INIT: Id "5" 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 INIT: Id "2" respawning too fast: disabled for 5 minutes INIT: Id "4" respawning too fast: disabled for 5 minutes [ 411.942059] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.28' (ECDSA) to the list of known hosts. [ 417.397494] random: sshd: uninitialized urandom read (32 bytes read) executing program executing program INIT: Id "6" 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 INIT: Id "4" 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 [ 547.661460] random: crng init done [ 613.571140] INFO: task syz-executor061:3863 blocked for more than 120 seconds. [ 613.578534] Not tainted 4.9.97-g2bcbbd5 #14 [ 613.583426] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 613.591396] syz-executor061 D27176 3863 3861 0x00000000 [ 613.597181] ffff8801d8589800 0000000000000000 ffff8801d97464c0 ffffffff84629800 [ 613.605206] ffff8801db221b98 ffff8801d86a79f0 ffffffff839e375d 0000000000000002 [ 613.613227] 0000000041b58ab3 ffffffff843b8763 00ffffff8121f1e0 ffff8801db222468 [ 613.621247] Call Trace: [ 613.623888] [] ? __schedule+0x64d/0x1bd0 [ 613.629577] [] schedule+0x7f/0x1b0 [ 613.634832] [] blk_mq_freeze_queue_wait+0x114/0x230 [ 613.641496] [] ? plug_ctx_cmp+0x100/0x100 [ 613.647292] [] ? prepare_to_wait_event+0x450/0x450 [ 613.653872] [] blk_mq_freeze_queue+0x1d/0x20 [ 613.659927] [] lo_ioctl+0x722/0x1aa0 [ 613.665309] [] ? loop_lookup.part.19+0x110/0x110 [ 613.672041] [] blkdev_ioctl+0x7b6/0x1a70 [ 613.677726] [] ? blkpg_ioctl+0x920/0x920 [ 613.683476] [] ? do_readv_writev+0x1fe/0x7a0 [ 613.689526] [] ? vfs_write+0x530/0x530 [ 613.695146] [] block_ioctl+0xde/0x120 [ 613.700592] [] ? blkdev_fallocate+0x440/0x440 [ 613.706779] [] do_vfs_ioctl+0x1ac/0x11a0 [ 613.712492] [] ? ioctl_preallocate+0x220/0x220 [ 613.718702] [] ? _raw_spin_unlock_irqrestore+0x45/0x70 [ 613.725664] [] ? selinux_capable+0x40/0x40 [ 613.731556] [] ? vfs_writev+0x8f/0xc0 [ 613.736979] [] ? do_pwritev+0x13e/0x240 [ 613.742634] [] ? security_file_ioctl+0x8f/0xc0 [ 613.748843] [] SyS_ioctl+0x8f/0xc0 [ 613.754051] [] ? do_vfs_ioctl+0x11a0/0x11a0 [ 613.760013] [] do_syscall_64+0x1a6/0x490 [ 613.765734] [] entry_SYSCALL_64_after_swapgs+0x5d/0xdb [ 613.772652] [ 613.772652] Showing all locks held in the system: [ 613.778958] 2 locks held by khungtaskd/518: [ 613.783290] #0: (rcu_read_lock){......}, at: [] watchdog+0x11c/0xa20 [ 613.792032] #1: (tasklist_lock){.+.+..}, at: [] debug_show_all_locks+0x79/0x218 [ 613.801731] 2 locks held by getty/3780: [ 613.805681] #0: (&tty->ldisc_sem){++++++}, at: [] ldsem_down_read+0x32/0x40 [ 613.815019] #1: (&ldata->atomic_read_lock){+.+...}, at: [] n_tty_read+0x202/0x16e0 [ 613.825028] 1 lock held by syz-executor061/3863: [ 613.829772] #0: (&lo->lo_ctl_mutex/1){+.+.+.}, at: [] lo_ioctl+0x8b/0x1aa0 [ 613.839162] [ 613.840760] ============================================= [ 613.840760] [ 613.848072] NMI backtrace for cpu 0 [ 613.851744] CPU: 0 PID: 518 Comm: khungtaskd Not tainted 4.9.97-g2bcbbd5 #14 [ 613.858904] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 613.868232] ffff8801d9157d08 ffffffff81eb0b69 0000000000000000 0000000000000000 [ 613.876237] 0000000000000000 0000000000000001 ffffffff810b7d60 ffff8801d9157d40 [ 613.884244] ffffffff81ebbe97 0000000000000000 0000000000000000 0000000000000003 [ 613.892255] Call Trace: [ 613.894881] [] dump_stack+0xc1/0x128 [ 613.900253] [] ? irq_force_complete_move+0x320/0x320 [ 613.906987] [] nmi_cpu_backtrace.cold.2+0x48/0x87 [ 613.913449] [] ? irq_force_complete_move+0x320/0x320 [ 613.920171] [] nmi_trigger_cpumask_backtrace+0x12a/0x14f [ 613.927242] [] arch_trigger_cpumask_backtrace+0x14/0x20 [ 613.934239] [] watchdog+0x6b4/0xa20 [ 613.939486] [] ? watchdog+0x11c/0xa20 [ 613.944961] [] kthread+0x26d/0x300 [ 613.950129] [] ? reset_hung_task_detector+0x20/0x20 [ 613.956930] [] ? kthread_park+0xa0/0xa0 [ 613.962525] [] ? kthread_park+0xa0/0xa0 [ 613.968119] [] ? kthread_park+0xa0/0xa0 [ 613.973716] [] ret_from_fork+0x5c/0x70 [ 613.979301] Sending NMI from CPU 0 to CPUs 1: [ 613.983839] NMI backtrace for cpu 1 skipped: idling at pc 0xffffffff839f3266 [ 613.991110] Kernel panic - not syncing: hung_task: blocked tasks [ 613.997250] CPU: 0 PID: 518 Comm: khungtaskd Not tainted 4.9.97-g2bcbbd5 #14 [ 614.004417] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 614.013744] ffff8801d9157cc8 ffffffff81eb0b69 ffffffff83c8b4e0 00000000ffffffff [ 614.021752] 0000000000000000 0000000000000000 dffffc0000000000 ffff8801d9157d88 [ 614.029735] ffffffff8141f975 0000000041b58ab3 ffffffff843b8408 ffffffff8141f7b6 [ 614.037723] Call Trace: [ 614.040293] [] dump_stack+0xc1/0x128 [ 614.045633] [] panic+0x1bf/0x3bc [ 614.050633] [] ? add_taint.cold.6+0x16/0x16 [ 614.056585] [] ? ___preempt_schedule+0x16/0x18 [ 614.062801] [] ? nmi_trigger_cpumask_backtrace+0x100/0x14f [ 614.070047] [] watchdog+0x6c5/0xa20 [ 614.075294] [] ? watchdog+0x11c/0xa20 [ 614.080719] [] kthread+0x26d/0x300 [ 614.085888] [] ? reset_hung_task_detector+0x20/0x20 [ 614.092524] [] ? kthread_park+0xa0/0xa0 [ 614.098121] [] ? kthread_park+0xa0/0xa0 [ 614.103727] [] ? kthread_park+0xa0/0xa0 [ 614.109350] [] ret_from_fork+0x5c/0x70 [ 614.115487] Dumping ftrace buffer: [ 614.119024] (ftrace buffer empty) [ 614.122706] Kernel Offset: disabled [ 614.126314] Rebooting in 86400 seconds..