[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 18.880657] random: sshd: uninitialized urandom read (32 bytes read, 32 bits of entropy available) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 23.637472] random: sshd: uninitialized urandom read (32 bytes read, 37 bits of entropy available) [ 23.843330] random: sshd: uninitialized urandom read (32 bytes read, 37 bits of entropy available) [ 24.916699] random: sshd: uninitialized urandom read (32 bytes read, 127 bits of entropy available) [ 25.026377] random: nonblocking pool is initialized Warning: Permanently added '10.128.0.11' (ECDSA) to the list of known hosts. 2018/05/26 21:40:46 parsed 1 programs 2018/05/26 21:40:46 executed programs: 0 [ 30.976779] IPVS: Creating netns size=2552 id=1 [ 31.148758] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 31.164329] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 31.243094] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 31.258098] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 31.337567] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 31.353320] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 31.370354] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 31.386678] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 32.106570] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 32.144958] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 33.497927] ================================================================== [ 33.505340] BUG: KASAN: use-after-free in l2tp_session_queue_purge+0xf4/0x100 [ 33.512609] Read of size 4 at addr ffff8800b1880780 by task syz-executor0/4196 [ 33.519942] [ 33.521548] CPU: 1 PID: 4196 Comm: syz-executor0 Not tainted 4.4.133-g3f51ea2 #49 [ 33.529149] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 33.538478] 0000000000000000 004bc5c1493e4204 ffff8800ba487ad8 ffffffff81e0e4cd [ 33.546460] ffffea0002c62000 ffff8800b1880780 0000000000000000 ffff8800b1880780 [ 33.554495] ffffffff82f191d0 ffff8800ba487b10 ffffffff815154cc ffff8800b1880780 [ 33.562490] Call Trace: [ 33.565062] [] dump_stack+0xc1/0x124 [ 33.570410] [] ? sock_release+0x1c0/0x1c0 [ 33.576191] [] print_address_description+0x6c/0x216 [ 33.582855] [] ? sock_release+0x1c0/0x1c0 [ 33.588630] [] kasan_report.cold.7+0x175/0x2f7 [ 33.594838] [] ? l2tp_session_queue_purge+0xf4/0x100 [ 33.601566] [] __asan_report_load4_noabort+0x14/0x20 [ 33.608291] [] l2tp_session_queue_purge+0xf4/0x100 [ 33.614851] [] ? sock_release+0x1c0/0x1c0 [ 33.620621] [] pppol2tp_release+0x1ff/0x310 [ 33.626570] [] sock_release+0x96/0x1c0 [ 33.632082] [] sock_close+0x16/0x20 [ 33.637335] [] __fput+0x235/0x6f0 [ 33.642410] [] ____fput+0x15/0x20 [ 33.647506] [] task_work_run+0x10f/0x190 [ 33.653199] [] do_exit+0x9e5/0x26b0 [ 33.658477] [] ? handle_mm_fault+0x19d8/0x30b0 [ 33.664682] [] ? release_task.part.17+0x1200/0x1200 [ 33.671330] [] do_group_exit+0x111/0x330 [ 33.677019] [] ? do_group_exit+0x330/0x330 [ 33.682879] [] SyS_exit_group+0x1d/0x20 [ 33.688478] [] do_fast_syscall_32+0x326/0x8b0 [ 33.694597] [] sysenter_flags_fixed+0xd/0x17 [ 33.700627] [ 33.702228] Allocated by task 4194: [ 33.705826] [] save_stack_trace+0x26/0x50 [ 33.711720] [] save_stack+0x43/0xd0 [ 33.717093] [] kasan_kmalloc+0xc7/0xe0 [ 33.722731] [] __kmalloc+0x124/0x310 [ 33.728198] [] l2tp_session_create+0x39/0x1030 [ 33.734526] [] pppol2tp_connect+0x10f0/0x1910 [ 33.740765] [] SYSC_connect+0x1b8/0x300 [ 33.746486] [] SyS_connect+0x24/0x30 [ 33.751952] [] do_fast_syscall_32+0x326/0x8b0 [ 33.758188] [] sysenter_flags_fixed+0xd/0x17 [ 33.764350] [ 33.765957] Freed by task 4185: [ 33.769219] [] save_stack_trace+0x26/0x50 [ 33.775110] [] save_stack+0x43/0xd0 [ 33.780498] [] kasan_slab_free+0x72/0xc0 [ 33.786310] [] kfree+0xf4/0x310 [ 33.791335] [] l2tp_session_free+0x170/0x200 [ 33.797495] [] l2tp_tunnel_closeall+0x2b9/0x350 [ 33.803915] [] l2tp_udp_encap_destroy+0x8b/0xf0 [ 33.810341] [] udpv6_destroy_sock+0xb1/0xd0 [ 33.816426] [] sk_common_release+0x6d/0x300 [ 33.822493] [] udp_lib_close+0x15/0x20 [ 33.828126] [] inet_release+0xff/0x1d0 [ 33.833761] [] inet6_release+0x50/0x70 [ 33.839392] [] sock_release+0x96/0x1c0 [ 33.845120] [] sock_close+0x16/0x20 [ 33.850504] [] __fput+0x235/0x6f0 [ 33.855705] [] ____fput+0x15/0x20 [ 33.860902] [] task_work_run+0x10f/0x190 [ 33.866740] [] do_exit+0x9e5/0x26b0 [ 33.872112] [] do_group_exit+0x111/0x330 [ 33.877928] [] SyS_exit_group+0x1d/0x20 [ 33.883653] [] do_fast_syscall_32+0x326/0x8b0 [ 33.889896] [] sysenter_flags_fixed+0xd/0x17 [ 33.896088] [ 33.897694] The buggy address belongs to the object at ffff8800b1880780 [ 33.897694] which belongs to the cache kmalloc-512 of size 512 [ 33.910319] The buggy address is located 0 bytes inside of [ 33.910319] 512-byte region [ffff8800b1880780, ffff8800b1880980) [ 33.921994] The buggy address belongs to the page: [ 33.955165] kasan: CONFIG_KASAN_INLINE enabled [ 33.959610] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN [ 33.972585] Dumping ftrace buffer: [ 33.976121] (ftrace buffer empty) [ 33.979835] Modules linked in: [ 33.983157] CPU: 0 PID: 3696 Comm: syz-executor0 Not tainted 4.4.133-g3f51ea2 #49 [ 33.990770] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.000124] task: ffff8801cd858000 task.stack: ffff8801cd818000 [ 34.006175] RIP: 0010:[] [] timerqueue_add+0xb8/0x2b0 [ 34.014738] RSP: 0018:ffff8801cd81fa68 EFLAGS: 00010007 [ 34.020189] RAX: ffffed0039b03fa8 RBX: ffff8801cd81fd28 RCX: 0000000000000000 [ 34.027462] RDX: 000000001083e1e8 RSI: ffffffff81e2be1c RDI: 00000000841f0f46 [ 34.034734] RBP: ffff8801cd81faa8 R08: 0000000000000092 R09: 0000000000000001 [ 34.042003] R10: 0000000000000000 R11: ffff8801cd858000 R12: dffffc0000000000 [ 34.049272] R13: 00000000841f0f2e R14: 000000078c4e8981 R15: ffffffff8148cc17 [ 34.056545] FS: 0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:00000000090dc900 [ 34.064769] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 34.070652] CR2: 0000000000ec8c08 CR3: 00000001d472f000 CR4: 00000000001606f0 [ 34.077984] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.085273] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.092536] Stack: [ 34.094695] ffff8801cd81fd40 ffff8801db219710 ffffed0039b03fa8 ffff8801db219700 [ 34.102782] ffff8801cd81fd28 ffff8801db219640 0000000000000001 0000000000000000 [ 34.110850] ffff8801cd81fae0 ffffffff8129b1df 0000000000000e70 ffff8801db219700 [ 34.118913] Call Trace: [ 34.121503] [] enqueue_hrtimer+0x15f/0x440 [ 34.127391] [] hrtimer_start_range_ns+0x581/0x1420 [ 34.133986] [] ? __remove_hrtimer+0x250/0x250 [ 34.140145] [] ? _raw_spin_unlock_irqrestore+0x5a/0x70 [ 34.147077] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 34.153929] [] do_nanosleep+0x196/0x4f0 [ 34.159562] [] ? schedule_timeout_uninterruptible+0x90/0x90 [ 34.166928] [] ? memset+0x31/0x40 [ 34.172040] [] hrtimer_nanosleep+0x210/0x540 [ 34.178107] [] ? hrtimer_run_queues+0x1c0/0x1c0 [ 34.184434] [] ? clock_was_set_work+0x30/0x30 [ 34.190589] [] ? do_nanosleep+0x196/0x4f0 [ 34.196404] [] ? __compat_get_timespec.isra.10+0xdd/0x150 [ 34.203602] [] compat_SyS_nanosleep+0x27e/0x390 [ 34.209929] [] ? compat_convert_timespec+0x1f0/0x1f0 [ 34.216694] [] ? compat_SyS_clock_gettime+0x115/0x1a0 [ 34.223541] [] ? do_fast_syscall_32+0xdb/0x8b0 [ 34.229782] [] ? compat_convert_timespec+0x1f0/0x1f0 [ 34.236540] [] do_fast_syscall_32+0x326/0x8b0 [ 34.243882] [] sysenter_flags_fixed+0xd/0x17 [ 34.249937] Code: 00 00 4d 8b 2f 4d 85 ed 74 3d e8 14 55 52 ff 48 8b 45 d0 80 38 00 0f 85 96 01 00 00 49 8d 7d 18 4c 8b 73 18 48 89 fa 48 c1 ea 03 <42> 80 3c 22 00 0f 85 8a 01 00 00 4d 3b 75 18 7c a3 e8 e2 54 52 [ 34.277599] RIP [] timerqueue_add+0xb8/0x2b0 [ 34.283801] RSP [ 34.287430] ---[ end trace 04e678c6ee1c23a9 ]--- [ 34.292184] 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 0x000f2350: PCHS=0/0/0 translation=lba LCHS=520/128/63 s=4194304 Booting from Hard Disk 0... early console in decompress_kernel input_data: 0x0000000003b5226e input_len: 0x00000000014cba61 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 4.4.133-g3f51ea2 (syzkaller@ci) (gcc version 8.0.1 20180413 (experimental) (GCC) ) #49 SMP PREEMPT Sat May 26 11:31:36 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 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] 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] 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 0x000f23d0-0x000f23df] mapped at [ffff8800000f23d0] [ 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 0x00000000000F2390 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 2143399817 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 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 (41755K kernel code, 6301K rwdata, 9048K 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 [ 1.452672] Calibrating delay loop (skipped) preset value.. 4600.00 BogoMIPS (lpj=23000000) [ 1.453865] pid_max: default: 32768 minimum: 301 [ 1.454620] ACPI: Core revision 20150930 [ 1.857881] ACPI: 2 ACPI AML tables successfully acquired and loaded [ 1.859189] Security Framework initialized [ 1.859760] SELinux: Initializing. [ 1.860416] AppArmor: AppArmor disabled by boot time parameter [ 1.861341] Mount-cache hash table entries: 16384 (order: 5, 131072 bytes) [ 1.862373] Mountpoint-cache hash table entries: 16384 (order: 5, 131072 bytes) [ 1.865946] Initializing cgroup subsys io [ 1.866625] Initializing cgroup subsys freezer [ 1.867405] Initializing cgroup subsys hugetlb [ 1.868075] Initializing cgroup subsys debug [ 1.868866] CPU: Physical Processor ID: 0 [ 1.870598] mce: CPU supports 32 MCE banks [ 1.871378] Last level iTLB entries: 4KB 1024, 2MB 1024, 4MB 1024 [ 1.872345] Last level dTLB entries: 4KB 1024, 2MB 1024, 4MB 1024, 1GB 4 [ 1.873324] Spectre V2 : Mitigation: Full generic retpoline [ 1.876381] Freeing SMP alternatives memory: 48K [ 1.886230] ..TIMER: vector=0x30 apic1=0 pin1=0 apic2=-1 pin2=-1 [ 2.002056] smpboot: CPU0: Intel(R) Xeon(R) CPU @ 2.30GHz (family: 0x6, model: 0x3f, stepping: 0x0) [ 2.005034] Performance Events: unsupported p6 CPU model 63 no PMU driver, software events only. [ 2.092390] x86: Booting SMP configuration: [ 2.093084] .... node #0, CPUs: #1 [ 2.093979] kvm-clock: cpu 1, msr 2:1fffd041, secondary cpu clock [ 2.098658] x86: Booted up 1 node, 2 CPUs [ 2.099256] smpboot: Total of 2 processors activated (9200.00 BogoMIPS) [ 2.103377] devtmpfs: initialized [ 2.113718] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns [ 2.115132] futex hash table entries: 512 (order: 4, 65536 bytes) [ 2.116819] xor: automatically using best checksumming function: [ 2.129867] kworker/u4:0 (21) used greatest stack depth: 27424 bytes left [ 2.212104] avx : 21578.800 MB/sec [ 2.213388] RTC time: 21:40:55, date: 05/26/18 [ 2.216528] NET: Registered protocol family 16 [ 2.217673] schedtune: init normalization constants... [ 2.218415] schedtune: no energy model data [ 2.218992] schedtune: disabled! [ 2.252390] cpuidle: using governor ladder [ 2.282159] cpuidle: using governor menu [ 2.283491] ACPI: bus type PCI registered [ 2.284069] acpiphp: ACPI Hot Plug PCI Controller Driver version: 0.5 [ 2.286987] PCI: Using configuration type 1 for base access [ 2.742197] raid6: sse2x1 gen() 4681 MB/s [ 2.912221] raid6: sse2x1 xor() 2617 MB/s [ 3.082251] raid6: sse2x2 gen() 7038 MB/s [ 3.252275] raid6: sse2x2 xor() 4067 MB/s [ 3.422300] raid6: sse2x4 gen() 8696 MB/s [ 3.592330] raid6: sse2x4 xor() 5363 MB/s [ 3.762355] raid6: avx2x1 gen() 9444 MB/s [ 3.932385] raid6: avx2x2 gen() 14682 MB/s [ 4.102415] raid6: avx2x4 gen() 19256 MB/s [ 4.103100] raid6: using algorithm avx2x4 gen() 19256 MB/s [ 4.103863] raid6: using avx2x2 recovery algorithm [ 4.105205] ACPI: Added _OSI(Module Device) [ 4.105913] ACPI: Added _OSI(Processor Device) [ 4.106526] ACPI: Added _OSI(3.0 _SCP Extensions) [ 4.107241] ACPI: Added _OSI(Processor Aggregator Device) [ 4.133978] ACPI: Executed 2 blocks of module-level executable AML code [ 5.050215] ACPI: Interpreter enabled [ 5.051220] ACPI: (supports S0 S3 S4 S5) [ 5.051772] ACPI: Using IOAPIC for interrupt routing [ 5.052949] PCI: Using host bridge windows from ACPI; if necessary, use "pci=nocrs" and report a bug