Warning: Permanently added '10.128.0.220' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [ 595.876860][ T1165] INFO: task syz-executor428:6875 blocked for more than 143 seconds.
[ 595.885190][ T1165] Not tainted 5.9.0-rc3-next-20200903-syzkaller #0
[ 595.894103][ T1165] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 595.903760][ T1165] task:syz-executor428 state:D stack:28104 pid: 6875 ppid: 6869 flags:0x00004000
[ 595.913147][ T1165] Call Trace:
[ 595.916591][ T1165] __schedule+0xea9/0x2230
[ 595.921101][ T1165] ? io_schedule_timeout+0x140/0x140
[ 595.926376][ T1165] schedule+0xd0/0x2a0
[ 595.930568][ T1165] schedule_timeout+0x1d8/0x250
[ 595.935448][ T1165] ? usleep_range+0x170/0x170
[ 595.940379][ T1165] ? lock_downgrade+0x830/0x830
[ 595.945257][ T1165] ? do_raw_spin_lock+0x120/0x2b0
[ 595.950362][ T1165] ? _raw_spin_unlock_irq+0x1f/0x80
[ 595.955592][ T1165] ? lockdep_hardirqs_on_prepare+0x354/0x530
[ 595.961750][ T1165] ? _raw_spin_unlock_irq+0x1f/0x80
[ 595.967018][ T1165] wait_for_completion+0x163/0x260
[ 595.972146][ T1165] ? lockdep_hardirqs_on_prepare+0x354/0x530
[ 595.978189][ T1165] ? wait_for_completion_interruptible+0x2e0/0x2e0
[ 595.984709][ T1165] ? _raw_spin_unlock_irqrestore+0x5c/0x90
[ 595.990690][ T1165] ? __kthread_bind_mask+0xa1/0xc0
[ 595.995859][ T1165] io_uring_setup+0x1495/0x29a0
[ 596.000802][ T1165] ? io_sq_thread+0xe00/0xe00
[ 596.005502][ T1165] ? io_issue_sqe+0x5bb0/0x5bb0
[ 596.010414][ T1165] ? io_wake_function+0x2e0/0x2e0
[ 596.015461][ T1165] ? check_preemption_disabled+0x50/0x130
[ 596.021279][ T1165] ? syscall_enter_from_user_mode+0x20/0x290
[ 596.027932][ T1165] ? lockdep_hardirqs_on+0x53/0x100
[ 596.033424][ T1165] do_syscall_64+0x2d/0x70
[ 596.037954][ T1165] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 596.043860][ T1165] RIP: 0033:0x440229
[ 596.047801][ T1165] Code: Bad RIP value.
[ 596.051903][ T1165] RSP: 002b:00007ffccdf7ee68 EFLAGS: 00000246 ORIG_RAX: 00000000000001a9
[ 596.060373][ T1165] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440229
[ 596.068435][ T1165] RDX: 0000000000400ad0 RSI: 0000000020000280 RDI: 000000000000342e
[ 596.076424][ T1165] RBP: 00000000006ca018 R08: 0000000000000000 R09: 0000000000000000
[ 596.084523][ T1165] R10: 00000000ffffffff R11: 0000000000000246 R12: 0000000000401a30
[ 596.092604][ T1165] R13: 0000000000401ac0 R14: 0000000000000000 R15: 0000000000000000
[ 596.100713][ T1165] INFO: task io_uring-sq:6876 blocked for more than 143 seconds.
[ 596.108522][ T1165] Not tainted 5.9.0-rc3-next-20200903-syzkaller #0
[ 596.115570][ T1165] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 596.124330][ T1165] task:io_uring-sq state:D stack:31200 pid: 6876 ppid: 2 flags:0x00004000
[ 596.133706][ T1165] Call Trace:
[ 596.137100][ T1165] __schedule+0xea9/0x2230
[ 596.141544][ T1165] ? io_schedule_timeout+0x140/0x140
[ 596.146909][ T1165] ? _raw_spin_unlock_irqrestore+0x6f/0x90
[ 596.152759][ T1165] schedule+0xd0/0x2a0
[ 596.157920][ T1165] ? __do_sys_io_uring_enter+0x1940/0x1940
[ 596.163760][ T1165] schedule_preempt_disabled+0xf/0x20
[ 596.169220][ T1165] kthread+0x2ac/0x4a0
[ 596.173312][ T1165] ? __kthread_bind_mask+0xc0/0xc0
[ 596.178605][ T1165] ret_from_fork+0x1f/0x30
[ 596.183072][ T1165]
[ 596.183072][ T1165] Showing all locks held in the system:
[ 596.190909][ T1165] 1 lock held by khungtaskd/1165:
[ 596.195938][ T1165] #0: ffffffff89c67500 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260
[ 596.205913][ T1165] 2 locks held by in:imklog/6553:
[ 596.211007][ T1165] #0: ffff888099d06bb0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100
[ 596.220291][ T1165] #1: ffffffff89c67500 (rcu_read_lock){....}-{1:2}, at: is_bpf_text_address+0x0/0x160
[ 596.230201][ T1165]
[ 596.232538][ T1165] =============================================
[ 596.232538][ T1165]
[ 596.241008][ T1165] NMI backtrace for cpu 1
[ 596.245359][ T1165] CPU: 1 PID: 1165 Comm: khungtaskd Not tainted 5.9.0-rc3-next-20200903-syzkaller #0
[ 596.254800][ T1165] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 596.264849][ T1165] Call Trace:
[ 596.268247][ T1165] dump_stack+0x198/0x1fd
[ 596.272589][ T1165] nmi_cpu_backtrace.cold+0x44/0xd7
[ 596.277848][ T1165] ? lapic_can_unplug_cpu.cold+0x38/0x38
[ 596.283482][ T1165] nmi_trigger_cpumask_backtrace+0x1b3/0x223
[ 596.289541][ T1165] watchdog+0xd89/0xf30
[ 596.293704][ T1165] ? trace_sched_process_hang+0x2e0/0x2e0
[ 596.299420][ T1165] kthread+0x3b5/0x4a0
[ 596.303478][ T1165] ? __kthread_bind_mask+0xc0/0xc0
[ 596.308596][ T1165] ret_from_fork+0x1f/0x30
[ 596.313124][ T1165] Sending NMI from CPU 1 to CPUs 0:
[ 596.318976][ C0] NMI backtrace for cpu 0
[ 596.318984][ C0] CPU: 0 PID: 3905 Comm: systemd-journal Not tainted 5.9.0-rc3-next-20200903-syzkaller #0
[ 596.318991][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 596.318996][ C0] RIP: 0010:__lock_acquire+0xbf6/0x5570
[ 596.319008][ C0] Code: 31 d9 89 ce 29 ca 01 c1 c1 c6 10 89 cf 31 f2 89 d6 29 d0 01 ca c1 ce 0d 31 f0 29 c7 89 c6 01 d0 48 8b 54 24 30 c1 c6 04 31 fe <48> c1 e6 20 48 09 c6 48 c1 ea 03 48 b8 00 00 00 00 00 fc ff df 0f
[ 596.319012][ C0] RSP: 0018:ffffc90001627a58 EFLAGS: 00000082
[ 596.319021][ C0] RAX: 00000000b8d455d0 RBX: 00000000437cb121 RCX: 00000000d25d559e
[ 596.319027][ C0] RDX: ffff8880937b0dd8 RSI: 00000000e4925989 RDI: 00000000697e887f
[ 596.319033][ C0] RBP: ffff8880937b0db8 R08: 0000000000000000 R09: ffffffff8c6aba3f
[ 596.319039][ C0] R10: fffffbfff18d5747 R11: 0000000000000000 R12: 0000000000000000
[ 596.319044][ C0] R13: 0000000000000000 R14: ffff8880937b0480 R15: 0000000000000000
[ 596.319050][ C0] FS: 00007ff9560258c0(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
[ 596.319056][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 596.319061][ C0] CR2: 00007ff9533c9020 CR3: 000000009309d000 CR4: 00000000001506f0
[ 596.319067][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 596.319072][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 596.319076][ C0] Call Trace:
[ 596.319080][ C0] ? lockdep_hardirqs_on+0x53/0x100
[ 596.319085][ C0] ? devkmsg_poll+0x1cb/0x2d0
[ 596.319089][ C0] ? lockdep_hardirqs_on_prepare+0x530/0x530
[ 596.319093][ C0] ? ep_item_poll+0x17c/0x3e0
[ 596.319098][ C0] ? ep_eventpoll_poll+0x160/0x160
[ 596.319102][ C0] lock_acquire+0x1f3/0xae0
[ 596.319106][ C0] ? ep_scan_ready_list+0x262/0x7b0
[ 596.319110][ C0] ? lock_release+0x8f0/0x8f0
[ 596.319115][ C0] ? check_preemption_disabled+0x50/0x130
[ 596.319119][ C0] ? _raw_write_lock_irq+0xa4/0xd0
[ 596.319124][ C0] ? lockdep_hardirqs_off+0x96/0xd0
[ 596.319128][ C0] _raw_write_lock_irq+0x94/0xd0
[ 596.319132][ C0] ? ep_scan_ready_list+0x262/0x7b0
[ 596.319137][ C0] ? do_epoll_create+0x1c0/0x1c0
[ 596.319141][ C0] ep_scan_ready_list+0x262/0x7b0
[ 596.319145][ C0] ? ep_destroy_wakeup_source+0x150/0x150
[ 596.319150][ C0] do_epoll_wait+0xb48/0x10b0
[ 596.319154][ C0] ? ep_read_events_proc+0x440/0x440
[ 596.319158][ C0] ? lock_is_held_type+0xbb/0xf0
[ 596.319163][ C0] ? find_held_lock+0x2d/0x110
[ 596.319167][ C0] ? lock_is_held_type+0xbb/0xf0
[ 596.319171][ C0] __x64_sys_epoll_wait+0x93/0xf0
[ 596.319175][ C0] do_syscall_64+0x2d/0x70
[ 596.319179][ C0] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 596.319183][ C0] RIP: 0033:0x7ff9552ef2e3
[ 596.319194][ C0] Code: 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 83 3d 29 54 2b 00 00 75 13 49 89 ca b8 e8 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 34 c3 48 83 ec 08 e8 0b c2 00 00 48 89 04 24
[ 596.319199][ C0] RSP: 002b:00007ffc601de798 EFLAGS: 00000246 ORIG_RAX: 00000000000000e8
[ 596.319209][ C0] RAX: ffffffffffffffda RBX: 00005559004551e0 RCX: 00007ff9552ef2e3
[ 596.319214][ C0] RDX: 0000000000000013 RSI: 00007ffc601de7a0 RDI: 0000000000000008
[ 596.319220][ C0] RBP: 00007ffc601de990 R08: 0000555900457780 R09: 00007ffc601ee080
[ 596.319226][ C0] R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffc601de7a0
[ 596.319232][ C0] R13: 0000000000000001 R14: ffffffffffffffff R15: 0005ae87be6f15e3
[ 596.320394][ T1165] Kernel panic - not syncing: hung_task: blocked tasks
[ 596.657589][ T1165] CPU: 1 PID: 1165 Comm: khungtaskd Not tainted 5.9.0-rc3-next-20200903-syzkaller #0
[ 596.667027][ T1165] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 596.677071][ T1165] Call Trace:
[ 596.680355][ T1165] dump_stack+0x198/0x1fd
[ 596.684733][ T1165] panic+0x347/0x7c0
[ 596.688656][ T1165] ? __warn_printk+0xf3/0xf3
[ 596.693234][ T1165] ? lapic_can_unplug_cpu.cold+0x38/0x38
[ 596.698867][ T1165] ? preempt_schedule_thunk+0x16/0x18
[ 596.704341][ T1165] ? watchdog.cold+0x22d/0x24b
[ 596.709230][ T1165] ? watchdog+0xc59/0xf30
[ 596.713549][ T1165] watchdog.cold+0x23e/0x24b
[ 596.718172][ T1165] ? trace_sched_process_hang+0x2e0/0x2e0
[ 596.723884][ T1165] kthread+0x3b5/0x4a0
[ 596.727963][ T1165] ? __kthread_bind_mask+0xc0/0xc0
[ 596.733069][ T1165] ret_from_fork+0x1f/0x30
[ 596.738702][ T1165] Kernel Offset: disabled
[ 596.743065][ T1165] Rebooting in 86400 seconds..