INIT: Id "2" respawning too fast: disabled for 5 minutes INIT: Id "4" respawning too fast: disabled for 5 minutes INIT: Id "5" respawning too fast: disabled for 5 minutes INIT: Id "3" respawning too fast: disabled for 5 minutes INIT: Id "1" respawning too fast: disabled for 5 minutes [ 462.978340] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.62' (ECDSA) to the list of known hosts. [ 468.479149] random: sshd: uninitialized urandom read (32 bytes read) executing program executing program INIT: [ 515.035874] random: crng init done Id "3" 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 "6" respawning too fast: disabled for 5 minutes [ 716.042177] INFO: task syz-executor533:3890 blocked for more than 140 seconds. [ 716.049584] Not tainted 4.9.112-g9e79039 #7 [ 716.054569] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 716.062792] syz-executor533 D27176 3890 3888 0x00000000 [ 716.068592] ffff8801c4cac800 0000000000000000 ffff8801d8b924c0 ffff8801d9a6b000 [ 716.076709] ffff8801db321c18 ffff8801c871f9f0 ffffffff839e907d 0000000000000002 [ 716.084767] 0000000041b58ab3 ffffffff843bb1d3 00ffffff81221570 ffff8801db3224e8 [ 716.092787] Call Trace: [ 716.095426] [] ? __schedule+0x64d/0x1bd0 [ 716.101112] [] schedule+0x7f/0x1b0 [ 716.106337] [] blk_mq_freeze_queue_wait+0x114/0x230 [ 716.112989] [] ? plug_ctx_cmp+0x100/0x100 [ 716.118780] [] ? prepare_to_wait_event+0x450/0x450 [ 716.125375] [] blk_mq_freeze_queue+0x1d/0x20 [ 716.131445] [] lo_ioctl+0x722/0x1aa0 [ 716.136833] [] ? save_stack+0xa9/0xd0 [ 716.142290] [] ? loop_lookup.part.19+0x110/0x110 [ 716.148701] [] blkdev_ioctl+0x7b6/0x1a70 [ 716.154409] [] ? blkpg_ioctl+0x920/0x920 [ 716.160099] [] ? _raw_spin_unlock_irqrestore+0x5a/0x70 [ 716.167021] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 716.173890] [] block_ioctl+0xde/0x120 [ 716.179317] [] ? blkdev_fallocate+0x440/0x440 [ 716.185479] [] do_vfs_ioctl+0x1ac/0x11a0 [ 716.191165] [] ? ioctl_preallocate+0x220/0x220 [ 716.197456] [] ? kmem_cache_free+0x294/0x310 [ 716.203551] [] ? selinux_capable+0x40/0x40 [ 716.209430] [] ? do_sys_open+0x224/0x5c0 [ 716.215147] [] ? filp_open+0x70/0x70 [ 716.220501] [] ? security_file_ioctl+0x8f/0xc0 [ 716.226748] [] SyS_ioctl+0x8f/0xc0 [ 716.231918] [] ? do_vfs_ioctl+0x11a0/0x11a0 [ 716.237919] [] do_syscall_64+0x1a6/0x490 [ 716.243668] [] entry_SYSCALL_64_after_swapgs+0x5d/0xdb [ 716.250575] [ 716.250575] Showing all locks held in the system: [ 716.256896] 2 locks held by khungtaskd/519: [ 716.261190] #0: (rcu_read_lock){......}, at: [] watchdog+0x11c/0xa20 [ 716.269961] #1: (tasklist_lock){.+.+..}, at: [] debug_show_all_locks+0x79/0x218 [ 716.279679] 1 lock held by rsyslogd/3681: [ 716.283817] #0: (&f->f_pos_lock){+.+.+.}, at: [] __fdget_pos+0xac/0xd0 [ 716.292733] 2 locks held by getty/3777: [ 716.296686] #0: (&tty->ldisc_sem){++++++}, at: [] ldsem_down_read+0x32/0x40 [ 716.306013] #1: (&ldata->atomic_read_lock){+.+.+.}, at: [] n_tty_read+0x202/0x16e0 [ 716.315968] 1 lock held by syz-executor533/3890: [ 716.320690] #0: (&lo->lo_ctl_mutex/1){+.+.+.}, at: [] lo_ioctl+0x8b/0x1aa0 [ 716.330054] [ 716.331650] ============================================= [ 716.331650] [ 716.338730] NMI backtrace for cpu 1 [ 716.342345] CPU: 1 PID: 519 Comm: khungtaskd Not tainted 4.9.112-g9e79039 #7 [ 716.349500] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 716.358827] ffff8801d8587d08 ffffffff81eb3249 0000000000000000 0000000000000001 [ 716.366814] 0000000000000001 0000000000000001 ffffffff810b9bd0 ffff8801d8587d40 [ 716.374803] ffffffff81ebe547 0000000000000001 0000000000000000 0000000000000002 [ 716.382793] Call Trace: [ 716.385403] [] dump_stack+0xc1/0x128 [ 716.390782] [] ? irq_force_complete_move+0x320/0x320 [ 716.397506] [] nmi_cpu_backtrace.cold.2+0x48/0x87 [ 716.403979] [] ? irq_force_complete_move+0x320/0x320 [ 716.410704] [] nmi_trigger_cpumask_backtrace+0x12a/0x14f [ 716.417775] [] arch_trigger_cpumask_backtrace+0x14/0x20 [ 716.424761] [] watchdog+0x6b4/0xa20 [ 716.430020] [] ? watchdog+0x11c/0xa20 [ 716.435462] [] kthread+0x26d/0x300 [ 716.440626] [] ? reset_hung_task_detector+0x20/0x20 [ 716.447266] [] ? kthread_park+0xa0/0xa0 [ 716.452870] [] ? kthread_park+0xa0/0xa0 [ 716.458465] [] ? kthread_park+0xa0/0xa0 [ 716.464061] [] ret_from_fork+0x5c/0x70 [ 716.469684] Sending NMI from CPU 1 to CPUs 0: [ 716.474234] NMI backtrace for cpu 0 skipped: idling at pc 0xffffffff839f8b86 [ 716.481481] Kernel panic - not syncing: hung_task: blocked tasks [ 716.487619] CPU: 1 PID: 519 Comm: khungtaskd Not tainted 4.9.112-g9e79039 #7 [ 716.494807] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 716.504135] ffff8801d8587cc8 ffffffff81eb3249 ffffffff83c8bc20 00000000ffffffff [ 716.512117] 0000000000000000 0000000000000001 dffffc0000000000 ffff8801d8587d88 [ 716.520095] ffffffff81421a55 0000000041b58ab3 ffffffff843bae78 ffffffff81421896 [ 716.528088] Call Trace: [ 716.530661] [] dump_stack+0xc1/0x128 [ 716.535998] [] panic+0x1bf/0x3bc [ 716.541007] [] ? add_taint.cold.6+0x16/0x16 [ 716.546954] [] ? ___preempt_schedule+0x16/0x18 [ 716.553157] [] ? nmi_trigger_cpumask_backtrace+0x100/0x14f [ 716.560406] [] watchdog+0x6c5/0xa20 [ 716.565666] [] ? watchdog+0x11c/0xa20 [ 716.571092] [] kthread+0x26d/0x300 [ 716.576254] [] ? reset_hung_task_detector+0x20/0x20 [ 716.582889] [] ? kthread_park+0xa0/0xa0 [ 716.588482] [] ? kthread_park+0xa0/0xa0 [ 716.594075] [] ? kthread_park+0xa0/0xa0 [ 716.599680] [] ret_from_fork+0x5c/0x70 [ 716.605688] Dumping ftrace buffer: [ 716.609229] (ftrace buffer empty) [ 716.612920] Kernel Offset: disabled [ 716.616527] Rebooting in 86400 seconds..