INIT: Id "1" 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 INIT: Id "4" respawning too fast: disabled for 5 minutes INIT: Id "6" respawning too fast: disabled for 5 minutes Warning: Permanently added '10.128.10.36' (ECDSA) to the list of known hosts. executing program executing program executing program INIT: Id "6" respawning too fast: disabled for 5 minutes INIT: Id "5" respawning too fast: disabled for 5 minutes INIT: Id "1" 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 "3" respawning too fast: disabled for 5 minutes [ 613.621335] INFO: task syz-executor778:3896 blocked for more than 120 seconds. [ 613.628738] Not tainted 4.9.107-gdb2c520 #49 [ 613.634353] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 613.642520] syz-executor778 D27176 3896 3894 0x00000000 [ 613.648283] ffff8801d8688000 0000000000000000 ffff8801d7098fc0 ffff8801d9a6b000 [ 613.656645] ffff8801db321c18 ffff8801d55179f0 ffffffff839e8c1d 0000000000000002 [ 613.664815] 0000000041b58ab3 ffffffff843b9ea3 00ffffff81221500 ffff8801db3224e8 [ 613.672869] Call Trace: [ 613.675449] [] ? __schedule+0x64d/0x1bd0 [ 613.681251] [] schedule+0x7f/0x1b0 [ 613.686449] [] blk_mq_freeze_queue_wait+0x114/0x230 [ 613.693169] [] ? plug_ctx_cmp+0x100/0x100 [ 613.698960] [] ? prepare_to_wait_event+0x450/0x450 [ 613.705580] [] blk_mq_freeze_queue+0x1d/0x20 [ 613.711648] [] lo_ioctl+0x722/0x1aa0 [ 613.717006] [] ? loop_lookup.part.19+0x110/0x110 [ 613.723466] [] blkdev_ioctl+0x7b6/0x1a70 [ 613.729167] [] ? blkpg_ioctl+0x920/0x920 [ 613.734943] [] ? do_readv_writev+0x1fe/0x7a0 [ 613.740990] [] ? vfs_write+0x530/0x530 [ 613.746702] [] block_ioctl+0xde/0x120 [ 613.752185] [] ? blkdev_fallocate+0x440/0x440 [ 613.758314] [] do_vfs_ioctl+0x1ac/0x11a0 [ 613.764412] [] ? ioctl_preallocate+0x220/0x220 [ 613.770641] [] ? _raw_spin_unlock_irqrestore+0x45/0x70 [ 613.777630] [] ? selinux_capable+0x40/0x40 [ 613.783552] [] ? vfs_writev+0x8f/0xc0 [ 613.789000] [] ? do_pwritev+0x13e/0x240 [ 613.794724] [] ? security_file_ioctl+0x8f/0xc0 [ 613.800950] [] SyS_ioctl+0x8f/0xc0 [ 613.806191] [] ? do_vfs_ioctl+0x11a0/0x11a0 [ 613.812261] [] do_syscall_64+0x1a6/0x490 [ 613.817962] [] entry_SYSCALL_64_after_swapgs+0x5d/0xdb [ 613.824925] [ 613.824925] Showing all locks held in the system: [ 613.831277] 2 locks held by khungtaskd/519: [ 613.835571] #0: (rcu_read_lock){......}, at: [] watchdog+0x11c/0xa20 [ 613.844301] #1: (tasklist_lock){.+.+..}, at: [] debug_show_all_locks+0x79/0x218 [ 613.854003] 1 lock held by rsyslogd/3676: [ 613.858122] #0: (&f->f_pos_lock){+.+.+.}, at: [] __fdget_pos+0xac/0xd0 [ 613.867011] 2 locks held by getty/3772: [ 613.870966] #0: (&tty->ldisc_sem){++++++}, at: [] ldsem_down_read+0x32/0x40 [ 613.881669] #1: (&ldata->atomic_read_lock){+.+...}, at: [] n_tty_read+0x202/0x16e0 [ 613.891715] 1 lock held by syz-executor778/3896: [ 613.896454] #0: (&lo->lo_ctl_mutex/1){+.+.+.}, at: [] lo_ioctl+0x8b/0x1aa0 [ 613.905826] [ 613.907443] ============================================= [ 613.907443] [ 613.914840] NMI backtrace for cpu 0 [ 613.918447] CPU: 0 PID: 519 Comm: khungtaskd Not tainted 4.9.107-gdb2c520 #49 [ 613.925691] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 613.935020] ffff8801d842fd08 ffffffff81eb3da9 0000000000000000 0000000000000000 [ 613.943944] 0000000000000000 0000000000000001 ffffffff810b96a0 ffff8801d842fd40 [ 613.952737] ffffffff81ebf0a7 0000000000000000 0000000000000000 0000000000000003 [ 613.960867] Call Trace: [ 613.963445] [] dump_stack+0xc1/0x128 [ 613.968824] [] ? irq_force_complete_move+0x320/0x320 [ 613.975636] [] nmi_cpu_backtrace.cold.2+0x48/0x87 [ 613.982148] [] ? irq_force_complete_move+0x320/0x320 [ 613.989436] [] nmi_trigger_cpumask_backtrace+0x12a/0x14f [ 613.996541] [] arch_trigger_cpumask_backtrace+0x14/0x20 [ 614.003560] [] watchdog+0x6b4/0xa20 [ 614.008909] [] ? watchdog+0x11c/0xa20 [ 614.014368] [] kthread+0x26d/0x300 [ 614.019566] [] ? reset_hung_task_detector+0x20/0x20 [ 614.026233] [] ? kthread_park+0xa0/0xa0 [ 614.031855] [] ? kthread_park+0xa0/0xa0 [ 614.037480] [] ? kthread_park+0xa0/0xa0 [ 614.043098] [] ret_from_fork+0x5c/0x70 [ 614.048771] Sending NMI from CPU 0 to CPUs 1: [ 614.053682] NMI backtrace for cpu 1 skipped: idling at pc 0xffffffff839f8726 [ 614.064076] Kernel panic - not syncing: hung_task: blocked tasks [ 614.074381] CPU: 1 PID: 519 Comm: khungtaskd Not tainted 4.9.107-gdb2c520 #49 [ 614.081774] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 614.091144] ffff8801d842fcc8 ffffffff81eb3da9 ffffffff83c8bdc0 00000000ffffffff [ 614.099180] 0000000000000000 0000000000000001 dffffc0000000000 ffff8801d842fd88 [ 614.107205] ffffffff81421925 0000000041b58ab3 ffffffff843b9b48 ffffffff81421766 [ 614.115207] Call Trace: [ 614.117784] [] dump_stack+0xc1/0x128 [ 614.123145] [] panic+0x1bf/0x3bc [ 614.128161] [] ? add_taint.cold.6+0x16/0x16 [ 614.134136] [] ? ___preempt_schedule+0x16/0x18 [ 614.140370] [] ? nmi_trigger_cpumask_backtrace+0x100/0x14f [ 614.147658] [] watchdog+0x6c5/0xa20 [ 614.152946] [] ? watchdog+0x11c/0xa20 [ 614.158402] [] kthread+0x26d/0x300 [ 614.163605] [] ? reset_hung_task_detector+0x20/0x20 [ 614.170273] [] ? kthread_park+0xa0/0xa0 [ 614.175900] [] ? kthread_park+0xa0/0xa0 [ 614.181521] [] ? kthread_park+0xa0/0xa0 [ 614.187155] [] ret_from_fork+0x5c/0x70 [ 614.193480] Dumping ftrace buffer: [ 614.197012] (ftrace buffer empty) [ 614.200692] Kernel Offset: disabled [ 614.204296] Rebooting in 86400 seconds..