INIT: Id "1" respawning too fast: disabled for 5 minutes INIT: Id "2" 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 "4" respawning too fast: disabled for 5 minutes Warning: Permanently added 'ci-android-49-kasan-gce-9,10.128.0.47' (ECDSA) to the list of known hosts. executing program INIT: Id "4" 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 "6" 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 [ 567.508741] random: crng init done [ 736.039393] INFO: task blkid:3373 blocked for more than 120 seconds. [ 736.045925] Not tainted 4.9.66-gb763480 #103 [ 736.051104] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 736.059041] blkid D28208 3373 1866 0x00000004 [ 736.064892] ffff8801cefb8000 0000000000000000 ffff8801cd990540 ffff8801da29b000 [ 736.072991] ffff8801db321418 ffff8801ca087708 ffffffff838981cb 0000000000000000 [ 736.081019] 0000000000000007 00ff8801cefb8000 ffff8801db321ce8 ffff8801db321d10 [ 736.088973] Call Trace: [ 736.091549] [] ? __schedule+0x67b/0x1ba0 [ 736.097225] [] schedule+0x7f/0x1b0 [ 736.102395] [] schedule_preempt_disabled+0x13/0x20 [ 736.108949] [] mutex_lock_nested+0x312/0x870 [ 736.114992] [] ? __blkdev_get+0x10c/0xd50 [ 736.120763] [] ? mutex_lock_killable_nested+0x960/0x960 [ 736.127743] [] ? disk_block_events+0xc8/0x140 [ 736.133864] [] __blkdev_get+0x10c/0xd50 [ 736.139489] [] ? __blkdev_put+0x7e0/0x7e0 [ 736.145252] [] blkdev_get+0x33b/0x960 [ 736.150684] [] ? bd_link_disk_holder+0x6c0/0x6c0 [ 736.157057] [] ? bd_acquire+0x27/0x250 [ 736.162582] [] ? bd_acquire+0x88/0x250 [ 736.168084] [] ? _raw_spin_unlock+0x2c/0x50 [ 736.174056] [] blkdev_open+0x1a5/0x250 [ 736.179568] [] do_dentry_open+0x607/0xc60 [ 736.185330] [] ? blkdev_get_by_dev+0x60/0x60 [ 736.191372] [] vfs_open+0x105/0x220 [ 736.196617] [] ? may_open+0x231/0x2e0 [ 736.202049] [] path_openat+0x5ac/0x2910 [ 736.207638] [] ? path_lookupat+0x3f0/0x3f0 [ 736.213508] [] ? debug_check_no_locks_freed+0x2c0/0x2c0 [ 736.221202] [] ? __lock_is_held+0xa1/0xf0 [ 736.226966] [] do_filp_open+0x197/0x290 [ 736.232569] [] ? may_open_dev+0xe0/0xe0 [ 736.238161] [] ? _raw_spin_unlock+0x2c/0x50 [ 736.244133] [] ? __alloc_fd+0x1d7/0x510 [ 736.249763] [] do_sys_open+0x352/0x4c0 [ 736.255266] [] ? filp_open+0x70/0x70 [ 736.260623] [] ? entry_SYSCALL_64_fastpath+0x5/0xc6 [ 736.267260] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 736.274081] [] SyS_open+0x2d/0x40 [ 736.279151] [] entry_SYSCALL_64_fastpath+0x23/0xc6 [ 736.285714] [ 736.285714] Showing all locks held in the system: [ 736.292016] 2 locks held by khungtaskd/514: [ 736.296301] #0: (rcu_read_lock){......}, at: [] watchdog+0x125/0xa70 [ 736.304999] #1: (tasklist_lock){.+.+..}, at: [] debug_show_all_locks+0x70/0x280 [ 736.314677] 1 lock held by rsyslogd/3150: [ 736.319157] #0: (&f->f_pos_lock){+.+.+.}, at: [] __fdget_pos+0x9f/0xc0 [ 736.328021] 2 locks held by getty/3238: [ 736.331977] #0: (&tty->ldisc_sem){++++++}, at: [] ldsem_down_read+0x32/0x40 [ 736.341246] #1: (&ldata->atomic_read_lock){+.+...}, at: [] n_tty_read+0x1f4/0x16c0 [ 736.351127] 1 lock held by syzkaller946102/3370: [ 736.355847] #0: (&bdev->bd_mutex){+.+.+.}, at: [] __blkdev_put+0xbc/0x7e0 [ 736.364960] 1 lock held by blkid/3373: [ 736.368811] #0: (&bdev->bd_mutex){+.+.+.}, at: [] __blkdev_get+0x10c/0xd50 [ 736.378043] [ 736.379653] ============================================= [ 736.379653] [ 736.386751] NMI backtrace for cpu 0 [ 736.390366] CPU: 0 PID: 514 Comm: khungtaskd Not tainted 4.9.66-gb763480 #103 [ 736.397618] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 736.406938] ffff8801d99dfd00 ffffffff81d90749 0000000000000000 0000000000000000 [ 736.414886] 0000000000000000 0000000000000001 ffffffff810ba170 ffff8801d99dfd38 [ 736.422844] ffffffff81d9b86d 0000000000000000 0000000000000000 ffff8801cefb8418 [ 736.430790] Call Trace: [ 736.433344] [] dump_stack+0xc1/0x128 [ 736.438677] [] ? irq_force_complete_move+0x390/0x390 [ 736.445395] [] nmi_cpu_backtrace+0xfd/0x120 [ 736.451329] [] ? irq_force_complete_move+0x390/0x390 [ 736.458045] [] nmi_trigger_cpumask_backtrace+0x117/0x190 [ 736.465108] [] arch_trigger_cpumask_backtrace+0x14/0x20 [ 736.472084] [] watchdog+0x6f0/0xa70 [ 736.477323] [] ? watchdog+0x125/0xa70 [ 736.482739] [] kthread+0x26d/0x300 [ 736.487893] [] ? reset_hung_task_detector+0x20/0x20 [ 736.494520] [] ? kthread_park+0xa0/0xa0 [ 736.500117] [] ? kthread_park+0xa0/0xa0 [ 736.505714] [] ? kthread_park+0xa0/0xa0 [ 736.511308] [] ret_from_fork+0x2a/0x40 [ 736.516904] Sending NMI from CPU 0 to CPUs 1: [ 736.521412] NMI backtrace for cpu 1 skipped: idling at pc 0xffffffff838a8606 [ 736.528637] Kernel panic - not syncing: hung_task: blocked tasks [ 736.534758] CPU: 0 PID: 514 Comm: khungtaskd Not tainted 4.9.66-gb763480 #103 [ 736.541996] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 736.551317] ffff8801d99dfcb8 ffffffff81d90749 ffffffff83a89ca0 ffff8801d99dfd90 [ 736.559264] ffff8801cefb8400 dffffc0000000000 ffffffff84409000 ffff8801d99dfd80 [ 736.567221] ffffffff8142c411 0000000041b58ab3 ffffffff84186e58 ffffffff8142c255 [ 736.575177] Call Trace: [ 736.577731] [] dump_stack+0xc1/0x128 [ 736.583059] [] panic+0x1bc/0x3a8 [ 736.588041] [] ? percpu_up_read_preempt_enable.constprop.54+0xd7/0xd7 [ 736.596233] [] watchdog+0x701/0xa70 [ 736.601473] [] ? watchdog+0x125/0xa70 [ 736.606886] [] kthread+0x26d/0x300 [ 736.612038] [] ? reset_hung_task_detector+0x20/0x20 [ 736.618668] [] ? kthread_park+0xa0/0xa0 [ 736.624254] [] ? kthread_park+0xa0/0xa0 [ 736.629842] [] ? kthread_park+0xa0/0xa0 [ 736.635439] [] ret_from_fork+0x2a/0x40 [ 736.641447] Dumping ftrace buffer: [ 736.644982] (ftrace buffer empty) [ 736.648658] Kernel Offset: disabled [ 736.652255] Rebooting in 86400 seconds..