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 [ 287.092871] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.15.204' (ECDSA) to the list of known hosts. [ 292.566964] random: sshd: uninitialized urandom read (32 bytes read) executing program [ 292.656705] IPVS: Creating netns size=2536 id=1 INIT: Id "4" respawning too fast: disabled for 5 minutes INIT: Id "6" respawning too fast: disabled for 5 minutes INIT: 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: [ 522.738481] random: crng init done Id "2" respawning too fast: disabled for 5 minutes [ 572.820135] INFO: task syz-executor548:3854 blocked for more than 140 seconds. [ 572.827519] Not tainted 4.9.111-g03c70fe #6 [ 572.832383] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 572.840354] syz-executor548 D28616 3854 3847 0x00000004 [ 572.846150] ffff8801d7c0b000 0000000000000000 ffff8801b5941f80 ffffffff84629800 [ 572.854177] ffff8801db221c18 ffff8801b56af9f0 ffffffff839e7ded 0000000000000002 [ 572.862209] 0000000041b58ab3 ffffffff843bac1b 00ffffff81221510 ffff8801db2224e8 [ 572.870606] Call Trace: [ 572.873271] [] ? __schedule+0x64d/0x1bd0 [ 572.878966] [] schedule+0x7f/0x1b0 [ 572.884241] [] blk_mq_freeze_queue_wait+0x114/0x230 [ 572.890951] [] ? plug_ctx_cmp+0x100/0x100 [ 572.896789] [] ? prepare_to_wait_event+0x450/0x450 [ 572.903381] [] blk_mq_freeze_queue+0x1d/0x20 [ 572.909463] [] lo_ioctl+0x722/0x1aa0 [ 572.914868] [] ? loop_lookup.part.19+0x110/0x110 [ 572.921300] [] blkdev_ioctl+0x7b6/0x1a70 [ 572.926989] [] ? blkpg_ioctl+0x920/0x920 [ 572.932750] [] ? __lock_acquire+0x654/0x4070 [ 572.938832] [] ? exit_robust_list+0x220/0x220 [ 572.945035] [] ? vfs_write+0x530/0x530 [ 572.950583] [] block_ioctl+0xde/0x120 [ 572.956009] [] ? blkdev_fallocate+0x440/0x440 [ 572.962178] [] do_vfs_ioctl+0x1ac/0x11a0 [ 572.967868] [] ? ioctl_preallocate+0x220/0x220 [ 572.974152] [] ? selinux_capable+0x40/0x40 [ 572.980281] [] ? __fget+0x20a/0x3b0 [ 572.985539] [] ? __fget+0x231/0x3b0 [ 572.990878] [] ? __fget+0x47/0x3b0 [ 572.996106] [] ? security_file_ioctl+0x8f/0xc0 [ 573.002740] [] SyS_ioctl+0x8f/0xc0 [ 573.008093] [] ? do_vfs_ioctl+0x11a0/0x11a0 [ 573.014816] [] do_syscall_64+0x1a6/0x490 [ 573.020552] [] entry_SYSCALL_64_after_swapgs+0x5d/0xdb [ 573.027462] [ 573.027462] Showing all locks held in the system: [ 573.033832] 2 locks held by khungtaskd/519: [ 573.038152] #0: (rcu_read_lock){......}, at: [] watchdog+0x11c/0xa20 [ 573.047012] #1: (tasklist_lock){.+.+..}, at: [] debug_show_all_locks+0x79/0x218 [ 573.057816] 1 lock held by rsyslogd/3675: [ 573.062014] #0: (&f->f_pos_lock){+.+.+.}, at: [] __fdget_pos+0xac/0xd0 [ 573.070925] 2 locks held by getty/3771: [ 573.075049] #0: (&tty->ldisc_sem){++++++}, at: [] ldsem_down_read+0x32/0x40 [ 573.084501] #1: (&ldata->atomic_read_lock){+.+...}, at: [] n_tty_read+0x202/0x16e0 [ 573.094538] 1 lock held by syz-executor548/3854: [ 573.099286] #0: (&lo->lo_ctl_mutex/1){+.+.+.}, at: [] lo_ioctl+0x8b/0x1aa0 [ 573.110473] [ 573.112089] ============================================= [ 573.112089] [ 573.119141] NMI backtrace for cpu 0 [ 573.122791] CPU: 0 PID: 519 Comm: khungtaskd Not tainted 4.9.111-g03c70fe #6 [ 573.129963] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 573.139326] ffff8801d91c7d08 ffffffff81eb2729 0000000000000000 0000000000000000 [ 573.147350] 0000000000000000 0000000000000001 ffffffff810b9af0 ffff8801d91c7d40 [ 573.155355] ffffffff81ebda27 0000000000000000 0000000000000000 0000000000000002 [ 573.163407] Call Trace: [ 573.166006] [] dump_stack+0xc1/0x128 [ 573.171391] [] ? irq_force_complete_move+0x320/0x320 [ 573.178118] [] nmi_cpu_backtrace.cold.2+0x48/0x87 [ 573.184594] [] ? irq_force_complete_move+0x320/0x320 [ 573.191320] [] nmi_trigger_cpumask_backtrace+0x12a/0x14f [ 573.198547] [] arch_trigger_cpumask_backtrace+0x14/0x20 [ 573.205574] [] watchdog+0x6b4/0xa20 [ 573.211522] [] ? watchdog+0x11c/0xa20 [ 573.216994] [] kthread+0x26d/0x300 [ 573.222317] [] ? reset_hung_task_detector+0x20/0x20 [ 573.229307] [] ? kthread_park+0xa0/0xa0 [ 573.234904] [] ? kthread_park+0xa0/0xa0 [ 573.240509] [] ? kthread_park+0xa0/0xa0 [ 573.246114] [] ret_from_fork+0x5c/0x70 [ 573.251896] Sending NMI from CPU 0 to CPUs 1: [ 573.256415] NMI backtrace for cpu 1 skipped: idling at pc 0xffffffff839f78f6 [ 573.264025] Kernel panic - not syncing: hung_task: blocked tasks [ 573.270171] CPU: 0 PID: 519 Comm: khungtaskd Not tainted 4.9.111-g03c70fe #6 [ 573.277345] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 573.286677] ffff8801d91c7cc8 ffffffff81eb2729 ffffffff83c8bc20 00000000ffffffff [ 573.294773] 0000000000000000 0000000000000000 dffffc0000000000 ffff8801d91c7d88 [ 573.303122] ffffffff814219f5 0000000041b58ab3 ffffffff843ba8c0 ffffffff81421836 [ 573.311240] Call Trace: [ 573.313821] [] dump_stack+0xc1/0x128 [ 573.319181] [] panic+0x1bf/0x3bc [ 573.324174] [] ? add_taint.cold.6+0x16/0x16 [ 573.330125] [] ? ___preempt_schedule+0x16/0x18 [ 573.336334] [] ? nmi_trigger_cpumask_backtrace+0x100/0x14f [ 573.343591] [] watchdog+0x6c5/0xa20 [ 573.348842] [] ? watchdog+0x11c/0xa20 [ 573.354268] [] kthread+0x26d/0x300 [ 573.359447] [] ? reset_hung_task_detector+0x20/0x20 [ 573.366176] [] ? kthread_park+0xa0/0xa0 [ 573.371784] [] ? kthread_park+0xa0/0xa0 [ 573.377396] [] ? kthread_park+0xa0/0xa0 [ 573.382996] [] ret_from_fork+0x5c/0x70 [ 573.389130] Dumping ftrace buffer: [ 573.392700] (ftrace buffer empty) [ 573.396387] Kernel Offset: disabled [ 573.399995] Rebooting in 86400 seconds..