=====================================================
WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected
5.11.0-rc6-syzkaller #0 Not tainted
-----------------------------------------------------
syz-executor.0/24414 [HC0[0]:SC0[0]:HE0:SE1] is trying to acquire:
ffff88802a97e408 (&new->fa_lock){.+.?}-{2:2}, at: kill_fasync_rcu fs/fcntl.c:1004 [inline]
ffff88802a97e408 (&new->fa_lock){.+.?}-{2:2}, at: kill_fasync fs/fcntl.c:1025 [inline]
ffff88802a97e408 (&new->fa_lock){.+.?}-{2:2}, at: kill_fasync+0x14b/0x460 fs/fcntl.c:1018

and this task is already holding:
ffff888030439028 (&client->buffer_lock){....}-{2:2}, at: spin_lock include/linux/spinlock.h:354 [inline]
ffff888030439028 (&client->buffer_lock){....}-{2:2}, at: evdev_pass_values.part.0+0xf6/0x970 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:
 (&evdev->mutex){+.+.}-{3:3}

... which became SOFTIRQ-irq-safe at:
  lock_acquire kernel/locking/lockdep.c:5442 [inline]
  lock_acquire+0x1a8/0x720 kernel/locking/lockdep.c:5407
  __mutex_lock_common kernel/locking/mutex.c:956 [inline]
  __mutex_lock+0x134/0x1110 kernel/locking/mutex.c:1103
  evdev_open_device drivers/input/evdev.c:393 [inline]
  evdev_open+0x2f3/0x6a0 drivers/input/evdev.c:487
  chrdev_open+0x266/0x770 fs/char_dev.c:414
  do_dentry_open+0x4b9/0x11b0 fs/open.c:817
  do_open fs/namei.c:3254 [inline]
  path_openat+0x1b9a/0x2730 fs/namei.c:3371
  do_filp_open+0x17e/0x3c0 fs/namei.c:3398
  do_sys_openat2+0x16d/0x420 fs/open.c:1172
  do_sys_open fs/open.c:1188 [inline]
  __do_sys_openat fs/open.c:1204 [inline]
  __se_sys_openat fs/open.c:1199 [inline]
  __x64_sys_openat+0x13f/0x1f0 fs/open.c:1199
  do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
  entry_SYSCALL_64_after_hwframe+0x44/0xa9

to a SOFTIRQ-irq-unsafe lock:
 (&new->fa_lock){.+.?}-{2:2}

... which became SOFTIRQ-irq-unsafe at:
...
  lock_acquire kernel/locking/lockdep.c:5442 [inline]
  lock_acquire+0x1a8/0x720 kernel/locking/lockdep.c:5407
  __raw_read_lock include/linux/rwlock_api_smp.h:149 [inline]
  _raw_read_lock+0x36/0x70 kernel/locking/spinlock.c:223
  kill_fasync_rcu fs/fcntl.c:1004 [inline]
  kill_fasync fs/fcntl.c:1025 [inline]
  kill_fasync+0x14b/0x460 fs/fcntl.c:1018
  sock_wake_async+0xf1/0x160 net/socket.c:1313
  sk_wake_async include/net/sock.h:2286 [inline]
  sk_wake_async include/net/sock.h:2282 [inline]
  sk_send_sigurg net/core/sock.c:2939 [inline]
  sk_send_sigurg+0x1ae/0x300 net/core/sock.c:2935
  tcp_check_urg.isra.0+0x1f4/0x710 net/ipv4/tcp_input.c:5510
  tcp_urg net/ipv4/tcp_input.c:5551 [inline]
  tcp_rcv_established+0x106c/0x1eb0 net/ipv4/tcp_input.c:5885
  tcp_v4_do_rcv+0x5d1/0x870 net/ipv4/tcp_ipv4.c:1676
  tcp_v4_rcv+0x2d36/0x3780 net/ipv4/tcp_ipv4.c:2059
  ip_protocol_deliver_rcu+0x5c/0x8a0 net/ipv4/ip_input.c:204
  ip_local_deliver_finish+0x20a/0x370 net/ipv4/ip_input.c:231
  NF_HOOK include/linux/netfilter.h:301 [inline]
  NF_HOOK include/linux/netfilter.h:295 [inline]
  ip_local_deliver+0x1b3/0x200 net/ipv4/ip_input.c:252
  dst_input include/net/dst.h:447 [inline]
  ip_rcv_finish+0x1da/0x2f0 net/ipv4/ip_input.c:428
  NF_HOOK include/linux/netfilter.h:301 [inline]
  NF_HOOK include/linux/netfilter.h:295 [inline]
  ip_rcv+0xaa/0xd0 net/ipv4/ip_input.c:539
  __netif_receive_skb_one_core+0x114/0x180 net/core/dev.c:5323
  __netif_receive_skb+0x27/0x1c0 net/core/dev.c:5437
  process_backlog+0x232/0x6c0 net/core/dev.c:6327
  napi_poll net/core/dev.c:6805 [inline]
  net_rx_action+0x461/0xe10 net/core/dev.c:6888
  __do_softirq+0x29b/0x9f6 kernel/softirq.c:343
  run_ksoftirqd kernel/softirq.c:650 [inline]
  run_ksoftirqd+0x2d/0x50 kernel/softirq.c:642
  smpboot_thread_fn+0x655/0x9e0 kernel/smpboot.c:165
  kthread+0x3b1/0x4a0 kernel/kthread.c:292
  ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296

other info that might help us debug this:

Chain exists of:
  &evdev->mutex --> &client->buffer_lock --> &new->fa_lock

 Possible interrupt unsafe locking scenario:

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

 *** DEADLOCK ***

7 locks held by syz-executor.0/24414:
 #0: ffff888144e96110 (&evdev->mutex){+.+.}-{3:3}, at: evdev_write+0x1d3/0x760 drivers/input/evdev.c:513
 #1: ffff888144e5e230 (&dev->event_lock){-...}-{2:2}, at: input_inject_event+0xa6/0x310 drivers/input/input.c:471
 #2: ffffffff8b373da0 (rcu_read_lock){....}-{1:2}, at: is_event_supported drivers/input/input.c:53 [inline]
 #2: ffffffff8b373da0 (rcu_read_lock){....}-{1:2}, at: is_event_supported drivers/input/input.c:50 [inline]
 #2: ffffffff8b373da0 (rcu_read_lock){....}-{1:2}, at: input_inject_event+0x92/0x310 drivers/input/input.c:470
 #3: ffffffff8b373da0 (rcu_read_lock){....}-{1:2}, at: input_pass_values.part.0+0x0/0x700 drivers/input/input.c:837
 #4: ffffffff8b373da0 (rcu_read_lock){....}-{1:2}, at: evdev_events+0x59/0x3f0 drivers/input/evdev.c:296
 #5: ffff888030439028 (&client->buffer_lock){....}-{2:2}, at: spin_lock include/linux/spinlock.h:354 [inline]
 #5: ffff888030439028 (&client->buffer_lock){....}-{2:2}, at: evdev_pass_values.part.0+0xf6/0x970 drivers/input/evdev.c:261
 #6: ffffffff8b373da0 (rcu_read_lock){....}-{1:2}, at: kill_fasync+0x3d/0x460 fs/fcntl.c:1023

the dependencies between SOFTIRQ-irq-safe lock and the holding lock:
 -> (&evdev->mutex){+.+.}-{3:3} {
    HARDIRQ-ON-W at:
                      lock_acquire kernel/locking/lockdep.c:5442 [inline]
                      lock_acquire+0x1a8/0x720 kernel/locking/lockdep.c:5407
                      __mutex_lock_common kernel/locking/mutex.c:956 [inline]
                      __mutex_lock+0x134/0x1110 kernel/locking/mutex.c:1103
                      evdev_open_device drivers/input/evdev.c:393 [inline]
                      evdev_open+0x2f3/0x6a0 drivers/input/evdev.c:487
                      chrdev_open+0x266/0x770 fs/char_dev.c:414
                      do_dentry_open+0x4b9/0x11b0 fs/open.c:817
                      do_open fs/namei.c:3254 [inline]
                      path_openat+0x1b9a/0x2730 fs/namei.c:3371
                      do_filp_open+0x17e/0x3c0 fs/namei.c:3398
                      do_sys_openat2+0x16d/0x420 fs/open.c:1172
                      do_sys_open fs/open.c:1188 [inline]
                      __do_sys_openat fs/open.c:1204 [inline]
                      __se_sys_openat fs/open.c:1199 [inline]
                      __x64_sys_openat+0x13f/0x1f0 fs/open.c:1199
                      do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
                      entry_SYSCALL_64_after_hwframe+0x44/0xa9
    SOFTIRQ-ON-W at:
                      lock_acquire kernel/locking/lockdep.c:5442 [inline]
                      lock_acquire+0x1a8/0x720 kernel/locking/lockdep.c:5407
                      __mutex_lock_common kernel/locking/mutex.c:956 [inline]
                      __mutex_lock+0x134/0x1110 kernel/locking/mutex.c:1103
                      evdev_open_device drivers/input/evdev.c:393 [inline]
                      evdev_open+0x2f3/0x6a0 drivers/input/evdev.c:487
                      chrdev_open+0x266/0x770 fs/char_dev.c:414
                      do_dentry_open+0x4b9/0x11b0 fs/open.c:817
                      do_open fs/namei.c:3254 [inline]
                      path_openat+0x1b9a/0x2730 fs/namei.c:3371
                      do_filp_open+0x17e/0x3c0 fs/namei.c:3398
                      do_sys_openat2+0x16d/0x420 fs/open.c:1172
                      do_sys_open fs/open.c:1188 [inline]
                      __do_sys_openat fs/open.c:1204 [inline]
                      __se_sys_openat fs/open.c:1199 [inline]
                      __x64_sys_openat+0x13f/0x1f0 fs/open.c:1199
                      do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
                      entry_SYSCALL_64_after_hwframe+0x44/0xa9
    INITIAL USE at:
                     lock_acquire kernel/locking/lockdep.c:5442 [inline]
                     lock_acquire+0x1a8/0x720 kernel/locking/lockdep.c:5407
                     __mutex_lock_common kernel/locking/mutex.c:956 [inline]
                     __mutex_lock+0x134/0x1110 kernel/locking/mutex.c:1103
                     evdev_open_device drivers/input/evdev.c:393 [inline]
                     evdev_open+0x2f3/0x6a0 drivers/input/evdev.c:487
                     chrdev_open+0x266/0x770 fs/char_dev.c:414
                     do_dentry_open+0x4b9/0x11b0 fs/open.c:817
                     do_open fs/namei.c:3254 [inline]
                     path_openat+0x1b9a/0x2730 fs/namei.c:3371
                     do_filp_open+0x17e/0x3c0 fs/namei.c:3398
                     do_sys_openat2+0x16d/0x420 fs/open.c:1172
                     do_sys_open fs/open.c:1188 [inline]
                     __do_sys_openat fs/open.c:1204 [inline]
                     __se_sys_openat fs/open.c:1199 [inline]
                     __x64_sys_openat+0x13f/0x1f0 fs/open.c:1199
                     do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
                     entry_SYSCALL_64_after_hwframe+0x44/0xa9
  }
  ... key      at: [<ffffffff8fcdd600>] __key.6+0x0/0x40
  ... acquired at:
   __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
   _raw_spin_lock_irqsave+0x39/0x50 kernel/locking/spinlock.c:159
   evdev_set_mask drivers/input/evdev.c:980 [inline]
   evdev_do_ioctl+0x2d7/0x1820 drivers/input/evdev.c:1117
   evdev_ioctl_handler drivers/input/evdev.c:1272 [inline]
   evdev_ioctl+0x145/0x1a0 drivers/input/evdev.c:1281
   vfs_ioctl fs/ioctl.c:48 [inline]
   __do_sys_ioctl fs/ioctl.c:753 [inline]
   __se_sys_ioctl fs/ioctl.c:739 [inline]
   __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:739
   do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
   entry_SYSCALL_64_after_hwframe+0x44/0xa9

-> (&client->buffer_lock){....}-{2:2} {
   INITIAL USE at:
                   lock_acquire kernel/locking/lockdep.c:5442 [inline]
                   lock_acquire+0x1a8/0x720 kernel/locking/lockdep.c:5407
                   __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
                   _raw_spin_lock_irqsave+0x39/0x50 kernel/locking/spinlock.c:159
                   evdev_set_mask drivers/input/evdev.c:980 [inline]
                   evdev_do_ioctl+0x2d7/0x1820 drivers/input/evdev.c:1117
                   evdev_ioctl_handler drivers/input/evdev.c:1272 [inline]
                   evdev_ioctl+0x145/0x1a0 drivers/input/evdev.c:1281
                   vfs_ioctl fs/ioctl.c:48 [inline]
                   __do_sys_ioctl fs/ioctl.c:753 [inline]
                   __se_sys_ioctl fs/ioctl.c:739 [inline]
                   __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:739
                   do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
                   entry_SYSCALL_64_after_hwframe+0x44/0xa9
 }
 ... key      at: [<ffffffff8fcdd580>] __key.4+0x0/0x40
 ... acquired at:
   lock_acquire kernel/locking/lockdep.c:5442 [inline]
   lock_acquire+0x1a8/0x720 kernel/locking/lockdep.c:5407
   __raw_read_lock include/linux/rwlock_api_smp.h:149 [inline]
   _raw_read_lock+0x5b/0x70 kernel/locking/spinlock.c:223
   kill_fasync_rcu fs/fcntl.c:1004 [inline]
   kill_fasync fs/fcntl.c:1025 [inline]
   kill_fasync+0x14b/0x460 fs/fcntl.c:1018
   __pass_event drivers/input/evdev.c:240 [inline]
   evdev_pass_values.part.0+0x64e/0x970 drivers/input/evdev.c:278
   evdev_pass_values drivers/input/evdev.c:253 [inline]
   evdev_events+0x28b/0x3f0 drivers/input/evdev.c:306
   input_to_handler+0x2a0/0x4c0 drivers/input/input.c:115
   input_pass_values.part.0+0x284/0x700 drivers/input/input.c:145
   input_pass_values drivers/input/input.c:134 [inline]
   input_handle_event+0x373/0x1440 drivers/input/input.c:404
   input_inject_event+0x2f5/0x310 drivers/input/input.c:476
   evdev_write+0x430/0x760 drivers/input/evdev.c:530
   vfs_write+0x28e/0xa30 fs/read_write.c:603
   ksys_write+0x1ee/0x250 fs/read_write.c:658
   do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
   entry_SYSCALL_64_after_hwframe+0x44/0xa9


the dependencies between the lock to be acquired
 and SOFTIRQ-irq-unsafe lock:
-> (&new->fa_lock){.+.?}-{2:2} {
   HARDIRQ-ON-R at:
                    lock_acquire kernel/locking/lockdep.c:5442 [inline]
                    lock_acquire+0x1a8/0x720 kernel/locking/lockdep.c:5407
                    __raw_read_lock include/linux/rwlock_api_smp.h:149 [inline]
                    _raw_read_lock+0x5b/0x70 kernel/locking/spinlock.c:223
                    kill_fasync_rcu fs/fcntl.c:1004 [inline]
                    kill_fasync fs/fcntl.c:1025 [inline]
                    kill_fasync+0x14b/0x460 fs/fcntl.c:1018
                    sock_wake_async+0xd2/0x160 net/socket.c:1310
                    sk_wake_async include/net/sock.h:2286 [inline]
                    sk_wake_async include/net/sock.h:2282 [inline]
                    sock_def_error_report+0x2cd/0x4c0 net/core/sock.c:2891
                    sock_queue_err_skb+0x37b/0x750 net/core/skbuff.c:4587
                    __skb_complete_tx_timestamp+0x308/0x420 net/core/skbuff.c:4682
                    __skb_tstamp_tx+0x402/0x770 net/core/skbuff.c:4770
                    __dev_queue_xmit+0x1e0a/0x2dd0 net/core/dev.c:4086
                    packet_snd net/packet/af_packet.c:3006 [inline]
                    packet_sendmsg+0x2413/0x52b0 net/packet/af_packet.c:3031
                    sock_sendmsg_nosec net/socket.c:652 [inline]
                    sock_sendmsg+0xcf/0x120 net/socket.c:672
                    ____sys_sendmsg+0x331/0x810 net/socket.c:2345
                    ___sys_sendmsg+0xf3/0x170 net/socket.c:2399
                    __sys_sendmmsg+0x195/0x470 net/socket.c:2489
                    __do_sys_sendmmsg net/socket.c:2518 [inline]
                    __se_sys_sendmmsg net/socket.c:2515 [inline]
                    __x64_sys_sendmmsg+0x99/0x100 net/socket.c:2515
                    do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
                    entry_SYSCALL_64_after_hwframe+0x44/0xa9
   IN-SOFTIRQ-R at:
                    lock_acquire kernel/locking/lockdep.c:5442 [inline]
                    lock_acquire+0x1a8/0x720 kernel/locking/lockdep.c:5407
                    __raw_read_lock include/linux/rwlock_api_smp.h:149 [inline]
                    _raw_read_lock+0x36/0x70 kernel/locking/spinlock.c:223
                    kill_fasync_rcu fs/fcntl.c:1004 [inline]
                    kill_fasync fs/fcntl.c:1025 [inline]
                    kill_fasync+0x14b/0x460 fs/fcntl.c:1018
                    sock_wake_async+0xf1/0x160 net/socket.c:1313
                    sk_wake_async include/net/sock.h:2286 [inline]
                    sk_wake_async include/net/sock.h:2282 [inline]
                    sk_send_sigurg net/core/sock.c:2939 [inline]
                    sk_send_sigurg+0x1ae/0x300 net/core/sock.c:2935
                    tcp_check_urg.isra.0+0x1f4/0x710 net/ipv4/tcp_input.c:5510
                    tcp_urg net/ipv4/tcp_input.c:5551 [inline]
                    tcp_rcv_established+0x106c/0x1eb0 net/ipv4/tcp_input.c:5885
                    tcp_v4_do_rcv+0x5d1/0x870 net/ipv4/tcp_ipv4.c:1676
                    tcp_v4_rcv+0x2d36/0x3780 net/ipv4/tcp_ipv4.c:2059
                    ip_protocol_deliver_rcu+0x5c/0x8a0 net/ipv4/ip_input.c:204
                    ip_local_deliver_finish+0x20a/0x370 net/ipv4/ip_input.c:231
                    NF_HOOK include/linux/netfilter.h:301 [inline]
                    NF_HOOK include/linux/netfilter.h:295 [inline]
                    ip_local_deliver+0x1b3/0x200 net/ipv4/ip_input.c:252
                    dst_input include/net/dst.h:447 [inline]
                    ip_rcv_finish+0x1da/0x2f0 net/ipv4/ip_input.c:428
                    NF_HOOK include/linux/netfilter.h:301 [inline]
                    NF_HOOK include/linux/netfilter.h:295 [inline]
                    ip_rcv+0xaa/0xd0 net/ipv4/ip_input.c:539
                    __netif_receive_skb_one_core+0x114/0x180 net/core/dev.c:5323
                    __netif_receive_skb+0x27/0x1c0 net/core/dev.c:5437
                    process_backlog+0x232/0x6c0 net/core/dev.c:6327
                    napi_poll net/core/dev.c:6805 [inline]
                    net_rx_action+0x461/0xe10 net/core/dev.c:6888
                    __do_softirq+0x29b/0x9f6 kernel/softirq.c:343
                    run_ksoftirqd kernel/softirq.c:650 [inline]
                    run_ksoftirqd+0x2d/0x50 kernel/softirq.c:642
                    smpboot_thread_fn+0x655/0x9e0 kernel/smpboot.c:165
                    kthread+0x3b1/0x4a0 kernel/kthread.c:292
                    ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296
   SOFTIRQ-ON-R at:
                    lock_acquire kernel/locking/lockdep.c:5442 [inline]
                    lock_acquire+0x1a8/0x720 kernel/locking/lockdep.c:5407
                    __raw_read_lock include/linux/rwlock_api_smp.h:149 [inline]
                    _raw_read_lock+0x5b/0x70 kernel/locking/spinlock.c:223
                    kill_fasync_rcu fs/fcntl.c:1004 [inline]
                    kill_fasync fs/fcntl.c:1025 [inline]
                    kill_fasync+0x14b/0x460 fs/fcntl.c:1018
                    sock_wake_async+0xd2/0x160 net/socket.c:1310
                    sk_wake_async include/net/sock.h:2286 [inline]
                    sk_wake_async include/net/sock.h:2282 [inline]
                    sock_def_error_report+0x2cd/0x4c0 net/core/sock.c:2891
                    sock_queue_err_skb+0x37b/0x750 net/core/skbuff.c:4587
                    __skb_complete_tx_timestamp+0x308/0x420 net/core/skbuff.c:4682
                    __skb_tstamp_tx+0x402/0x770 net/core/skbuff.c:4770
                    __dev_queue_xmit+0x1e0a/0x2dd0 net/core/dev.c:4086
                    packet_snd net/packet/af_packet.c:3006 [inline]
                    packet_sendmsg+0x2413/0x52b0 net/packet/af_packet.c:3031
                    sock_sendmsg_nosec net/socket.c:652 [inline]
                    sock_sendmsg+0xcf/0x120 net/socket.c:672
                    ____sys_sendmsg+0x331/0x810 net/socket.c:2345
                    ___sys_sendmsg+0xf3/0x170 net/socket.c:2399
                    __sys_sendmmsg+0x195/0x470 net/socket.c:2489
                    __do_sys_sendmmsg net/socket.c:2518 [inline]
                    __se_sys_sendmmsg net/socket.c:2515 [inline]
                    __x64_sys_sendmmsg+0x99/0x100 net/socket.c:2515
                    do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
                    entry_SYSCALL_64_after_hwframe+0x44/0xa9
   INITIAL USE at:
                   lock_acquire kernel/locking/lockdep.c:5442 [inline]
                   lock_acquire+0x1a8/0x720 kernel/locking/lockdep.c:5407
                   __raw_write_lock_irq include/linux/rwlock_api_smp.h:196 [inline]
                   _raw_write_lock_irq+0x32/0x50 kernel/locking/spinlock.c:311
                   fasync_remove_entry+0xb6/0x1f0 fs/fcntl.c:882
                   fasync_helper+0x9e/0xb0 fs/fcntl.c:985
                   sock_fasync+0x94/0x140 net/socket.c:1281
                   __fput+0x70d/0x920 fs/file_table.c:277
                   task_work_run+0xdd/0x190 kernel/task_work.c:140
                   tracehook_notify_resume include/linux/tracehook.h:189 [inline]
                   exit_to_user_mode_loop kernel/entry/common.c:174 [inline]
                   exit_to_user_mode_prepare+0x249/0x250 kernel/entry/common.c:201
                   __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline]
                   syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:302
                   entry_SYSCALL_64_after_hwframe+0x44/0xa9
   INITIAL READ USE at:
                        lock_acquire kernel/locking/lockdep.c:5442 [inline]
                        lock_acquire+0x1a8/0x720 kernel/locking/lockdep.c:5407
                        __raw_read_lock include/linux/rwlock_api_smp.h:149 [inline]
                        _raw_read_lock+0x5b/0x70 kernel/locking/spinlock.c:223
                        kill_fasync_rcu fs/fcntl.c:1004 [inline]
                        kill_fasync fs/fcntl.c:1025 [inline]
                        kill_fasync+0x14b/0x460 fs/fcntl.c:1018
                        sock_wake_async+0xd2/0x160 net/socket.c:1310
                        sk_wake_async include/net/sock.h:2286 [inline]
                        sk_wake_async include/net/sock.h:2282 [inline]
                        sock_def_error_report+0x2cd/0x4c0 net/core/sock.c:2891
                        sock_queue_err_skb+0x37b/0x750 net/core/skbuff.c:4587
                        __skb_complete_tx_timestamp+0x308/0x420 net/core/skbuff.c:4682
                        __skb_tstamp_tx+0x402/0x770 net/core/skbuff.c:4770
                        __dev_queue_xmit+0x1e0a/0x2dd0 net/core/dev.c:4086
                        packet_snd net/packet/af_packet.c:3006 [inline]
                        packet_sendmsg+0x2413/0x52b0 net/packet/af_packet.c:3031
                        sock_sendmsg_nosec net/socket.c:652 [inline]
                        sock_sendmsg+0xcf/0x120 net/socket.c:672
                        ____sys_sendmsg+0x331/0x810 net/socket.c:2345
                        ___sys_sendmsg+0xf3/0x170 net/socket.c:2399
                        __sys_sendmmsg+0x195/0x470 net/socket.c:2489
                        __do_sys_sendmmsg net/socket.c:2518 [inline]
                        __se_sys_sendmmsg net/socket.c:2515 [inline]
                        __x64_sys_sendmmsg+0x99/0x100 net/socket.c:2515
                        do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
                        entry_SYSCALL_64_after_hwframe+0x44/0xa9
 }
 ... key      at: [<ffffffff8f219980>] __key.0+0x0/0x40
 ... acquired at:
   lock_acquire kernel/locking/lockdep.c:5442 [inline]
   lock_acquire+0x1a8/0x720 kernel/locking/lockdep.c:5407
   __raw_read_lock include/linux/rwlock_api_smp.h:149 [inline]
   _raw_read_lock+0x5b/0x70 kernel/locking/spinlock.c:223
   kill_fasync_rcu fs/fcntl.c:1004 [inline]
   kill_fasync fs/fcntl.c:1025 [inline]
   kill_fasync+0x14b/0x460 fs/fcntl.c:1018
   __pass_event drivers/input/evdev.c:240 [inline]
   evdev_pass_values.part.0+0x64e/0x970 drivers/input/evdev.c:278
   evdev_pass_values drivers/input/evdev.c:253 [inline]
   evdev_events+0x28b/0x3f0 drivers/input/evdev.c:306
   input_to_handler+0x2a0/0x4c0 drivers/input/input.c:115
   input_pass_values.part.0+0x284/0x700 drivers/input/input.c:145
   input_pass_values drivers/input/input.c:134 [inline]
   input_handle_event+0x373/0x1440 drivers/input/input.c:404
   input_inject_event+0x2f5/0x310 drivers/input/input.c:476
   evdev_write+0x430/0x760 drivers/input/evdev.c:530
   vfs_write+0x28e/0xa30 fs/read_write.c:603
   ksys_write+0x1ee/0x250 fs/read_write.c:658
   do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
   entry_SYSCALL_64_after_hwframe+0x44/0xa9


stack backtrace:
CPU: 0 PID: 24414 Comm: syz-executor.0 Not tainted 5.11.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x107/0x163 lib/dump_stack.c:120
 print_bad_irq_dependency kernel/locking/lockdep.c:2452 [inline]
 check_irq_usage.cold+0x50d/0x744 kernel/locking/lockdep.c:2681
 check_prev_add kernel/locking/lockdep.c:2872 [inline]
 check_prevs_add kernel/locking/lockdep.c:2993 [inline]
 validate_chain kernel/locking/lockdep.c:3608 [inline]
 __lock_acquire+0x2b3e/0x54f0 kernel/locking/lockdep.c:4832
 lock_acquire kernel/locking/lockdep.c:5442 [inline]
 lock_acquire+0x1a8/0x720 kernel/locking/lockdep.c:5407
 __raw_read_lock include/linux/rwlock_api_smp.h:149 [inline]
 _raw_read_lock+0x5b/0x70 kernel/locking/spinlock.c:223
 kill_fasync_rcu fs/fcntl.c:1004 [inline]
 kill_fasync fs/fcntl.c:1025 [inline]
 kill_fasync+0x14b/0x460 fs/fcntl.c:1018
 __pass_event drivers/input/evdev.c:240 [inline]
 evdev_pass_values.part.0+0x64e/0x970 drivers/input/evdev.c:278
 evdev_pass_values drivers/input/evdev.c:253 [inline]
 evdev_events+0x28b/0x3f0 drivers/input/evdev.c:306
 input_to_handler+0x2a0/0x4c0 drivers/input/input.c:115
 input_pass_values.part.0+0x284/0x700 drivers/input/input.c:145
 input_pass_values drivers/input/input.c:134 [inline]
 input_handle_event+0x373/0x1440 drivers/input/input.c:404
 input_inject_event+0x2f5/0x310 drivers/input/input.c:476
 evdev_write+0x430/0x760 drivers/input/evdev.c:530
 vfs_write+0x28e/0xa30 fs/read_write.c:603
 ksys_write+0x1ee/0x250 fs/read_write.c:658
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x465b09
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fb491639188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465b09
RDX: 0000000000000373 RSI: 0000000020000040 RDI: 0000000000000003
RBP: 00000000004b069f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60
R13: 0000000000a9fb1f R14: 00007fb491639300 R15: 0000000000022000