INIT: Id "3" respawning too fast: disabled for 5 minutes INIT: Id "6" respawning too fast: disabled for 5 minutes INIT: Id "4" respawning too fast: disabled for 5 minutes INIT: Id "2" respawning too fast: disabled for 5 minutes INIT: Id "5" respawning too fast: disabled for 5 minutes Warning: Permanently added '10.128.0.215' (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 INIT: Id "1" 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 "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 [ 1003.078946] INFO: task syz-executor068:2438 blocked for more than 140 seconds. [ 1003.086356] Not tainted 4.9.194+ #0 [ 1003.090607] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1003.098571] syz-executor068 D29096 2438 2435 0x00000000 [ 1003.104449] 0000000000000083 ffff8801c80d97c0 ffff8801c858ac00 ffff8801db721000 [ 1003.112522] ffff8801c9775f00 ffff8801db721018 ffff8801c81d7688 ffffffff8281af8e [ 1003.120562] ffff8801c80d97c0 ffffffff841f8b40 00ff8801c81d75e8 ffff8801db7218f0 [ 1003.128582] Call Trace: [ 1003.131214] [<000000002a9974c3>] ? __schedule+0x6ce/0x1f10 [ 1003.136920] [<000000003237d061>] ? io_schedule_timeout+0x390/0x390 [ 1003.143354] [<00000000b7779398>] ? mark_held_locks+0xb1/0x100 [ 1003.149335] [<000000000f0a2ed7>] schedule+0x92/0x1c0 [ 1003.154516] [<00000000f5acc27b>] schedule_preempt_disabled+0x13/0x20 [ 1003.161116] [<00000000924350c3>] mutex_lock_nested+0x38d/0x920 [ 1003.167180] [<000000001859d03e>] ? lo_open+0x1d/0xb0 [ 1003.172394] [<0000000086963c86>] ? mutex_trylock+0x3f0/0x3f0 [ 1003.178271] [<0000000003dc76fe>] ? disk_get_part+0x158/0x2c0 [ 1003.184184] [<00000000407f434a>] ? loop_unregister_transfer+0x90/0x90 [ 1003.190864] [<000000001859d03e>] lo_open+0x1d/0xb0 [ 1003.195861] [<00000000b249d5d9>] __blkdev_get+0x268/0xeb0 [ 1003.201500] [<00000000446047a3>] ? __blkdev_put+0x840/0x840 [ 1003.207299] [<0000000021ddb2ff>] blkdev_get+0x2e8/0x920 [ 1003.212784] [<00000000706a0eda>] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 1003.219552] [<00000000864abb6b>] ? bd_may_claim+0xd0/0xd0 [ 1003.225159] [<00000000cf8cdb48>] ? bd_acquire+0x26/0x250 [ 1003.230708] [<000000003e54b50c>] ? bd_acquire+0x88/0x250 [ 1003.236236] [<00000000ac91a386>] ? _raw_spin_unlock+0x2d/0x50 [ 1003.242399] [<00000000f7133286>] blkdev_open+0x1aa/0x250 [ 1003.247942] [<000000005c73c70a>] do_dentry_open+0x422/0xd20 [ 1003.253762] [<00000000076ede67>] ? blkdev_get_by_dev+0x80/0x80 [ 1003.259825] [<00000000fcb80e78>] vfs_open+0x105/0x230 [ 1003.265103] [<000000005c1c10d2>] ? may_open.isra.0+0x139/0x290 [ 1003.271189] [<000000002356d63d>] path_openat+0xbf5/0x2f60 [ 1003.276801] [<00000000b6fd0a07>] ? path_mountpoint+0x6d0/0x6d0 [ 1003.282873] [<000000003cf8e71c>] do_filp_open+0x1a1/0x280 [ 1003.288489] [<000000006ffd9a8c>] ? may_open_dev+0xe0/0xe0 [ 1003.294137] [<0000000068977b1c>] ? __alloc_fd+0x1d4/0x490 [ 1003.299766] [<00000000ac91a386>] ? _raw_spin_unlock+0x2d/0x50 [ 1003.305726] [<0000000068977b1c>] ? __alloc_fd+0x1d4/0x490 [ 1003.311364] [<00000000535f7b1a>] do_sys_open+0x2f0/0x610 [ 1003.316884] [<0000000084929687>] ? filp_open+0x70/0x70 [ 1003.322277] [<000000004ce5043e>] ? SyS_waitid+0x2d0/0x2d0 [ 1003.327891] [<0000000050bfd74e>] ? task_stopped_code+0x140/0x140 [ 1003.334160] [<00000000563f4a14>] SyS_open+0x2d/0x40 [ 1003.339274] [<0000000061c342a8>] ? do_sys_open+0x610/0x610 [ 1003.344963] [<0000000043927aeb>] do_syscall_64+0x1ad/0x5c0 [ 1003.350709] [<000000004d3265b6>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb [ 1003.357637] [ 1003.357637] Showing all locks held in the system: [ 1003.364015] 2 locks held by khungtaskd/24: [ 1003.368232] #0: (rcu_read_lock){......}, at: [<000000003c48beb4>] watchdog+0x14b/0xaf0 [ 1003.377103] #1: (tasklist_lock){.+.+..}, at: [<000000006c930669>] debug_show_all_locks+0x7f/0x21f [ 1003.386865] 1 lock held by rsyslogd/1897: [ 1003.391050] #0: (&f->f_pos_lock){+.+.+.}, at: [<00000000c430600a>] __fdget_pos+0xa8/0xd0 [ 1003.400063] 2 locks held by getty/2025: [ 1003.404051] #0: (&tty->ldisc_sem){++++++}, at: [<00000000e099ab48>] ldsem_down_read+0x33/0x40 [ 1003.413495] #1: (&ldata->atomic_read_lock){+.+...}, at: [<00000000201a1b54>] n_tty_read+0x1fe/0x1820 [ 1003.423585] 2 locks held by syz-executor068/2438: [ 1003.428416] #0: (&bdev->bd_mutex){+.+.+.}, at: [<00000000e6504f3f>] __blkdev_get+0x10e/0xeb0 [ 1003.437711] #1: (loop_index_mutex){+.+.+.}, at: [<000000001859d03e>] lo_open+0x1d/0xb0 [ 1003.446490] 1 lock held by syz-executor068/2469: [ 1003.451263] #0: (loop_index_mutex){+.+.+.}, at: [<000000005cca9fb3>] loop_control_ioctl+0x7a/0x320 [ 1003.461089] 2 locks held by syz-executor068/2472: [ 1003.465905] #0: (loop_index_mutex){+.+.+.}, at: [<000000005cca9fb3>] loop_control_ioctl+0x7a/0x320 [ 1003.475693] #1: (&lo->lo_ctl_mutex#2){+.+.+.}, at: [<000000005304b2bd>] loop_control_ioctl+0x17f/0x320 [ 1003.486055] 2 locks held by syz-executor068/2473: [ 1003.490932] #0: (&bdev->bd_mutex){+.+.+.}, at: [<000000006ee9fa0d>] __blkdev_put+0xbb/0x840 [ 1003.500114] #1: (loop_index_mutex){+.+.+.}, at: [<00000000d48edcc7>] lo_release+0x20/0x1b0 [ 1003.509229] 1 lock held by blkid/2475: [ 1003.513098] #0: (&bdev->bd_mutex){+.+.+.}, at: [<00000000c9323e6a>] blkdev_put+0x2b/0x560 [ 1003.522113] 2 locks held by blkid/2476: [ 1003.526082] #0: (&bdev->bd_mutex){+.+.+.}, at: [<000000006ee9fa0d>] __blkdev_put+0xbb/0x840 [ 1003.535261] #1: (loop_index_mutex){+.+.+.}, at: [<00000000d48edcc7>] lo_release+0x20/0x1b0 [ 1003.544366] 2 locks held by syz-executor068/2480: [ 1003.549231] #0: (&bdev->bd_mutex){+.+.+.}, at: [<00000000e6504f3f>] __blkdev_get+0x10e/0xeb0 [ 1003.558499] #1: (loop_index_mutex){+.+.+.}, at: [<000000001859d03e>] lo_open+0x1d/0xb0 [ 1003.567271] 1 lock held by blkid/2482: [ 1003.571263] #0: (&bdev->bd_mutex){+.+.+.}, at: [<00000000e6504f3f>] __blkdev_get+0x10e/0xeb0 [ 1003.580541] 1 lock held by blkid/2483: [ 1003.584411] #0: (&bdev->bd_mutex){+.+.+.}, at: [<00000000e6504f3f>] __blkdev_get+0x10e/0xeb0 [ 1003.593694] 2 locks held by blkid/2484: [ 1003.597639] #0: (&bdev->bd_mutex){+.+.+.}, at: [<00000000e6504f3f>] __blkdev_get+0x10e/0xeb0 [ 1003.606997] #1: (loop_index_mutex){+.+.+.}, at: [<000000001859d03e>] lo_open+0x1d/0xb0 [ 1003.615798] 2 locks held by syz-executor068/2485: [ 1003.620926] #0: (&lo->lo_ctl_mutex/1){+.+.+.}, at: [<00000000bfaf2b37>] lo_ioctl+0x8e/0x1b10 [ 1003.630351] #1: (&bdev->bd_mutex){+.+.+.}, at: [<000000006b0b5cf4>] blkdev_reread_part+0x1f/0x40 [ 1003.639994] 2 locks held by blkid/2487: [ 1003.643948] #0: (&bdev->bd_mutex){+.+.+.}, at: [<00000000e6504f3f>] __blkdev_get+0x10e/0xeb0 [ 1003.653228] #1: (loop_index_mutex){+.+.+.}, at: [<000000001859d03e>] lo_open+0x1d/0xb0 [ 1003.663175] [ 1003.664786] ============================================= [ 1003.664786] [ 1003.671894] NMI backtrace for cpu 1 [ 1003.675517] CPU: 1 PID: 24 Comm: khungtaskd Not tainted 4.9.194+ #0 [ 1003.681919] ffff8801d98d7cc8 ffffffff81b67001 0000000000000001 0000000000000000 [ 1003.689993] 0000000000000001 ffffffff81099d01 dffffc0000000000 ffff8801d98d7d00 [ 1003.697990] ffffffff81b7229c 0000000000000001 0000000000000000 0000000000000001 [ 1003.706028] Call Trace: [ 1003.708610] [<000000006dae6b7e>] dump_stack+0xc1/0x120 [ 1003.713963] [<0000000049b42e10>] ? irq_force_complete_move+0x271/0x300 [ 1003.720721] [<00000000cd495e85>] nmi_cpu_backtrace.cold+0x47/0x87 [ 1003.727026] [<0000000078c07b3b>] ? irq_force_complete_move+0x300/0x300 [ 1003.733759] [<0000000024dda49f>] nmi_trigger_cpumask_backtrace+0x124/0x155 [ 1003.740842] [<00000000039273c7>] arch_trigger_cpumask_backtrace+0x14/0x20 [ 1003.747830] [<000000007597b42d>] watchdog+0x670/0xaf0 [ 1003.753082] [<000000003c48beb4>] ? watchdog+0x14b/0xaf0 [ 1003.758507] [<00000000e66a428d>] ? trace_hardirqs_on_caller+0x385/0x5a0 [ 1003.765343] [<000000000e43a96e>] ? hungtask_pm_notify+0x60/0x60 [ 1003.771467] [<00000000ef32b2f2>] kthread+0x278/0x310 [ 1003.776631] [<00000000b33e1af1>] ? kthread_park+0xa0/0xa0 [ 1003.782233] [<00000000706a0eda>] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 1003.788962] [<00000000458c34cb>] ? _raw_spin_unlock_irq+0x39/0x60 [ 1003.795266] [<00000000cef786f2>] ? finish_task_switch+0x1e5/0x660 [ 1003.801556] [<0000000024af1b7c>] ? finish_task_switch+0x1b7/0x660 [ 1003.807848] [<000000000651d1ab>] ? __switch_to_asm+0x41/0x70 [ 1003.813705] [<0000000008d68faf>] ? __switch_to_asm+0x35/0x70 [ 1003.819562] [<000000000651d1ab>] ? __switch_to_asm+0x41/0x70 [ 1003.825441] [<00000000b33e1af1>] ? kthread_park+0xa0/0xa0 [ 1003.831076] [<00000000b33e1af1>] ? kthread_park+0xa0/0xa0 [ 1003.836700] [<00000000840713bf>] ret_from_fork+0x5c/0x70 [ 1003.842373] Sending NMI from CPU 1 to CPUs 0: [ 1003.846911] NMI backtrace for cpu 0 skipped: idling at pc 0xffffffff8282a0e1 [ 1003.854221] Kernel panic - not syncing: hung_task: blocked tasks [ 1003.860452] CPU: 1 PID: 24 Comm: khungtaskd Not tainted 4.9.194+ #0 [ 1003.866835] ffff8801d98d7c60 ffffffff81b67001 ffff8801c80d9700 ffffffff82a7b6c0 [ 1003.874840] 00000000ffffffff 0000000000000001 dffffc0000000000 ffff8801d98d7d40 [ 1003.882855] ffffffff813fef3a 0000000041b58ab3 ffffffff82e32f55 ffffffff813fed61 [ 1003.890874] Call Trace: [ 1003.893457] [<000000006dae6b7e>] dump_stack+0xc1/0x120 [ 1003.898807] [<00000000a7aadae7>] panic+0x1d9/0x3bd [ 1003.903810] [<000000002b3856f7>] ? add_taint.cold+0x16/0x16 [ 1003.909589] [<0000000078c07b3b>] ? irq_force_complete_move+0x300/0x300 [ 1003.916394] [<000000004bf24be9>] ? ___preempt_schedule+0x16/0x18 [ 1003.922633] [<0000000086689bc2>] ? nmi_trigger_cpumask_backtrace+0x135/0x155 [ 1003.929911] [<00000000cb2cb909>] ? nmi_trigger_cpumask_backtrace+0x13f/0x155 [ 1003.937164] [<00000000a6486f9b>] watchdog+0x681/0xaf0 [ 1003.942419] [<000000003c48beb4>] ? watchdog+0x14b/0xaf0 [ 1003.947844] [<00000000e66a428d>] ? trace_hardirqs_on_caller+0x385/0x5a0 [ 1003.954667] [<000000000e43a96e>] ? hungtask_pm_notify+0x60/0x60 [ 1003.960806] [<00000000ef32b2f2>] kthread+0x278/0x310 [ 1003.965991] [<00000000b33e1af1>] ? kthread_park+0xa0/0xa0 [ 1003.971646] [<00000000706a0eda>] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 1003.978435] [<00000000458c34cb>] ? _raw_spin_unlock_irq+0x39/0x60 [ 1003.984735] [<00000000cef786f2>] ? finish_task_switch+0x1e5/0x660 [ 1003.991036] [<0000000024af1b7c>] ? finish_task_switch+0x1b7/0x660 [ 1003.997338] [<000000000651d1ab>] ? __switch_to_asm+0x41/0x70 [ 1004.003197] [<0000000008d68faf>] ? __switch_to_asm+0x35/0x70 [ 1004.009057] [<000000000651d1ab>] ? __switch_to_asm+0x41/0x70 [ 1004.014977] [<00000000b33e1af1>] ? kthread_park+0xa0/0xa0 [ 1004.020601] [<00000000b33e1af1>] ? kthread_park+0xa0/0xa0 [ 1004.026211] [<00000000840713bf>] ret_from_fork+0x5c/0x70 [ 1004.032793] Kernel Offset: disabled [ 1004.036414] Rebooting in 86400 seconds..