__loop_clr_fd: partition scan of loop3 failed (rc=-22)
=====================================================
WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected
5.0.0-rc3+ #43 Not tainted
-----------------------------------------------------
syz-executor2/8954 [HC0[0]:SC0[0]:HE0:SE1] is trying to acquire:
0000000028bc207f (&fiq->waitq){+.+.}, at: spin_lock include/linux/spinlock.h:329 [inline]
0000000028bc207f (&fiq->waitq){+.+.}, at: aio_poll+0x7b9/0x14e0 fs/aio.c:1772

and this task is already holding:
00000000632d8216 (&(&ctx->ctx_lock)->rlock){..-.}, at: spin_lock_irq include/linux/spinlock.h:354 [inline]
00000000632d8216 (&(&ctx->ctx_lock)->rlock){..-.}, at: aio_poll+0x790/0x14e0 fs/aio.c:1771
which would create a new lock dependency:
 (&(&ctx->ctx_lock)->rlock){..-.} -> (&fiq->waitq){+.+.}

but this new dependency connects a SOFTIRQ-irq-safe lock:
 (&(&ctx->ctx_lock)->rlock){..-.}

... which became SOFTIRQ-irq-safe at:
  lock_acquire+0x1db/0x570 kernel/locking/lockdep.c:3841
  __raw_spin_lock_irq include/linux/spinlock_api_smp.h:128 [inline]
  _raw_spin_lock_irq+0x60/0x80 kernel/locking/spinlock.c:160
  spin_lock_irq include/linux/spinlock.h:354 [inline]
  free_ioctx_users+0xa7/0x6e0 fs/aio.c:610
  percpu_ref_put_many include/linux/percpu-refcount.h:285 [inline]
  percpu_ref_put include/linux/percpu-refcount.h:301 [inline]
  percpu_ref_call_confirm_rcu lib/percpu-refcount.c:123 [inline]
  percpu_ref_switch_to_atomic_rcu+0x50c/0x6b0 lib/percpu-refcount.c:158
  __rcu_reclaim kernel/rcu/rcu.h:240 [inline]
  rcu_do_batch kernel/rcu/tree.c:2452 [inline]
  invoke_rcu_callbacks kernel/rcu/tree.c:2773 [inline]
  rcu_process_callbacks+0xc4a/0x1680 kernel/rcu/tree.c:2754
  __do_softirq+0x30b/0xb11 kernel/softirq.c:292
  invoke_softirq kernel/softirq.c:373 [inline]
  irq_exit+0x180/0x1d0 kernel/softirq.c:413
  exiting_irq arch/x86/include/asm/apic.h:536 [inline]
  smp_apic_timer_interrupt+0x1b7/0x760 arch/x86/kernel/apic/apic.c:1062
  apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:807
  arch_local_irq_enable arch/x86/include/asm/paravirt.h:776 [inline]
  __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:168 [inline]
  _raw_spin_unlock_irq+0x54/0x90 kernel/locking/spinlock.c:192
  finish_lock_switch kernel/sched/core.c:2581 [inline]
  finish_task_switch+0x1e9/0xac0 kernel/sched/core.c:2681
  context_switch kernel/sched/core.c:2834 [inline]
  __schedule+0x89f/0x1e60 kernel/sched/core.c:3472
  preempt_schedule_irq+0xb5/0x140 kernel/sched/core.c:3699
  retint_kernel+0x1b/0x2d
  __read_once_size include/linux/compiler.h:193 [inline]
  update_stack_state+0x4ce/0x680 arch/x86/kernel/unwind_frame.c:270
  unwind_next_frame.part.0+0x1ae/0xa90 arch/x86/kernel/unwind_frame.c:329
  unwind_next_frame+0x3b/0x50 arch/x86/kernel/unwind_frame.c:287
  __save_stack_trace+0x7a/0xf0 arch/x86/kernel/stacktrace.c:44
  save_stack_trace+0x1a/0x20 arch/x86/kernel/stacktrace.c:60
  save_stack+0x45/0xd0 mm/kasan/common.c:73
  set_track mm/kasan/common.c:85 [inline]
  __kasan_kmalloc mm/kasan/common.c:496 [inline]
  __kasan_kmalloc.constprop.0+0xcf/0xe0 mm/kasan/common.c:469
  kasan_kmalloc mm/kasan/common.c:504 [inline]
  kasan_slab_alloc+0xf/0x20 mm/kasan/common.c:411
  kmem_cache_alloc_node+0x144/0x710 mm/slab.c:3633
  __alloc_skb+0xf4/0x730 net/core/skbuff.c:196
  alloc_skb_fclone include/linux/skbuff.h:1053 [inline]
  sk_stream_alloc_skb+0x147/0x9b0 net/ipv4/tcp.c:874
  tcp_sendmsg_locked+0xe6e/0x3e80 net/ipv4/tcp.c:1286
  tcp_sendmsg+0x30/0x50 net/ipv4/tcp.c:1443
  inet_sendmsg+0x1af/0x740 net/ipv4/af_inet.c:798
  sock_sendmsg_nosec net/socket.c:621 [inline]
  sock_sendmsg+0xdd/0x130 net/socket.c:631
  __sys_sendto+0x387/0x5f0 net/socket.c:1788
  __do_sys_sendto net/socket.c:1800 [inline]
  __se_sys_sendto net/socket.c:1796 [inline]
  __x64_sys_sendto+0xe1/0x1a0 net/socket.c:1796
  do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290
  entry_SYSCALL_64_after_hwframe+0x49/0xbe

to a SOFTIRQ-irq-unsafe lock:
 (&fiq->waitq){+.+.}

... which became SOFTIRQ-irq-unsafe at:
...
  lock_acquire+0x1db/0x570 kernel/locking/lockdep.c:3841
  __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
  _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:144
  spin_lock include/linux/spinlock.h:329 [inline]
  flush_bg_queue+0x28c/0x570 fs/fuse/dev.c:413
  fuse_request_queue_background+0x360/0x640 fs/fuse/dev.c:652
  fuse_request_send_background+0x58/0x120 fs/fuse/dev.c:663
  cuse_send_init fs/fuse/cuse.c:458 [inline]
  cuse_channel_open+0x612/0x96a fs/fuse/cuse.c:518
  misc_open+0x398/0x4c0 drivers/char/misc.c:141
  chrdev_open+0x270/0x7c0 fs/char_dev.c:417
  do_dentry_open+0x48a/0x1210 fs/open.c:771
  vfs_open+0xa0/0xd0 fs/open.c:880
  do_last fs/namei.c:3418 [inline]
  path_openat+0x144f/0x5650 fs/namei.c:3534
  do_filp_open+0x26f/0x370 fs/namei.c:3564
  do_sys_open+0x59a/0x7c0 fs/open.c:1063
  __do_sys_openat fs/open.c:1090 [inline]
  __se_sys_openat fs/open.c:1084 [inline]
  __x64_sys_openat+0x9d/0x100 fs/open.c:1084
  do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290
  entry_SYSCALL_64_after_hwframe+0x49/0xbe

other info that might help us debug this:

 Possible interrupt unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&fiq->waitq);
                               local_irq_disable();
                               lock(&(&ctx->ctx_lock)->rlock);
                               lock(&fiq->waitq);
  <Interrupt>
    lock(&(&ctx->ctx_lock)->rlock);

 *** DEADLOCK ***

1 lock held by syz-executor2/8954:
 #0: 00000000632d8216 (&(&ctx->ctx_lock)->rlock){..-.}, at: spin_lock_irq include/linux/spinlock.h:354 [inline]
 #0: 00000000632d8216 (&(&ctx->ctx_lock)->rlock){..-.}, at: aio_poll+0x790/0x14e0 fs/aio.c:1771

the dependencies between SOFTIRQ-irq-safe lock and the holding lock:
-> (&(&ctx->ctx_lock)->rlock){..-.} {
   IN-SOFTIRQ-W at:
                    lock_acquire+0x1db/0x570 kernel/locking/lockdep.c:3841
                    __raw_spin_lock_irq include/linux/spinlock_api_smp.h:128 [inline]
                    _raw_spin_lock_irq+0x60/0x80 kernel/locking/spinlock.c:160
                    spin_lock_irq include/linux/spinlock.h:354 [inline]
                    free_ioctx_users+0xa7/0x6e0 fs/aio.c:610
                    percpu_ref_put_many include/linux/percpu-refcount.h:285 [inline]
                    percpu_ref_put include/linux/percpu-refcount.h:301 [inline]
                    percpu_ref_call_confirm_rcu lib/percpu-refcount.c:123 [inline]
                    percpu_ref_switch_to_atomic_rcu+0x50c/0x6b0 lib/percpu-refcount.c:158
                    __rcu_reclaim kernel/rcu/rcu.h:240 [inline]
                    rcu_do_batch kernel/rcu/tree.c:2452 [inline]
                    invoke_rcu_callbacks kernel/rcu/tree.c:2773 [inline]
                    rcu_process_callbacks+0xc4a/0x1680 kernel/rcu/tree.c:2754
                    __do_softirq+0x30b/0xb11 kernel/softirq.c:292
                    invoke_softirq kernel/softirq.c:373 [inline]
                    irq_exit+0x180/0x1d0 kernel/softirq.c:413
kobject: 'kvm' (0000000075e4c6d0): kobject_uevent_env
                    exiting_irq arch/x86/include/asm/apic.h:536 [inline]
                    smp_apic_timer_interrupt+0x1b7/0x760 arch/x86/kernel/apic/apic.c:1062
                    apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:807
                    arch_local_irq_enable arch/x86/include/asm/paravirt.h:776 [inline]
                    __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:168 [inline]
                    _raw_spin_unlock_irq+0x54/0x90 kernel/locking/spinlock.c:192
                    finish_lock_switch kernel/sched/core.c:2581 [inline]
                    finish_task_switch+0x1e9/0xac0 kernel/sched/core.c:2681
kobject: 'kvm' (0000000075e4c6d0): fill_kobj_path: path = '/devices/virtual/misc/kvm'
                    context_switch kernel/sched/core.c:2834 [inline]
                    __schedule+0x89f/0x1e60 kernel/sched/core.c:3472
                    preempt_schedule_irq+0xb5/0x140 kernel/sched/core.c:3699
                    retint_kernel+0x1b/0x2d
                    __read_once_size include/linux/compiler.h:193 [inline]
                    update_stack_state+0x4ce/0x680 arch/x86/kernel/unwind_frame.c:270
                    unwind_next_frame.part.0+0x1ae/0xa90 arch/x86/kernel/unwind_frame.c:329
kobject: 'kvm' (0000000075e4c6d0): kobject_uevent_env
                    unwind_next_frame+0x3b/0x50 arch/x86/kernel/unwind_frame.c:287
                    __save_stack_trace+0x7a/0xf0 arch/x86/kernel/stacktrace.c:44
kobject: 'kvm' (0000000075e4c6d0): fill_kobj_path: path = '/devices/virtual/misc/kvm'
                    save_stack_trace+0x1a/0x20 arch/x86/kernel/stacktrace.c:60
                    save_stack+0x45/0xd0 mm/kasan/common.c:73
                    set_track mm/kasan/common.c:85 [inline]
                    __kasan_kmalloc mm/kasan/common.c:496 [inline]
                    __kasan_kmalloc.constprop.0+0xcf/0xe0 mm/kasan/common.c:469
                    kasan_kmalloc mm/kasan/common.c:504 [inline]
                    kasan_slab_alloc+0xf/0x20 mm/kasan/common.c:411
                    kmem_cache_alloc_node+0x144/0x710 mm/slab.c:3633
                    __alloc_skb+0xf4/0x730 net/core/skbuff.c:196
                    alloc_skb_fclone include/linux/skbuff.h:1053 [inline]
                    sk_stream_alloc_skb+0x147/0x9b0 net/ipv4/tcp.c:874
                    tcp_sendmsg_locked+0xe6e/0x3e80 net/ipv4/tcp.c:1286
                    tcp_sendmsg+0x30/0x50 net/ipv4/tcp.c:1443
                    inet_sendmsg+0x1af/0x740 net/ipv4/af_inet.c:798
                    sock_sendmsg_nosec net/socket.c:621 [inline]
                    sock_sendmsg+0xdd/0x130 net/socket.c:631
                    __sys_sendto+0x387/0x5f0 net/socket.c:1788
                    __do_sys_sendto net/socket.c:1800 [inline]
                    __se_sys_sendto net/socket.c:1796 [inline]
                    __x64_sys_sendto+0xe1/0x1a0 net/socket.c:1796
                    do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290
                    entry_SYSCALL_64_after_hwframe+0x49/0xbe
   INITIAL USE at:
                   lock_acquire+0x1db/0x570 kernel/locking/lockdep.c:3841
                   __raw_spin_lock_irq include/linux/spinlock_api_smp.h:128 [inline]
                   _raw_spin_lock_irq+0x60/0x80 kernel/locking/spinlock.c:160
                   spin_lock_irq include/linux/spinlock.h:354 [inline]
                   free_ioctx_users+0xa7/0x6e0 fs/aio.c:610
                   percpu_ref_put_many include/linux/percpu-refcount.h:285 [inline]
                   percpu_ref_put include/linux/percpu-refcount.h:301 [inline]
                   percpu_ref_call_confirm_rcu lib/percpu-refcount.c:123 [inline]
                   percpu_ref_switch_to_atomic_rcu+0x50c/0x6b0 lib/percpu-refcount.c:158
                   __rcu_reclaim kernel/rcu/rcu.h:240 [inline]
                   rcu_do_batch kernel/rcu/tree.c:2452 [inline]
                   invoke_rcu_callbacks kernel/rcu/tree.c:2773 [inline]
                   rcu_process_callbacks+0xc4a/0x1680 kernel/rcu/tree.c:2754
                   __do_softirq+0x30b/0xb11 kernel/softirq.c:292
                   invoke_softirq kernel/softirq.c:373 [inline]
                   irq_exit+0x180/0x1d0 kernel/softirq.c:413
                   exiting_irq arch/x86/include/asm/apic.h:536 [inline]
                   smp_apic_timer_interrupt+0x1b7/0x760 arch/x86/kernel/apic/apic.c:1062
                   apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:807
                   arch_local_irq_enable arch/x86/include/asm/paravirt.h:776 [inline]
                   __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:168 [inline]
                   _raw_spin_unlock_irq+0x54/0x90 kernel/locking/spinlock.c:192
                   finish_lock_switch kernel/sched/core.c:2581 [inline]
                   finish_task_switch+0x1e9/0xac0 kernel/sched/core.c:2681
                   context_switch kernel/sched/core.c:2834 [inline]
                   __schedule+0x89f/0x1e60 kernel/sched/core.c:3472
                   preempt_schedule_irq+0xb5/0x140 kernel/sched/core.c:3699
                   retint_kernel+0x1b/0x2d
                   __read_once_size include/linux/compiler.h:193 [inline]
                   update_stack_state+0x4ce/0x680 arch/x86/kernel/unwind_frame.c:270
                   unwind_next_frame.part.0+0x1ae/0xa90 arch/x86/kernel/unwind_frame.c:329
                   unwind_next_frame+0x3b/0x50 arch/x86/kernel/unwind_frame.c:287
                   __save_stack_trace+0x7a/0xf0 arch/x86/kernel/stacktrace.c:44
                   save_stack_trace+0x1a/0x20 arch/x86/kernel/stacktrace.c:60
                   save_stack+0x45/0xd0 mm/kasan/common.c:73
                   set_track mm/kasan/common.c:85 [inline]
                   __kasan_kmalloc mm/kasan/common.c:496 [inline]
                   __kasan_kmalloc.constprop.0+0xcf/0xe0 mm/kasan/common.c:469
                   kasan_kmalloc mm/kasan/common.c:504 [inline]
                   kasan_slab_alloc+0xf/0x20 mm/kasan/common.c:411
                   kmem_cache_alloc_node+0x144/0x710 mm/slab.c:3633
                   __alloc_skb+0xf4/0x730 net/core/skbuff.c:196
                   alloc_skb_fclone include/linux/skbuff.h:1053 [inline]
                   sk_stream_alloc_skb+0x147/0x9b0 net/ipv4/tcp.c:874
                   tcp_sendmsg_locked+0xe6e/0x3e80 net/ipv4/tcp.c:1286
                   tcp_sendmsg+0x30/0x50 net/ipv4/tcp.c:1443
                   inet_sendmsg+0x1af/0x740 net/ipv4/af_inet.c:798
                   sock_sendmsg_nosec net/socket.c:621 [inline]
                   sock_sendmsg+0xdd/0x130 net/socket.c:631
                   __sys_sendto+0x387/0x5f0 net/socket.c:1788
                   __do_sys_sendto net/socket.c:1800 [inline]
                   __se_sys_sendto net/socket.c:1796 [inline]
                   __x64_sys_sendto+0xe1/0x1a0 net/socket.c:1796
                   do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290
                   entry_SYSCALL_64_after_hwframe+0x49/0xbe
 }
 ... key      at: [<ffffffff8b58d060>] __key.51948+0x0/0x40
 ... acquired at:
   lock_acquire+0x1db/0x570 kernel/locking/lockdep.c:3841
   __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
   _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:144
   spin_lock include/linux/spinlock.h:329 [inline]
   aio_poll+0x7b9/0x14e0 fs/aio.c:1772
   __io_submit_one fs/aio.c:1875 [inline]
   io_submit_one+0xc39/0x1050 fs/aio.c:1908
   __do_sys_io_submit fs/aio.c:1953 [inline]
   __se_sys_io_submit fs/aio.c:1923 [inline]
   __x64_sys_io_submit+0x1c4/0x5d0 fs/aio.c:1923
   do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290
   entry_SYSCALL_64_after_hwframe+0x49/0xbe


the dependencies between the lock to be acquired
 and SOFTIRQ-irq-unsafe lock:
-> (&fiq->waitq){+.+.} {
   HARDIRQ-ON-W at:
                    lock_acquire+0x1db/0x570 kernel/locking/lockdep.c:3841
                    __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
                    _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:144
                    spin_lock include/linux/spinlock.h:329 [inline]
                    flush_bg_queue+0x28c/0x570 fs/fuse/dev.c:413
                    fuse_request_queue_background+0x360/0x640 fs/fuse/dev.c:652
                    fuse_request_send_background+0x58/0x120 fs/fuse/dev.c:663
                    cuse_send_init fs/fuse/cuse.c:458 [inline]
                    cuse_channel_open+0x612/0x96a fs/fuse/cuse.c:518
                    misc_open+0x398/0x4c0 drivers/char/misc.c:141
                    chrdev_open+0x270/0x7c0 fs/char_dev.c:417
                    do_dentry_open+0x48a/0x1210 fs/open.c:771
                    vfs_open+0xa0/0xd0 fs/open.c:880
                    do_last fs/namei.c:3418 [inline]
                    path_openat+0x144f/0x5650 fs/namei.c:3534
                    do_filp_open+0x26f/0x370 fs/namei.c:3564
                    do_sys_open+0x59a/0x7c0 fs/open.c:1063
                    __do_sys_openat fs/open.c:1090 [inline]
                    __se_sys_openat fs/open.c:1084 [inline]
                    __x64_sys_openat+0x9d/0x100 fs/open.c:1084
                    do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290
                    entry_SYSCALL_64_after_hwframe+0x49/0xbe
   SOFTIRQ-ON-W at:
                    lock_acquire+0x1db/0x570 kernel/locking/lockdep.c:3841
                    __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
                    _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:144
                    spin_lock include/linux/spinlock.h:329 [inline]
                    flush_bg_queue+0x28c/0x570 fs/fuse/dev.c:413
                    fuse_request_queue_background+0x360/0x640 fs/fuse/dev.c:652
                    fuse_request_send_background+0x58/0x120 fs/fuse/dev.c:663
                    cuse_send_init fs/fuse/cuse.c:458 [inline]
                    cuse_channel_open+0x612/0x96a fs/fuse/cuse.c:518
                    misc_open+0x398/0x4c0 drivers/char/misc.c:141
                    chrdev_open+0x270/0x7c0 fs/char_dev.c:417
                    do_dentry_open+0x48a/0x1210 fs/open.c:771
                    vfs_open+0xa0/0xd0 fs/open.c:880
                    do_last fs/namei.c:3418 [inline]
                    path_openat+0x144f/0x5650 fs/namei.c:3534
                    do_filp_open+0x26f/0x370 fs/namei.c:3564
                    do_sys_open+0x59a/0x7c0 fs/open.c:1063
                    __do_sys_openat fs/open.c:1090 [inline]
                    __se_sys_openat fs/open.c:1084 [inline]
                    __x64_sys_openat+0x9d/0x100 fs/open.c:1084
                    do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290
                    entry_SYSCALL_64_after_hwframe+0x49/0xbe
   INITIAL USE at:
                   lock_acquire+0x1db/0x570 kernel/locking/lockdep.c:3841
                   __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
                   _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:144
                   spin_lock include/linux/spinlock.h:329 [inline]
                   flush_bg_queue+0x28c/0x570 fs/fuse/dev.c:413
                   fuse_request_queue_background+0x360/0x640 fs/fuse/dev.c:652
                   fuse_request_send_background+0x58/0x120 fs/fuse/dev.c:663
                   cuse_send_init fs/fuse/cuse.c:458 [inline]
                   cuse_channel_open+0x612/0x96a fs/fuse/cuse.c:518
                   misc_open+0x398/0x4c0 drivers/char/misc.c:141
                   chrdev_open+0x270/0x7c0 fs/char_dev.c:417
                   do_dentry_open+0x48a/0x1210 fs/open.c:771
                   vfs_open+0xa0/0xd0 fs/open.c:880
                   do_last fs/namei.c:3418 [inline]
                   path_openat+0x144f/0x5650 fs/namei.c:3534
                   do_filp_open+0x26f/0x370 fs/namei.c:3564
                   do_sys_open+0x59a/0x7c0 fs/open.c:1063
                   __do_sys_openat fs/open.c:1090 [inline]
                   __se_sys_openat fs/open.c:1084 [inline]
                   __x64_sys_openat+0x9d/0x100 fs/open.c:1084
                   do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290
                   entry_SYSCALL_64_after_hwframe+0x49/0xbe
 }
 ... key      at: [<ffffffff8b626d80>] __key.43073+0x0/0x40
 ... acquired at:
   lock_acquire+0x1db/0x570 kernel/locking/lockdep.c:3841
   __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
   _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:144
   spin_lock include/linux/spinlock.h:329 [inline]
   aio_poll+0x7b9/0x14e0 fs/aio.c:1772
   __io_submit_one fs/aio.c:1875 [inline]
   io_submit_one+0xc39/0x1050 fs/aio.c:1908
   __do_sys_io_submit fs/aio.c:1953 [inline]
   __se_sys_io_submit fs/aio.c:1923 [inline]
   __x64_sys_io_submit+0x1c4/0x5d0 fs/aio.c:1923
   do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290
   entry_SYSCALL_64_after_hwframe+0x49/0xbe


stack backtrace:
CPU: 0 PID: 8954 Comm: syz-executor2 Not tainted 5.0.0-rc3+ #43
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+0x1db/0x2d0 lib/dump_stack.c:113
 print_bad_irq_dependency kernel/locking/lockdep.c:1573 [inline]
 check_usage.cold+0x5e2/0x917 kernel/locking/lockdep.c:1605
 check_irq_usage kernel/locking/lockdep.c:1661 [inline]
 check_prev_add_irq kernel/locking/lockdep_states.h:8 [inline]
 check_prev_add kernel/locking/lockdep.c:1871 [inline]
 check_prevs_add kernel/locking/lockdep.c:1979 [inline]
 validate_chain kernel/locking/lockdep.c:2350 [inline]
 __lock_acquire+0x2169/0x4a30 kernel/locking/lockdep.c:3338
 lock_acquire+0x1db/0x570 kernel/locking/lockdep.c:3841
 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
 _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:144
 spin_lock include/linux/spinlock.h:329 [inline]
 aio_poll+0x7b9/0x14e0 fs/aio.c:1772
 __io_submit_one fs/aio.c:1875 [inline]
 io_submit_one+0xc39/0x1050 fs/aio.c:1908
 __do_sys_io_submit fs/aio.c:1953 [inline]
 __se_sys_io_submit fs/aio.c:1923 [inline]
 __x64_sys_io_submit+0x1c4/0x5d0 fs/aio.c:1923
 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x458099
Code: 6d b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 3b b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f3d1c423c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000458099
RDX: 00000000200006c0 RSI: 0000000000000001 RDI: 00007f3d1c403000
RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f3d1c4246d4
R13: 00000000004bf2cb R14: 00000000004d0af8 R15: 00000000ffffffff
kobject: 'kvm' (0000000075e4c6d0): kobject_uevent_env
kobject: 'kvm' (0000000075e4c6d0): kobject_uevent_env
kobject: 'kvm' (0000000075e4c6d0): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'loop4' (00000000d1c6633b): kobject_uevent_env
kobject: 'kvm' (0000000075e4c6d0): kobject_uevent_env
kobject: 'loop4' (00000000d1c6633b): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: '0:45' (00000000e277ea84): kobject_add_internal: parent: 'bdi', set: 'devices'
kobject: 'kvm' (0000000075e4c6d0): kobject_uevent_env
kobject: '0:45' (00000000e277ea84): kobject_uevent_env
kobject: 'kvm' (0000000075e4c6d0): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: '0:45' (00000000e277ea84): fill_kobj_path: path = '/devices/virtual/bdi/0:45'
kobject: 'kvm' (0000000075e4c6d0): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (0000000075e4c6d0): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'loop3' (00000000dcc1843a): kobject_uevent_env
kobject: '0:45' (00000000e277ea84): kobject_uevent_env
kobject: 'loop3' (00000000dcc1843a): fill_kobj_path: path = '/devices/virtual/block/loop3'
kobject: '0:45' (00000000e277ea84): fill_kobj_path: path = '/devices/virtual/bdi/0:45'
kobject: 'kvm' (0000000075e4c6d0): kobject_uevent_env
kobject: 'loop0' (00000000be74c0ce): kobject_uevent_env
kobject: 'loop0' (00000000be74c0ce): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'kvm' (0000000075e4c6d0): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: '0:45' (00000000e277ea84): kobject_cleanup, parent           (null)
kobject: '0:45' (00000000e277ea84): calling ktype release
kobject: 'kvm' (0000000075e4c6d0): kobject_uevent_env
kobject: 'loop4' (00000000d1c6633b): kobject_uevent_env
kobject: 'kvm' (0000000075e4c6d0): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (0000000075e4c6d0): kobject_uevent_env
kobject: 'kvm' (0000000075e4c6d0): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (0000000075e4c6d0): kobject_uevent_env
kobject: '0:45': free name
kobject: 'loop4' (00000000d1c6633b): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'kvm' (0000000075e4c6d0): kobject_uevent_env
kobject: 'kvm' (0000000075e4c6d0): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (0000000075e4c6d0): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (0000000075e4c6d0): kobject_uevent_env
kobject: 'kvm' (0000000075e4c6d0): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'loop1' (0000000086af97b5): kobject_uevent_env
kobject: 'loop1' (0000000086af97b5): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'kvm' (0000000075e4c6d0): kobject_uevent_env
kobject: 'kvm' (0000000075e4c6d0): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'loop3' (00000000dcc1843a): kobject_uevent_env
kobject: 'loop3' (00000000dcc1843a): fill_kobj_path: path = '/devices/virtual/block/loop3'
kobject: 'kvm' (0000000075e4c6d0): kobject_uevent_env
kobject: 'loop5' (000000008aee8ea1): kobject_uevent_env
gfs2: not a GFS2 filesystem
kobject: 'kvm' (0000000075e4c6d0): kobject_uevent_env
kobject: 'loop5' (000000008aee8ea1): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'kvm' (0000000075e4c6d0): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (0000000075e4c6d0): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'loop4' (00000000d1c6633b): kobject_uevent_env
kobject: 'kvm' (0000000075e4c6d0): kobject_uevent_env
kobject: 'kvm' (0000000075e4c6d0): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (0000000075e4c6d0): kobject_uevent_env
kobject: 'kvm' (0000000075e4c6d0): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'loop4' (00000000d1c6633b): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'kvm' (0000000075e4c6d0): kobject_uevent_env
kobject: 'loop4' (00000000d1c6633b): kobject_uevent_env
kobject: 'kvm' (0000000075e4c6d0): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'loop4' (00000000d1c6633b): fill_kobj_path: path = '/devices/virtual/block/loop4'
gfs2: not a GFS2 filesystem
kobject: 'kvm' (0000000075e4c6d0): kobject_uevent_env
kobject: 'loop3' (00000000dcc1843a): kobject_uevent_env
kobject: 'kvm' (0000000075e4c6d0): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'loop3' (00000000dcc1843a): fill_kobj_path: path = '/devices/virtual/block/loop3'
kobject: 'kvm' (0000000075e4c6d0): kobject_uevent_env
kobject: 'kvm' (0000000075e4c6d0): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (0000000075e4c6d0): kobject_uevent_env
kobject: 'kvm' (0000000075e4c6d0): kobject_uevent_env
kobject: 'kvm' (0000000075e4c6d0): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (0000000075e4c6d0): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (0000000075e4c6d0): kobject_uevent_env
kobject: 'kvm' (0000000075e4c6d0): kobject_uevent_env
kobject: 'kvm' (0000000075e4c6d0): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (0000000075e4c6d0): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'loop1' (0000000086af97b5): kobject_uevent_env
kobject: 'loop1' (0000000086af97b5): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'kvm' (0000000075e4c6d0): kobject_uevent_env
kobject: 'kvm' (0000000075e4c6d0): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (0000000075e4c6d0): kobject_uevent_env
kobject: 'kvm' (0000000075e4c6d0): kobject_uevent_env
kobject: 'kvm' (0000000075e4c6d0): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (0000000075e4c6d0): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'loop4' (00000000d1c6633b): kobject_uevent_env
kobject: 'loop4' (00000000d1c6633b): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'loop5' (000000008aee8ea1): kobject_uevent_env
kobject: 'loop5' (000000008aee8ea1): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop0' (00000000be74c0ce): kobject_uevent_env
kobject: 'kvm' (0000000075e4c6d0): kobject_uevent_env
kobject: 'loop0' (00000000be74c0ce): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'kvm' (0000000075e4c6d0): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'loop3' (00000000dcc1843a): kobject_uevent_env
kobject: 'loop3' (00000000dcc1843a): fill_kobj_path: path = '/devices/virtual/block/loop3'
__loop_clr_fd: partition scan of loop3 failed (rc=-22)
kobject: 'loop4' (00000000d1c6633b): kobject_uevent_env
kobject: 'loop4' (00000000d1c6633b): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'loop1' (0000000086af97b5): kobject_uevent_env
kobject: 'loop3' (00000000dcc1843a): kobject_uevent_env
kobject: 'loop1' (0000000086af97b5): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'loop3' (00000000dcc1843a): fill_kobj_path: path = '/devices/virtual/block/loop3'
gfs2: not a GFS2 filesystem
kobject: 'loop4' (00000000d1c6633b): kobject_uevent_env
kobject: 'loop4' (00000000d1c6633b): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'loop3' (00000000dcc1843a): kobject_uevent_env
kobject: 'loop3' (00000000dcc1843a): fill_kobj_path: path = '/devices/virtual/block/loop3'
kobject: 'loop4' (00000000d1c6633b): kobject_uevent_env
kobject: 'loop4' (00000000d1c6633b): fill_kobj_path: path = '/devices/virtual/block/loop4'
gfs2: not a GFS2 filesystem
kobject: 'loop4' (00000000d1c6633b): kobject_uevent_env
kobject: 'loop4' (00000000d1c6633b): fill_kobj_path: path = '/devices/virtual/block/loop4'