x10f/0x190 [ 40.987932] [] get_signal+0x1190/0x14b0 [ 40.993649] [] do_signal+0x8b/0x1d30 [ 40.999102] [] exit_to_usermode_loop+0x11a/0x160 [ 41.005594] [] syscall_return_slowpath+0x1b5/0x1f0 [ 41.012262] [] int_ret_from_sys_call+0x25/0xa3 [ 41.018594] [ 41.020212] The buggy address belongs to the object at ffff8801cbb8cf00 [ 41.020212] which belongs to the cache kmalloc-512 of size 512 [ 41.032837] The buggy address is located 0 bytes inside of [ 41.032837] 512-byte region [ffff8801cbb8cf00, ffff8801cbb8d100) [ 41.044506] The buggy address belongs to the page: [ 41.376242] BUG: unable to handle kernel paging request at fffffffde267c6c0 [ 41.383608] IP: [] cpuacct_charge+0x155/0x380 [ 41.389784] PGD 440f067 PUD 0 [ 41.393188] Oops: 0000 [#1] PREEMPT SMP KASAN [ 41.398141] Dumping ftrace buffer: [ 41.401658] (ftrace buffer empty) [ 41.405353] Modules linked in: [ 41.408642] CPU: 0 PID: 490 Comm: kworker/0:1 Not tainted 4.4.140-ged9bdc8 #68 [ 41.415969] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 41.425304] Workqueue: events vmstat_shepherd [ 41.429886] task: ffff8800bacd9800 task.stack: ffff8800bac38000 [ 41.435930] RIP: 0010:[] [] cpuacct_charge+0x155/0x380 [ 41.444528] RSP: 0018:ffff8800bac3f8b8 EFLAGS: 00010046 [ 41.449946] RAX: 1ffffffff089500f RBX: 0000000000018528 RCX: ffffffff84a14ec0 [ 41.457197] RDX: fffffbffbc4cf8d8 RSI: fffffffde267c6c0 RDI: ffffffff844a8078 [ 41.464448] RBP: ffff8800bac3f8f8 R08: ffff8800bacda1f0 R09: 0000000000000001 [ 41.471696] R10: 0000000000000001 R11: ffff8800bacd9800 R12: ffffffff844a7fa0 [ 41.478937] R13: dffffc0000000000 R14: 000000002de44818 R15: ffffffffcbb8cf00 [ 41.486181] FS: 0000000000000000(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 41.494556] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 41.500409] CR2: fffffffde267c6c0 CR3: 00000001d1892000 CR4: 00000000001606f0 [ 41.507665] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 41.514905] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 41.522144] Stack: [ 41.524261] ffffffff81224c00 0000000000000046 0000000000000003 ffff8801d9304860 [ 41.532248] ffff8801d9304800 000000002de44818 ffff8801d93048b0 0000000000000000 [ 41.540232] ffff8800bac3f940 ffffffff811d9279 0000000000000005 ffff8801db31f4d8 [ 41.548221] Call Trace: [ 41.550796] [] ? cpuacct_charge+0x60/0x380 [ 41.556656] [] update_curr+0x2c9/0x6d0 [ 41.562167] [] enqueue_task_fair+0x2fa/0x2790 [ 41.568300] [] activate_task+0x14d/0x280 [ 41.573994] [] ttwu_do_activate.constprop.109+0xbf/0x1e0 [ 41.581213] [] try_to_wake_up+0x660/0xf00 [ 41.586992] [] ? __lock_is_held+0xa2/0xf0 [ 41.592762] [] wake_up_process+0x15/0x20 [ 41.598451] [] insert_work+0x17a/0x210 [ 41.603970] [] __queue_work+0x3dc/0xea0 [ 41.609577] [] __queue_delayed_work+0x23f/0x390 [ 41.615868] [] queue_delayed_work_on+0x59/0xb0 [ 41.622161] [] vmstat_shepherd+0x166/0x230 [ 41.628018] [] process_one_work+0x7df/0x1600 [ 41.634058] [] ? process_one_work+0x6fa/0x1600 [ 41.640272] [] ? cancel_delayed_work_sync+0x20/0x20 [ 41.646910] [] worker_thread+0xd9/0xfc0 [ 41.652512] [] ? _raw_spin_unlock_irqrestore+0x5a/0x70 [ 41.659427] [] kthread+0x268/0x300 [ 41.664590] [] ? process_one_work+0x1600/0x1600 [ 41.670880] [] ? kthread_create_on_node+0x400/0x400 [ 41.677516] [] ? kthread_create_on_node+0x400/0x400 [ 41.684157] [] ret_from_fork+0x55/0x80 [ 41.689666] [] ? kthread_create_on_node+0x400/0x400 [ 41.696306] Code: 49 8d bc 24 d8 00 00 00 48 89 f8 48 c1 e8 03 42 80 3c 28 00 0f 85 c4 01 00 00 49 8b 9c 24 d8 00 00 00 80 3a 00 0f 85 8f 01 00 00 <4a> 03 1c f9 48 89 d8 48 c1 e8 03 42 80 3c 28 00 0f 85 be 01 00 [ 41.723287] RIP [] cpuacct_charge+0x155/0x380 [ 41.729523] RSP [ 41.733120] CR2: fffffffde267c6c0 [ 41.736571] ---[ end trace 4e1c138e2a139534 ]--- [ 41.741298] Kernel panic - not syncing: Fatal exception SeaBIOS (version 1.8.2-20171130_102032-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 0x000f2290: PCHS=0/0/0 translation=lba LCHS=520/128/63 s=4194304 Booting from Hard Disk 0... early console in decompress_kernel input_data: 0x0000000003b5126e input_len: 0x00000000014cbe81 output: 0x0000000001000000 output_len: 0x0000000004008a40 run_size: 0x0000000005752000 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 4.4.140-ged9bdc8 (syzkaller@ci) (gcc version 8.0.1 20180413 (experimental) (GCC) ) #68 SMP PREEMPT Fri Jul 13 14:04:46 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=140 nopti [ 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] 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] Kernel/User page tables isolation: disabled [ 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 0x000f2310-0x000f231f] mapped at [ffff8800000f2310] [ 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 0x00000000000F22D0 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 2128064575 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=140 nopti [ 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: 6579092K/7863876K available (41761K kernel code, 6302K rwdata, 9052K rodata, 1864K init, 23696K bss, 1284784K reserved, 0K cma-reserved) [ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=1 [ 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 [ 1.226591] Calibrating delay loop (skipped) preset value.. 4600.00 BogoMIPS (lpj=23000000) [ 1.227746] pid_max: default: 32768 minimum: 301 [ 1.228457] ACPI: Core revision 20150930 [ 1.621016] ACPI: 2 ACPI AML tables successfully acquired and loaded [ 1.622319] Security Framework initialized [ 1.622889] SELinux: Initializing. [ 1.623568] AppArmor: AppArmor disabled by boot time parameter [ 1.624494] Mount-cache hash table entries: 16384 (order: 5, 131072 bytes) [ 1.625494] Mountpoint-cache hash table entries: 16384 (order: 5, 131072 bytes) [ 1.629190] Initializing cgroup subsys io [ 1.629812] Initializing cgroup subsys freezer [ 1.630458] Initializing cgroup subsys hugetlb [ 1.631108] Initializing cgroup subsys debug [ 1.631922] CPU: Physical Processor ID: 0 [ 1.633852] mce: CPU supports 32 MCE banks [ 1.634682] Last level iTLB entries: 4KB 1024, 2MB 1024, 4MB 1024 [ 1.635576] Last level dTLB entries: 4KB 1024, 2MB 1024, 4MB 1024, 1GB 4 [ 1.636574] Spectre V2 : Mitigation: Full generic retpoline [ 1.639681] Freeing SMP alternatives memory: 48K [ 1.656053] ..TIMER: vector=0x30 apic1=0 pin1=0 apic2=-1 pin2=-1 [ 1.775734] smpboot: CPU0: Intel(R) Xeon(R) CPU @ 2.30GHz (family: 0x6, model: 0x3f, stepping: 0x0) [ 1.777276] Performance Events: unsupported p6 CPU model 63 no PMU driver, software events only. [ 1.866005] x86: Booting SMP configuration: [ 1.866686] .... node #0, CPUs: #1 [ 1.867522] kvm-clock: cpu 1, msr 2:1fffd041, secondary cpu clock [ 1.872317] x86: Booted up 1 node, 2 CPUs [ 1.872922] smpboot: Total of 2 processors activated (9200.00 BogoMIPS) [ 1.877003] devtmpfs: initialized [ 1.887125] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns [ 1.888549] futex hash table entries: 512 (order: 4, 65536 bytes) [ 1.890254] xor: automatically using best checksumming function: [ 1.903334] kworker/u4:0 (21) used greatest stack depth: 27920 bytes left [ 1.985735] avx : 23234.400 MB/sec [ 1.986920] RTC time: 5:44:58, date: 07/15/18 [ 1.990120] NET: Registered protocol family 16 [ 1.991330] schedtune: init normalization constants... [ 1.992082] schedtune: no energy model data [ 1.992772] schedtune: disabled! [ 2.022553] cpuidle: using governor ladder [ 2.052278] cpuidle: using governor menu [ 2.054082] ACPI: bus type PCI registered [ 2.054871] acpiphp: ACPI Hot Plug PCI Controller Driver version: 0.5 [ 2.058137] PCI: Using configuration type 1 for base access [ 2.070277] kworker/u4:0 (39) used greatest stack depth: 27088 bytes left [ 2.495722] raid6: sse2x1 gen() 4742 MB/s [ 2.665659] raid6: sse2x1 xor() 2583 MB/s [ 2.835651] raid6: sse2x2 gen() 7013 MB/s [ 3.005627] raid6: sse2x2 xor() 4002 MB/s [ 3.175603] raid6: sse2x4 gen() 8633 MB/s [ 3.345588] raid6: sse2x4 xor() 5287 MB/s [ 3.515586] raid6: avx2x1 gen() 9329 MB/s [ 3.685558] raid6: avx2x2 gen() 14369 MB/s [ 3.855539] raid6: avx2x4 gen() 18631 MB/s [ 3.856201] raid6: using algorithm avx2x4 gen() 18631 MB/s [ 3.857003] raid6: using avx2x2 recovery algorithm [ 3.858398] ACPI: Added _OSI(Module Device) [ 3.859102] ACPI: Added _OSI(Processor Device) [ 3.859713] ACPI: Added _OSI(3.0 _SCP Extensions) [ 3.860357] ACPI: Added _OSI(Processor Aggregator Device) [ 3.886932] ACPI: Executed 2 blocks of module-level executable AML code [ 4.781215] ACPI: Interpreter enabled [ 4.782203] ACPI: (supports S0 S3 S4 S5) [ 4.782751] ACPI: Using IOAPIC for interrupt routing [ 4.783971] PCI: Using host bridge windows from ACPI; if necessary, use "pci=nocrs" and report a bug