syzbot

=====================================================
WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected
5.15.157-syzkaller #0 Not tainted
-----------------------------------------------------
syz-executor.4/15376 [HC0[0]:SC0[0]:HE0:SE1] is trying to acquire:
ffff888060a424b0 (&new->fa_lock){....}-{2:2}, at: kill_fasync_rcu fs/fcntl.c:1014 [inline]
ffff888060a424b0 (&new->fa_lock){....}-{2:2}, at: kill_fasync+0x16a/0x490 fs/fcntl.c:1035

and this task is already holding:
ffff88801a428028 (&client->buffer_lock){..-.}-{2:2}, at: spin_lock include/linux/spinlock.h:363 [inline]
ffff88801a428028 (&client->buffer_lock){..-.}-{2:2}, at: evdev_pass_values+0xe7/0xb60 drivers/input/evdev.c:261
which would create a new lock dependency:
 (&client->buffer_lock){..-.}-{2:2} -> (&new->fa_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+0x1db/0x4f0 kernel/locking/lockdep.c:5623
  __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
  _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154
  spin_lock include/linux/spinlock.h:363 [inline]
  evdev_pass_values+0xe7/0xb60 drivers/input/evdev.c:261
  evdev_events+0x198/0x2c0 drivers/input/evdev.c:306
  input_to_handler drivers/input/input.c:126 [inline]
  input_pass_values+0x873/0x1200 drivers/input/input.c:156
  input_handle_event+0xd3d/0x1600 drivers/input/input.c:426
  input_event+0x9d/0xd0 drivers/input/input.c:457
  hidinput_hid_event+0x1137/0x18e0 drivers/hid/hid-input.c:1467
  hid_process_event+0x433/0x580 drivers/hid/hid-core.c:1539
  hid_input_field drivers/hid/hid-core.c:1583 [inline]
  hid_report_raw_event+0xe9e/0x1640 drivers/hid/hid-core.c:1807
  hid_input_report+0x419/0x4d0 drivers/hid/hid-core.c:1874
  hid_irq_in+0x45c/0x690 drivers/hid/usbhid/hid-core.c:284
  __usb_hcd_giveback_urb+0x371/0x530 drivers/usb/core/hcd.c:1674
  dummy_timer+0x8ad/0x3200 drivers/usb/gadget/udc/dummy_hcd.c:1987
  call_timer_fn+0x16d/0x560 kernel/time/timer.c:1451
  expire_timers kernel/time/timer.c:1496 [inline]
  __run_timers+0x67c/0x890 kernel/time/timer.c:1767
  run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1780
  __do_softirq+0x3b3/0x93a kernel/softirq.c:558
  invoke_softirq kernel/softirq.c:432 [inline]
  __irq_exit_rcu+0x155/0x240 kernel/softirq.c:637
  irq_exit_rcu+0x5/0x20 kernel/softirq.c:649
  sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1096
  asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638
  ieee80211_update_bss_from_elems+0x29f/0xeb0 net/mac80211/scan.c:85
  ieee80211_bss_info_update+0x937/0xc80 net/mac80211/scan.c:223
  ieee80211_rx_bss_info net/mac80211/ibss.c:1123 [inline]
  ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1614 [inline]
  ieee80211_ibss_rx_queued_mgmt+0x175e/0x2af0 net/mac80211/ibss.c:1643
  ieee80211_iface_process_skb net/mac80211/iface.c:1441 [inline]
  ieee80211_iface_work+0x78f/0xcc0 net/mac80211/iface.c:1495
  process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2310
  worker_thread+0xaca/0x1280 kernel/workqueue.c:2457
  kthread+0x3f6/0x4f0 kernel/kthread.c:334
  ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:300

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

... which became SOFTIRQ-irq-unsafe at:
...
  lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623
  __raw_read_lock include/linux/rwlock_api_smp.h:149 [inline]
  _raw_read_lock+0x32/0x40 kernel/locking/spinlock.c:228
  do_wait+0x2a7/0xaf0 kernel/exit.c:1576
  kernel_wait+0xe5/0x230 kernel/exit.c:1766
  call_usermodehelper_exec_sync kernel/umh.c:139 [inline]
  call_usermodehelper_exec_work+0xb5/0x220 kernel/umh.c:166
  process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2310
  worker_thread+0xaca/0x1280 kernel/workqueue.c:2457
  kthread+0x3f6/0x4f0 kernel/kthread.c:334
  ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:300

other info that might help us debug this:

Chain exists of:
  &client->buffer_lock --> &new->fa_lock --> tasklist_lock

 Possible interrupt unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(tasklist_lock);
                               local_irq_disable();
                               lock(&client->buffer_lock);
                               lock(&new->fa_lock);
  <Interrupt>
    lock(&client->buffer_lock);

 *** DEADLOCK ***

7 locks held by syz-executor.4/15376:
 #0: ffff8881480b0110 (&evdev->mutex){+.+.}-{3:3}, at: evdev_write+0x26d/0x7c0 drivers/input/evdev.c:513
 #1: ffff888019638230 (&dev->event_lock#2){-.-.}-{2:2}, at: input_inject_event+0xc0/0x300 drivers/input/input.c:482
 #2: ffffffff8c91fb20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:311
 #3: ffffffff8c91fb20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:311
 #4: ffffffff8c91fb20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:311
 #5: ffff88801a428028 (&client->buffer_lock){..-.}-{2:2}, at: spin_lock include/linux/spinlock.h:363 [inline]
 #5: ffff88801a428028 (&client->buffer_lock){..-.}-{2:2}, at: evdev_pass_values+0xe7/0xb60 drivers/input/evdev.c:261
 #6: ffffffff8c91fb20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:311

the dependencies between SOFTIRQ-irq-safe lock and the holding lock:
-> (&client->buffer_lock){..-.}-{2:2} {
   IN-SOFTIRQ-W at:
                    lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623
                    __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
                    _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154
                    spin_lock include/linux/spinlock.h:363 [inline]
                    evdev_pass_values+0xe7/0xb60 drivers/input/evdev.c:261
                    evdev_events+0x198/0x2c0 drivers/input/evdev.c:306
                    input_to_handler drivers/input/input.c:126 [inline]
                    input_pass_values+0x873/0x1200 drivers/input/input.c:156
                    input_handle_event+0xd3d/0x1600 drivers/input/input.c:426
                    input_event+0x9d/0xd0 drivers/input/input.c:457
                    hidinput_hid_event+0x1137/0x18e0 drivers/hid/hid-input.c:1467
                    hid_process_event+0x433/0x580 drivers/hid/hid-core.c:1539
                    hid_input_field drivers/hid/hid-core.c:1583 [inline]
                    hid_report_raw_event+0xe9e/0x1640 drivers/hid/hid-core.c:1807
                    hid_input_report+0x419/0x4d0 drivers/hid/hid-core.c:1874
                    hid_irq_in+0x45c/0x690 drivers/hid/usbhid/hid-core.c:284
                    __usb_hcd_giveback_urb+0x371/0x530 drivers/usb/core/hcd.c:1674
                    dummy_timer+0x8ad/0x3200 drivers/usb/gadget/udc/dummy_hcd.c:1987
                    call_timer_fn+0x16d/0x560 kernel/time/timer.c:1451
                    expire_timers kernel/time/timer.c:1496 [inline]
                    __run_timers+0x67c/0x890 kernel/time/timer.c:1767
                    run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1780
                    __do_softirq+0x3b3/0x93a kernel/softirq.c:558
                    invoke_softirq kernel/softirq.c:432 [inline]
                    __irq_exit_rcu+0x155/0x240 kernel/softirq.c:637
                    irq_exit_rcu+0x5/0x20 kernel/softirq.c:649
                    sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1096
                    asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638
                    ieee80211_update_bss_from_elems+0x29f/0xeb0 net/mac80211/scan.c:85
                    ieee80211_bss_info_update+0x937/0xc80 net/mac80211/scan.c:223
                    ieee80211_rx_bss_info net/mac80211/ibss.c:1123 [inline]
                    ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1614 [inline]
                    ieee80211_ibss_rx_queued_mgmt+0x175e/0x2af0 net/mac80211/ibss.c:1643
                    ieee80211_iface_process_skb net/mac80211/iface.c:1441 [inline]
                    ieee80211_iface_work+0x78f/0xcc0 net/mac80211/iface.c:1495
                    process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2310
                    worker_thread+0xaca/0x1280 kernel/workqueue.c:2457
                    kthread+0x3f6/0x4f0 kernel/kthread.c:334
                    ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:300
   INITIAL USE at:
                   lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623
                   __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
                   _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154
                   spin_lock include/linux/spinlock.h:363 [inline]
                   evdev_handle_get_val+0x6e/0x840 drivers/input/evdev.c:900
                   evdev_ioctl_handler+0x1337/0x2090 drivers/input/evdev.c:1272
                   vfs_ioctl fs/ioctl.c:51 [inline]
                   __do_sys_ioctl fs/ioctl.c:874 [inline]
                   __se_sys_ioctl+0xf1/0x160 fs/ioctl.c:860
                   do_syscall_x64 arch/x86/entry/common.c:50 [inline]
                   do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
                   entry_SYSCALL_64_after_hwframe+0x66/0xd0
 }
 ... key      at: [<ffffffff91752ce0>] evdev_open.__key.23+0x0/0x20

the dependencies between the lock to be acquired
 and SOFTIRQ-irq-unsafe lock:
  -> (tasklist_lock){.+.+}-{2:2} {
     HARDIRQ-ON-R at:
                        lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623
                        __raw_read_lock include/linux/rwlock_api_smp.h:149 [inline]
                        _raw_read_lock+0x32/0x40 kernel/locking/spinlock.c:228
                        do_wait+0x2a7/0xaf0 kernel/exit.c:1576
                        kernel_wait+0xe5/0x230 kernel/exit.c:1766
                        call_usermodehelper_exec_sync kernel/umh.c:139 [inline]
                        call_usermodehelper_exec_work+0xb5/0x220 kernel/umh.c:166
                        process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2310
                        worker_thread+0xaca/0x1280 kernel/workqueue.c:2457
                        kthread+0x3f6/0x4f0 kernel/kthread.c:334
                        ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:300
     SOFTIRQ-ON-R at:
                        lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623
                        __raw_read_lock include/linux/rwlock_api_smp.h:149 [inline]
                        _raw_read_lock+0x32/0x40 kernel/locking/spinlock.c:228
                        do_wait+0x2a7/0xaf0 kernel/exit.c:1576
                        kernel_wait+0xe5/0x230 kernel/exit.c:1766
                        call_usermodehelper_exec_sync kernel/umh.c:139 [inline]
                        call_usermodehelper_exec_work+0xb5/0x220 kernel/umh.c:166
                        process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2310
                        worker_thread+0xaca/0x1280 kernel/workqueue.c:2457
                        kthread+0x3f6/0x4f0 kernel/kthread.c:334
                        ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:300
     INITIAL USE at:
                       lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623
                       __raw_write_lock_irq include/linux/rwlock_api_smp.h:196 [inline]
                       _raw_write_lock_irq+0xcf/0x110 kernel/locking/spinlock.c:316
                       copy_process+0x22be/0x3ef0 kernel/fork.c:2337
                       kernel_clone+0x210/0x960 kernel/fork.c:2604
                       kernel_thread+0x168/0x1e0 kernel/fork.c:2656
                       rest_init+0x21/0x330 init/main.c:706
                       start_kernel+0x48c/0x540 init/main.c:1140
                       secondary_startup_64_no_verify+0xb1/0xbb
     INITIAL READ USE at:
                            lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623
                            __raw_read_lock include/linux/rwlock_api_smp.h:149 [inline]
                            _raw_read_lock+0x32/0x40 kernel/locking/spinlock.c:228
                            do_wait+0x2a7/0xaf0 kernel/exit.c:1576
                            kernel_wait+0xe5/0x230 kernel/exit.c:1766
                            call_usermodehelper_exec_sync kernel/umh.c:139 [inline]
                            call_usermodehelper_exec_work+0xb5/0x220 kernel/umh.c:166
                            process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2310
                            worker_thread+0xaca/0x1280 kernel/workqueue.c:2457
                            kthread+0x3f6/0x4f0 kernel/kthread.c:334
                            ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:300
   }
   ... key      at: [<ffffffff8c60a058>] tasklist_lock+0x18/0x40
   ... acquired at:
   lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623
   __raw_read_lock include/linux/rwlock_api_smp.h:149 [inline]
   _raw_read_lock+0x32/0x40 kernel/locking/spinlock.c:228
   send_sigio+0xd2/0x330 fs/fcntl.c:810
   kill_fasync_rcu fs/fcntl.c:1021 [inline]
   kill_fasync+0x20c/0x490 fs/fcntl.c:1035
   lease_break_callback+0x22/0x30 fs/locks.c:613
   __break_lease+0x4d1/0x13b0 fs/locks.c:1615
   break_lease include/linux/fs.h:2645 [inline]
   do_dentry_open+0x77a/0xfb0 fs/open.c:817
   do_open fs/namei.c:3608 [inline]
   path_openat+0x2705/0x2f20 fs/namei.c:3742
   do_filp_open+0x21c/0x460 fs/namei.c:3769
   do_sys_openat2+0x13b/0x500 fs/open.c:1253
   do_sys_open fs/open.c:1269 [inline]
   __do_sys_open fs/open.c:1277 [inline]
   __se_sys_open fs/open.c:1273 [inline]
   __x64_sys_open+0x221/0x270 fs/open.c:1273
   do_syscall_x64 arch/x86/entry/common.c:50 [inline]
   do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
   entry_SYSCALL_64_after_hwframe+0x66/0xd0

 -> (&f->f_owner.lock){....}-{2:2} {
    INITIAL USE at:
                     lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623
                     __raw_write_lock_irq include/linux/rwlock_api_smp.h:196 [inline]
                     _raw_write_lock_irq+0xcf/0x110 kernel/locking/spinlock.c:316
                     f_modown+0x38/0x340 fs/fcntl.c:91
                     fcntl_dirnotify+0x688/0x890 fs/notify/dnotify/dnotify.c:351
                     do_fcntl+0x605/0x1600 fs/fcntl.c:422
                     __do_sys_fcntl fs/fcntl.c:472 [inline]
                     __se_sys_fcntl+0xd8/0x1b0 fs/fcntl.c:457
                     do_syscall_x64 arch/x86/entry/common.c:50 [inline]
                     do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
                     entry_SYSCALL_64_after_hwframe+0x66/0xd0
    INITIAL READ USE at:
                          lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623
                          __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+0x22/0x240 fs/fcntl.c:154
                          do_fcntl+0x1cb/0x1600 fs/fcntl.c:389
                          __do_sys_fcntl fs/fcntl.c:472 [inline]
                          __se_sys_fcntl+0xd8/0x1b0 fs/fcntl.c:457
                          do_syscall_x64 arch/x86/entry/common.c:50 [inline]
                          do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
                          entry_SYSCALL_64_after_hwframe+0x66/0xd0
  }
  ... key      at: [<ffffffff91455cc0>] __alloc_file.__key+0x0/0x10
  ... acquired at:
   lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623
   __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:159 [inline]
   _raw_read_lock_irqsave+0xd9/0x120 kernel/locking/spinlock.c:236
   send_sigio+0x2f/0x330 fs/fcntl.c:796
   kill_fasync_rcu fs/fcntl.c:1021 [inline]
   kill_fasync+0x20c/0x490 fs/fcntl.c:1035
   wakeup_pipe_readers fs/splice.c:168 [inline]
   splice_pipe_to_pipe fs/splice.c:1563 [inline]
   do_splice+0x12cd/0x1790 fs/splice.c:1054
   __do_splice fs/splice.c:1144 [inline]
   __do_sys_splice fs/splice.c:1350 [inline]
   __se_sys_splice+0x340/0x420 fs/splice.c:1332
   do_syscall_x64 arch/x86/entry/common.c:50 [inline]
   do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
   entry_SYSCALL_64_after_hwframe+0x66/0xd0

-> (&new->fa_lock){....}-{2:2} {
   INITIAL USE at:
                   lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623
                   __raw_write_lock_irq include/linux/rwlock_api_smp.h:196 [inline]
                   _raw_write_lock_irq+0xcf/0x110 kernel/locking/spinlock.c:316
                   fasync_remove_entry+0xfb/0x1d0 fs/fcntl.c:891
                   lease_modify+0x19c/0x380 fs/locks.c:1480
                   locks_remove_lease fs/locks.c:2713 [inline]
                   locks_remove_file+0x5d3/0x1040 fs/locks.c:2738
                   __fput+0x32b/0x890 fs/file_table.c:272
                   task_work_run+0x129/0x1a0 kernel/task_work.c:164
                   tracehook_notify_resume include/linux/tracehook.h:189 [inline]
                   exit_to_user_mode_loop+0x106/0x130 kernel/entry/common.c:181
                   exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:214
                   __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
                   syscall_exit_to_user_mode+0x5d/0x240 kernel/entry/common.c:307
                   do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:86
                   entry_SYSCALL_64_after_hwframe+0x66/0xd0
   INITIAL READ USE at:
                        lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623
                        __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:159 [inline]
                        _raw_read_lock_irqsave+0xd9/0x120 kernel/locking/spinlock.c:236
                        kill_fasync_rcu fs/fcntl.c:1014 [inline]
                        kill_fasync+0x16a/0x490 fs/fcntl.c:1035
                        wakeup_pipe_readers fs/splice.c:168 [inline]
                        splice_pipe_to_pipe fs/splice.c:1563 [inline]
                        do_splice+0x12cd/0x1790 fs/splice.c:1054
                        __do_splice fs/splice.c:1144 [inline]
                        __do_sys_splice fs/splice.c:1350 [inline]
                        __se_sys_splice+0x340/0x420 fs/splice.c:1332
                        do_syscall_x64 arch/x86/entry/common.c:50 [inline]
                        do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
                        entry_SYSCALL_64_after_hwframe+0x66/0xd0
 }
 ... key      at: [<ffffffff91456940>] fasync_insert_entry.__key+0x0/0x20
 ... acquired at:
   lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623
   __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:159 [inline]
   _raw_read_lock_irqsave+0xd9/0x120 kernel/locking/spinlock.c:236
   kill_fasync_rcu fs/fcntl.c:1014 [inline]
   kill_fasync+0x16a/0x490 fs/fcntl.c:1035
   __pass_event drivers/input/evdev.c:240 [inline]
   evdev_pass_values+0x5ad/0xb60 drivers/input/evdev.c:278
   evdev_events+0x198/0x2c0 drivers/input/evdev.c:306
   input_to_handler drivers/input/input.c:126 [inline]
   input_pass_values+0x873/0x1200 drivers/input/input.c:156
   input_handle_event+0xc9b/0x1600 drivers/input/input.c:415
   input_inject_event+0x1fc/0x300 drivers/input/input.c:487
   evdev_write+0x668/0x7c0 drivers/input/evdev.c:530
   vfs_write+0x30c/0xe50 fs/read_write.c:592
   ksys_write+0x1a2/0x2c0 fs/read_write.c:647
   do_syscall_x64 arch/x86/entry/common.c:50 [inline]
   do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
   entry_SYSCALL_64_after_hwframe+0x66/0xd0


stack backtrace:
CPU: 0 PID: 15376 Comm: syz-executor.4 Not tainted 5.15.157-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106
 print_bad_irq_dependency kernel/locking/lockdep.c:2567 [inline]
 check_irq_usage kernel/locking/lockdep.c:2806 [inline]
 check_prev_add kernel/locking/lockdep.c:3057 [inline]
 check_prevs_add kernel/locking/lockdep.c:3172 [inline]
 validate_chain+0x4d01/0x5930 kernel/locking/lockdep.c:3788
 __lock_acquire+0x1295/0x1ff0 kernel/locking/lockdep.c:5012
 lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623
 __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:159 [inline]
 _raw_read_lock_irqsave+0xd9/0x120 kernel/locking/spinlock.c:236
 kill_fasync_rcu fs/fcntl.c:1014 [inline]
 kill_fasync+0x16a/0x490 fs/fcntl.c:1035
 __pass_event drivers/input/evdev.c:240 [inline]
 evdev_pass_values+0x5ad/0xb60 drivers/input/evdev.c:278
 evdev_events+0x198/0x2c0 drivers/input/evdev.c:306
 input_to_handler drivers/input/input.c:126 [inline]
 input_pass_values+0x873/0x1200 drivers/input/input.c:156
 input_handle_event+0xc9b/0x1600 drivers/input/input.c:415
 input_inject_event+0x1fc/0x300 drivers/input/input.c:487
 evdev_write+0x668/0x7c0 drivers/input/evdev.c:530
 vfs_write+0x30c/0xe50 fs/read_write.c:592
 ksys_write+0x1a2/0x2c0 fs/read_write.c:647
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fb57be4fea9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fb57a3c20c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fb57bf7df80 RCX: 00007fb57be4fea9
RDX: 0000000000002250 RSI: 0000000020000040 RDI: 0000000000000004
RBP: 00007fb57be9c4a4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fb57bf7df80 R15: 00007ffe711bc898
 </TASK>