=====================================================
WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected
6.1.0-rc7-syzkaller-00123-ga4412fdd49dc #0 Not tainted
-----------------------------------------------------
syz-executor.5/24926 [HC0[0]:SC0[0]:HE0:SE1] is trying to acquire:
ffffffff8d00a058 (tasklist_lock){.+.+}-{2:2}, at: send_sigio+0xbe/0x300 fs/fcntl.c:792

and this task is already holding:
ffff888080e5e3b0 (&f->f_owner.lock){...-}-{2:2}, at: send_sigio+0x2f/0x300 fs/fcntl.c:778
which would create a new lock dependency:
 (&f->f_owner.lock){...-}-{2:2} -> (tasklist_lock){.+.+}-{2:2}

but this new dependency connects a SOFTIRQ-irq-safe lock:
 (&client->buffer_lock){..-.}-{2:2}

... which became SOFTIRQ-irq-safe at:
  lock_acquire+0x1a7/0x400 kernel/locking/lockdep.c:5668
  __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
  _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154
  spin_lock include/linux/spinlock.h:350 [inline]
  evdev_pass_values+0xe5/0xb90 drivers/input/evdev.c:261
  evdev_events+0x195/0x280 drivers/input/evdev.c:306
  input_to_handler drivers/input/input.c:127 [inline]
  input_pass_values+0x8fc/0x12b0 drivers/input/input.c:159
  input_event_dispose+0x3d2/0x620 drivers/input/input.c:385
  input_handle_event+0x3f2/0xa80 drivers/input/input.c:402
  input_event+0x9c/0xc0 drivers/input/input.c:431
  hidinput_hid_event+0x130e/0x1bd0 drivers/hid/hid-input.c:1638
  hid_process_event+0x458/0x5a0 drivers/hid/hid-core.c:1527
  hid_process_report drivers/hid/hid-core.c:1675 [inline]
  hid_report_raw_event+0x105c/0x18b0 drivers/hid/hid-core.c:1998
  hid_input_report+0x408/0x4f0 drivers/hid/hid-core.c:2066
  hid_irq_in+0x459/0x690 drivers/hid/usbhid/hid-core.c:284
  __usb_hcd_giveback_urb+0x369/0x530 drivers/usb/core/hcd.c:1671
  dummy_timer+0x86b/0x3110 drivers/usb/gadget/udc/dummy_hcd.c:1988
  call_timer_fn+0xf5/0x210 kernel/time/timer.c:1474
  expire_timers kernel/time/timer.c:1519 [inline]
  __run_timers+0x76a/0x980 kernel/time/timer.c:1790
  run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1803
  __do_softirq+0x277/0x75b kernel/softirq.c:571
  __irq_exit_rcu+0xec/0x170 kernel/softirq.c:650
  irq_exit_rcu+0x5/0x20 kernel/softirq.c:662
  sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1107
  asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:649
  synchronize_rcu+0x0/0x3f0
  lockdep_unregister_key+0x296/0x600 kernel/locking/lockdep.c:6361
  wq_unregister_lockdep kernel/workqueue.c:3497 [inline]
  pwq_unbound_release_workfn+0x245/0x290 kernel/workqueue.c:3735
  process_one_work+0x81c/0xd10 kernel/workqueue.c:2289
  worker_thread+0xb14/0x1330 kernel/workqueue.c:2436
  kthread+0x266/0x300 kernel/kthread.c:376
  ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306

to a SOFTIRQ-irq-unsafe lock:
 (tasklist_lock){.+.+}-{2:2}

... which became SOFTIRQ-irq-unsafe at:
...
  lock_acquire+0x1a7/0x400 kernel/locking/lockdep.c:5668
  __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline]
  _raw_read_lock+0x32/0x40 kernel/locking/spinlock.c:228
  do_wait+0x224/0x9d0 kernel/exit.c:1533
  kernel_wait+0xe4/0x230 kernel/exit.c:1723
  call_usermodehelper_exec_sync kernel/umh.c:140 [inline]
  call_usermodehelper_exec_work+0xb4/0x220 kernel/umh.c:167
  process_one_work+0x81c/0xd10 kernel/workqueue.c:2289
  worker_thread+0xb14/0x1330 kernel/workqueue.c:2436
  kthread+0x266/0x300 kernel/kthread.c:376
  ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306

other info that might help us debug this:

Chain exists of:
  &client->buffer_lock --> &f->f_owner.lock --> tasklist_lock

 Possible interrupt unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(tasklist_lock);
                               local_irq_disable();
                               lock(&client->buffer_lock);
                               lock(&f->f_owner.lock);
  <Interrupt>
    lock(&client->buffer_lock);

 *** DEADLOCK ***

5 locks held by syz-executor.5/24926:
 #0: ffffffff8d323da0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:303
 #1: ffffffff8d323da0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:303
 #2: ffffffff8d323da0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:303
 #3: ffff8880231556a8 (&new->fa_lock){....}-{2:2}, at: kill_fasync_rcu fs/fcntl.c:996 [inline]
 #3: ffff8880231556a8 (&new->fa_lock){....}-{2:2}, at: kill_fasync+0x13b/0x430 fs/fcntl.c:1017
 #4: ffff888080e5e3b0 (&f->f_owner.lock){...-}-{2:2}, at: send_sigio+0x2f/0x300 fs/fcntl.c:778

the dependencies between SOFTIRQ-irq-safe lock and the holding lock:
  -> (&client->buffer_lock){..-.}-{2:2} {
     IN-SOFTIRQ-W at:
                        lock_acquire+0x1a7/0x400 kernel/locking/lockdep.c:5668
                        __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
                        _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154
                        spin_lock include/linux/spinlock.h:350 [inline]
                        evdev_pass_values+0xe5/0xb90 drivers/input/evdev.c:261
                        evdev_events+0x195/0x280 drivers/input/evdev.c:306
                        input_to_handler drivers/input/input.c:127 [inline]
                        input_pass_values+0x8fc/0x12b0 drivers/input/input.c:159
                        input_event_dispose+0x3d2/0x620 drivers/input/input.c:385
                        input_handle_event+0x3f2/0xa80 drivers/input/input.c:402
                        input_event+0x9c/0xc0 drivers/input/input.c:431
                        hidinput_hid_event+0x130e/0x1bd0 drivers/hid/hid-input.c:1638
                        hid_process_event+0x458/0x5a0 drivers/hid/hid-core.c:1527
                        hid_process_report drivers/hid/hid-core.c:1675 [inline]
                        hid_report_raw_event+0x105c/0x18b0 drivers/hid/hid-core.c:1998
                        hid_input_report+0x408/0x4f0 drivers/hid/hid-core.c:2066
                        hid_irq_in+0x459/0x690 drivers/hid/usbhid/hid-core.c:284
                        __usb_hcd_giveback_urb+0x369/0x530 drivers/usb/core/hcd.c:1671
                        dummy_timer+0x86b/0x3110 drivers/usb/gadget/udc/dummy_hcd.c:1988
                        call_timer_fn+0xf5/0x210 kernel/time/timer.c:1474
                        expire_timers kernel/time/timer.c:1519 [inline]
                        __run_timers+0x76a/0x980 kernel/time/timer.c:1790
                        run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1803
                        __do_softirq+0x277/0x75b kernel/softirq.c:571
                        __irq_exit_rcu+0xec/0x170 kernel/softirq.c:650
                        irq_exit_rcu+0x5/0x20 kernel/softirq.c:662
                        sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1107
                        asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:649
                        synchronize_rcu+0x0/0x3f0
                        lockdep_unregister_key+0x296/0x600 kernel/locking/lockdep.c:6361
                        wq_unregister_lockdep kernel/workqueue.c:3497 [inline]
                        pwq_unbound_release_workfn+0x245/0x290 kernel/workqueue.c:3735
                        process_one_work+0x81c/0xd10 kernel/workqueue.c:2289
                        worker_thread+0xb14/0x1330 kernel/workqueue.c:2436
                        kthread+0x266/0x300 kernel/kthread.c:376
                        ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
     INITIAL USE at:
                       lock_acquire+0x1a7/0x400 kernel/locking/lockdep.c:5668
                       __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
                       _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154
                       spin_lock include/linux/spinlock.h:350 [inline]
                       evdev_pass_values+0xe5/0xb90 drivers/input/evdev.c:261
                       evdev_events+0x195/0x280 drivers/input/evdev.c:306
                       input_to_handler drivers/input/input.c:127 [inline]
                       input_pass_values+0x8fc/0x12b0 drivers/input/input.c:159
                       input_event_dispose+0x33f/0x620 drivers/input/input.c:374
                       input_handle_event+0x3f2/0xa80 drivers/input/input.c:402
                       input_inject_event+0x189/0x270 drivers/input/input.c:461
                       evdev_write+0x685/0x7d0 drivers/input/evdev.c:530
                       vfs_write+0x2e5/0xbb0 fs/read_write.c:582
                       ksys_write+0x19b/0x2c0 fs/read_write.c:637
                       do_syscall_x64 arch/x86/entry/common.c:50 [inline]
                       do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
                       entry_SYSCALL_64_after_hwframe+0x63/0xcd
   }
   ... key      at: [<ffffffff922e62a0>] evdev_open.__key.25+0x0/0x20
 -> (&new->fa_lock){....}-{2:2} {
    INITIAL USE at:
                     lock_acquire+0x1a7/0x400 kernel/locking/lockdep.c:5668
                     __raw_write_lock_irq include/linux/rwlock_api_smp.h:195 [inline]
                     _raw_write_lock_irq+0xcf/0x110 kernel/locking/spinlock.c:326
                     fasync_remove_entry+0xff/0x1d0 fs/fcntl.c:873
                     sock_fasync+0x86/0xf0 net/socket.c:1390
                     __fput+0x70b/0x880 fs/file_table.c:317
                     task_work_run+0x243/0x300 kernel/task_work.c:179
                     get_signal+0x1642/0x1810 kernel/signal.c:2635
                     arch_do_signal_or_restart+0x8d/0x750 arch/x86/kernel/signal.c:869
                     exit_to_user_mode_loop+0x74/0x160 kernel/entry/common.c:168
                     exit_to_user_mode_prepare+0xad/0x110 kernel/entry/common.c:203
                     __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
                     syscall_exit_to_user_mode+0x2e/0x60 kernel/entry/common.c:296
                     entry_SYSCALL_64_after_hwframe+0x63/0xcd
    INITIAL READ USE at:
                          lock_acquire+0x1a7/0x400 kernel/locking/lockdep.c:5668
                          __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline]
                          _raw_read_lock_irqsave+0xd9/0x120 kernel/locking/spinlock.c:236
                          kill_fasync_rcu fs/fcntl.c:996 [inline]
                          kill_fasync+0x13b/0x430 fs/fcntl.c:1017
                          sock_wake_async+0x130/0x150
                          sk_wake_async+0x12e/0x200 include/net/sock.h:2524
                          unix_release_sock+0x714/0xd90 net/unix/af_unix.c:635
                          unix_release+0x88/0xc0 net/unix/af_unix.c:1041
                          __sock_release net/socket.c:650 [inline]
                          sock_close+0xd7/0x260 net/socket.c:1365
                          __fput+0x3ba/0x880 fs/file_table.c:320
                          task_work_run+0x243/0x300 kernel/task_work.c:179
                          get_signal+0x1642/0x1810 kernel/signal.c:2635
                          arch_do_signal_or_restart+0x8d/0x750 arch/x86/kernel/signal.c:869
                          exit_to_user_mode_loop+0x74/0x160 kernel/entry/common.c:168
                          exit_to_user_mode_prepare+0xad/0x110 kernel/entry/common.c:203
                          __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
                          syscall_exit_to_user_mode+0x2e/0x60 kernel/entry/common.c:296
                          entry_SYSCALL_64_after_hwframe+0x63/0xcd
  }
  ... key      at: [<ffffffff91fe8ea0>] fasync_insert_entry.__key+0x0/0x20
  ... acquired at:
   lock_acquire+0x1a7/0x400 kernel/locking/lockdep.c:5668
   __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline]
   _raw_read_lock_irqsave+0xd9/0x120 kernel/locking/spinlock.c:236
   kill_fasync_rcu fs/fcntl.c:996 [inline]
   kill_fasync+0x13b/0x430 fs/fcntl.c:1017
   __pass_event drivers/input/evdev.c:240 [inline]
   evdev_pass_values+0x5b1/0xb90 drivers/input/evdev.c:278
   evdev_events+0x195/0x280 drivers/input/evdev.c:306
   input_to_handler drivers/input/input.c:127 [inline]
   input_pass_values+0x8fc/0x12b0 drivers/input/input.c:159
   input_event_dispose+0x33f/0x620 drivers/input/input.c:374
   input_handle_event+0x3f2/0xa80 drivers/input/input.c:402
   input_inject_event+0x189/0x270 drivers/input/input.c:461
   evdev_write+0x685/0x7d0 drivers/input/evdev.c:530
   vfs_write+0x2e5/0xbb0 fs/read_write.c:582
   ksys_write+0x19b/0x2c0 fs/read_write.c:637
   do_syscall_x64 arch/x86/entry/common.c:50 [inline]
   do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
   entry_SYSCALL_64_after_hwframe+0x63/0xcd

-> (&f->f_owner.lock){...-}-{2:2} {
   IN-SOFTIRQ-R at:
                    lock_acquire+0x1a7/0x400 kernel/locking/lockdep.c:5668
                    __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline]
                    _raw_read_lock_irqsave+0xd9/0x120 kernel/locking/spinlock.c:236
                    send_sigurg+0x25/0x370 fs/fcntl.c:817
                    sk_send_sigurg+0x6a/0xb0 net/core/sock.c:3333
                    tcp_check_urg+0x1f6/0x720 net/ipv4/tcp_input.c:5614
                    tcp_urg+0x152/0x440 net/ipv4/tcp_input.c:5655
                    tcp_rcv_established+0x9f0/0x1a10 net/ipv4/tcp_input.c:6002
                    tcp_v4_do_rcv+0x479/0xac0 net/ipv4/tcp_ipv4.c:1670
                    tcp_v4_rcv+0x2a2a/0x32e0 net/ipv4/tcp_ipv4.c:2091
                    ip_protocol_deliver_rcu+0x38d/0x750 net/ipv4/ip_input.c:205
                    ip_local_deliver_finish+0x269/0x480 net/ipv4/ip_input.c:233
                    __netif_receive_skb_one_core net/core/dev.c:5489 [inline]
                    __netif_receive_skb+0x1c5/0x500 net/core/dev.c:5603
                    process_backlog+0x568/0x920 net/core/dev.c:5931
                    __napi_poll+0xbe/0x4b0 net/core/dev.c:6498
                    napi_poll net/core/dev.c:6565 [inline]
                    net_rx_action+0x76c/0x1100 net/core/dev.c:6676
                    __do_softirq+0x277/0x75b kernel/softirq.c:571
                    do_softirq+0x161/0x240 kernel/softirq.c:472
                    __local_bh_enable_ip+0x1b0/0x1f0 kernel/softirq.c:396
                    tcp_sendmsg+0x36/0x40 net/ipv4/tcp.c:1484
                    sock_sendmsg_nosec net/socket.c:714 [inline]
                    sock_sendmsg net/socket.c:734 [inline]
                    __sys_sendto+0x46d/0x5f0 net/socket.c:2117
                    __do_sys_sendto net/socket.c:2129 [inline]
                    __se_sys_sendto net/socket.c:2125 [inline]
                    __x64_sys_sendto+0xda/0xf0 net/socket.c:2125
                    do_syscall_x64 arch/x86/entry/common.c:50 [inline]
                    do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
                    entry_SYSCALL_64_after_hwframe+0x63/0xcd
   INITIAL USE at:
                   lock_acquire+0x1a7/0x400 kernel/locking/lockdep.c:5668
                   __raw_write_lock_irq include/linux/rwlock_api_smp.h:195 [inline]
                   _raw_write_lock_irq+0xcf/0x110 kernel/locking/spinlock.c:326
                   f_modown+0x38/0x340 fs/fcntl.c:91
                   __f_setown fs/fcntl.c:110 [inline]
                   f_setown+0x113/0x1a0 fs/fcntl.c:138
                   do_fcntl+0x128/0x13d0 fs/fcntl.c:377
                   __do_sys_fcntl fs/fcntl.c:454 [inline]
                   __se_sys_fcntl+0xd5/0x1b0 fs/fcntl.c:439
                   do_syscall_x64 arch/x86/entry/common.c:50 [inline]
                   do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
                   entry_SYSCALL_64_after_hwframe+0x63/0xcd
   INITIAL READ USE at:
                        lock_acquire+0x1a7/0x400 kernel/locking/lockdep.c:5668
                        __raw_read_lock_irq include/linux/rwlock_api_smp.h:169 [inline]
                        _raw_read_lock_irq+0xd6/0x120 kernel/locking/spinlock.c:244
                        f_getown_ex fs/fcntl.c:212 [inline]
                        do_fcntl+0x1e1/0x13d0 fs/fcntl.c:380
                        __do_sys_fcntl fs/fcntl.c:454 [inline]
                        __se_sys_fcntl+0xd5/0x1b0 fs/fcntl.c:439
                        do_syscall_x64 arch/x86/entry/common.c:50 [inline]
                        do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
                        entry_SYSCALL_64_after_hwframe+0x63/0xcd
 }
 ... key      at: [<ffffffff91fe8220>] __alloc_file.__key+0x0/0x10
 ... acquired at:
   lock_acquire+0x1a7/0x400 kernel/locking/lockdep.c:5668
   __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline]
   _raw_read_lock_irqsave+0xd9/0x120 kernel/locking/spinlock.c:236
   send_sigio+0x2f/0x300 fs/fcntl.c:778
   kill_fasync_rcu fs/fcntl.c:1003 [inline]
   kill_fasync+0x1e4/0x430 fs/fcntl.c:1017
   sock_wake_async+0x130/0x150
   sk_wake_async+0x12e/0x200 include/net/sock.h:2524
   unix_release_sock+0x714/0xd90 net/unix/af_unix.c:635
   unix_release+0x88/0xc0 net/unix/af_unix.c:1041
   __sock_release net/socket.c:650 [inline]
   sock_close+0xd7/0x260 net/socket.c:1365
   __fput+0x3ba/0x880 fs/file_table.c:320
   task_work_run+0x243/0x300 kernel/task_work.c:179
   get_signal+0x1642/0x1810 kernel/signal.c:2635
   arch_do_signal_or_restart+0x8d/0x750 arch/x86/kernel/signal.c:869
   exit_to_user_mode_loop+0x74/0x160 kernel/entry/common.c:168
   exit_to_user_mode_prepare+0xad/0x110 kernel/entry/common.c:203
   __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
   syscall_exit_to_user_mode+0x2e/0x60 kernel/entry/common.c:296
   entry_SYSCALL_64_after_hwframe+0x63/0xcd


the dependencies between the lock to be acquired
 and SOFTIRQ-irq-unsafe lock:
-> (tasklist_lock){.+.+}-{2:2} {
   HARDIRQ-ON-R at:
                    lock_acquire+0x1a7/0x400 kernel/locking/lockdep.c:5668
                    __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline]
                    _raw_read_lock+0x32/0x40 kernel/locking/spinlock.c:228
                    do_wait+0x224/0x9d0 kernel/exit.c:1533
                    kernel_wait+0xe4/0x230 kernel/exit.c:1723
                    call_usermodehelper_exec_sync kernel/umh.c:140 [inline]
                    call_usermodehelper_exec_work+0xb4/0x220 kernel/umh.c:167
                    process_one_work+0x81c/0xd10 kernel/workqueue.c:2289
                    worker_thread+0xb14/0x1330 kernel/workqueue.c:2436
                    kthread+0x266/0x300 kernel/kthread.c:376
                    ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
   SOFTIRQ-ON-R at:
                    lock_acquire+0x1a7/0x400 kernel/locking/lockdep.c:5668
                    __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline]
                    _raw_read_lock+0x32/0x40 kernel/locking/spinlock.c:228
                    do_wait+0x224/0x9d0 kernel/exit.c:1533
                    kernel_wait+0xe4/0x230 kernel/exit.c:1723
                    call_usermodehelper_exec_sync kernel/umh.c:140 [inline]
                    call_usermodehelper_exec_work+0xb4/0x220 kernel/umh.c:167
                    process_one_work+0x81c/0xd10 kernel/workqueue.c:2289
                    worker_thread+0xb14/0x1330 kernel/workqueue.c:2436
                    kthread+0x266/0x300 kernel/kthread.c:376
                    ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
   INITIAL USE at:
                   lock_acquire+0x1a7/0x400 kernel/locking/lockdep.c:5668
                   __raw_write_lock_irq include/linux/rwlock_api_smp.h:195 [inline]
                   _raw_write_lock_irq+0xcf/0x110 kernel/locking/spinlock.c:326
                   copy_process+0x2442/0x3fc0 kernel/fork.c:2387
                   kernel_clone+0x227/0x640 kernel/fork.c:2671
                   user_mode_thread+0x12d/0x190 kernel/fork.c:2747
                   rest_init+0x21/0x270 init/main.c:694
                   start_kernel+0x0/0x560 init/main.c:890
                   start_kernel+0x4b1/0x560 init/main.c:1145
                   secondary_startup_64_no_verify+0xcf/0xdb
   INITIAL READ USE at:
                        lock_acquire+0x1a7/0x400 kernel/locking/lockdep.c:5668
                        __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline]
                        _raw_read_lock+0x32/0x40 kernel/locking/spinlock.c:228
                        do_wait+0x224/0x9d0 kernel/exit.c:1533
                        kernel_wait+0xe4/0x230 kernel/exit.c:1723
                        call_usermodehelper_exec_sync kernel/umh.c:140 [inline]
                        call_usermodehelper_exec_work+0xb4/0x220 kernel/umh.c:167
                        process_one_work+0x81c/0xd10 kernel/workqueue.c:2289
                        worker_thread+0xb14/0x1330 kernel/workqueue.c:2436
                        kthread+0x266/0x300 kernel/kthread.c:376
                        ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
 }
 ... key      at: [<ffffffff8d00a058>] tasklist_lock+0x18/0x40
 ... acquired at:
   lock_acquire+0x1a7/0x400 kernel/locking/lockdep.c:5668
   __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline]
   _raw_read_lock+0x32/0x40 kernel/locking/spinlock.c:228
   send_sigio+0xbe/0x300 fs/fcntl.c:792
   kill_fasync_rcu fs/fcntl.c:1003 [inline]
   kill_fasync+0x1e4/0x430 fs/fcntl.c:1017
   sock_wake_async+0x130/0x150
   sk_wake_async+0x12e/0x200 include/net/sock.h:2524
   sock_def_readable+0x152/0x200 net/core/sock.c:3277
   unix_dgram_sendmsg+0x1551/0x2050 net/unix/af_unix.c:2076
   sock_sendmsg_nosec net/socket.c:714 [inline]
   sock_sendmsg net/socket.c:734 [inline]
   ____sys_sendmsg+0x597/0x8e0 net/socket.c:2482
   ___sys_sendmsg net/socket.c:2536 [inline]
   __sys_sendmmsg+0x3d7/0x770 net/socket.c:2622
   __do_sys_sendmmsg net/socket.c:2651 [inline]
   __se_sys_sendmmsg net/socket.c:2648 [inline]
   __x64_sys_sendmmsg+0x9c/0xb0 net/socket.c:2648
   do_syscall_x64 arch/x86/entry/common.c:50 [inline]
   do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
   entry_SYSCALL_64_after_hwframe+0x63/0xcd


stack backtrace:
CPU: 0 PID: 24926 Comm: syz-executor.5 Not tainted 6.1.0-rc7-syzkaller-00123-ga4412fdd49dc #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
 print_bad_irq_dependency kernel/locking/lockdep.c:2611 [inline]
 check_irq_usage kernel/locking/lockdep.c:2850 [inline]
 check_prev_add kernel/locking/lockdep.c:3101 [inline]
 check_prevs_add kernel/locking/lockdep.c:3216 [inline]
 validate_chain+0x55d4/0x6470 kernel/locking/lockdep.c:3831
 __lock_acquire+0x1292/0x1f60 kernel/locking/lockdep.c:5055
 lock_acquire+0x1a7/0x400 kernel/locking/lockdep.c:5668
 __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline]
 _raw_read_lock+0x32/0x40 kernel/locking/spinlock.c:228
 send_sigio+0xbe/0x300 fs/fcntl.c:792
 kill_fasync_rcu fs/fcntl.c:1003 [inline]
 kill_fasync+0x1e4/0x430 fs/fcntl.c:1017
 sock_wake_async+0x130/0x150
 sk_wake_async+0x12e/0x200 include/net/sock.h:2524
 sock_def_readable+0x152/0x200 net/core/sock.c:3277
 unix_dgram_sendmsg+0x1551/0x2050 net/unix/af_unix.c:2076
 sock_sendmsg_nosec net/socket.c:714 [inline]
 sock_sendmsg net/socket.c:734 [inline]
 ____sys_sendmsg+0x597/0x8e0 net/socket.c:2482
 ___sys_sendmsg net/socket.c:2536 [inline]
 __sys_sendmmsg+0x3d7/0x770 net/socket.c:2622
 __do_sys_sendmmsg net/socket.c:2651 [inline]
 __se_sys_sendmmsg net/socket.c:2648 [inline]
 __x64_sys_sendmmsg+0x9c/0xb0 net/socket.c:2648
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f1f0e08c0d9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f1f0ed50168 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00007f1f0e1abf80 RCX: 00007f1f0e08c0d9
RDX: 0307017fdb7a66cb RSI: 0000000020002dc0 RDI: 0000000000000004
RBP: 00007f1f0e0e7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000003ec0 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffed5de7b9f R14: 00007f1f0ed50300 R15: 0000000000022000
 </TASK>