INIT: Id "1" respawning too fast: disabled for 5 minutes INIT: Id "4" respawning too fast: disabled for 5 minutes INIT: Id "6" respawning too fast: disabled for 5 minutes INIT: Id "5" respawning too fast: disabled for 5 minutes INIT: Id "2" respawning too fast: disabled for 5 minutes Warning: Permanently added '10.128.15.219' (ECDSA) to the list of known hosts. executing program [ 362.241106] INFO: task syzkaller339629:3850 blocked for more than 120 seconds. [ 362.248617] Not tainted 4.4.118-g5f7f76a #25 [ 362.254088] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 362.262059] syzkaller339629 D ffff8800ba647a60 28808 3850 3847 0x20020004 [ 362.269496] ffff8800ba647a60 0000000000000006 ffff8800bb043000 ffffffff8113bd3a [ 362.277486] ffffed00388c0180 ffff8801c4600c00 ffff8801db21fdb8 ffff8801db21fde0 [ 362.285477] ffff8801db21f4d8 ffffffff84217840 ffff8800bb043000 0000000000000000 [ 362.293480] Call Trace: [ 362.296113] [] ? __local_bh_enable_ip+0x6a/0xd0 [ 362.302464] [] schedule+0x7a/0x1b0 [ 362.307648] [] __lock_sock+0xf1/0x180 [ 362.313092] [] ? sock_init_data+0xcc0/0xcc0 [ 362.319035] [] ? lock_sock_nested+0x43/0x120 [ 362.325112] [] ? prepare_to_wait_event+0x420/0x420 [ 362.331688] [] ? get_parent_ip+0xd/0x50 [ 362.337282] [] lock_sock_nested+0xf6/0x120 [ 362.343187] [] ipv6_getorigdst+0x136/0x610 [ 362.349042] [] ? ipv6_print_tuple+0x30/0x30 [ 362.355009] [] ? __ww_mutex_lock_interruptible+0x14d0/0x14d0 [ 362.362447] [] ? mutex_unlock+0x9/0x10 [ 362.367980] [] ? nf_sockopt_find.constprop.0+0x1a7/0x220 [ 362.375080] [] compat_nf_getsockopt+0xfd/0x130 [ 362.381318] [] compat_ipv6_getsockopt+0x1fa/0x2f0 [ 362.387783] [] ? ipv6_getsockopt+0x250/0x250 [ 362.393861] [] inet_csk_compat_getsockopt+0x95/0x120 [ 362.400585] [] ? ipv6_getsockopt+0x250/0x250 [ 362.406638] [] compat_tcp_getsockopt+0x3d/0x70 [ 362.412860] [] compat_sock_common_getsockopt+0xb2/0x140 [ 362.419844] [] ? tcp_getsockopt+0xd0/0xd0 [ 362.425653] [] compat_SyS_getsockopt+0x14f/0x2a0 [ 362.432047] [] ? sock_common_getsockopt+0xd0/0xd0 [ 362.438524] [] ? compat_SyS_setsockopt+0x290/0x290 [ 362.445122] [] ? vmacache_update+0xfe/0x130 [ 362.451089] [] ? do_fast_syscall_32+0xd7/0x8a0 [ 362.457293] [] ? compat_SyS_setsockopt+0x290/0x290 [ 362.463870] [] do_fast_syscall_32+0x321/0x8a0 [ 362.469997] [] sysenter_flags_fixed+0xd/0x17 [ 362.476132] 1 lock held by syzkaller339629/3850: [ 362.480855] #0: (sk_lock-AF_INET6){+.+...}, at: [] compat_ipv6_getsockopt+0x1df/0x2f0 [ 362.491148] Sending NMI to all CPUs: [ 362.495087] NMI backtrace for cpu 0 [ 362.498681] CPU: 0 PID: 486 Comm: khungtaskd Not tainted 4.4.118-g5f7f76a #25 [ 362.505949] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 362.515286] task: ffff8800bb2b6000 task.stack: ffff8800bac58000 [ 362.521326] RIP: 0010:[] [] flat_send_IPI_mask+0xf7/0x1a0 [ 362.530043] RSP: 0018:ffff8800bac5fcb8 EFLAGS: 00000046 [ 362.535481] RAX: 0000000003000000 RBX: 0000000000000c00 RCX: 0000000000000000 [ 362.542732] RDX: 0000000000000c00 RSI: 0000000000000000 RDI: ffffffffff5fb300 [ 362.549970] RBP: ffff8800bac5fce0 R08: 0000000000000001 R09: 0000000000000000 [ 362.557235] R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000246 [ 362.564485] R13: 0000000000000003 R14: ffffffff8426f420 R15: 0000000000000002 [ 362.571757] FS: 0000000000000000(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 362.579952] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 362.585837] CR2: 0000000020b55000 CR3: 00000000ac646000 CR4: 0000000000160670 [ 362.593093] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 362.600333] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 362.607589] Stack: [ 362.609707] ffffffff8426f420 ffffffff847ef9c0 fffffbfff08fd9ec dffffc0000000000 [ 362.617231] ffff8801db31bca0 ffff8800bac5fd00 ffffffff810b999b ffffffff839f63c0 [ 362.624745] 0000000000000003 ffff8800bac5fd60 ffffffff81d0ef94 ffffffff8141b013 [ 362.632270] Call Trace: [ 362.634825] [] nmi_raise_cpu_backtrace+0x5b/0x70 [ 362.641216] [] nmi_trigger_all_cpu_backtrace+0x4a4/0x550 [ 362.648292] [] ? print_lock+0xab/0xae [ 362.653738] [] ? irq_force_complete_move+0x3b0/0x3b0 [ 362.660459] [] arch_trigger_all_cpu_backtrace+0x14/0x20 [ 362.667468] [] watchdog+0x6fa/0xae0 [ 362.672727] [] ? watchdog+0xc3/0xae0 [ 362.678058] [] kthread+0x268/0x300 [ 362.683245] [] ? reset_hung_task_detector+0x20/0x20 [ 362.689878] [] ? kthread_create_on_node+0x400/0x400 [ 362.696540] [] ? kthread_create_on_node+0x400/0x400 [ 362.703193] [] ret_from_fork+0x55/0x80 [ 362.708698] [] ? kthread_create_on_node+0x400/0x400 [ 362.715416] Code: b3 5f ff f6 c4 10 75 e1 44 89 e8 c1 e0 18 89 04 25 10 b3 5f ff 44 89 fa 09 da 80 cf 04 41 83 ff 02 0f 44 d3 89 14 25 00 b3 5f ff <41> f7 c4 00 02 00 00 74 1a e8 6b 2f 17 00 4c 89 e7 57 9d 0f 1f [ 362.734404] NMI backtrace for cpu 1 [ 362.738002] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.4.118-g5f7f76a #25 [ 362.745017] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 362.754381] task: ffff8801d9b49800 task.stack: ffff8801d9b58000 [ 362.760423] RIP: 0010:[] [] native_safe_halt+0x6/0x10 [ 362.768820] RSP: 0018:ffff8801d9b5fd98 EFLAGS: 00000246 [ 362.774254] RAX: 0000000000000007 RBX: ffffffff847ddac8 RCX: 0000000000000000 [ 362.781530] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8801d9b4a0cc [ 362.788772] RBP: ffff8801d9b5fd98 R08: 0000000000000000 R09: 0000000000000000 [ 362.796043] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001 [ 362.803306] R13: fffffbfff070889c R14: ffffffff847ebe38 R15: 0000000000000000 [ 362.810547] FS: 0000000000000000(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 362.818788] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 362.824666] CR2: 00000000f772fdb0 CR3: 00000000ac646000 CR4: 0000000000160670 [ 362.831958] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 362.839202] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 362.846476] Stack: [ 362.848593] ffff8801d9b5fdd0 ffffffff81027e85 ffff8801d9b60000 ffffffff847ddac8 [ 362.856135] fffffbfff070889c ffffffff847ebe38 0000000000000000 ffff8801d9b5fde0 [ 362.863653] ffffffff810293fa ffff8801d9b5fdf8 ffffffff81221468 dffffc0000000000 [ 362.871178] Call Trace: [ 362.873730] [] default_idle+0x55/0x3c0 [ 362.879232] [] arch_cpu_idle+0xa/0x10 [ 362.884675] [] default_idle_call+0x48/0x70 [ 362.890526] [] cpu_startup_entry+0x5fd/0x8f0 [ 362.896579] [] ? call_cpuidle+0xe0/0xe0 [ 362.902193] [] ? clockevents_register_device+0x122/0x230 [ 362.909271] [] start_secondary+0x304/0x3e0 [ 362.915140] [] ? set_cpu_sibling_map+0x1080/0x1080 [ 362.921707] Code: 00 00 00 00 00 55 48 89 e5 fa 5d c3 66 0f 1f 84 00 00 00 00 00 55 48 89 e5 fb 5d c3 66 0f 1f 84 00 00 00 00 00 55 48 89 e5 fb f4 <5d> c3 0f 1f 84 00 00 00 00 00 55 48 89 e5 f4 5d c3 66 0f 1f 84 [ 362.940871] Kernel panic - not syncing: hung_task: blocked tasks [ 362.947004] CPU: 0 PID: 486 Comm: khungtaskd Not tainted 4.4.118-g5f7f76a #25 [ 362.954253] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 362.963576] 0000000000000000 0d4c1880c0e5dc26 ffff8800bac5fca8 ffffffff81d0402d [ 362.971547] ffffffff83883080 ffff8800bac5fd80 dffffc0000000000 7fffffffffffffff [ 362.979509] ffff8800ba9c1c48 ffff8800bac5fd70 ffffffff8141aaea 0000000041b58ab3 [ 362.987470] Call Trace: [ 362.990074] [] dump_stack+0xc1/0x124 [ 362.995410] [] panic+0x1aa/0x388 [ 363.000395] [] ? percpu_up_read.constprop.45+0xe1/0xe1 [ 363.007287] [] ? nmi_trigger_all_cpu_backtrace+0x3f8/0x550 [ 363.014537] [] ? nmi_trigger_all_cpu_backtrace+0x3f8/0x550 [ 363.021781] [] watchdog+0x70b/0xae0 [ 363.027032] [] ? watchdog+0xc3/0xae0 [ 363.032376] [] kthread+0x268/0x300 [ 363.037533] [] ? reset_hung_task_detector+0x20/0x20 [ 363.044166] [] ? kthread_create_on_node+0x400/0x400 [ 363.050798] [] ? kthread_create_on_node+0x400/0x400 [ 363.057441] [] ret_from_fork+0x55/0x80 [ 363.062948] [] ? kthread_create_on_node+0x400/0x400 [ 363.069995] Dumping ftrace buffer: [ 363.073540] (ftrace buffer empty) [ 363.077222] Kernel Offset: disabled [ 363.080827] Rebooting in 86400 seconds..