===================================================== WARNING: HARDIRQ-safe -> HARDIRQ-unsafe lock order detected 6.5.0-rc1-syzkaller-00248-gb6e6cc1f78c7 #0 Not tainted ----------------------------------------------------- syz-executor425/5025 [HC0[0]:SC0[0]:HE0:SE1] is trying to acquire: ffff88802c77d0c0 (&new->fa_lock){....}-{2:2}, at: kill_fasync_rcu fs/fcntl.c:997 [inline] ffff88802c77d0c0 (&new->fa_lock){....}-{2:2}, at: kill_fasync fs/fcntl.c:1018 [inline] ffff88802c77d0c0 (&new->fa_lock){....}-{2:2}, at: kill_fasync+0x13a/0x4f0 fs/fcntl.c:1011 and this task is already holding: ffff888015aa7028 (&client->buffer_lock){....}-{2:2}, at: spin_lock include/linux/spinlock.h:351 [inline] ffff888015aa7028 (&client->buffer_lock){....}-{2:2}, at: evdev_pass_values+0x10e/0x9b0 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 HARDIRQ-irq-safe lock: (&dev->event_lock#2){-...}-{2:2} ... which became HARDIRQ-irq-safe at: lock_acquire kernel/locking/lockdep.c:5761 [inline] lock_acquire+0x1ae/0x510 kernel/locking/lockdep.c:5726 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x3a/0x50 kernel/locking/spinlock.c:162 input_event drivers/input/input.c:434 [inline] input_event+0x70/0xa0 drivers/input/input.c:427 input_report_key include/linux/input.h:425 [inline] psmouse_report_standard_buttons+0x30/0x80 drivers/input/mouse/psmouse-base.c:128 psmouse_report_standard_packet drivers/input/mouse/psmouse-base.c:146 [inline] psmouse_process_byte+0x39c/0x8a0 drivers/input/mouse/psmouse-base.c:237 psmouse_handle_byte+0x41/0x560 drivers/input/mouse/psmouse-base.c:279 psmouse_receive_byte+0x243/0xe10 drivers/input/mouse/psmouse-base.c:426 ps2_interrupt+0x1fe/0x5a0 drivers/input/serio/libps2.c:613 serio_interrupt+0x8d/0x150 drivers/input/serio/serio.c:998 i8042_interrupt+0x3f2/0x8a0 drivers/input/serio/i8042.c:606 __handle_irq_event_percpu+0x22a/0x740 kernel/irq/handle.c:158 handle_irq_event_percpu kernel/irq/handle.c:193 [inline] handle_irq_event+0xab/0x1e0 kernel/irq/handle.c:210 handle_edge_irq+0x261/0xcf0 kernel/irq/chip.c:834 generic_handle_irq_desc include/linux/irqdesc.h:161 [inline] handle_irq arch/x86/kernel/irq.c:238 [inline] __common_interrupt+0x9f/0x220 arch/x86/kernel/irq.c:257 common_interrupt+0xa9/0xd0 arch/x86/kernel/irq.c:247 asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:636 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] _raw_spin_unlock_irqrestore+0x31/0x70 kernel/locking/spinlock.c:194 spin_unlock_irqrestore include/linux/spinlock.h:406 [inline] i8042_command drivers/input/serio/i8042.c:356 [inline] i8042_aux_write+0x11a/0x180 drivers/input/serio/i8042.c:391 serio_write include/linux/serio.h:125 [inline] ps2_do_sendbyte+0x264/0x6e0 drivers/input/serio/libps2.c:58 ps2_sendbyte+0x59/0x140 drivers/input/serio/libps2.c:113 cypress_ps2_sendbyte+0x2e/0x160 drivers/input/mouse/cypress_ps2.c:42 cypress_ps2_read_cmd_status drivers/input/mouse/cypress_ps2.c:116 [inline] cypress_send_ext_cmd+0x1e3/0x8c0 drivers/input/mouse/cypress_ps2.c:189 cypress_detect+0x8c/0x1a0 drivers/input/mouse/cypress_ps2.c:205 psmouse_do_detect drivers/input/mouse/psmouse-base.c:1006 [inline] psmouse_try_protocol+0x214/0x370 drivers/input/mouse/psmouse-base.c:1020 psmouse_extensions+0x616/0x960 drivers/input/mouse/psmouse-base.c:1143 psmouse_switch_protocol+0x528/0x740 drivers/input/mouse/psmouse-base.c:1537 psmouse_connect+0x5cc/0xf70 drivers/input/mouse/psmouse-base.c:1626 serio_connect_driver drivers/input/serio/serio.c:44 [inline] serio_driver_probe+0x71/0xa0 drivers/input/serio/serio.c:775 call_driver_probe drivers/base/dd.c:579 [inline] really_probe+0x234/0xc90 drivers/base/dd.c:658 __driver_probe_device+0x1de/0x4b0 drivers/base/dd.c:798 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:828 __driver_attach+0x274/0x570 drivers/base/dd.c:1214 bus_for_each_dev+0x13c/0x1d0 drivers/base/bus.c:368 serio_attach_driver drivers/input/serio/serio.c:804 [inline] serio_handle_event+0x2b8/0xa90 drivers/input/serio/serio.c:224 process_one_work+0xaa2/0x16f0 kernel/workqueue.c:2597 worker_thread+0x687/0x1110 kernel/workqueue.c:2748 kthread+0x33a/0x430 kernel/kthread.c:389 ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:296 to a HARDIRQ-irq-unsafe lock: (tasklist_lock){.+.+}-{2:2} ... which became HARDIRQ-irq-unsafe at: ... lock_acquire kernel/locking/lockdep.c:5761 [inline] lock_acquire+0x1ae/0x510 kernel/locking/lockdep.c:5726 __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline] _raw_read_lock+0x5f/0x70 kernel/locking/spinlock.c:228 do_wait+0x2a9/0xc70 kernel/exit.c:1607 kernel_wait+0xa0/0x150 kernel/exit.c:1797 call_usermodehelper_exec_sync kernel/umh.c:137 [inline] call_usermodehelper_exec_work+0xf1/0x170 kernel/umh.c:164 process_one_work+0xaa2/0x16f0 kernel/workqueue.c:2597 worker_thread+0x687/0x1110 kernel/workqueue.c:2748 kthread+0x33a/0x430 kernel/kthread.c:389 ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:296 other info that might help us debug this: Chain exists of: &dev->event_lock#2 --> &client->buffer_lock --> tasklist_lock Possible interrupt unsafe locking scenario: CPU0 CPU1 ---- ---- lock(tasklist_lock); local_irq_disable(); lock(&dev->event_lock#2); lock(&client->buffer_lock); lock(&dev->event_lock#2); *** DEADLOCK *** 7 locks held by syz-executor425/5025: #0: ffff888023623110 (&evdev->mutex){+.+.}-{3:3}, at: evdev_write+0x201/0x750 drivers/input/evdev.c:513 #1: ffff888013bad230 (&dev->event_lock#2){-...}-{2:2}, at: input_inject_event+0xa4/0x380 drivers/input/input.c:460 #2: ffffffff8c9a6440 (rcu_read_lock){....}-{1:2}, at: is_event_supported drivers/input/input.c:67 [inline] #2: ffffffff8c9a6440 (rcu_read_lock){....}-{1:2}, at: input_inject_event+0x8b/0x380 drivers/input/input.c:459 #3: ffffffff8c9a6440 (rcu_read_lock){....}-{1:2}, at: input_pass_values.part.0+0x0/0x7a0 drivers/input/input.c:795 #4: ffffffff8c9a6440 (rcu_read_lock){....}-{1:2}, at: evdev_events+0x59/0x390 drivers/input/evdev.c:296 #5: ffff888015aa7028 (&client->buffer_lock){....}-{2:2}, at: spin_lock include/linux/spinlock.h:351 [inline] #5: ffff888015aa7028 (&client->buffer_lock){....}-{2:2}, at: evdev_pass_values+0x10e/0x9b0 drivers/input/evdev.c:261 #6: ffffffff8c9a6440 (rcu_read_lock){....}-{1:2}, at: kill_fasync+0x46/0x4f0 fs/fcntl.c:1016 the dependencies between HARDIRQ-irq-safe lock and the holding lock: -> (&dev->event_lock#2){-...}-{2:2} { IN-HARDIRQ-W at: lock_acquire kernel/locking/lockdep.c:5761 [inline] lock_acquire+0x1ae/0x510 kernel/locking/lockdep.c:5726 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x3a/0x50 kernel/locking/spinlock.c:162 input_event drivers/input/input.c:434 [inline] input_event+0x70/0xa0 drivers/input/input.c:427 input_report_key include/linux/input.h:425 [inline] psmouse_report_standard_buttons+0x30/0x80 drivers/input/mouse/psmouse-base.c:128 psmouse_report_standard_packet drivers/input/mouse/psmouse-base.c:146 [inline] psmouse_process_byte+0x39c/0x8a0 drivers/input/mouse/psmouse-base.c:237 psmouse_handle_byte+0x41/0x560 drivers/input/mouse/psmouse-base.c:279 psmouse_receive_byte+0x243/0xe10 drivers/input/mouse/psmouse-base.c:426 ps2_interrupt+0x1fe/0x5a0 drivers/input/serio/libps2.c:613 serio_interrupt+0x8d/0x150 drivers/input/serio/serio.c:998 i8042_interrupt+0x3f2/0x8a0 drivers/input/serio/i8042.c:606 __handle_irq_event_percpu+0x22a/0x740 kernel/irq/handle.c:158 handle_irq_event_percpu kernel/irq/handle.c:193 [inline] handle_irq_event+0xab/0x1e0 kernel/irq/handle.c:210 handle_edge_irq+0x261/0xcf0 kernel/irq/chip.c:834 generic_handle_irq_desc include/linux/irqdesc.h:161 [inline] handle_irq arch/x86/kernel/irq.c:238 [inline] __common_interrupt+0x9f/0x220 arch/x86/kernel/irq.c:257 common_interrupt+0xa9/0xd0 arch/x86/kernel/irq.c:247 asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:636 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] _raw_spin_unlock_irqrestore+0x31/0x70 kernel/locking/spinlock.c:194 spin_unlock_irqrestore include/linux/spinlock.h:406 [inline] i8042_command drivers/input/serio/i8042.c:356 [inline] i8042_aux_write+0x11a/0x180 drivers/input/serio/i8042.c:391 serio_write include/linux/serio.h:125 [inline] ps2_do_sendbyte+0x264/0x6e0 drivers/input/serio/libps2.c:58 ps2_sendbyte+0x59/0x140 drivers/input/serio/libps2.c:113 cypress_ps2_sendbyte+0x2e/0x160 drivers/input/mouse/cypress_ps2.c:42 cypress_ps2_read_cmd_status drivers/input/mouse/cypress_ps2.c:116 [inline] cypress_send_ext_cmd+0x1e3/0x8c0 drivers/input/mouse/cypress_ps2.c:189 cypress_detect+0x8c/0x1a0 drivers/input/mouse/cypress_ps2.c:205 psmouse_do_detect drivers/input/mouse/psmouse-base.c:1006 [inline] psmouse_try_protocol+0x214/0x370 drivers/input/mouse/psmouse-base.c:1020 psmouse_extensions+0x616/0x960 drivers/input/mouse/psmouse-base.c:1143 psmouse_switch_protocol+0x528/0x740 drivers/input/mouse/psmouse-base.c:1537 psmouse_connect+0x5cc/0xf70 drivers/input/mouse/psmouse-base.c:1626 serio_connect_driver drivers/input/serio/serio.c:44 [inline] serio_driver_probe+0x71/0xa0 drivers/input/serio/serio.c:775 call_driver_probe drivers/base/dd.c:579 [inline] really_probe+0x234/0xc90 drivers/base/dd.c:658 __driver_probe_device+0x1de/0x4b0 drivers/base/dd.c:798 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:828 __driver_attach+0x274/0x570 drivers/base/dd.c:1214 bus_for_each_dev+0x13c/0x1d0 drivers/base/bus.c:368 serio_attach_driver drivers/input/serio/serio.c:804 [inline] serio_handle_event+0x2b8/0xa90 drivers/input/serio/serio.c:224 process_one_work+0xaa2/0x16f0 kernel/workqueue.c:2597 worker_thread+0x687/0x1110 kernel/workqueue.c:2748 kthread+0x33a/0x430 kernel/kthread.c:389 ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:296 INITIAL USE at: lock_acquire kernel/locking/lockdep.c:5761 [inline] lock_acquire+0x1ae/0x510 kernel/locking/lockdep.c:5726 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x3a/0x50 kernel/locking/spinlock.c:162 input_inject_event+0xa4/0x380 drivers/input/input.c:460 __led_set_brightness drivers/leds/led-core.c:47 [inline] led_set_brightness_nopm drivers/leds/led-core.c:311 [inline] led_set_brightness_nosleep drivers/leds/led-core.c:342 [inline] led_set_brightness+0x208/0x290 drivers/leds/led-core.c:304 led_trigger_event drivers/leds/led-triggers.c:391 [inline] led_trigger_event+0xb4/0x240 drivers/leds/led-triggers.c:381 kbd_led_trigger_activate+0xc6/0x100 drivers/tty/vt/keyboard.c:1036 led_trigger_set+0x580/0xc00 drivers/leds/led-triggers.c:198 led_trigger_set_default drivers/leds/led-triggers.c:263 [inline] led_trigger_set_default+0x1c9/0x220 drivers/leds/led-triggers.c:250 led_classdev_register_ext+0x63b/0x8c0 drivers/leds/led-class.c:514 led_classdev_register include/linux/leds.h:278 [inline] input_leds_connect+0x54a/0x8d0 drivers/input/input-leds.c:139 input_attach_handler.isra.0+0x17c/0x250 drivers/input/input.c:1064 input_register_device+0xb1e/0x1130 drivers/input/input.c:2396 atkbd_connect+0x5e2/0xa20 drivers/input/keyboard/atkbd.c:1298 serio_connect_driver drivers/input/serio/serio.c:44 [inline] serio_driver_probe+0x71/0xa0 drivers/input/serio/serio.c:775 call_driver_probe drivers/base/dd.c:579 [inline] really_probe+0x234/0xc90 drivers/base/dd.c:658 __driver_probe_device+0x1de/0x4b0 drivers/base/dd.c:798 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:828 __driver_attach+0x274/0x570 drivers/base/dd.c:1214 bus_for_each_dev+0x13c/0x1d0 drivers/base/bus.c:368 serio_attach_driver drivers/input/serio/serio.c:804 [inline] serio_handle_event+0x2b8/0xa90 drivers/input/serio/serio.c:224 process_one_work+0xaa2/0x16f0 kernel/workqueue.c:2597 worker_thread+0x687/0x1110 kernel/workqueue.c:2748 kthread+0x33a/0x430 kernel/kthread.c:389 ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:296 } ... key at: [] __key.6+0x0/0x40 -> (&client->buffer_lock){....}-{2:2} { INITIAL USE at: lock_acquire kernel/locking/lockdep.c:5761 [inline] lock_acquire+0x1ae/0x510 kernel/locking/lockdep.c:5726 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:351 [inline] evdev_pass_values+0x10e/0x9b0 drivers/input/evdev.c:261 evdev_events+0x1be/0x390 drivers/input/evdev.c:306 input_to_handler+0x29e/0x4c0 drivers/input/input.c:129 input_pass_values.part.0+0x536/0x7a0 drivers/input/input.c:161 input_pass_values drivers/input/input.c:148 [inline] input_event_dispose+0x5ee/0x770 drivers/input/input.c:378 input_handle_event+0x11c/0xd80 drivers/input/input.c:406 input_inject_event+0x1c2/0x380 drivers/input/input.c:465 evdev_write+0x456/0x750 drivers/input/evdev.c:530 vfs_write+0x2a4/0xe40 fs/read_write.c:582 ksys_write+0x1f0/0x250 fs/read_write.c:637 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd } ... key at: [] __key.3+0x0/0x40 ... acquired at: __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:351 [inline] evdev_pass_values+0x10e/0x9b0 drivers/input/evdev.c:261 evdev_events+0x1be/0x390 drivers/input/evdev.c:306 input_to_handler+0x29e/0x4c0 drivers/input/input.c:129 input_pass_values.part.0+0x536/0x7a0 drivers/input/input.c:161 input_pass_values drivers/input/input.c:148 [inline] input_event_dispose+0x5ee/0x770 drivers/input/input.c:378 input_handle_event+0x11c/0xd80 drivers/input/input.c:406 input_inject_event+0x1c2/0x380 drivers/input/input.c:465 evdev_write+0x456/0x750 drivers/input/evdev.c:530 vfs_write+0x2a4/0xe40 fs/read_write.c:582 ksys_write+0x1f0/0x250 fs/read_write.c:637 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd the dependencies between the lock to be acquired and HARDIRQ-irq-unsafe lock: -> (tasklist_lock){.+.+}-{2:2} { HARDIRQ-ON-R at: lock_acquire kernel/locking/lockdep.c:5761 [inline] lock_acquire+0x1ae/0x510 kernel/locking/lockdep.c:5726 __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline] _raw_read_lock+0x5f/0x70 kernel/locking/spinlock.c:228 do_wait+0x2a9/0xc70 kernel/exit.c:1607 kernel_wait+0xa0/0x150 kernel/exit.c:1797 call_usermodehelper_exec_sync kernel/umh.c:137 [inline] call_usermodehelper_exec_work+0xf1/0x170 kernel/umh.c:164 process_one_work+0xaa2/0x16f0 kernel/workqueue.c:2597 worker_thread+0x687/0x1110 kernel/workqueue.c:2748 kthread+0x33a/0x430 kernel/kthread.c:389 ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:296 SOFTIRQ-ON-R at: lock_acquire kernel/locking/lockdep.c:5761 [inline] lock_acquire+0x1ae/0x510 kernel/locking/lockdep.c:5726 __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline] _raw_read_lock+0x5f/0x70 kernel/locking/spinlock.c:228 do_wait+0x2a9/0xc70 kernel/exit.c:1607 kernel_wait+0xa0/0x150 kernel/exit.c:1797 call_usermodehelper_exec_sync kernel/umh.c:137 [inline] call_usermodehelper_exec_work+0xf1/0x170 kernel/umh.c:164 process_one_work+0xaa2/0x16f0 kernel/workqueue.c:2597 worker_thread+0x687/0x1110 kernel/workqueue.c:2748 kthread+0x33a/0x430 kernel/kthread.c:389 ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:296 INITIAL USE at: lock_acquire kernel/locking/lockdep.c:5761 [inline] lock_acquire+0x1ae/0x510 kernel/locking/lockdep.c:5726 __raw_write_lock_irq include/linux/rwlock_api_smp.h:195 [inline] _raw_write_lock_irq+0x36/0x50 kernel/locking/spinlock.c:326 copy_process+0x4672/0x7400 kernel/fork.c:2629 kernel_clone+0xfd/0x8f0 kernel/fork.c:2912 user_mode_thread+0xb4/0xf0 kernel/fork.c:2990 rest_init+0x27/0x2b0 init/main.c:691 arch_call_rest_init+0x13/0x30 init/main.c:823 start_kernel+0x39f/0x480 init/main.c:1068 x86_64_start_reservations+0x18/0x30 arch/x86/kernel/head64.c:556 x86_64_start_kernel+0xb2/0xc0 arch/x86/kernel/head64.c:537 secondary_startup_64_no_verify+0x167/0x16b INITIAL READ USE at: lock_acquire kernel/locking/lockdep.c:5761 [inline] lock_acquire+0x1ae/0x510 kernel/locking/lockdep.c:5726 __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline] _raw_read_lock+0x5f/0x70 kernel/locking/spinlock.c:228 do_wait+0x2a9/0xc70 kernel/exit.c:1607 kernel_wait+0xa0/0x150 kernel/exit.c:1797 call_usermodehelper_exec_sync kernel/umh.c:137 [inline] call_usermodehelper_exec_work+0xf1/0x170 kernel/umh.c:164 process_one_work+0xaa2/0x16f0 kernel/workqueue.c:2597 worker_thread+0x687/0x1110 kernel/workqueue.c:2748 kthread+0x33a/0x430 kernel/kthread.c:389 ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:296 } ... key at: [] tasklist_lock+0x18/0x40 ... acquired at: __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline] _raw_read_lock+0x5f/0x70 kernel/locking/spinlock.c:228 send_sigio+0xaf/0x3c0 fs/fcntl.c:793 kill_fasync_rcu fs/fcntl.c:1004 [inline] kill_fasync fs/fcntl.c:1018 [inline] kill_fasync+0x1f8/0x4f0 fs/fcntl.c:1011 lease_break_callback+0x23/0x30 fs/locks.c:522 __break_lease+0x70f/0x17f0 fs/locks.c:1522 break_lease include/linux/filelock.h:360 [inline] break_lease include/linux/filelock.h:350 [inline] do_dentry_open+0x62c/0x1780 fs/open.c:905 do_open fs/namei.c:3636 [inline] path_openat+0x19af/0x29c0 fs/namei.c:3793 do_filp_open+0x1de/0x430 fs/namei.c:3820 do_sys_openat2+0x176/0x1e0 fs/open.c:1407 do_sys_open fs/open.c:1422 [inline] __do_sys_open fs/open.c:1430 [inline] __se_sys_open fs/open.c:1426 [inline] __x64_sys_open+0x154/0x1e0 fs/open.c:1426 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd -> (&f->f_owner.lock){....}-{2:2} { INITIAL USE at: lock_acquire kernel/locking/lockdep.c:5761 [inline] lock_acquire+0x1ae/0x510 kernel/locking/lockdep.c:5726 __raw_write_lock_irq include/linux/rwlock_api_smp.h:195 [inline] _raw_write_lock_irq+0x36/0x50 kernel/locking/spinlock.c:326 f_modown+0x2a/0x390 fs/fcntl.c:92 __f_setown fs/fcntl.c:111 [inline] f_setown_ex fs/fcntl.c:201 [inline] do_fcntl+0xcf8/0x1290 fs/fcntl.c:384 __do_sys_fcntl fs/fcntl.c:455 [inline] __se_sys_fcntl fs/fcntl.c:440 [inline] __x64_sys_fcntl+0x16c/0x1e0 fs/fcntl.c:440 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd INITIAL READ USE at: lock_acquire kernel/locking/lockdep.c:5761 [inline] lock_acquire+0x1ae/0x510 kernel/locking/lockdep.c:5726 __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline] _raw_read_lock_irqsave+0x70/0x90 kernel/locking/spinlock.c:236 send_sigio+0x28/0x3c0 fs/fcntl.c:779 kill_fasync_rcu fs/fcntl.c:1004 [inline] kill_fasync fs/fcntl.c:1018 [inline] kill_fasync+0x1f8/0x4f0 fs/fcntl.c:1011 lease_break_callback+0x23/0x30 fs/locks.c:522 __break_lease+0x70f/0x17f0 fs/locks.c:1522 break_lease include/linux/filelock.h:360 [inline] break_lease include/linux/filelock.h:350 [inline] do_dentry_open+0x62c/0x1780 fs/open.c:905 do_open fs/namei.c:3636 [inline] path_openat+0x19af/0x29c0 fs/namei.c:3793 do_filp_open+0x1de/0x430 fs/namei.c:3820 do_sys_openat2+0x176/0x1e0 fs/open.c:1407 do_sys_open fs/open.c:1422 [inline] __do_sys_open fs/open.c:1430 [inline] __se_sys_open fs/open.c:1426 [inline] __x64_sys_open+0x154/0x1e0 fs/open.c:1426 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd } ... key at: [] __key.5+0x0/0x40 ... acquired at: __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline] _raw_read_lock_irqsave+0x70/0x90 kernel/locking/spinlock.c:236 send_sigio+0x28/0x3c0 fs/fcntl.c:779 kill_fasync_rcu fs/fcntl.c:1004 [inline] kill_fasync fs/fcntl.c:1018 [inline] kill_fasync+0x1f8/0x4f0 fs/fcntl.c:1011 lease_break_callback+0x23/0x30 fs/locks.c:522 __break_lease+0x70f/0x17f0 fs/locks.c:1522 break_lease include/linux/filelock.h:360 [inline] break_lease include/linux/filelock.h:350 [inline] do_dentry_open+0x62c/0x1780 fs/open.c:905 do_open fs/namei.c:3636 [inline] path_openat+0x19af/0x29c0 fs/namei.c:3793 do_filp_open+0x1de/0x430 fs/namei.c:3820 do_sys_openat2+0x176/0x1e0 fs/open.c:1407 do_sys_open fs/open.c:1422 [inline] __do_sys_open fs/open.c:1430 [inline] __se_sys_open fs/open.c:1426 [inline] __x64_sys_open+0x154/0x1e0 fs/open.c:1426 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd -> (&new->fa_lock){....}-{2:2} { INITIAL READ USE at: lock_acquire kernel/locking/lockdep.c:5761 [inline] lock_acquire+0x1ae/0x510 kernel/locking/lockdep.c:5726 __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline] _raw_read_lock_irqsave+0x70/0x90 kernel/locking/spinlock.c:236 kill_fasync_rcu fs/fcntl.c:997 [inline] kill_fasync fs/fcntl.c:1018 [inline] kill_fasync+0x13a/0x4f0 fs/fcntl.c:1011 lease_break_callback+0x23/0x30 fs/locks.c:522 __break_lease+0x70f/0x17f0 fs/locks.c:1522 break_lease include/linux/filelock.h:360 [inline] break_lease include/linux/filelock.h:350 [inline] do_dentry_open+0x62c/0x1780 fs/open.c:905 do_open fs/namei.c:3636 [inline] path_openat+0x19af/0x29c0 fs/namei.c:3793 do_filp_open+0x1de/0x430 fs/namei.c:3820 do_sys_openat2+0x176/0x1e0 fs/open.c:1407 do_sys_open fs/open.c:1422 [inline] __do_sys_open fs/open.c:1430 [inline] __se_sys_open fs/open.c:1426 [inline] __x64_sys_open+0x154/0x1e0 fs/open.c:1426 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd } ... key at: [] __key.0+0x0/0x40 ... acquired at: lock_acquire kernel/locking/lockdep.c:5761 [inline] lock_acquire+0x1ae/0x510 kernel/locking/lockdep.c:5726 __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline] _raw_read_lock_irqsave+0x70/0x90 kernel/locking/spinlock.c:236 kill_fasync_rcu fs/fcntl.c:997 [inline] kill_fasync fs/fcntl.c:1018 [inline] kill_fasync+0x13a/0x4f0 fs/fcntl.c:1011 __pass_event drivers/input/evdev.c:240 [inline] evdev_pass_values+0x619/0x9b0 drivers/input/evdev.c:278 evdev_events+0x1be/0x390 drivers/input/evdev.c:306 input_to_handler+0x29e/0x4c0 drivers/input/input.c:129 input_pass_values.part.0+0x536/0x7a0 drivers/input/input.c:161 input_pass_values drivers/input/input.c:148 [inline] input_event_dispose+0x5ee/0x770 drivers/input/input.c:378 input_handle_event+0x11c/0xd80 drivers/input/input.c:406 input_inject_event+0x1c2/0x380 drivers/input/input.c:465 evdev_write+0x456/0x750 drivers/input/evdev.c:530 vfs_write+0x2a4/0xe40 fs/read_write.c:582 ksys_write+0x1f0/0x250 fs/read_write.c:637 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd stack backtrace: CPU: 1 PID: 5025 Comm: syz-executor425 Not tainted 6.5.0-rc1-syzkaller-00248-gb6e6cc1f78c7 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106 print_bad_irq_dependency kernel/locking/lockdep.c:2634 [inline] check_irq_usage+0x10b8/0x1c70 kernel/locking/lockdep.c:2873 check_prev_add kernel/locking/lockdep.c:3146 [inline] check_prevs_add kernel/locking/lockdep.c:3261 [inline] validate_chain kernel/locking/lockdep.c:3876 [inline] __lock_acquire+0x2e53/0x5de0 kernel/locking/lockdep.c:5144 lock_acquire kernel/locking/lockdep.c:5761 [inline] lock_acquire+0x1ae/0x510 kernel/locking/lockdep.c:5726 __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline] _raw_read_lock_irqsave+0x70/0x90 kernel/locking/spinlock.c:236 kill_fasync_rcu fs/fcntl.c:997 [inline] kill_fasync fs/fcntl.c:1018 [inline] kill_fasync+0x13a/0x4f0 fs/fcntl.c:1011 __pass_event drivers/input/evdev.c:240 [inline] evdev_pass_values+0x619/0x9b0 drivers/input/evdev.c:278 evdev_events+0x1be/0x390 drivers/input/evdev.c:306 input_to_handler+0x29e/0x4c0 drivers/input/input.c:129 input_pass_values.part.0+0x536/0x7a0 drivers/input/input.c:161 input_pass_values drivers/input/input.c:148 [inline] input_event_dispose+0x5ee/0x770 drivers/input/input.c:378 input_handle_event+0x11c/0xd80 drivers/input/input.c:406 input_inject_event+0x1c2/0x380 drivers/input/input.c:465 evdev_write+0x456/0x750 drivers/input/evdev.c:530 vfs_write+0x2a4/0xe40 fs/read_write.c:582 ksys_write+0x1f0/0x250 fs/read_write.c:637 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f459ba6fbb9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 c1 17 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:00007f459b