===================================================== WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected 5.12.0-rc7-syzkaller #0 Not tainted ----------------------------------------------------- syz-executor.4/22100 [HC0[0]:SC0[0]:HE0:SE1] is trying to acquire: ffff88802d392360 (&new->fa_lock){.+.?}-{2:2}, at: kill_fasync_rcu fs/fcntl.c:1012 [inline] ffff88802d392360 (&new->fa_lock){.+.?}-{2:2}, at: kill_fasync fs/fcntl.c:1033 [inline] ffff88802d392360 (&new->fa_lock){.+.?}-{2:2}, at: kill_fasync+0x14b/0x460 fs/fcntl.c:1026 and this task is already holding: ffff88801f310028 (&client->buffer_lock){....}-{2:2}, at: spin_lock include/linux/spinlock.h:354 [inline] ffff88801f310028 (&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:5511 [inline] lock_acquire+0x1ab/0x740 kernel/locking/lockdep.c:5476 __mutex_lock_common kernel/locking/mutex.c:949 [inline] __mutex_lock+0x139/0x1120 kernel/locking/mutex.c:1096 evdev_mark_dead drivers/input/evdev.c:1314 [inline] evdev_cleanup+0x21/0x1a0 drivers/input/evdev.c:1323 evdev_disconnect+0x45/0xb0 drivers/input/evdev.c:1407 __input_unregister_device+0x206/0x470 drivers/input/input.c:2189 input_unregister_device+0xb4/0xf0 drivers/input/input.c:2379 uinput_destroy_device+0x1f4/0x260 drivers/input/misc/uinput.c:298 uinput_release+0x37/0x50 drivers/input/misc/uinput.c:710 __fput+0x288/0x920 fs/file_table.c:280 task_work_run+0xdd/0x1a0 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:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:301 entry_SYSCALL_64_after_hwframe+0x44/0xae to a SOFTIRQ-irq-unsafe lock: (&new->fa_lock){.+.?}-{2:2} ... which became SOFTIRQ-irq-unsafe at: ... lock_acquire kernel/locking/lockdep.c:5511 [inline] lock_acquire+0x1ab/0x740 kernel/locking/lockdep.c:5476 __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:1012 [inline] kill_fasync fs/fcntl.c:1033 [inline] kill_fasync+0x14b/0x460 fs/fcntl.c:1026 sock_wake_async+0xd2/0x160 net/socket.c:1312 sk_wake_async include/net/sock.h:2305 [inline] sk_wake_async include/net/sock.h:2301 [inline] sock_def_readable+0x2cb/0x4c0 net/core/sock.c:2912 tcp_data_ready+0x106/0x540 net/ipv4/tcp_input.c:4928 tcp_data_queue+0x1a81/0x4b30 net/ipv4/tcp_input.c:4993 tcp_rcv_established+0x841/0x1eb0 net/ipv4/tcp_input.c:5881 tcp_v4_do_rcv+0x5d1/0x870 net/ipv4/tcp_ipv4.c:1679 tcp_v4_rcv+0x3298/0x3950 net/ipv4/tcp_ipv4.c:2062 ip_protocol_deliver_rcu+0x5c/0xa20 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:458 [inline] ip_rcv_finish+0x1da/0x2f0 net/ipv4/ip_input.c:429 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:540 __netif_receive_skb_one_core+0x114/0x180 net/core/dev.c:5384 __netif_receive_skb+0x27/0x1c0 net/core/dev.c:5498 process_backlog+0x232/0x6c0 net/core/dev.c:6366 __napi_poll+0xaf/0x440 net/core/dev.c:6913 napi_poll net/core/dev.c:6980 [inline] net_rx_action+0x801/0xb40 net/core/dev.c:7067 __do_softirq+0x29b/0x9f6 kernel/softirq.c:345 run_ksoftirqd kernel/softirq.c:652 [inline] run_ksoftirqd+0x2d/0x60 kernel/softirq.c:644 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:294 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); lock(&evdev->mutex); *** DEADLOCK *** 7 locks held by syz-executor.4/22100: #0: ffff88801cecb110 (&evdev->mutex){+.+.}-{3:3}, at: evdev_write+0x1d3/0x760 drivers/input/evdev.c:513 #1: ffff88801ca98230 (&dev->event_lock){-.-.}-{2:2}, at: input_inject_event+0xa6/0x310 drivers/input/input.c:471 #2: ffffffff8bf74360 (rcu_read_lock){....}-{1:2}, at: is_event_supported drivers/input/input.c:53 [inline] #2: ffffffff8bf74360 (rcu_read_lock){....}-{1:2}, at: is_event_supported drivers/input/input.c:50 [inline] #2: ffffffff8bf74360 (rcu_read_lock){....}-{1:2}, at: input_inject_event+0x92/0x310 drivers/input/input.c:470 #3: ffffffff8bf74360 (rcu_read_lock){....}-{1:2}, at: input_pass_values.part.0+0x0/0x700 drivers/input/input.c:837 #4: ffffffff8bf74360 (rcu_read_lock){....}-{1:2}, at: evdev_events+0x59/0x3f0 drivers/input/evdev.c:296 #5: ffff88801f310028 (&client->buffer_lock){....}-{2:2}, at: spin_lock include/linux/spinlock.h:354 [inline] #5: ffff88801f310028 (&client->buffer_lock){....}-{2:2}, at: evdev_pass_values.part.0+0xf6/0x970 drivers/input/evdev.c:261 #6: ffffffff8bf74360 (rcu_read_lock){....}-{1:2}, at: kill_fasync+0x3d/0x460 fs/fcntl.c:1031 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:5511 [inline] lock_acquire+0x1ab/0x740 kernel/locking/lockdep.c:5476 __mutex_lock_common kernel/locking/mutex.c:949 [inline] __mutex_lock+0x139/0x1120 kernel/locking/mutex.c:1096 evdev_mark_dead drivers/input/evdev.c:1314 [inline] evdev_cleanup+0x21/0x1a0 drivers/input/evdev.c:1323 evdev_disconnect+0x45/0xb0 drivers/input/evdev.c:1407 __input_unregister_device+0x206/0x470 drivers/input/input.c:2189 input_unregister_device+0xb4/0xf0 drivers/input/input.c:2379 uinput_destroy_device+0x1f4/0x260 drivers/input/misc/uinput.c:298 uinput_release+0x37/0x50 drivers/input/misc/uinput.c:710 __fput+0x288/0x920 fs/file_table.c:280 task_work_run+0xdd/0x1a0 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:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:301 entry_SYSCALL_64_after_hwframe+0x44/0xae SOFTIRQ-ON-W at: lock_acquire kernel/locking/lockdep.c:5511 [inline] lock_acquire+0x1ab/0x740 kernel/locking/lockdep.c:5476 __mutex_lock_common kernel/locking/mutex.c:949 [inline] __mutex_lock+0x139/0x1120 kernel/locking/mutex.c:1096 evdev_mark_dead drivers/input/evdev.c:1314 [inline] evdev_cleanup+0x21/0x1a0 drivers/input/evdev.c:1323 evdev_disconnect+0x45/0xb0 drivers/input/evdev.c:1407 __input_unregister_device+0x206/0x470 drivers/input/input.c:2189 input_unregister_device+0xb4/0xf0 drivers/input/input.c:2379 uinput_destroy_device+0x1f4/0x260 drivers/input/misc/uinput.c:298 uinput_release+0x37/0x50 drivers/input/misc/uinput.c:710 __fput+0x288/0x920 fs/file_table.c:280 task_work_run+0xdd/0x1a0 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:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:301 entry_SYSCALL_64_after_hwframe+0x44/0xae INITIAL USE at: lock_acquire kernel/locking/lockdep.c:5511 [inline] lock_acquire+0x1ab/0x740 kernel/locking/lockdep.c:5476 __mutex_lock_common kernel/locking/mutex.c:949 [inline] __mutex_lock+0x139/0x1120 kernel/locking/mutex.c:1096 evdev_mark_dead drivers/input/evdev.c:1314 [inline] evdev_cleanup+0x21/0x1a0 drivers/input/evdev.c:1323 evdev_disconnect+0x45/0xb0 drivers/input/evdev.c:1407 __input_unregister_device+0x206/0x470 drivers/input/input.c:2189 input_unregister_device+0xb4/0xf0 drivers/input/input.c:2379 uinput_destroy_device+0x1f4/0x260 drivers/input/misc/uinput.c:298 uinput_release+0x37/0x50 drivers/input/misc/uinput.c:710 __fput+0x288/0x920 fs/file_table.c:280 task_work_run+0xdd/0x1a0 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:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:301 entry_SYSCALL_64_after_hwframe+0x44/0xae } ... key at: [] __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_clk_type drivers/input/evdev.c:201 [inline] evdev_do_ioctl+0x726/0x1820 drivers/input/evdev.c:1126 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+0x44/0xae -> (&client->buffer_lock){....}-{2:2} { INITIAL USE at: lock_acquire kernel/locking/lockdep.c:5511 [inline] lock_acquire+0x1ab/0x740 kernel/locking/lockdep.c:5476 __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_clk_type drivers/input/evdev.c:201 [inline] evdev_do_ioctl+0x726/0x1820 drivers/input/evdev.c:1126 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+0x44/0xae } ... key at: [] __key.4+0x0/0x40 ... acquired at: lock_acquire kernel/locking/lockdep.c:5511 [inline] lock_acquire+0x1ab/0x740 kernel/locking/lockdep.c:5476 __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:1012 [inline] kill_fasync fs/fcntl.c:1033 [inline] kill_fasync+0x14b/0x460 fs/fcntl.c:1026 __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+0x44/0xae 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:5511 [inline] lock_acquire+0x1ab/0x740 kernel/locking/lockdep.c:5476 __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:1012 [inline] kill_fasync fs/fcntl.c:1033 [inline] kill_fasync+0x14b/0x460 fs/fcntl.c:1026 sock_wake_async+0xd2/0x160 net/socket.c:1312 sk_wake_async include/net/sock.h:2305 [inline] sk_wake_async include/net/sock.h:2301 [inline] sock_def_readable+0x2cb/0x4c0 net/core/sock.c:2912 unix_dgram_sendmsg+0xff9/0x1a80 net/unix/af_unix.c:1800 sock_sendmsg_nosec net/socket.c:654 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:674 ____sys_sendmsg+0x331/0x810 net/socket.c:2350 ___sys_sendmsg+0xf3/0x170 net/socket.c:2404 __sys_sendmmsg+0x195/0x470 net/socket.c:2490 __do_sys_sendmmsg net/socket.c:2519 [inline] __se_sys_sendmmsg net/socket.c:2516 [inline] __x64_sys_sendmmsg+0x99/0x100 net/socket.c:2516 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae IN-SOFTIRQ-R at: lock_acquire kernel/locking/lockdep.c:5511 [inline] lock_acquire+0x1ab/0x740 kernel/locking/lockdep.c:5476 __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:1012 [inline] kill_fasync fs/fcntl.c:1033 [inline] kill_fasync+0x14b/0x460 fs/fcntl.c:1026 sock_wake_async+0xd2/0x160 net/socket.c:1312 sk_wake_async include/net/sock.h:2305 [inline] sk_wake_async include/net/sock.h:2301 [inline] sock_def_readable+0x2cb/0x4c0 net/core/sock.c:2912 tcp_data_ready+0x106/0x540 net/ipv4/tcp_input.c:4928 tcp_data_queue+0x1a81/0x4b30 net/ipv4/tcp_input.c:4993 tcp_rcv_established+0x841/0x1eb0 net/ipv4/tcp_input.c:5881 tcp_v4_do_rcv+0x5d1/0x870 net/ipv4/tcp_ipv4.c:1679 tcp_v4_rcv+0x3298/0x3950 net/ipv4/tcp_ipv4.c:2062 ip_protocol_deliver_rcu+0x5c/0xa20 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:458 [inline] ip_rcv_finish+0x1da/0x2f0 net/ipv4/ip_input.c:429 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:540 __netif_receive_skb_one_core+0x114/0x180 net/core/dev.c:5384 __netif_receive_skb+0x27/0x1c0 net/core/dev.c:5498 process_backlog+0x232/0x6c0 net/core/dev.c:6366 __napi_poll+0xaf/0x440 net/core/dev.c:6913 napi_poll net/core/dev.c:6980 [inline] net_rx_action+0x801/0xb40 net/core/dev.c:7067 __do_softirq+0x29b/0x9f6 kernel/softirq.c:345 run_ksoftirqd kernel/softirq.c:652 [inline] run_ksoftirqd+0x2d/0x60 kernel/softirq.c:644 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:294 SOFTIRQ-ON-R at: lock_acquire kernel/locking/lockdep.c:5511 [inline] lock_acquire+0x1ab/0x740 kernel/locking/lockdep.c:5476 __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:1012 [inline] kill_fasync fs/fcntl.c:1033 [inline] kill_fasync+0x14b/0x460 fs/fcntl.c:1026 sock_wake_async+0xd2/0x160 net/socket.c:1312 sk_wake_async include/net/sock.h:2305 [inline] sk_wake_async include/net/sock.h:2301 [inline] sock_def_readable+0x2cb/0x4c0 net/core/sock.c:2912 unix_dgram_sendmsg+0xff9/0x1a80 net/unix/af_unix.c:1800 sock_sendmsg_nosec net/socket.c:654 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:674 ____sys_sendmsg+0x331/0x810 net/socket.c:2350 ___sys_sendmsg+0xf3/0x170 net/socket.c:2404 __sys_sendmmsg+0x195/0x470 net/socket.c:2490 __do_sys_sendmmsg net/socket.c:2519 [inline] __se_sys_sendmmsg net/socket.c:2516 [inline] __x64_sys_sendmmsg+0x99/0x100 net/socket.c:2516 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae INITIAL USE at: lock_acquire kernel/locking/lockdep.c:5511 [inline] lock_acquire+0x1ab/0x740 kernel/locking/lockdep.c:5476 __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:890 fasync_helper+0x9e/0xb0 fs/fcntl.c:993 sock_fasync+0x94/0x140 net/socket.c:1283 __fput+0x712/0x920 fs/file_table.c:277 task_work_run+0xdd/0x1a0 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:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:301 entry_SYSCALL_64_after_hwframe+0x44/0xae INITIAL READ USE at: lock_acquire kernel/locking/lockdep.c:5511 [inline] lock_acquire+0x1ab/0x740 kernel/locking/lockdep.c:5476 __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:1012 [inline] kill_fasync fs/fcntl.c:1033 [inline] kill_fasync+0x14b/0x460 fs/fcntl.c:1026 sock_wake_async+0xd2/0x160 net/socket.c:1312 sk_wake_async include/net/sock.h:2305 [inline] sk_wake_async include/net/sock.h:2301 [inline] sock_def_readable+0x2cb/0x4c0 net/core/sock.c:2912 unix_dgram_sendmsg+0xff9/0x1a80 net/unix/af_unix.c:1800 sock_sendmsg_nosec net/socket.c:654 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:674 ____sys_sendmsg+0x331/0x810 net/socket.c:2350 ___sys_sendmsg+0xf3/0x170 net/socket.c:2404 __sys_sendmmsg+0x195/0x470 net/socket.c:2490 __do_sys_sendmmsg net/socket.c:2519 [inline] __se_sys_sendmmsg net/socket.c:2516 [inline] __x64_sys_sendmmsg+0x99/0x100 net/socket.c:2516 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae } ... key at: [] __key.0+0x0/0x40 ... acquired at: lock_acquire kernel/locking/lockdep.c:5511 [inline] lock_acquire+0x1ab/0x740 kernel/locking/lockdep.c:5476 __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:1012 [inline] kill_fasync fs/fcntl.c:1033 [inline] kill_fasync+0x14b/0x460 fs/fcntl.c:1026 __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+0x44/0xae stack backtrace: CPU: 1 PID: 22100 Comm: syz-executor.4 Not tainted 5.12.0-rc7-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+0x141/0x1d7 lib/dump_stack.c:120 print_bad_irq_dependency kernel/locking/lockdep.c:2461 [inline] check_irq_usage.cold+0x50d/0x744 kernel/locking/lockdep.c:2690 check_prev_add kernel/locking/lockdep.c:2941 [inline] check_prevs_add kernel/locking/lockdep.c:3060 [inline] validate_chain kernel/locking/lockdep.c:3675 [inline] __lock_acquire+0x2b2c/0x54c0 kernel/locking/lockdep.c:4901 lock_acquire kernel/locking/lockdep.c:5511 [inline] lock_acquire+0x1ab/0x740 kernel/locking/lockdep.c:5476 __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:1012 [inline] kill_fasync fs/fcntl.c:1033 [inline] kill_fasync+0x14b/0x460 fs/fcntl.c:1026 __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+0x44/0xae RIP: 0033:0x466459 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:00007f66c41cc188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000466459 RDX: 00000000000002b8 RSI: 0000000020000040 RDI: 0000000000000003 RBP: 00000000004bf9fb R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60 R13: 0000000000a9fb1f R14: 00007f66c41cc300 R15: 0000000000022000