INFO: task syz-executor.1:21678 blocked for more than 143 seconds.
      Not tainted 5.2.0-rc6+ #11
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.1  D25760 21678   8240 0x00004004
Call Trace:
 context_switch kernel/sched/core.c:2818 [inline]
 __schedule+0x658/0x9e0 kernel/sched/core.c:3445
 schedule+0x131/0x1d0 kernel/sched/core.c:3509
 schedule_timeout+0x9a/0x2b0 kernel/time/timer.c:1783
 do_wait_for_common+0x35e/0x5a0 kernel/sched/completion.c:83
 __wait_for_common kernel/sched/completion.c:104 [inline]
 wait_for_common kernel/sched/completion.c:115 [inline]
 wait_for_completion+0x47/0x60 kernel/sched/completion.c:136
 kthread_stop+0xb4/0x150 kernel/kthread.c:559
 io_sq_thread_stop fs/io_uring.c:2252 [inline]
 io_finish_async fs/io_uring.c:2259 [inline]
 io_ring_ctx_free fs/io_uring.c:2770 [inline]
 io_ring_ctx_wait_and_kill+0x268/0x880 fs/io_uring.c:2834
 io_uring_release+0x5d/0x70 fs/io_uring.c:2842
 __fput+0x2e4/0x740 fs/file_table.c:280
 ____fput+0x15/0x20 fs/file_table.c:313
 task_work_run+0x17e/0x1b0 kernel/task_work.c:113
 tracehook_notify_resume include/linux/tracehook.h:185 [inline]
 exit_to_usermode_loop arch/x86/entry/common.c:168 [inline]
 prepare_exit_to_usermode+0x402/0x4f0 arch/x86/entry/common.c:199
 syscall_return_slowpath+0x110/0x440 arch/x86/entry/common.c:279
 do_syscall_64+0x126/0x140 arch/x86/entry/common.c:304
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x413201
Code: 48 89 54 24 10 48 85 d2 0f 86 cd 00 00 00 48 89 d3 31 d2 48 f7 f3 48 c7 41 30 00 00 00 00 48 c7 41 40 ff ff ff ff 48 89 41 38 <48> c7 41 48 00 00 00 00 48 c7 41 50 00 00 00 00 48 8b 41 38 48 89
RSP: 002b:00007ffef1f87b90 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000413201
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 0000000000000000 R08: ffffffffffffffff R09: ffffffffffffffff
R10: 00007ffef1f87c70 R11: 0000000000000293 R12: 0000000000760588
R13: 00000000001e8732 R14: 00000000001e875f R15: ffffffffffffffff

Showing all locks held in the system:
1 lock held by khungtaskd/1044:
 #0: 00000000ad4259dc (rcu_read_lock){....}, at: rcu_lock_acquire+0x4/0x30 include/linux/rcupdate.h:207
2 locks held by getty/8198:
 #0: 00000000a3e6387b (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:272
 #1: 00000000296ebd60 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x2ee/0x1c80 drivers/tty/n_tty.c:2156
2 locks held by getty/8199:
 #0: 000000006665b5ec (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:272
 #1: 0000000063bae2a1 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x2ee/0x1c80 drivers/tty/n_tty.c:2156
2 locks held by getty/8200:
 #0: 00000000fcdaa4ed (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:272
 #1: 000000000fca44f2 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x2ee/0x1c80 drivers/tty/n_tty.c:2156
2 locks held by getty/8201:
 #0: 0000000050db3ea9 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:272
 #1: 000000007d80fd2e (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x2ee/0x1c80 drivers/tty/n_tty.c:2156
2 locks held by getty/8202:
 #0: 0000000057a62614 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:272
 #1: 000000006a99b687 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x2ee/0x1c80 drivers/tty/n_tty.c:2156
2 locks held by getty/8203:
 #0: 0000000050513ada (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:272
 #1: 00000000c995db64 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x2ee/0x1c80 drivers/tty/n_tty.c:2156
2 locks held by getty/8204:
 #0: 00000000c410d916 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:272
 #1: 00000000947f2ace (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x2ee/0x1c80 drivers/tty/n_tty.c:2156

=============================================

NMI backtrace for cpu 0
CPU: 0 PID: 1044 Comm: khungtaskd Not tainted 5.2.0-rc6+ #11
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1d8/0x2f8 lib/dump_stack.c:113
 nmi_cpu_backtrace+0x89/0x160 lib/nmi_backtrace.c:101
 nmi_trigger_cpumask_backtrace+0x125/0x230 lib/nmi_backtrace.c:62
 arch_trigger_cpumask_backtrace+0x10/0x20 arch/x86/kernel/apic/hw_nmi.c:38
 trigger_all_cpu_backtrace+0x17/0x20 include/linux/nmi.h:146
 check_hung_uninterruptible_tasks kernel/hung_task.c:205 [inline]
 watchdog+0xbb9/0xbd0 kernel/hung_task.c:289
 kthread+0x325/0x350 kernel/kthread.c:255
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.2.0-rc6+ #11
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:div_u64_rem include/linux/math64.h:27 [inline]
RIP: 0010:div_u64 include/linux/math64.h:126 [inline]
RIP: 0010:___update_load_avg kernel/sched/pelt.c:233 [inline]
RIP: 0010:update_irq_load_avg+0x775/0xc60 kernel/sched/pelt.c:392
Code: 48 89 f8 48 c1 e8 03 42 80 3c 00 00 74 0f e8 12 c2 55 00 49 b8 00 00 00 00 00 fc ff df 49 8b 84 24 d0 0b 00 00 31 d2 49 f7 f5 <48> 89 c3 49 8d bc 24 e8 0b 00 00 48 89 f8 48 c1 e8 03 42 80 3c 00
RSP: 0018:ffff8880aeb09bc0 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 1ffffffff1236208
RDX: 00000000000001ec RSI: 0000000000000000 RDI: ffff8880aeb35cd0
RBP: ffff8880aeb09c20 R08: dffffc0000000000 R09: 00000000000001e3
R10: ffffffff891b1050 R11: ffffffff891b1043 R12: ffff8880aeb35100
R13: 000000000000b7d2 R14: 0000000000000001 R15: 000000000000b7d2
FS:  0000000000000000(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000002099000 CR3: 00000000991d6000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 update_rq_clock_task kernel/sched/core.c:183 [inline]
 update_rq_clock+0x20c/0x430 kernel/sched/core.c:207
 update_blocked_averages+0x77/0xb40 kernel/sched/fair.c:7753
 _nohz_idle_balance+0x17d/0x6e0 kernel/sched/fair.c:9897
 nohz_idle_balance kernel/sched/fair.c:9948 [inline]
 run_rebalance_domains+0x165/0x290 kernel/sched/fair.c:10131
 __do_softirq+0x340/0x7b0 arch/x86/include/asm/paravirt.h:777
 invoke_softirq kernel/softirq.c:373 [inline]
 irq_exit+0x21a/0x230 kernel/softirq.c:413
 scheduler_ipi+0x3ca/0x420 kernel/sched/core.c:1820
 smp_reschedule_interrupt+0x7a/0xa0 arch/x86/kernel/smp.c:276
 reschedule_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:830
 </IRQ>
RIP: 0010:native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:61
Code: d9 80 e1 07 80 c1 03 38 c1 0f 8c 79 fe ff ff 48 89 df e8 85 92 16 fa e9 6c fe ff ff e9 07 00 00 00 0f 00 2d 26 3a 4a 00 fb f4 <c3> 90 e9 07 00 00 00 0f 00 2d 16 3a 4a 00 f4 c3 90 90 55 48 89 e5
RSP: 0018:ffff8880a98d7d58 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff02
RAX: 1ffffffff1154c75 RBX: dffffc0000000000 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: ffffffff812c2a2a RDI: ffff8880a98c6b68
RBP: ffff8880a98d7d60 R08: ffff8880a98c6b80 R09: ffffed1015d66bf8
R10: ffffed1015d66bf8 R11: 1ffff11015d66bf7 R12: 1ffffffff1154c73
R13: ffff8880a98c6340 R14: 0000000000000001 R15: 1ffff11015318c68
 arch_cpu_idle+0xa/0x10 arch/x86/kernel/process.c:571
 default_idle_call kernel/sched/idle.c:94 [inline]
 cpuidle_idle_call kernel/sched/idle.c:154 [inline]
 do_idle+0x18a/0x760 kernel/sched/idle.c:263
 cpu_startup_entry+0x25/0x30 kernel/sched/idle.c:354
 start_secondary+0x425/0x4c0 arch/x86/kernel/smpboot.c:265
 secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:243