INIT: Id "1" respawning too fast: disabled for 5 minutes INIT: Id "4" 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 '10.128.10.41' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program INIT: Id "5" 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 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 [ 613.724977] INFO: task kworker/u4:3:1699 blocked for more than 120 seconds. [ 613.732245] Not tainted 4.9.109-g7cecc75 #2 [ 613.737620] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 613.745825] kworker/u4:3 D28424 1699 2 0x00000000 [ 613.751716] Workqueue: events_unbound flush_to_ldisc [ 613.757821] ffff8801cf579800 0000000000000000 ffff8801cd622f40 ffffffff84629800 [ 613.766132] ffff8801db221c18 ffff8801cf7a7908 ffffffff839e8a3d ffff8801cf57a0c8 [ 613.774168] ffffed0039eaf418 ffff8801cf579800 00fffc0000000000 ffff8801db2224e8 [ 613.782524] Call Trace: [ 613.786137] [] ? __schedule+0x64d/0x1bd0 [ 613.791841] [] schedule+0x7f/0x1b0 [ 613.797319] [] schedule_preempt_disabled+0x13/0x20 [ 613.803913] [] mutex_lock_nested+0x326/0x870 [ 613.810269] [] ? n_tty_receive_buf_common+0xcfd/0x2300 [ 613.817477] [] ? mutex_trylock+0x3e0/0x3e0 [ 613.823362] [] n_tty_receive_buf_common+0xcfd/0x2300 [ 613.830547] [] ? mark_held_locks+0xc7/0x130 [ 613.836855] [] ? trace_hardirqs_on_caller+0x2a0/0x590 [ 613.843782] [] n_tty_receive_buf2+0x33/0x40 [ 613.850058] [] tty_ldisc_receive_buf+0xaf/0x190 [ 613.856755] [] ? n_tty_receive_buf_common+0x2300/0x2300 [ 613.863772] [] flush_to_ldisc+0x253/0x370 [ 613.869879] [] ? __lock_is_held+0xa2/0xf0 [ 613.876020] [] process_one_work+0x7e1/0x1500 [ 613.882163] [] ? process_one_work+0x728/0x1500 [ 613.889249] [] ? pwq_dec_nr_in_flight+0x2e0/0x2e0 [ 613.896006] [] worker_thread+0xd6/0x10a0 [ 613.901715] [] kthread+0x26d/0x300 [ 613.907167] [] ? process_one_work+0x1500/0x1500 [ 613.913479] [] ? kthread_park+0xa0/0xa0 [ 613.919425] [] ? kthread_park+0xa0/0xa0 [ 613.925318] [] ? kthread_park+0xa0/0xa0 [ 613.930946] [] ret_from_fork+0x5c/0x70 [ 613.936772] [ 613.936772] Showing all locks held in the system: [ 613.943255] 2 locks held by khungtaskd/519: [ 613.947593] #0: (rcu_read_lock){......}, at: [] watchdog+0x11c/0xa20 [ 613.956433] #1: (tasklist_lock){.+.+..}, at: [] debug_show_all_locks+0x79/0x218 [ 613.966184] 6 locks held by kworker/u4:3/1699: [ 613.970748] #0: ("events_unbound"){.+.+.+}, at: [] process_one_work+0x6ee/0x1500 [ 613.980559] #1: ((&buf->work)){+.+...}, at: [] process_one_work+0x728/0x1500 [ 613.990037] #2: (&tty->ldisc_sem){++++++}, at: [] tty_ldisc_ref+0x20/0x80 [ 613.999234] #3: (&port->buf.lock/1){+.+...}, at: [] flush_to_ldisc+0x86/0x370 [ 614.008893] #4: (&o_tty->termios_rwsem/1){++++..}, at: [] n_tty_receive_buf_common+0x8b/0x2300 [ 614.020037] #5: (&ldata->output_lock){+.+...}, at: [] n_tty_receive_buf_common+0xcfd/0x2300 [ 614.030843] 2 locks held by getty/3771: [ 614.035446] #0: (&tty->ldisc_sem){++++++}, at: [] ldsem_down_read+0x32/0x40 [ 614.044791] #1: (&ldata->atomic_read_lock){+.+...}, at: [] n_tty_read+0x202/0x16e0 [ 614.054864] [ 614.056475] ============================================= [ 614.056475] [ 614.064584] NMI backtrace for cpu 0 [ 614.068236] CPU: 0 PID: 519 Comm: khungtaskd Not tainted 4.9.109-g7cecc75 #2 [ 614.075412] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 614.084756] ffff8801d8f7fd08 ffffffff81eb3e29 0000000000000000 0000000000000000 [ 614.092957] 0000000000000000 0000000000000001 ffffffff810b9580 ffff8801d8f7fd40 [ 614.101765] ffffffff81ebf127 0000000000000000 0000000000000000 0000000000000002 [ 614.109792] Call Trace: [ 614.112406] [] dump_stack+0xc1/0x128 [ 614.117829] [] ? irq_force_complete_move+0x320/0x320 [ 614.124574] [] nmi_cpu_backtrace.cold.2+0x48/0x87 [ 614.131228] [] ? irq_force_complete_move+0x320/0x320 [ 614.137992] [] nmi_trigger_cpumask_backtrace+0x12a/0x14f [ 614.145079] [] arch_trigger_cpumask_backtrace+0x14/0x20 [ 614.152080] [] watchdog+0x6b4/0xa20 [ 614.157442] [] ? watchdog+0x11c/0xa20 [ 614.162883] [] kthread+0x26d/0x300 [ 614.168674] [] ? reset_hung_task_detector+0x20/0x20 [ 614.175342] [] ? kthread_park+0xa0/0xa0 [ 614.180954] [] ? kthread_park+0xa0/0xa0 [ 614.186568] [] ? kthread_park+0xa0/0xa0 [ 614.192203] [] ret_from_fork+0x5c/0x70 [ 614.197820] Sending NMI from CPU 0 to CPUs 1: [ 614.202703] NMI backtrace for cpu 1 [ 614.206331] CPU: 1 PID: 5426 Comm: syz-executor908 Not tainted 4.9.109-g7cecc75 #2 [ 614.214014] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 614.223374] task: ffff8801cd25b000 task.stack: ffff8801cd168000 [ 614.229407] RIP: 0010:[] c [] __process_echoes+0x5f1/0x780 [ 614.238240] RSP: 0018:ffff8801cd16f980 EFLAGS: 00000202 [ 614.243665] RAX: 000000000000017a RBX: ffffc900018b1000 RCX: 0000000000000002 [ 614.250914] RDX: 0000000000000000 RSI: ffffffff8211bb8f RDI: ffffc900018b23da [ 614.258174] RBP: ffff8801cd16f9e8 R08: ffff8801cd25b938 R09: 0000000000000000 [ 614.265509] R10: 0000000000000000 R11: 0000000000000000 R12: 00000007a4ee117a [ 614.272779] R13: 0000000000003b4b R14: dffffc0000000000 R15: 00000007a4ee117a [ 614.280046] FS: 00007f4585fbe700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 614.288250] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 614.294111] CR2: 00007fca47846000 CR3: 00000001d8dc4000 CR4: 00000000001606f0 [ 614.301361] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 614.308612] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 614.316043] Stack: [ 614.318256] ffff8801cd16f9c0c 0000000000000000c ffffc900018b3278c ffffed0039a55f55c [ 614.326457] ffff8801cd2afaacc ffffc900018b1020c 0000000000000900c ffff8801cd2af700c [ 614.334751] ffffc900018b3300c ffffc900018b1000c dffffc0000000000c ffffc900018b1020c [ 614.342960] Call Trace: [ 614.345515] [] n_tty_receive_buf_common+0xd34/0x2300 [ 614.352344] [] n_tty_receive_buf+0x30/0x40 [ 614.358208] [] tty_ioctl+0xc8f/0x2270 [ 614.363632] [] ? no_tty+0xa0/0xa0 [ 614.368727] [] ? avc_ss_reset+0x100/0x110 [ 614.374500] [] ? __lock_acquire+0x654/0x4070 [ 614.380542] [] ? __might_sleep+0x95/0x1a0 [ 614.386344] [] ? no_tty+0xa0/0xa0 [ 614.391428] [] do_vfs_ioctl+0x1ac/0x11a0 [ 614.397111] [] ? ioctl_preallocate+0x220/0x220 [ 614.403318] [] ? selinux_capable+0x40/0x40 [ 614.409174] [] ? __fget+0x20a/0x3b0 [ 614.414427] [] ? __fget+0x231/0x3b0 [ 614.419678] [] ? __fget+0x47/0x3b0 [ 614.424849] [] ? security_file_ioctl+0x8f/0xc0 [ 614.431052] [] SyS_ioctl+0x8f/0xc0 [ 614.436484] [] ? do_vfs_ioctl+0x11a0/0x11a0 [ 614.442441] [] do_syscall_64+0x1a6/0x490 [ 614.448125] [] entry_SYSCALL_64_after_swapgs+0x5d/0xdb [ 614.455043] Code: ced cfb cff cff ce8 cb1 c2d c24 cff c4c c89 ce0 c25 cff c0f c00 c00 c48 c8d cbc c03 c60 c12 c00 c00 c48 c89 cfa c48 c89 cf9 c48 cc1 cea c03 c83 ce1 c07 c42 c0f cb6 c14 c32 c<38> cca c7f c08 c84 cd2 c0f c85 cb0 c00 c00 c00 c80 cbc c03 c60 c12 c00 c00 cff c4d c [ 614.485905] Kernel panic - not syncing: hung_task: blocked tasks [ 614.492074] CPU: 0 PID: 519 Comm: khungtaskd Not tainted 4.9.109-g7cecc75 #2 [ 614.499243] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 614.508585] ffff8801d8f7fcc8 ffffffff81eb3e29 ffffffff83c8bbe0 00000000ffffffff [ 614.516624] 0000000000000000 0000000000000000 dffffc0000000000 ffff8801d8f7fd88 [ 614.524672] ffffffff81421925 0000000041b58ab3 ffffffff843b9a00 ffffffff81421766 [ 614.532712] Call Trace: [ 614.535288] [] dump_stack+0xc1/0x128 [ 614.540639] [] panic+0x1bf/0x3bc [ 614.545653] [] ? add_taint.cold.6+0x16/0x16 [ 614.551789] [] ? ___preempt_schedule+0x16/0x18 [ 614.558099] [] ? nmi_trigger_cpumask_backtrace+0x100/0x14f [ 614.565362] [] watchdog+0x6c5/0xa20 [ 614.570709] [] ? watchdog+0x11c/0xa20 [ 614.576145] [] kthread+0x26d/0x300 [ 614.581509] [] ? reset_hung_task_detector+0x20/0x20 [ 614.588167] [] ? kthread_park+0xa0/0xa0 [ 614.593785] [] ? kthread_park+0xa0/0xa0 [ 614.599411] [] ? kthread_park+0xa0/0xa0 [ 614.605036] [] ret_from_fork+0x5c/0x70 [ 614.611239] Dumping ftrace buffer: [ 614.614810] (ftrace buffer empty) [ 614.618936] Kernel Offset: disabled [ 614.622545] Rebooting in 86400 seconds..