INFO: task syz-executor.1:31739 blocked for more than 143 seconds.
      Not tainted 5.2.0-rc6+ #38
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.1  D28128 31739   8863 0x00004004
Call Trace:
 context_switch kernel/sched/core.c:2818 [inline]
 __schedule+0x7cb/0x1560 kernel/sched/core.c:3445
 schedule+0xa8/0x260 kernel/sched/core.c:3509
 schedule_timeout+0x717/0xc50 kernel/time/timer.c:1783
 do_wait_for_common kernel/sched/completion.c:83 [inline]
 __wait_for_common kernel/sched/completion.c:104 [inline]
 wait_for_common kernel/sched/completion.c:115 [inline]
 wait_for_completion+0x29c/0x440 kernel/sched/completion.c:136
 kthread_stop+0x10b/0x6c0 kernel/kthread.c:559
 io_sq_thread_stop fs/io_uring.c:2252 [inline]
 io_finish_async+0x73/0x140 fs/io_uring.c:2259
 io_ring_ctx_free fs/io_uring.c:2770 [inline]
 io_ring_ctx_wait_and_kill+0x133/0x600 fs/io_uring.c:2834
 io_uring_release+0x42/0x50 fs/io_uring.c:2842
 __fput+0x2ff/0x890 fs/file_table.c:280
 ____fput+0x16/0x20 fs/file_table.c:313
 task_work_run+0x145/0x1c0 kernel/task_work.c:113
 tracehook_notify_resume include/linux/tracehook.h:185 [inline]
 exit_to_usermode_loop+0x273/0x2c0 arch/x86/entry/common.c:168
 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:279 [inline]
 do_syscall_64+0x58e/0x680 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:00007ffde4663130 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000004 RCX: 0000000000413201
RDX: 0000000000000000 RSI: 0000000000000081 RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffffffffffff
R10: 00000000007611b0 R11: 0000000000000293 R12: 00000000007611c0
R13: 0000000000000001 R14: 0000000000000000 R15: ffffffffffffffff

Showing all locks held in the system:
1 lock held by khungtaskd/1043:
 #0: 00000000cc9d0d50 (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x27e kernel/locking/lockdep.c:5149
1 lock held by rsyslogd/8694:
 #0: 00000000658c22e5 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 fs/file.c:801
2 locks held by getty/8816:
 #0: 0000000062370228 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
 #1: 00000000f16d465c (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156
2 locks held by getty/8817:
 #0: 00000000d574da72 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
 #1: 00000000dba1c0bc (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156
2 locks held by getty/8818:
 #0: 00000000e7b741b1 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
 #1: 000000000cb3cc76 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156
2 locks held by getty/8819:
 #0: 00000000ad4eb177 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
 #1: 00000000cefbb59c (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156
2 locks held by getty/8820:
 #0: 000000002d3bf6dc (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
 #1: 00000000274d693b (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156
2 locks held by getty/8821:
 #0: 0000000029164e66 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
 #1: 00000000b9cd98de (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156
2 locks held by getty/8822:
 #0: 00000000ee43695e (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
 #1: 000000001f9e467a (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156

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

NMI backtrace for cpu 0
CPU: 0 PID: 1043 Comm: khungtaskd Not tainted 5.2.0-rc6+ #38
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+0x172/0x1f0 lib/dump_stack.c:113
 nmi_cpu_backtrace.cold+0x63/0xa4 lib/nmi_backtrace.c:101
 nmi_trigger_cpumask_backtrace+0x1be/0x236 lib/nmi_backtrace.c:62
 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38
 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:205 [inline]
 watchdog+0x9b7/0xec0 kernel/hung_task.c:289
 kthread+0x354/0x420 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+ #38
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:kasan_check_write+0x1/0x20 mm/kasan/common.c:100
Code: 90 90 90 90 90 90 90 90 90 55 89 f6 31 d2 48 89 e5 48 8b 4d 08 e8 af 23 00 00 5d c3 0f 1f 00 66 2e 0f 1f 84 00 00 00 00 00 55 <89> f6 ba 01 00 00 00 48 89 e5 48 8b 4d 08 e8 8c 23 00 00 5d c3 66
RSP: 0018:ffff8880ae909a40 EFLAGS: 00000046
RAX: ffffed1015d06a99 RBX: 1ffff11015d2134b RCX: ffffffff81586d9c
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffff8880ae909a78
RBP: ffff8880ae909ae0 R08: 1ffff11015d06a98 R09: ffffed1015d06a99
R10: ffffed1015d06a98 R11: ffff8880ae8354c3 R12: ffff8880ae8354c0
R13: ffff8880ae8354c8 R14: ffff8880ae8354d0 R15: ffff8880ae909ab8
FS:  0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffff600400 CR3: 000000008c71f000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:117 [inline]
 _raw_spin_lock_irqsave+0x9d/0xcd kernel/locking/spinlock.c:159
 rq_lock_irqsave kernel/sched/sched.h:1152 [inline]
 load_balance+0x822/0x2660 kernel/sched/fair.c:9094
 rebalance_domains+0x683/0xbc0 kernel/sched/fair.c:9488
 _nohz_idle_balance+0x3e2/0x4d0 kernel/sched/fair.c:9902
 nohz_idle_balance kernel/sched/fair.c:9948 [inline]
 run_rebalance_domains+0x1d2/0x2e0 kernel/sched/fair.c:10131
 __do_softirq+0x25c/0x94c kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:373 [inline]
 irq_exit+0x180/0x1d0 kernel/softirq.c:413
 scheduler_ipi+0x3ac/0x5b0 kernel/sched/core.c:1820
 smp_reschedule_interrupt+0x78/0x460 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: ff ff 48 89 df e8 82 2e 8c fa eb 82 e9 07 00 00 00 0f 00 2d 64 ad 4a 00 f4 c3 66 90 e9 07 00 00 00 0f 00 2d 54 ad 4a 00 fb f4 <c3> 90 55 48 89 e5 41 57 41 56 41 55 41 54 53 e8 6e 90 41 fa e8 39
RSP: 0018:ffff8880a98dfd78 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff02
RAX: 1ffffffff1164e89 RBX: ffff8880a98c6340 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: 0000000000000006 RDI: ffff8880a98c6bbc
RBP: ffff8880a98dfda8 R08: ffff8880a98c6340 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001
R13: ffffffff88b27438 R14: 0000000000000001 R15: 0000000000000000
 arch_cpu_idle+0xa/0x10 arch/x86/kernel/process.c:571
 default_idle_call+0x36/0x90 kernel/sched/idle.c:94
 cpuidle_idle_call kernel/sched/idle.c:154 [inline]
 do_idle+0x377/0x560 kernel/sched/idle.c:263
 cpu_startup_entry+0x1b/0x20 kernel/sched/idle.c:354
 start_secondary+0x34e/0x4c0 arch/x86/kernel/smpboot.c:265
 secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:243