Warning: Permanently added '10.128.0.89' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [ 636.695991][ T1171] INFO: task syz-executor555:6854 blocked for more than 143 seconds.
[ 636.704285][ T1171] Not tainted 5.9.0-rc3-next-20200903-syzkaller #0
[ 636.711950][ T1171] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 636.720732][ T1171] task:syz-executor555 state:D stack:28104 pid: 6854 ppid: 6848 flags:0x00004000
[ 636.730177][ T1171] Call Trace:
[ 636.733587][ T1171] __schedule+0xea9/0x2230
[ 636.738137][ T1171] ? io_schedule_timeout+0x140/0x140
[ 636.743435][ T1171] ? lockdep_hardirqs_on+0x53/0x100
[ 636.748832][ T1171] schedule+0xd0/0x2a0
[ 636.752931][ T1171] schedule_timeout+0x1d8/0x250
[ 636.757847][ T1171] ? usleep_range+0x170/0x170
[ 636.762660][ T1171] ? lock_downgrade+0x830/0x830
[ 636.767633][ T1171] ? do_raw_spin_lock+0x120/0x2b0
[ 636.772661][ T1171] ? _raw_spin_unlock_irq+0x1f/0x80
[ 636.778015][ T1171] ? lockdep_hardirqs_on_prepare+0x354/0x530
[ 636.784009][ T1171] ? _raw_spin_unlock_irq+0x1f/0x80
[ 636.789346][ T1171] wait_for_completion+0x163/0x260
[ 636.794477][ T1171] ? wait_for_completion_interruptible+0x2e0/0x2e0
[ 636.801168][ T1171] ? apparmor_capable+0x1d8/0x460
[ 636.806353][ T1171] ? security_capable+0x8f/0xc0
[ 636.811266][ T1171] io_uring_setup+0x1495/0x29a0
[ 636.816237][ T1171] ? io_sq_thread+0xe00/0xe00
[ 636.820912][ T1171] ? io_issue_sqe+0x5bb0/0x5bb0
[ 636.825865][ T1171] ? io_wake_function+0x2e0/0x2e0
[ 636.830896][ T1171] ? check_preemption_disabled+0x50/0x130
[ 636.836692][ T1171] ? syscall_enter_from_user_mode+0x20/0x290
[ 636.842672][ T1171] ? lockdep_hardirqs_on+0x53/0x100
[ 636.848035][ T1171] do_syscall_64+0x2d/0x70
[ 636.852465][ T1171] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 636.858433][ T1171] RIP: 0033:0x440299
[ 636.862341][ T1171] Code: Bad RIP value.
[ 636.866505][ T1171] RSP: 002b:00007ffcdde24a78 EFLAGS: 00000246 ORIG_RAX: 00000000000001a9
[ 636.874938][ T1171] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440299
[ 636.883003][ T1171] RDX: 0000000000400b40 RSI: 0000000020000540 RDI: 0000000000006dab
[ 636.891094][ T1171] RBP: 00000000006ca018 R08: 0000000000000000 R09: 0000000000000000
[ 636.899158][ T1171] R10: 00000000ffffffff R11: 0000000000000246 R12: 0000000000401aa0
[ 636.907243][ T1171] R13: 0000000000401b30 R14: 0000000000000000 R15: 0000000000000000
[ 636.915253][ T1171] INFO: task io_uring-sq:6855 blocked for more than 143 seconds.
[ 636.923053][ T1171] Not tainted 5.9.0-rc3-next-20200903-syzkaller #0
[ 636.930167][ T1171] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 636.938908][ T1171] task:io_uring-sq state:D stack:31200 pid: 6855 ppid: 2 flags:0x00004000
[ 636.948318][ T1171] Call Trace:
[ 636.951610][ T1171] __schedule+0xea9/0x2230
[ 636.956091][ T1171] ? io_schedule_timeout+0x140/0x140
[ 636.961400][ T1171] ? _raw_spin_unlock_irqrestore+0x6f/0x90
[ 636.967336][ T1171] schedule+0xd0/0x2a0
[ 636.971428][ T1171] ? __do_sys_io_uring_enter+0x1940/0x1940
[ 636.977298][ T1171] schedule_preempt_disabled+0xf/0x20
[ 636.982770][ T1171] kthread+0x2ac/0x4a0
[ 636.986940][ T1171] ? __kthread_bind_mask+0xc0/0xc0
[ 636.992132][ T1171] ret_from_fork+0x1f/0x30
[ 636.996634][ T1171]
[ 636.996634][ T1171] Showing all locks held in the system:
[ 637.004364][ T1171] 1 lock held by khungtaskd/1171:
[ 637.009518][ T1171] #0: ffffffff89c67500 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260
[ 637.019582][ T1171] 1 lock held by in:imklog/6548:
[ 637.024511][ T1171] #0: ffff8880a2d5d930 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100
[ 637.033798][ T1171]
[ 637.036194][ T1171] =============================================
[ 637.036194][ T1171]
[ 637.044603][ T1171] NMI backtrace for cpu 1
[ 637.049068][ T1171] CPU: 1 PID: 1171 Comm: khungtaskd Not tainted 5.9.0-rc3-next-20200903-syzkaller #0
[ 637.058529][ T1171] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 637.068576][ T1171] Call Trace:
[ 637.071953][ T1171] dump_stack+0x198/0x1fd
[ 637.076292][ T1171] nmi_cpu_backtrace.cold+0x44/0xd7
[ 637.081527][ T1171] ? lapic_can_unplug_cpu.cold+0x38/0x38
[ 637.087148][ T1171] nmi_trigger_cpumask_backtrace+0x1b3/0x223
[ 637.093176][ T1171] watchdog+0xd89/0xf30
[ 637.097332][ T1171] ? trace_sched_process_hang+0x2e0/0x2e0
[ 637.103049][ T1171] kthread+0x3b5/0x4a0
[ 637.107126][ T1171] ? __kthread_bind_mask+0xc0/0xc0
[ 637.112230][ T1171] ret_from_fork+0x1f/0x30
[ 637.116785][ T1171] Sending NMI from CPU 1 to CPUs 0:
[ 637.122131][ C0] NMI backtrace for cpu 0
[ 637.122139][ C0] CPU: 0 PID: 3898 Comm: systemd-journal Not tainted 5.9.0-rc3-next-20200903-syzkaller #0
[ 637.122146][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 637.122150][ C0] RIP: 0033:0x561045799a2b
[ 637.122162][ C0] Code: 49 89 fd 48 89 f5 89 d3 4d 89 c4 75 08 85 d2 0f 85 8a 02 00 00 85 db 74 17 8b 84 24 18 01 00 00 83 e0 07 41 3b 85 10 02 00 00 <89> 44 24 0c 7e 3f 31 ff e8 e8 16 ff ff 48 8b 84 24 b8 00 00 00 64
[ 637.122166][ C0] RSP: 002b:00007fff5b8c24a0 EFLAGS: 00000297
[ 637.122176][ C0] RAX: 0000000000000006 RBX: 0000000000000006 RCX: 000000000000007f
[ 637.122182][ C0] RDX: 0000000000000006 RSI: 00007fff5b8c2650 RDI: 00007fff5b8c5040
[ 637.122188][ C0] RBP: 00007fff5b8c2650 R08: 0000000000000000 R09: 0000000000000000
[ 637.122193][ C0] R10: 0000000000000069 R11: 00000000ffffffff R12: 0000000000000000
[ 637.122199][ C0] R13: 00007fff5b8c5040 R14: 0000000000000000 R15: 0000000000000000
[ 637.122204][ C0] FS: 00007fefbc0ff8c0 GS: 0000000000000000
[ 637.123020][ T1171] Kernel panic - not syncing: hung_task: blocked tasks
[ 637.229176][ T1171] CPU: 1 PID: 1171 Comm: khungtaskd Not tainted 5.9.0-rc3-next-20200903-syzkaller #0
[ 637.238742][ T1171] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 637.248798][ T1171] Call Trace:
[ 637.252083][ T1171] dump_stack+0x198/0x1fd
[ 637.256444][ T1171] panic+0x347/0x7c0
[ 637.260365][ T1171] ? __warn_printk+0xf3/0xf3
[ 637.264939][ T1171] ? cpumask_next+0x3c/0x40
[ 637.269457][ T1171] ? printk_safe_flush+0xd6/0x120
[ 637.274466][ T1171] ? watchdog.cold+0x22d/0x24b
[ 637.279223][ T1171] ? watchdog+0xc59/0xf30
[ 637.283541][ T1171] watchdog.cold+0x23e/0x24b
[ 637.288115][ T1171] ? trace_sched_process_hang+0x2e0/0x2e0
[ 637.293859][ T1171] kthread+0x3b5/0x4a0
[ 637.297912][ T1171] ? __kthread_bind_mask+0xc0/0xc0
[ 637.303013][ T1171] ret_from_fork+0x1f/0x30
[ 637.308769][ T1171] Kernel Offset: disabled
[ 637.313094][ T1171] Rebooting in 86400 seconds..