INIT: Entering runlevel: 2 [info] Using makefile-style concurrent boot in runlevel 2. [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.58' (ECDSA) to the list of known hosts. net.ipv6.conf.syz_tun.accept_dad = 0 net.ipv6.conf.syz_tun.router_solicitations = 0 RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported syzkaller login: [ 47.799335] ip (3599) used greatest stack depth: 54408 bytes left [ 47.918357] bridge0: port 1(bridge_slave_0) entered blocking state [ 47.924811] bridge0: port 1(bridge_slave_0) entered disabled state [ 47.932101] device bridge_slave_0 entered promiscuous mode [ 47.953222] bridge0: port 2(bridge_slave_1) entered blocking state [ 47.959682] bridge0: port 2(bridge_slave_1) entered disabled state [ 47.966823] device bridge_slave_1 entered promiscuous mode [ 47.987283] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 48.007911] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready Error: argument "bond0" is wrong: Device does not exist Error: argument "bond0" is wrong: Device does not exist [ 48.112359] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 48.133211] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready Error: argument "team0" is wrong: Device does not exist Error: argument "team0" is wrong: Device does not exist [ 48.235100] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 48.255463] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 48.276914] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 48.300320] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready RTNETLINK answers: Operation not supported Cannot find device "vcan0" [ 48.471950] bridge0: port 2(bridge_slave_1) entered blocking state [ 48.478718] bridge0: port 2(bridge_slave_1) entered forwarding state [ 48.485464] bridge0: port 1(bridge_slave_0) entered blocking state [ 48.491882] bridge0: port 1(bridge_slave_0) entered forwarding state Cannot find device "vcan0" Cannot find device "vcan0" Cannot find device "vcan0" Cannot find device "tunl0" Cannot find device "tunl0" Cannot find device "tunl0" Cannot find device "tunl0" Cannot find device "gre0" Cannot find device "gre0" Cannot find device "gre0" Cannot find device "gre0" Cannot find device "gretap0" Cannot find device "gretap0" Cannot find device "gretap0" Cannot find device "gretap0" Cannot find device "ip_vti0" Cannot find device "ip_vti0" Cannot find device "ip_vti0" Cannot find device "ip_vti0" Cannot find device "ip6_vti0" Cannot find device "ip6_vti0" Cannot find device "ip6_vti0" Cannot find device "ip6_vti0" Cannot find device "ip6tnl0" Cannot find device "ip6tnl0" Cannot find device "ip6tnl0" Cannot find device "ip6tnl0" Cannot find device "ip6gre0" Cannot find device "ip6gre0" Cannot find device "ip6gre0" Cannot find device "ip6gre0" Cannot find device "ip6gretap0" Cannot find device "ip6gretap0" Cannot find device "ip6gretap0" Cannot find device "ip6gretap0" Cannot find device "erspan0" Cannot find device "erspan0" Cannot find device "erspan0" Cannot find device "erspan0" Cannot find device "bond0" Cannot find device "bond0" Cannot find device "bond0" Cannot find device "bond0" [ 49.696527] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready Cannot find device "team0" [ 49.758696] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 49.764985] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 49.772876] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready Cannot find device "team0" Cannot find device "team0" Cannot find device "team0" executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 53.280117] ================================================================== [ 53.287549] BUG: KMSAN: uninit-value in ipv6_skip_exthdr+0x796/0x900 [ 53.294169] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.16.0+ #83 [ 53.300467] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 53.309812] Call Trace: [ 53.312497] [ 53.314643] dump_stack+0x185/0x1d0 [ 53.318257] ? ipv6_skip_exthdr+0x796/0x900 [ 53.322559] kmsan_report+0x142/0x240 [ 53.326340] __msan_warning_32+0x6c/0xb0 [ 53.330382] ipv6_skip_exthdr+0x796/0x900 [ 53.334513] icmp6_send+0xec1/0x3460 [ 53.338209] ? default_send_IPI_single+0xaf/0xd0 [ 53.342954] ? native_apic_mem_read+0x60/0x60 [ 53.347432] ? default_send_IPI_mask_allbutself_phys+0x410/0x410 [ 53.353556] ? native_smp_send_reschedule+0xd5/0x160 [ 53.358645] ? native_stop_other_cpus+0x5e0/0x5e0 [ 53.363492] ? ndisc_error_report+0x40/0x1a0 [ 53.367886] ? icmpv6_param_prob+0xc0/0xc0 [ 53.372102] icmpv6_send+0xe0/0x110 [ 53.375713] ? ndisc_error_report+0x101/0x1a0 [ 53.380201] ip6_link_failure+0x8f/0x580 [ 53.384256] ? ip6_negative_advice+0x350/0x350 [ 53.388821] ndisc_error_report+0x101/0x1a0 [ 53.393124] ? ndisc_solicit+0x5c0/0x5c0 [ 53.397164] neigh_invalidate+0x385/0x930 [ 53.401294] neigh_timer_handler+0xd85/0x12d0 [ 53.405785] call_timer_fn+0x26a/0x5a0 [ 53.409666] ? neigh_blackhole+0x60/0x60 [ 53.413719] __run_timers+0xda7/0x11c0 [ 53.417692] ? neigh_blackhole+0x60/0x60 [ 53.421745] ? irq_exit+0x202/0x240 [ 53.425364] ? run_timer_softirq+0x14/0x70 [ 53.429582] ? timers_dead_cpu+0x1010/0x1010 [ 53.433966] run_timer_softirq+0x43/0x70 [ 53.438021] __do_softirq+0x56d/0x93d [ 53.441814] irq_exit+0x202/0x240 [ 53.445254] exiting_irq+0xe/0x10 [ 53.448778] smp_apic_timer_interrupt+0x64/0x90 [ 53.453436] apic_timer_interrupt+0xf/0x20 [ 53.457645] [ 53.459865] RIP: 0010:default_idle+0x1fb/0x3c0 [ 53.464431] RSP: 0018:ffffffff87c0fd88 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff12 [ 53.472122] RAX: ffff880203eb5440 RBX: 0000000000000000 RCX: ffff880000000000 [ 53.479370] RDX: ffff880203ab5440 RSI: aaaaaaaaaaaab000 RDI: ffffea0000000000 [ 53.486618] RBP: ffffffff87c0fdc0 R08: 0000000001080020 R09: 0000000000000002 [ 53.493866] R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000 [ 53.501119] R13: ffffffff87c1eb00 R14: ffffffff87c0fe24 R15: ffffffff87c1f418 [ 53.508501] ? default_idle+0x6b/0x3c0 [ 53.512498] ? __sched_text_end+0x1/0x1 [ 53.516460] arch_cpu_idle+0x20/0x30 [ 53.520174] do_idle+0x349/0x790 [ 53.523545] cpu_startup_entry+0x45/0x50 [ 53.527591] rest_init+0x1c1/0x1f0 [ 53.531111] ? hpet_time_init+0x20/0xe0 [ 53.535067] start_kernel+0xf93/0xfb0 [ 53.538848] x86_64_start_kernel+0x2fa/0x310 [ 53.543242] secondary_startup_64+0xa5/0xb0 [ 53.547540] [ 53.549142] Uninit was stored to memory at: [ 53.553448] kmsan_internal_chain_origin+0x12b/0x210 [ 53.558540] kmsan_memcpy_origins+0x11d/0x170 [ 53.563038] __msan_memcpy+0x19f/0x1f0 [ 53.566912] skb_copy_bits+0x63a/0xdb0 [ 53.570781] ipv6_skip_exthdr+0x472/0x900 [ 53.574930] icmp6_send+0xec1/0x3460 [ 53.578624] icmpv6_send+0xe0/0x110 [ 53.582237] ip6_link_failure+0x8f/0x580 [ 53.586292] ndisc_error_report+0x101/0x1a0 [ 53.590606] neigh_invalidate+0x385/0x930 [ 53.594744] neigh_timer_handler+0xd85/0x12d0 [ 53.599221] call_timer_fn+0x26a/0x5a0 [ 53.603085] __run_timers+0xda7/0x11c0 [ 53.606949] run_timer_softirq+0x43/0x70 [ 53.610988] __do_softirq+0x56d/0x93d [ 53.614766] Uninit was created at: [ 53.618286] kmsan_alloc_meta_for_pages+0x161/0x3a0 [ 53.623278] kmsan_alloc_page+0x82/0xe0 [ 53.627231] __alloc_pages_nodemask+0xf5b/0x5dc0 [ 53.631964] alloc_pages_current+0x6b5/0x970 [ 53.636350] skb_page_frag_refill+0x3ba/0x5e0 [ 53.640829] sk_page_frag_refill+0xa4/0x340 [ 53.645139] __ip6_append_data+0x1a20/0x4bb0 [ 53.649527] ip6_append_data+0x40e/0x6b0 [ 53.653660] rawv6_sendmsg+0x2787/0x4cc0 [ 53.657701] inet_sendmsg+0x48d/0x740 [ 53.661484] sock_write_iter+0x3b9/0x470 [ 53.665525] __vfs_write+0x719/0x910 [ 53.669225] vfs_write+0x463/0x8d0 [ 53.672741] SYSC_write+0x172/0x360 [ 53.676348] SyS_write+0x55/0x80 [ 53.679691] do_syscall_64+0x309/0x430 [ 53.683560] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 53.688723] ================================================================== [ 53.696060] Disabling lock debugging due to kernel taint [ 53.701496] Kernel panic - not syncing: panic_on_warn set ... [ 53.701496] [ 53.708837] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G B 4.16.0+ #83 [ 53.716348] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 53.725681] Call Trace: [ 53.728258] [ 53.730401] dump_stack+0x185/0x1d0 [ 53.734020] panic+0x39d/0x940 [ 53.737213] ? ipv6_skip_exthdr+0x796/0x900 [ 53.741514] kmsan_report+0x238/0x240 [ 53.745302] __msan_warning_32+0x6c/0xb0 [ 53.749353] ipv6_skip_exthdr+0x796/0x900 [ 53.754384] icmp6_send+0xec1/0x3460 [ 53.758084] ? default_send_IPI_single+0xaf/0xd0 [ 53.762817] ? native_apic_mem_read+0x60/0x60 [ 53.767294] ? default_send_IPI_mask_allbutself_phys+0x410/0x410 [ 53.773421] ? native_smp_send_reschedule+0xd5/0x160 [ 53.778503] ? native_stop_other_cpus+0x5e0/0x5e0 [ 53.783335] ? ndisc_error_report+0x40/0x1a0 [ 53.787727] ? icmpv6_param_prob+0xc0/0xc0 [ 53.791951] icmpv6_send+0xe0/0x110 [ 53.795582] ? ndisc_error_report+0x101/0x1a0 [ 53.800066] ip6_link_failure+0x8f/0x580 [ 53.804124] ? ip6_negative_advice+0x350/0x350 [ 53.808697] ndisc_error_report+0x101/0x1a0 [ 53.813001] ? ndisc_solicit+0x5c0/0x5c0 [ 53.817060] neigh_invalidate+0x385/0x930 [ 53.821195] neigh_timer_handler+0xd85/0x12d0 [ 53.825672] call_timer_fn+0x26a/0x5a0 [ 53.829546] ? neigh_blackhole+0x60/0x60 [ 53.833591] __run_timers+0xda7/0x11c0 [ 53.837458] ? neigh_blackhole+0x60/0x60 [ 53.841507] ? irq_exit+0x202/0x240 [ 53.845114] ? run_timer_softirq+0x14/0x70 [ 53.849336] ? timers_dead_cpu+0x1010/0x1010 [ 53.853721] run_timer_softirq+0x43/0x70 [ 53.857772] __do_softirq+0x56d/0x93d [ 53.861554] irq_exit+0x202/0x240 [ 53.864986] exiting_irq+0xe/0x10 [ 53.868432] smp_apic_timer_interrupt+0x64/0x90 [ 53.873080] apic_timer_interrupt+0xf/0x20 [ 53.877287] [ 53.879510] RIP: 0010:default_idle+0x1fb/0x3c0 [ 53.884070] RSP: 0018:ffffffff87c0fd88 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff12 [ 53.891765] RAX: ffff880203eb5440 RBX: 0000000000000000 RCX: ffff880000000000 [ 53.899022] RDX: ffff880203ab5440 RSI: aaaaaaaaaaaab000 RDI: ffffea0000000000 [ 53.906289] RBP: ffffffff87c0fdc0 R08: 0000000001080020 R09: 0000000000000002 [ 53.913542] R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000 [ 53.920794] R13: ffffffff87c1eb00 R14: ffffffff87c0fe24 R15: ffffffff87c1f418 [ 53.928073] ? default_idle+0x6b/0x3c0 [ 53.931952] ? __sched_text_end+0x1/0x1 [ 53.936006] arch_cpu_idle+0x20/0x30 [ 53.939723] do_idle+0x349/0x790 [ 53.943072] cpu_startup_entry+0x45/0x50 [ 53.947115] rest_init+0x1c1/0x1f0 [ 53.950636] ? hpet_time_init+0x20/0xe0 [ 53.954587] start_kernel+0xf93/0xfb0 [ 53.958376] x86_64_start_kernel+0x2fa/0x310 [ 53.962767] secondary_startup_64+0xa5/0xb0 [ 53.967658] Dumping ftrace buffer: [ 53.971193] (ftrace buffer empty) [ 53.974878] Kernel Offset: disabled [ 53.978483] Rebooting in 86400 seconds..