Warning: Permanently added '10.128.0.35' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [ 764.787047][ T9138] block nbd0: shutting down sockets
[ 917.769075][ T1046] INFO: task syz-executor118:9139 can't die for more than 143 seconds.
[ 917.777616][ T1046] syz-executor118 D28560 9139 9135 0x00004004
[ 917.784092][ T1046] Call Trace:
[ 917.787507][ T1046] __schedule+0x755/0x1580
[ 917.792070][ T1046] ? __sched_text_start+0x8/0x8
[ 917.796940][ T1046] ? generic_make_request+0x321/0xb50
[ 917.802421][ T1046] schedule+0xa8/0x270
[ 917.806505][ T1046] schedule_timeout+0x717/0xc50
[ 917.811469][ T1046] ? wait_for_completion_io+0x294/0x440
[ 917.817063][ T1046] ? usleep_range+0x170/0x170
[ 917.821822][ T1046] ? wait_for_completion_io+0x294/0x440
[ 917.827377][ T1046] ? lock_downgrade+0x920/0x920
[ 917.833095][ T1046] ? _raw_spin_unlock_irq+0x28/0x90
[ 917.838287][ T1046] ? wait_for_completion_io+0x294/0x440
[ 917.843944][ T1046] ? _raw_spin_unlock_irq+0x28/0x90
[ 917.849194][ T1046] ? lockdep_hardirqs_on+0x418/0x5d0
[ 917.854476][ T1046] io_schedule_timeout+0x26/0x80
[ 917.859550][ T1046] wait_for_completion_io+0x29c/0x440
[ 917.864932][ T1046] ? out_of_line_wait_on_bit_timeout+0x190/0x190
[ 917.871328][ T1046] ? wake_up_q+0xf0/0xf0
[ 917.875578][ T1046] ? lockdep_init_map+0x1be/0x6d0
[ 917.880671][ T1046] submit_bio_wait+0x11d/0x1c0
[ 917.885451][ T1046] ? submit_bio_wait_endio+0x40/0x40
[ 917.890815][ T1046] ? bio_associate_blkg+0x143/0x390
[ 917.896027][ T1046] blkdev_issue_flush+0x20d/0x300
[ 917.901136][ T1046] blkdev_fsync+0x95/0xd0
[ 917.905558][ T1046] ? thaw_bdev+0x1a0/0x1a0
[ 917.910037][ T1046] vfs_fsync_range+0x141/0x230
[ 917.915020][ T1046] ? __fget_light+0x1a9/0x230
[ 917.919906][ T1046] do_fsync+0x54/0xa0
[ 917.923904][ T1046] __x64_sys_fdatasync+0x36/0x50
[ 917.928831][ T1046] do_syscall_64+0xfd/0x6a0
[ 917.933405][ T1046] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 917.939344][ T1046] RIP: 0033:0x449749
[ 917.943232][ T1046] Code: Bad RIP value.
[ 917.947281][ T1046] RSP: 002b:00007f6f9a5fdce8 EFLAGS: 00000246 ORIG_RAX: 000000000000004b
[ 917.955796][ T1046] RAX: ffffffffffffffda RBX: 00000000006dac58 RCX: 0000000000449749
[ 917.964382][ T1046] RDX: 0000000000449749 RSI: 0000000000000000 RDI: 0000000000000009
[ 917.972510][ T1046] RBP: 00000000006dac50 R08: 0000000000000000 R09: 0000000000000000
[ 917.980616][ T1046] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dac5c
[ 917.988640][ T1046] R13: 00007fff3730e03f R14: 00007f6f9a5fe9c0 R15: 20c49ba5e353f7cf
[ 917.996684][ T1046] INFO: task syz-executor118:9139 blocked for more than 143 seconds.
[ 918.004785][ T1046] Not tainted 5.2.0-rc7-next-20190703 #28
[ 918.011201][ T1046] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 918.019976][ T1046] syz-executor118 D28560 9139 9135 0x00004004
[ 918.026303][ T1046] Call Trace:
[ 918.029669][ T1046] __schedule+0x755/0x1580
[ 918.034102][ T1046] ? __sched_text_start+0x8/0x8
[ 918.039040][ T1046] ? generic_make_request+0x321/0xb50
[ 918.044434][ T1046] schedule+0xa8/0x270
[ 918.048485][ T1046] schedule_timeout+0x717/0xc50
[ 918.053480][ T1046] ? wait_for_completion_io+0x294/0x440
[ 918.059196][ T1046] ? usleep_range+0x170/0x170
[ 918.063899][ T1046] ? wait_for_completion_io+0x294/0x440
[ 918.069514][ T1046] ? lock_downgrade+0x920/0x920
[ 918.074373][ T1046] ? _raw_spin_unlock_irq+0x28/0x90
[ 918.079632][ T1046] ? wait_for_completion_io+0x294/0x440
[ 918.085194][ T1046] ? _raw_spin_unlock_irq+0x28/0x90
[ 918.091152][ T1046] ? lockdep_hardirqs_on+0x418/0x5d0
[ 918.096608][ T1046] io_schedule_timeout+0x26/0x80
[ 918.101635][ T1046] wait_for_completion_io+0x29c/0x440
[ 918.107127][ T1046] ? out_of_line_wait_on_bit_timeout+0x190/0x190
[ 918.113510][ T1046] ? wake_up_q+0xf0/0xf0
[ 918.117760][ T1046] ? lockdep_init_map+0x1be/0x6d0
[ 918.122864][ T1046] submit_bio_wait+0x11d/0x1c0
[ 918.127665][ T1046] ? submit_bio_wait_endio+0x40/0x40
[ 918.133028][ T1046] ? bio_associate_blkg+0x143/0x390
[ 918.138241][ T1046] blkdev_issue_flush+0x20d/0x300
[ 918.143338][ T1046] blkdev_fsync+0x95/0xd0
[ 918.147676][ T1046] ? thaw_bdev+0x1a0/0x1a0
[ 918.152143][ T1046] vfs_fsync_range+0x141/0x230
[ 918.156912][ T1046] ? __fget_light+0x1a9/0x230
[ 918.161683][ T1046] do_fsync+0x54/0xa0
[ 918.165681][ T1046] __x64_sys_fdatasync+0x36/0x50
[ 918.170669][ T1046] do_syscall_64+0xfd/0x6a0
[ 918.175183][ T1046] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 918.181130][ T1046] RIP: 0033:0x449749
[ 918.185033][ T1046] Code: Bad RIP value.
[ 918.189144][ T1046] RSP: 002b:00007f6f9a5fdce8 EFLAGS: 00000246 ORIG_RAX: 000000000000004b
[ 918.197546][ T1046] RAX: ffffffffffffffda RBX: 00000000006dac58 RCX: 0000000000449749
[ 918.205596][ T1046] RDX: 0000000000449749 RSI: 0000000000000000 RDI: 0000000000000009
[ 918.213609][ T1046] RBP: 00000000006dac50 R08: 0000000000000000 R09: 0000000000000000
[ 918.222280][ T1046] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dac5c
[ 918.230321][ T1046] R13: 00007fff3730e03f R14: 00007f6f9a5fe9c0 R15: 20c49ba5e353f7cf
[ 918.238317][ T1046]
[ 918.238317][ T1046] Showing all locks held in the system:
[ 918.246115][ T1046] 1 lock held by khungtaskd/1046:
[ 918.251174][ T1046] #0: 0000000056802d62 (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x27e
[ 918.260722][ T1046] 2 locks held by rsyslogd/9024:
[ 918.265791][ T1046] #0: 0000000068810859 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110
[ 918.274439][ T1046] #1: 000000001b1f2e57 (&rq->lock){-.-.}, at: __schedule+0x1f5/0x1580
[ 918.282748][ T1046] 2 locks held by getty/9114:
[ 918.287397][ T1046] #0: 00000000c16cc5ad (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40
[ 918.296386][ T1046] #1: 000000008a4a997b (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10
[ 918.306083][ T1046] 2 locks held by getty/9115:
[ 918.310800][ T1046] #0: 000000001717282d (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40
[ 918.319791][ T1046] #1: 000000005bbabfdc (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10
[ 918.329524][ T1046] 2 locks held by getty/9116:
[ 918.334198][ T1046] #0: 000000001d8865fb (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40
[ 918.343196][ T1046] #1: 00000000d345e5b6 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10
[ 918.353304][ T1046] 2 locks held by getty/9117:
[ 918.358015][ T1046] #0: 00000000d7d8bdea (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40
[ 918.367086][ T1046] #1: 0000000038e05360 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10
[ 918.377343][ T1046] 2 locks held by getty/9118:
[ 918.382246][ T1046] #0: 00000000fa728e64 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40
[ 918.391634][ T1046] #1: 00000000f0e497da (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10
[ 918.401576][ T1046] 2 locks held by getty/9119:
[ 918.408678][ T1046] #0: 000000004c95d8db (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40
[ 918.417751][ T1046] #1: 000000000a2f5a50 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10
[ 918.427497][ T1046] 2 locks held by getty/9120:
[ 918.432230][ T1046] #0: 0000000057bd91cb (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40
[ 918.441346][ T1046] #1: 00000000bacf138e (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10
[ 918.450988][ T1046]
[ 918.453309][ T1046] =============================================
[ 918.453309][ T1046]
[ 918.461807][ T1046] NMI backtrace for cpu 1
[ 918.466130][ T1046] CPU: 1 PID: 1046 Comm: khungtaskd Not tainted 5.2.0-rc7-next-20190703 #28
[ 918.474787][ T1046] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 918.485198][ T1046] Call Trace:
[ 918.489366][ T1046] dump_stack+0x172/0x1f0
[ 918.493691][ T1046] nmi_cpu_backtrace.cold+0x70/0xb2
[ 918.498872][ T1046] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 918.505119][ T1046] ? lapic_can_unplug_cpu.cold+0x45/0x45
[ 918.510891][ T1046] nmi_trigger_cpumask_backtrace+0x23b/0x28b
[ 918.516870][ T1046] arch_trigger_cpumask_backtrace+0x14/0x20
[ 918.522795][ T1046] watchdog+0xc54/0x1320
[ 918.527290][ T1046] kthread+0x361/0x430
[ 918.531367][ T1046] ? reset_hung_task_detector+0x30/0x30
[ 918.536916][ T1046] ? kthread_cancel_delayed_work_sync+0x20/0x20
[ 918.543184][ T1046] ret_from_fork+0x24/0x30
[ 918.547758][ T1046] Sending NMI from CPU 1 to CPUs 0:
[ 918.553342][ C0] NMI backtrace for cpu 0
[ 918.553347][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.2.0-rc7-next-20190703 #28
[ 918.553351][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 918.553354][ C0] RIP: 0010:__local_bh_enable+0x0/0x130
[ 918.553362][ C0] Code: e8 35 4a 35 00 5d c3 0f 1f 00 55 89 c9 89 f6 48 89 e5 e8 23 4e 35 00 5d c3 90 55 89 f6 48 89 e5 e8 25 46 35 00 5d c3 0f 1f 00 <48> c7 c0 74 a6 a3 89 55 48 ba 00 00 00 00 00 fc ff df 48 89 c1 48
[ 918.553365][ C0] RSP: 0018:ffff8880ae809f60 EFLAGS: 00000046
[ 918.553370][ C0] RAX: 0000000080000201 RBX: ffffffff88c7a240 RCX: 0000000000000000
[ 918.553373][ C0] RDX: 0000000000000000 RSI: ffffffff81664bdc RDI: 0000000000000200
[ 918.553377][ C0] RBP: ffff8880ae809f68 R08: ffffffff88c7a240 R09: ffffed1015d06bfc
[ 918.553380][ C0] R10: ffffed1015d06bfb R11: ffff8880ae835fdb R12: ffffffff88c7a240
[ 918.553384][ C0] R13: ffffffff889a6100 R14: ffff8880ae800000 R15: 0000000000000000
[ 918.553387][ C0] FS: 0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
[ 918.553390][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 918.553394][ C0] CR2: ffffffffff600400 CR3: 000000009fb18000 CR4: 00000000001506f0
[ 918.553395][ C0] Call Trace:
[ 918.553397][ C0]
[ 918.553399][ C0] ? _local_bh_enable+0x1c/0x30
[ 918.553401][ C0] irq_enter+0xc2/0xe0
[ 918.553404][ C0] scheduler_ipi+0x28e/0x640
[ 918.553406][ C0] smp_reschedule_interrupt+0x78/0x4c0
[ 918.553409][ C0] reschedule_interrupt+0xf/0x20
[ 918.553410][ C0]
[ 918.553413][ C0] RIP: 0010:native_safe_halt+0xe/0x10
[ 918.553420][ C0] Code: 08 a6 78 fa eb 8a 90 90 90 90 90 90 e9 07 00 00 00 0f 00 2d 54 4e 54 00 f4 c3 66 90 e9 07 00 00 00 0f 00 2d 44 4e 54 00 fb f4 90 55 48 89 e5 41 57 41 56 41 55 41 54 53 e8 ce 54 2c fa e8 59
[ 918.553423][ C0] RSP: 0018:ffffffff88c07ce8 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff02
[ 918.553428][ C0] RAX: 1ffffffff11a5cbd RBX: ffffffff88c7a240 RCX: 0000000000000000
[ 918.553432][ C0] RDX: dffffc0000000000 RSI: 0000000000000006 RDI: ffffffff88c7aad4
[ 918.553435][ C0] RBP: ffffffff88c07d18 R08: ffffffff88c7a240 R09: 0000000000000000
[ 918.553450][ C0] R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000
[ 918.553455][ C0] R13: ffffffff89a37478 R14: 0000000000000000 R15: 0000000000000000
[ 918.553458][ C0] ? default_idle+0x4e/0x360
[ 918.553460][ C0] arch_cpu_idle+0xa/0x10
[ 918.553462][ C0] default_idle_call+0x84/0xb0
[ 918.553464][ C0] do_idle+0x413/0x760
[ 918.553467][ C0] ? arch_cpu_idle_exit+0x80/0x80
[ 918.553469][ C0] ? trace_hardirqs_on+0x67/0x240
[ 918.553472][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 918.553474][ C0] ? debug_smp_processor_id+0x3c/0x214
[ 918.553476][ C0] cpu_startup_entry+0x1b/0x20
[ 918.553479][ C0] rest_init+0x245/0x37b
[ 918.553481][ C0] arch_call_rest_init+0xe/0x1b
[ 918.553483][ C0] start_kernel+0x8de/0x91d
[ 918.553485][ C0] ? mem_encrypt_init+0xb/0xb
[ 918.553488][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 918.553490][ C0] ? x86_family+0x41/0x50
[ 918.553493][ C0] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20
[ 918.553495][ C0] x86_64_start_reservations+0x29/0x2b
[ 918.553498][ C0] x86_64_start_kernel+0x77/0x7b
[ 918.553500][ C0] secondary_startup_64+0xa4/0xb0
[ 918.554627][ T1046] Kernel panic - not syncing: hung_task: blocked tasks
[ 918.885383][ T1046] CPU: 1 PID: 1046 Comm: khungtaskd Not tainted 5.2.0-rc7-next-20190703 #28
[ 918.894029][ T1046] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 918.904165][ T1046] Call Trace:
[ 918.907441][ T1046] dump_stack+0x172/0x1f0
[ 918.911762][ T1046] panic+0x2dc/0x755
[ 918.915650][ T1046] ? add_taint.cold+0x16/0x16
[ 918.920312][ T1046] ? lapic_can_unplug_cpu.cold+0x45/0x45
[ 918.925937][ T1046] ? ___preempt_schedule+0x16/0x18
[ 918.931039][ T1046] ? nmi_trigger_cpumask_backtrace+0x21b/0x28b
[ 918.937179][ T1046] ? nmi_trigger_cpumask_backtrace+0x24c/0x28b
[ 918.943351][ T1046] ? nmi_trigger_cpumask_backtrace+0x256/0x28b
[ 918.949561][ T1046] ? nmi_trigger_cpumask_backtrace+0x21b/0x28b
[ 918.955995][ T1046] watchdog+0xc65/0x1320
[ 918.960328][ T1046] kthread+0x361/0x430
[ 918.964398][ T1046] ? reset_hung_task_detector+0x30/0x30
[ 918.969998][ T1046] ? kthread_cancel_delayed_work_sync+0x20/0x20
[ 918.976363][ T1046] ret_from_fork+0x24/0x30
[ 918.982071][ T1046] Kernel Offset: disabled
[ 918.986459][ T1046] Rebooting in 86400 seconds..