[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 20.446012] random: sshd: uninitialized urandom read (32 bytes read, 34 bits of entropy available) [?25l[?1c7[ ok 8[?25h[?0c. [ 20.752161] random: sshd: uninitialized urandom read (32 bytes read, 34 bits of entropy available) [ 20.989659] random: sshd: uninitialized urandom read (32 bytes read, 36 bits of entropy available) [ 21.576818] random: sshd: uninitialized urandom read (32 bytes read, 54 bits of entropy available) Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 115.998294] random: sshd: uninitialized urandom read (32 bytes read, 84 bits of entropy available) INIT: Id "5" respawning too fast: disabled for 5 minutes INIT: Id "4" respawning too fast: disabled for 5 minutes INIT: Id "1" respawning too fast: disabled for 5 minutes INIT: Id "3" respawning too fast: disabled for 5 minutes INIT: Id "6" respawning too fast: disabled for 5 minutes INIT: Id "2" respawning too fast: disabled for 5 minutes Warning: Permanently added '10.128.10.2' (ECDSA) to the list of known hosts. [ 121.426535] random: sshd: uninitialized urandom read (32 bytes read, 86 bits of entropy available) 2018/08/03 13:01:41 parsed 1 programs [ 122.992214] random: cc1: uninitialized urandom read (8 bytes read, 90 bits of entropy available) 2018/08/03 13:01:44 executed programs: 0 [ 124.329838] IPVS: Creating netns size=2552 id=1 [ 124.370689] IPVS: Creating netns size=2552 id=2 [ 124.414421] IPVS: Creating netns size=2552 id=3 [ 124.472005] IPVS: Creating netns size=2552 id=4 [ 124.531197] IPVS: Creating netns size=2552 id=5 [ 124.603902] IPVS: Creating netns size=2552 id=6 [ 124.701852] IPVS: Creating netns size=2552 id=7 [ 124.780291] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 124.793269] IPVS: Creating netns size=2552 id=8 [ 124.871057] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 125.059497] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 125.104066] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 125.131956] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 125.182668] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 125.225017] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 125.268200] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 125.336926] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 125.418918] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 125.440809] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 125.478441] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 125.486187] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 125.513558] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 125.522275] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 125.529352] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 125.615672] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 125.638399] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 125.646317] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 125.723409] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 125.731011] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 125.756979] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 125.781286] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 125.809274] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 125.817075] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 125.825735] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 125.838496] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 125.864501] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 125.902887] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 125.959455] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 125.966612] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 125.979049] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 126.011161] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 126.022737] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 126.034107] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 126.050072] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 126.086967] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 126.096373] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 126.112853] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 126.135808] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 126.145000] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 126.169986] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 126.178418] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 126.186100] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 126.197016] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 126.272822] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 126.306521] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 126.319822] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 126.330797] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 126.358439] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 126.392665] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 126.412406] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 126.451252] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 126.463441] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 126.480367] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 126.506023] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 126.525970] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 126.552183] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 126.566131] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 126.592022] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 126.611191] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 126.623241] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 126.664704] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 126.686263] ip (4669) used greatest stack depth: 23072 bytes left [ 126.698743] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 128.783033] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 129.025360] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 129.113618] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 129.132106] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 129.355676] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 129.383282] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 129.694581] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 129.722779] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 129.788874] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 129.919407] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 129.943444] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 130.003640] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 130.026330] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 130.089183] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 130.178400] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 130.308951] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready 2018/08/03 13:01:50 executed programs: 8 2018/08/03 13:01:55 executed programs: 224 2018/08/03 13:02:00 executed programs: 455 [ 144.008214] ================================================================== [ 144.015603] BUG: KASAN: use-after-free in l2tp_session_queue_purge+0xf4/0x100 [ 144.022851] Read of size 4 at addr ffff8800bad2f900 by task syz-executor0/8372 [ 144.030184] [ 144.031794] CPU: 0 PID: 8372 Comm: syz-executor0 Not tainted 4.4.145-g2241aa9 #14 [ 144.039384] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 144.048713] 0000000000000000 5ec08ceeab372747 ffff8800aec2f8b8 ffffffff81e123cd [ 144.056773] ffffea0002eb4b80 ffff8800bad2f900 0000000000000000 ffff8800bad2f900 [ 144.064774] ffffffff82f1eea0 ffff8800aec2f8f0 ffffffff81517d66 ffff8800bad2f900 [ 144.072806] Call Trace: [ 144.075385] [] dump_stack+0xc1/0x124 [ 144.080741] [] ? sock_release+0x1c0/0x1c0 [ 144.086537] [] print_address_description+0x6c/0x216 [ 144.093194] [] ? sock_release+0x1c0/0x1c0 [ 144.099067] [] kasan_report.cold.7+0x175/0x2f7 [ 144.105276] [] ? l2tp_session_queue_purge+0xf4/0x100 [ 144.112003] [] __asan_report_load4_noabort+0x14/0x20 [ 144.118735] [] l2tp_session_queue_purge+0xf4/0x100 [ 144.125299] [] ? sock_release+0x1c0/0x1c0 [ 144.131079] [] pppol2tp_release+0x1ff/0x310 [ 144.137033] [] sock_release+0x96/0x1c0 [ 144.142546] [] sock_close+0x16/0x20 [ 144.147799] [] __fput+0x235/0x6f0 [ 144.152880] [] ____fput+0x15/0x20 [ 144.157964] [] task_work_run+0x10f/0x190 [ 144.163666] [] do_exit+0x9e5/0x26b0 [ 144.168920] [] ? __sigqueue_free.part.28+0x51/0x60 [ 144.175484] [] ? __sigqueue_free.part.28+0x51/0x60 [ 144.182045] [] ? release_task.part.17+0x1200/0x1200 [ 144.188687] [] do_group_exit+0x111/0x330 [ 144.194374] [] get_signal+0x4ec/0x14b0 [ 144.199885] [] ? set_current_blocked+0x40/0x40 [ 144.206093] [] do_signal+0x8b/0x1d30 [ 144.211439] [] ? is_prefetch.isra.20+0x390/0x390 [ 144.217825] [] ? setup_sigcontext+0x780/0x780 [ 144.223962] [] ? __bad_area_nosemaphore+0x21e/0x310 [ 144.230615] [] ? exit_to_usermode_loop+0xe4/0x160 [ 144.237101] [] exit_to_usermode_loop+0x11a/0x160 [ 144.243506] [] prepare_exit_to_usermode+0xe3/0x100 [ 144.250064] [] retint_user+0x8/0x3c [ 144.255317] [ 144.256928] Allocated by task 8363: [ 144.260526] [] save_stack_trace+0x26/0x50 [ 144.266543] [] save_stack+0x43/0xd0 [ 144.271947] [] kasan_kmalloc+0xc7/0xe0 [ 144.277591] [] __kmalloc+0x124/0x310 [ 144.283051] [] l2tp_session_create+0x39/0x1030 [ 144.289396] [] pppol2tp_connect+0x10f0/0x1910 [ 144.295639] [] SYSC_connect+0x1b8/0x300 [ 144.301375] [] SyS_connect+0x24/0x30 [ 144.306843] [] do_fast_syscall_32+0x324/0x8b0 [ 144.313095] [] sysenter_flags_fixed+0xd/0x1a [ 144.319265] [ 144.320869] Freed by task 8344: [ 144.324125] [] save_stack_trace+0x26/0x50 [ 144.330073] [] save_stack+0x43/0xd0 [ 144.335459] [] kasan_slab_free+0x72/0xc0 [ 144.341311] [] kfree+0xf4/0x310 [ 144.346337] [] l2tp_session_free+0x170/0x200 [ 144.352499] [] l2tp_tunnel_closeall+0x2b9/0x350 [ 144.358922] [] l2tp_udp_encap_destroy+0x8b/0xf0 [ 144.365350] [] udpv6_destroy_sock+0xb1/0xd0 [ 144.371417] [] sk_common_release+0x6d/0x300 [ 144.377514] [] udp_lib_close+0x15/0x20 [ 144.383167] [] inet_release+0xff/0x1d0 [ 144.388814] [] inet6_release+0x50/0x70 [ 144.394459] [] sock_release+0x96/0x1c0 [ 144.400116] [] sock_close+0x16/0x20 [ 144.405497] [] __fput+0x235/0x6f0 [ 144.410727] [] ____fput+0x15/0x20 [ 144.415947] [] task_work_run+0x10f/0x190 [ 144.421777] [] do_exit+0x9e5/0x26b0 [ 144.427148] [] do_group_exit+0x111/0x330 [ 144.432958] [] get_signal+0x4ec/0x14b0 [ 144.438634] [] do_signal+0x8b/0x1d30 [ 144.444110] [] exit_to_usermode_loop+0x11a/0x160 [ 144.450613] [] prepare_exit_to_usermode+0xe3/0x100 [ 144.457303] [] retint_user+0x8/0x3c [ 144.462685] [ 144.464301] The buggy address belongs to the object at ffff8800bad2f900 [ 144.464301] which belongs to the cache kmalloc-512 of size 512 [ 144.476931] The buggy address is located 0 bytes inside of [ 144.476931] 512-byte region [ffff8800bad2f900, ffff8800bad2fb00) [ 144.488611] The buggy address belongs to the page: [ 144.507536] kasan: CONFIG_KASAN_INLINE enabled [ 144.511956] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN [ 144.524918] Dumping ftrace buffer: [ 144.528451] (ftrace buffer empty) [ 144.532161] Modules linked in: [ 144.535483] CPU: 1 PID: 4084 Comm: kpktgend_1 Not tainted 4.4.145-g2241aa9 #14 [ 144.542834] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 144.552182] task: ffff8800b9af0000 task.stack: ffff8800b9a58000 [ 144.558229] RIP: 0010:[] [] __lock_acquire+0x5f4/0x5270 [ 144.566946] RSP: 0000:ffff8800b9a5f9a0 EFLAGS: 00010086 [ 144.572391] RAX: 0000000000000000 RBX: dead4ead00000000 RCX: 1ffff100175a6069 [ 144.579652] RDX: dffffc0000000000 RSI: 0000000000000000 RDI: ffff8800bad30348 [ 144.586912] RBP: ffff8800b9a5fb38 R08: 0000000000000001 R09: 0000000000000001 [ 144.594175] R10: ffffffff83a456e0 R11: ffff8800b9af0000 R12: 0000000000000000 [ 144.601443] R13: ffff8800bad30340 R14: 0000000000000000 R15: 0000000000000000 [ 144.609088] FS: 0000000000000000(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 144.617971] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 144.624490] CR2: 0000000008350038 CR3: 00000000b6740000 CR4: 00000000001606f0 [ 144.632888] Stack: [ 144.635212] 0000000041b58ab3 ffffffff841ec738 ffffffff812312c0 ffff8800b9af08e0 [ 144.644122] 000000000000007b ffff8801d99c85f8 dffffc0000000000 ffff8800b9af0930 [ 144.652784] ffff8800b9af0908 0000000000000002 ffff8800b9a5fab0 0000000000000046 [ 144.661631] Call Trace: [ 144.664878] [] ? debug_check_no_locks_freed+0x210/0x210 [ 144.672020] [] ? debug_check_no_locks_freed+0x210/0x210 [ 144.679035] [] ? __wake_up_sync_key+0x4b/0x60 [ 144.685171] [] ? do_notify_parent+0x73d/0xd50 [ 144.691310] [] lock_acquire+0x15e/0x450 [ 144.696950] [] ? try_to_wake_up+0x2c/0xf00 [ 144.702838] [] ? send_sigqueue+0x830/0x830 [ 144.708721] [] _raw_spin_lock_irqsave+0x4e/0x70 [ 144.715126] [] ? try_to_wake_up+0x2c/0xf00 [ 144.721010] [] try_to_wake_up+0x2c/0xf00 [ 144.727129] [] ? find_first_bit+0x91/0xd0 [ 144.732918] [] wake_up_process+0x15/0x20 [ 144.738627] [] do_exit+0x1f60/0x26b0 [ 144.743988] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 144.750828] [] ? release_task.part.17+0x1200/0x1200 [ 144.757503] [] ? finish_task_switch+0x1bb/0x4e0 [ 144.763816] [] ? prepare_to_wait_event+0x430/0x430 [ 144.770389] [] ? __schedule+0x7d4/0x1d70 [ 144.776095] [] ? _raw_spin_unlock_irqrestore+0x5a/0x70 [ 144.783020] [] ? prepare_to_wait_event+0x430/0x430 [ 144.789593] [] ? __kthread_parkme+0x167/0x240 [ 144.795731] [] kthread+0x21b/0x300 [ 144.800924] [] ? pg_net_exit+0x690/0x690 [ 144.806629] [] ? kthread_create_on_node+0x400/0x400 [ 144.813292] [] ? kthread_create_on_node+0x400/0x400 [ 144.819956] [] ret_from_fork+0x55/0x80 [ 144.825492] [] ? kthread_create_on_node+0x400/0x400 [ 144.832156] Code: 00 fc ff df 44 89 e0 49 8d 7c c5 08 48 89 f9 48 c1 e9 03 80 3c 11 00 0f 85 94 36 00 00 49 8b 5c c5 08 48 85 db 0f 84 21 22 00 00 ff 83 98 01 00 00 49 8d 83 d8 08 00 00 48 89 c2 48 89 44 24 [ 144.859987] RIP [] __lock_acquire+0x5f4/0x5270 [ 144.866358] RSP [ 144.869979] ---[ end trace d61090f1d8a5fb22 ]--- [ 144.874727] Kernel panic - not syncing: Fatal exception SeaBIOS (version 1.8.2-20171012_061934-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: 0x00000000014cf6ba output: 0x0000000001000000 output_len: 0x000000000400ba90 run_size: 0x0000000005755000 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 4.4.145-g2241aa9 (syzkaller@ci) (gcc version 8.0.1 20180413 (experimental) (GCC) ) #14 SMP PREEMPT Wed Aug 1 08:09:05 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 2224735365 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 s134152 r8192 d29688 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: 6579080K/7863876K available (41784K kernel code, 6308K rwdata, 9064K rodata, 1868K init, 23696K bss, 1284796K 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 [ 1.088757] Calibrating delay loop (skipped) preset value.. 4600.00 BogoMIPS (lpj=23000000) [ 1.089974] pid_max: default: 32768 minimum: 301 [ 1.090747] ACPI: Core revision 20150930 [ 1.500393] ACPI: 2 ACPI AML tables successfully acquired and loaded [ 1.501703] Security Framework initialized [ 1.502308] SELinux: Initializing. [ 1.502976] AppArmor: AppArmor disabled by boot time parameter [ 1.503903] Mount-cache hash table entries: 16384 (order: 5, 131072 bytes) [ 1.504835] Mountpoint-cache hash table entries: 16384 (order: 5, 131072 bytes) [ 1.508612] Initializing cgroup subsys io [ 1.509281] Initializing cgroup subsys freezer [ 1.509970] Initializing cgroup subsys hugetlb [ 1.510613] Initializing cgroup subsys debug [ 1.511357] CPU: Physical Processor ID: 0 [ 1.512811] mce: CPU supports 32 MCE banks [ 1.513546] Last level iTLB entries: 4KB 1024, 2MB 1024, 4MB 1024 [ 1.514441] Last level dTLB entries: 4KB 1024, 2MB 1024, 4MB 1024, 1GB 4 [ 1.515379] Spectre V2 : Mitigation: Full generic retpoline [ 1.516192] Speculative Store Bypass: Vulnerable [ 1.519292] Freeing SMP alternatives memory: 48K [ 1.528698] ..TIMER: vector=0x30 apic1=0 pin1=0 apic2=-1 pin2=-1 [ 1.648129] smpboot: CPU0: Intel(R) Xeon(R) CPU @ 2.30GHz (family: 0x6, model: 0x3f, stepping: 0x0) [ 1.649621] Performance Events: unsupported p6 CPU model 63 no PMU driver, software events only. [ 1.738408] x86: Booting SMP configuration: [ 1.739124] .... node #0, CPUs: #1 [ 1.739913] kvm-clock: cpu 1, msr 2:1fffd041, secondary cpu clock [ 1.744829] x86: Booted up 1 node, 2 CPUs [ 1.745480] smpboot: Total of 2 processors activated (9200.00 BogoMIPS) [ 1.749704] devtmpfs: initialized [ 1.760204] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns [ 1.761906] futex hash table entries: 512 (order: 4, 65536 bytes) [ 1.763655] xor: automatically using best checksumming function: [ 1.776091] kworker/u4:0 (21) used greatest stack depth: 27424 bytes left [ 1.858156] avx : 24756.800 MB/sec [ 1.859487] RTC time: 13:02:10, date: 08/03/18 [ 1.862667] NET: Registered protocol family 16 [ 1.863817] schedtune: init normalization constants... [ 1.864528] schedtune: no energy model data [ 1.865146] schedtune: disabled! [ 1.898441] cpuidle: using governor ladder [ 1.928194] cpuidle: using governor menu [ 1.929547] ACPI: bus type PCI registered [ 1.930194] acpiphp: ACPI Hot Plug PCI Controller Driver version: 0.5 [ 1.933277] PCI: Using configuration type 1 for base access [ 2.107203] kworker/u4:1 (326) used greatest stack depth: 27024 bytes left [ 2.408185] raid6: sse2x1 gen() 4367 MB/s [ 2.578173] raid6: sse2x1 xor() 2360 MB/s [ 2.748179] raid6: sse2x2 gen() 6926 MB/s [ 2.918178] raid6: sse2x2 xor() 3961 MB/s [ 3.088184] raid6: sse2x4 gen() 9570 MB/s [ 3.258194] raid6: sse2x4 xor() 5493 MB/s [ 3.428193] raid6: avx2x1 gen() 9324 MB/s [ 3.598203] raid6: avx2x2 gen() 13080 MB/s [ 3.768196] raid6: avx2x4 gen() 17964 MB/s [ 3.768864] raid6: using algorithm avx2x4 gen() 17964 MB/s [ 3.769632] raid6: using avx2x2 recovery algorithm [ 3.771019] ACPI: Added _OSI(Module Device) [ 3.771702] ACPI: Added _OSI(Processor Device) [ 3.772437] ACPI: Added _OSI(3.0 _SCP Extensions) [ 3.773320] ACPI: Added _OSI(Processor Aggregator Device) [ 3.800553] ACPI: Executed 2 blocks of module-level executable AML code [ 4.697960] ACPI: Interpreter enabled [ 4.698899] ACPI: (supports S0 S3 S4 S5) [ 4.699453] ACPI: Using IOAPIC for interrupt routing [ 4.700639] PCI: Using host bridge windows from ACPI; if necessary, use "pci=nocrs" and report a bug