UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy misc raw-gadget: fail, usb_gadget_register_driver returned -16 ===================================================== WARNING: HARDIRQ-safe -> HARDIRQ-unsafe lock order detected 6.10.0-rc4-syzkaller-00217-g35bb670d65fc #0 Not tainted ----------------------------------------------------- syz-executor.4/2645 [HC0[0]:SC0[0]:HE0:SE1] is trying to acquire: ffff88801bb4f600 (&new->fa_lock){...-}-{2:2}, at: kill_fasync_rcu fs/fcntl.c:1028 [inline] ffff88801bb4f600 (&new->fa_lock){...-}-{2:2}, at: kill_fasync+0x19e/0x4d0 fs/fcntl.c:1049 and this task is already holding: ffff88802a0d7028 (&client->buffer_lock){-.-.}-{2:2}, at: spin_lock include/linux/spinlock.h:351 [inline] ffff88802a0d7028 (&client->buffer_lock){-.-.}-{2:2}, at: evdev_pass_values+0xf2/0xad0 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: (&client->buffer_lock){-.-.}-{2:2} ... which became HARDIRQ-irq-safe at: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754 __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+0xf2/0xad0 drivers/input/evdev.c:261 evdev_events+0x1c2/0x300 drivers/input/evdev.c:306 input_to_handler drivers/input/input.c:129 [inline] input_pass_values+0x84d/0x1200 drivers/input/input.c:161 input_event_dispose+0x402/0x650 drivers/input/input.c:389 input_handle_event+0xa71/0xbe0 drivers/input/input.c:406 input_event+0xa4/0xd0 drivers/input/input.c:435 hidinput_hid_event+0x138c/0x1ca0 drivers/hid/hid-input.c:1746 hid_process_event+0x439/0x590 drivers/hid/hid-core.c:1540 hid_process_report drivers/hid/hid-core.c:1688 [inline] hid_report_raw_event+0x1002/0x18a0 drivers/hid/hid-core.c:2015 hid_input_report+0x416/0x500 drivers/hid/hid-core.c:2089 hid_irq_in+0x4a0/0x6d0 drivers/hid/usbhid/hid-core.c:284 __usb_hcd_giveback_urb+0x42c/0x6e0 drivers/usb/core/hcd.c:1650 dummy_timer+0x830/0x45d0 drivers/usb/gadget/udc/dummy_hcd.c:1987 __run_hrtimer kernel/time/hrtimer.c:1687 [inline] __hrtimer_run_queues+0x59b/0xd50 kernel/time/hrtimer.c:1751 hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1813 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline] __sysvec_apic_timer_interrupt+0x110/0x3f0 arch/x86/kernel/apic/apic.c:1049 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline] sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1043 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 __sanitizer_cov_trace_switch+0x9d/0x120 kernel/kcov.c:341 batadv_hard_if_event+0x9e/0x1620 net/batman-adv/hard-interface.c:975 notifier_call_chain+0x19f/0x3e0 kernel/notifier.c:93 __dev_notify_flags+0x207/0x400 dev_change_flags+0xf0/0x1a0 net/core/dev.c:8858 do_setlink+0xccd/0x41f0 net/core/rtnetlink.c:2900 __rtnl_newlink net/core/rtnetlink.c:3696 [inline] rtnl_newlink+0x180b/0x20a0 net/core/rtnetlink.c:3743 rtnetlink_rcv_msg+0x89b/0x1180 net/core/rtnetlink.c:6635 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2564 netlink_unicast_kernel net/netlink/af_netlink.c:1335 [inline] netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1361 netlink_sendmsg+0x8db/0xcb0 net/netlink/af_netlink.c:1905 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:745 __sys_sendto+0x3a4/0x4f0 net/socket.c:2192 __do_sys_sendto net/socket.c:2204 [inline] __se_sys_sendto net/socket.c:2200 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2200 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f to a HARDIRQ-irq-unsafe lock: (tasklist_lock){.+.+}-{2:2} ... which became HARDIRQ-irq-unsafe at: ... lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754 __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline] _raw_read_lock+0x36/0x50 kernel/locking/spinlock.c:228 __do_wait+0x12d/0x850 kernel/exit.c:1583 do_wait+0x1e9/0x560 kernel/exit.c:1627 kernel_wait+0xe9/0x240 kernel/exit.c:1803 call_usermodehelper_exec_sync kernel/umh.c:137 [inline] call_usermodehelper_exec_work+0xbd/0x230 kernel/umh.c:164 process_one_work kernel/workqueue.c:3231 [inline] process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312 worker_thread+0x86d/0xd70 kernel/workqueue.c:3393 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 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); lock(&client->buffer_lock); *** DEADLOCK *** 7 locks held by syz-executor.4/2645: #0: ffff888024766110 (&evdev->mutex){+.+.}-{3:3}, at: evdev_write+0x272/0x7c0 drivers/input/evdev.c:513 #1: ffff88801a3aa230 (&dev->event_lock#2){-.-.}-{2:2}, at: input_inject_event+0xc5/0x340 drivers/input/input.c:460 #2: ffffffff8e333fa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline] #2: ffffffff8e333fa0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline] #2: ffffffff8e333fa0 (rcu_read_lock){....}-{1:2}, at: input_inject_event+0xd6/0x340 drivers/input/input.c:462 #3: ffffffff8e333fa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline] #3: ffffffff8e333fa0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline] #3: ffffffff8e333fa0 (rcu_read_lock){....}-{1:2}, at: input_pass_values+0x9d/0x1200 drivers/input/input.c:153 #4: ffffffff8e333fa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline] #4: ffffffff8e333fa0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline] #4: ffffffff8e333fa0 (rcu_read_lock){....}-{1:2}, at: evdev_events+0x6f/0x300 drivers/input/evdev.c:298 #5: ffff88802a0d7028 (&client->buffer_lock){-.-.}-{2:2}, at: spin_lock include/linux/spinlock.h:351 [inline] #5: ffff88802a0d7028 (&client->buffer_lock){-.-.}-{2:2}, at: evdev_pass_values+0xf2/0xad0 drivers/input/evdev.c:261 #6: ffffffff8e333fa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline] #6: ffffffff8e333fa0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline] #6: ffffffff8e333fa0 (rcu_read_lock){....}-{1:2}, at: kill_fasync+0x55/0x4d0 fs/fcntl.c:1048 the dependencies between HARDIRQ-irq-safe lock and the holding lock: -> (&client->buffer_lock){-.-.}-{2:2} { IN-HARDIRQ-W at: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754 __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+0xf2/0xad0 drivers/input/evdev.c:261 evdev_events+0x1c2/0x300 drivers/input/evdev.c:306 input_to_handler drivers/input/input.c:129 [inline] input_pass_values+0x84d/0x1200 drivers/input/input.c:161 input_event_dispose+0x402/0x650 drivers/input/input.c:389 input_handle_event+0xa71/0xbe0 drivers/input/input.c:406 input_event+0xa4/0xd0 drivers/input/input.c:435 hidinput_hid_event+0x138c/0x1ca0 drivers/hid/hid-input.c:1746 hid_process_event+0x439/0x590 drivers/hid/hid-core.c:1540 hid_process_report drivers/hid/hid-core.c:1688 [inline] hid_report_raw_event+0x1002/0x18a0 drivers/hid/hid-core.c:2015 hid_input_report+0x416/0x500 drivers/hid/hid-core.c:2089 hid_irq_in+0x4a0/0x6d0 drivers/hid/usbhid/hid-core.c:284 __usb_hcd_giveback_urb+0x42c/0x6e0 drivers/usb/core/hcd.c:1650 dummy_timer+0x830/0x45d0 drivers/usb/gadget/udc/dummy_hcd.c:1987 __run_hrtimer kernel/time/hrtimer.c:1687 [inline] __hrtimer_run_queues+0x59b/0xd50 kernel/time/hrtimer.c:1751 hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1813 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline] __sysvec_apic_timer_interrupt+0x110/0x3f0 arch/x86/kernel/apic/apic.c:1049 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline] sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1043 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 __sanitizer_cov_trace_switch+0x9d/0x120 kernel/kcov.c:341 batadv_hard_if_event+0x9e/0x1620 net/batman-adv/hard-interface.c:975 notifier_call_chain+0x19f/0x3e0 kernel/notifier.c:93 __dev_notify_flags+0x207/0x400 dev_change_flags+0xf0/0x1a0 net/core/dev.c:8858 do_setlink+0xccd/0x41f0 net/core/rtnetlink.c:2900 __rtnl_newlink net/core/rtnetlink.c:3696 [inline] rtnl_newlink+0x180b/0x20a0 net/core/rtnetlink.c:3743 rtnetlink_rcv_msg+0x89b/0x1180 net/core/rtnetlink.c:6635 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2564 netlink_unicast_kernel net/netlink/af_netlink.c:1335 [inline] netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1361 netlink_sendmsg+0x8db/0xcb0 net/netlink/af_netlink.c:1905 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:745 __sys_sendto+0x3a4/0x4f0 net/socket.c:2192 __do_sys_sendto net/socket.c:2204 [inline] __se_sys_sendto net/socket.c:2200 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2200 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f IN-SOFTIRQ-W at: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754 __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+0xf2/0xad0 drivers/input/evdev.c:261 evdev_events+0x1c2/0x300 drivers/input/evdev.c:306 input_to_handler drivers/input/input.c:129 [inline] input_pass_values+0x84d/0x1200 drivers/input/input.c:161 input_event_dispose+0x402/0x650 drivers/input/input.c:389 input_handle_event+0xa71/0xbe0 drivers/input/input.c:406 input_event+0xa4/0xd0 drivers/input/input.c:435 hidinput_hid_event+0x138c/0x1ca0 drivers/hid/hid-input.c:1746 hid_process_event+0x439/0x590 drivers/hid/hid-core.c:1540 hid_process_report drivers/hid/hid-core.c:1688 [inline] hid_report_raw_event+0x1002/0x18a0 drivers/hid/hid-core.c:2015 hid_input_report+0x416/0x500 drivers/hid/hid-core.c:2089 hid_irq_in+0x4a0/0x6d0 drivers/hid/usbhid/hid-core.c:284 __usb_hcd_giveback_urb+0x42c/0x6e0 drivers/usb/core/hcd.c:1650 dummy_timer+0x830/0x45d0 drivers/usb/gadget/udc/dummy_hcd.c:1987 __run_hrtimer kernel/time/hrtimer.c:1687 [inline] __hrtimer_run_queues+0x59b/0xd50 kernel/time/hrtimer.c:1751 hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1813 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline] __sysvec_apic_timer_interrupt+0x110/0x3f0 arch/x86/kernel/apic/apic.c:1049 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline] sysvec_apic_timer_interrupt+0x52/0xc0 arch/x86/kernel/apic/apic.c:1043 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] _raw_spin_unlock_irqrestore+0xd8/0x140 kernel/locking/spinlock.c:194 led_trigger_event+0x138/0x210 drivers/leds/led-triggers.c:394 kbd_propagate_led_state drivers/tty/vt/keyboard.c:1082 [inline] kbd_bh+0x1b5/0x290 drivers/tty/vt/keyboard.c:1271 tasklet_action_common+0x321/0x4d0 kernel/softirq.c:785 handle_softirqs+0x2c4/0x970 kernel/softirq.c:554 __do_softirq kernel/softirq.c:588 [inline] invoke_softirq kernel/softirq.c:428 [inline] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 irq_exit_rcu+0x9/0x30 kernel/softirq.c:649 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1043 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 __sanitizer_cov_trace_switch+0x9d/0x120 kernel/kcov.c:341 batadv_hard_if_event+0x9e/0x1620 net/batman-adv/hard-interface.c:975 notifier_call_chain+0x19f/0x3e0 kernel/notifier.c:93 __dev_notify_flags+0x207/0x400 dev_change_flags+0xf0/0x1a0 net/core/dev.c:8858 do_setlink+0xccd/0x41f0 net/core/rtnetlink.c:2900 __rtnl_newlink net/core/rtnetlink.c:3696 [inline] rtnl_newlink+0x180b/0x20a0 net/core/rtnetlink.c:3743 rtnetlink_rcv_msg+0x89b/0x1180 net/core/rtnetlink.c:6635 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2564 netlink_unicast_kernel net/netlink/af_netlink.c:1335 [inline] netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1361 netlink_sendmsg+0x8db/0xcb0 net/netlink/af_netlink.c:1905 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:745 __sys_sendto+0x3a4/0x4f0 net/socket.c:2192 __do_sys_sendto net/socket.c:2204 [inline] __se_sys_sendto net/socket.c:2200 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2200 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f INITIAL USE at: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754 __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+0xf2/0xad0 drivers/input/evdev.c:261 evdev_events+0x1c2/0x300 drivers/input/evdev.c:306 input_to_handler drivers/input/input.c:129 [inline] input_pass_values+0x84d/0x1200 drivers/input/input.c:161 input_event_dispose+0x36c/0x650 drivers/input/input.c:378 input_handle_event+0xa71/0xbe0 drivers/input/input.c:406 input_inject_event+0x22f/0x340 drivers/input/input.c:465 evdev_write+0x672/0x7c0 drivers/input/evdev.c:530 vfs_write+0x2a2/0xc90 fs/read_write.c:588 ksys_write+0x1a0/0x2c0 fs/read_write.c:643 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f } ... key at: [] evdev_open.__key.24+0x0/0x20 the dependencies between the lock to be acquired and HARDIRQ-irq-unsafe lock: -> (tasklist_lock){.+.+}-{2:2} { HARDIRQ-ON-R at: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754 __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline] _raw_read_lock+0x36/0x50 kernel/locking/spinlock.c:228 __do_wait+0x12d/0x850 kernel/exit.c:1583 do_wait+0x1e9/0x560 kernel/exit.c:1627 kernel_wait+0xe9/0x240 kernel/exit.c:1803 call_usermodehelper_exec_sync kernel/umh.c:137 [inline] call_usermodehelper_exec_work+0xbd/0x230 kernel/umh.c:164 process_one_work kernel/workqueue.c:3231 [inline] process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312 worker_thread+0x86d/0xd70 kernel/workqueue.c:3393 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 SOFTIRQ-ON-R at: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754 __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline] _raw_read_lock+0x36/0x50 kernel/locking/spinlock.c:228 __do_wait+0x12d/0x850 kernel/exit.c:1583 do_wait+0x1e9/0x560 kernel/exit.c:1627 kernel_wait+0xe9/0x240 kernel/exit.c:1803 call_usermodehelper_exec_sync kernel/umh.c:137 [inline] call_usermodehelper_exec_work+0xbd/0x230 kernel/umh.c:164 process_one_work kernel/workqueue.c:3231 [inline] process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312 worker_thread+0x86d/0xd70 kernel/workqueue.c:3393 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 INITIAL USE at: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754 __raw_write_lock_irq include/linux/rwlock_api_smp.h:195 [inline] _raw_write_lock_irq+0xd3/0x120 kernel/locking/spinlock.c:326 copy_process+0x228b/0x3dc0 kernel/fork.c:2516 kernel_clone+0x226/0x8f0 kernel/fork.c:2797 user_mode_thread+0x132/0x1a0 kernel/fork.c:2875 rest_init+0x23/0x300 init/main.c:712 start_kernel+0x47a/0x500 init/main.c:1103 x86_64_start_reservations+0x2a/0x30 arch/x86/kernel/head64.c:507 x86_64_start_kernel+0x99/0xa0 arch/x86/kernel/head64.c:488 common_startup_64+0x13e/0x147 INITIAL READ USE at: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754 __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline] _raw_read_lock+0x36/0x50 kernel/locking/spinlock.c:228 __do_wait+0x12d/0x850 kernel/exit.c:1583 do_wait+0x1e9/0x560 kernel/exit.c:1627 kernel_wait+0xe9/0x240 kernel/exit.c:1803 call_usermodehelper_exec_sync kernel/umh.c:137 [inline] call_usermodehelper_exec_work+0xbd/0x230 kernel/umh.c:164 process_one_work kernel/workqueue.c:3231 [inline] process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312 worker_thread+0x86d/0xd70 kernel/workqueue.c:3393 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 } ... key at: [] tasklist_lock+0x18/0x40 ... acquired at: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754 __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline] _raw_read_lock+0x36/0x50 kernel/locking/spinlock.c:228 send_sigio+0xfc/0x360 fs/fcntl.c:830 dnotify_handle_event+0x13c/0x440 fs/notify/dnotify/dnotify.c:114 fsnotify_handle_event fs/notify/fsnotify.c:336 [inline] send_to_group fs/notify/fsnotify.c:384 [inline] fsnotify+0x18ab/0x1f70 fs/notify/fsnotify.c:593 fsnotify_parent include/linux/fsnotify.h:99 [inline] fsnotify_file include/linux/fsnotify.h:125 [inline] fsnotify_access include/linux/fsnotify.h:374 [inline] vfs_readv+0x91e/0xa90 fs/read_write.c:937 do_preadv fs/read_write.c:1049 [inline] __do_sys_preadv fs/read_write.c:1099 [inline] __se_sys_preadv fs/read_write.c:1094 [inline] __x64_sys_preadv+0x1c7/0x2d0 fs/read_write.c:1094 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> (&f->f_owner.lock){...-}-{2:2} { IN-SOFTIRQ-R at: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754 __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline] _raw_read_lock_irqsave+0xdd/0x130 kernel/locking/spinlock.c:236 send_sigurg+0x29/0x3c0 fs/fcntl.c:855 sk_send_sigurg+0x75/0x2f0 net/core/sock.c:3411 tcp_check_urg+0x207/0x740 net/ipv4/tcp_input.c:5784 tcp_urg+0x15c/0x450 net/ipv4/tcp_input.c:5825 tcp_rcv_established+0xfac/0x2020 net/ipv4/tcp_input.c:6174 tcp_v4_do_rcv+0x965/0xc60 net/ipv4/tcp_ipv4.c:1909 tcp_v4_rcv+0x2d90/0x37b0 net/ipv4/tcp_ipv4.c:2345 ip_protocol_deliver_rcu+0x225/0x430 net/ipv4/ip_input.c:205 ip_local_deliver_finish+0x33f/0x5f0 net/ipv4/ip_input.c:233 NF_HOOK+0x3a4/0x450 include/linux/netfilter.h:314 NF_HOOK+0x3a4/0x450 include/linux/netfilter.h:314 __netif_receive_skb_one_core net/core/dev.c:5625 [inline] __netif_receive_skb+0x2bf/0x650 net/core/dev.c:5739 process_backlog+0x391/0x7d0 net/core/dev.c:6068 __napi_poll+0xcb/0x490 net/core/dev.c:6722 napi_poll net/core/dev.c:6791 [inline] net_rx_action+0x7bb/0x10a0 net/core/dev.c:6907 handle_softirqs+0x2c4/0x970 kernel/softirq.c:554 run_ksoftirqd+0xca/0x130 kernel/softirq.c:928 smpboot_thread_fn+0x544/0xa30 kernel/smpboot.c:164 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 INITIAL USE at: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754 __raw_write_lock_irq include/linux/rwlock_api_smp.h:195 [inline] _raw_write_lock_irq+0xd3/0x120 kernel/locking/spinlock.c:326 f_modown+0x38/0x340 fs/fcntl.c:93 fcntl_dirnotify+0x57d/0x740 fs/notify/dnotify/dnotify.c:368 do_fcntl+0x492/0x1730 fs/fcntl.c:441 __do_sys_fcntl fs/fcntl.c:492 [inline] __se_sys_fcntl+0xd2/0x1c0 fs/fcntl.c:477 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f INITIAL READ USE at: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754 __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline] _raw_read_lock_irqsave+0xdd/0x130 kernel/locking/spinlock.c:236 send_sigurg+0x29/0x3c0 fs/fcntl.c:855 sk_send_sigurg+0x75/0x2f0 net/core/sock.c:3411 tcp_check_urg+0x207/0x740 net/ipv4/tcp_input.c:5784 tcp_urg+0x15c/0x450 net/ipv4/tcp_input.c:5825 tcp_rcv_established+0xfac/0x2020 net/ipv4/tcp_input.c:6174 tcp_v4_do_rcv+0x965/0xc60 net/ipv4/tcp_ipv4.c:1909 sk_backlog_rcv include/net/sock.h:1106 [inline] __release_sock+0x214/0x350 net/core/sock.c:2983 release_sock+0x61/0x1f0 net/core/sock.c:3549 tcp_sendmsg+0x3a/0x50 net/ipv4/tcp.c:1352 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x1a6/0x270 net/socket.c:745 __sys_sendto+0x3a4/0x4f0 net/socket.c:2192 __do_sys_sendto net/socket.c:2204 [inline] __se_sys_sendto net/socket.c:2200 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2200 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f } ... key at: [] init_file.__key+0x0/0x20 ... acquired at: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754 __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline] _raw_read_lock_irqsave+0xdd/0x130 kernel/locking/spinlock.c:236 send_sigio+0x33/0x360 fs/fcntl.c:816 kill_fasync_rcu fs/fcntl.c:1035 [inline] kill_fasync+0x23a/0x4d0 fs/fcntl.c:1049 pipe_write+0x12a3/0x1a40 fs/pipe.c:603 new_sync_write fs/read_write.c:497 [inline] vfs_write+0xa72/0xc90 fs/read_write.c:590 ksys_write+0x1a0/0x2c0 fs/read_write.c:643 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> (&new->fa_lock){...-}-{2:2} { IN-SOFTIRQ-R at: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754 __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline] _raw_read_lock_irqsave+0xdd/0x130 kernel/locking/spinlock.c:236 kill_fasync_rcu fs/fcntl.c:1028 [inline] kill_fasync+0x19e/0x4d0 fs/fcntl.c:1049 sock_wake_async+0x147/0x170 sk_wake_async_rcu include/net/sock.h:2443 [inline] sock_def_readable+0x3df/0x5b0 net/core/sock.c:3355 tcp_rcv_established+0x1531/0x2020 net/ipv4/tcp_input.c:6144 tcp_v4_do_rcv+0x965/0xc60 net/ipv4/tcp_ipv4.c:1909 tcp_v4_rcv+0x2d90/0x37b0 net/ipv4/tcp_ipv4.c:2345 ip_protocol_deliver_rcu+0x225/0x430 net/ipv4/ip_input.c:205 ip_local_deliver_finish+0x33f/0x5f0 net/ipv4/ip_input.c:233 NF_HOOK+0x3a4/0x450 include/linux/netfilter.h:314 NF_HOOK+0x3a4/0x450 include/linux/netfilter.h:314 __netif_receive_skb_one_core net/core/dev.c:5625 [inline] __netif_receive_skb+0x2bf/0x650 net/core/dev.c:5739 process_backlog+0x391/0x7d0 net/core/dev.c:6068 __napi_poll+0xcb/0x490 net/core/dev.c:6722 napi_poll net/core/dev.c:6791 [inline] net_rx_action+0x7bb/0x10a0 net/core/dev.c:6907 handle_softirqs+0x2c4/0x970 kernel/softirq.c:554 do_softirq+0x11b/0x1e0 kernel/softirq.c:455 __local_bh_enable_ip+0x1bb/0x200 kernel/softirq.c:382 sk_stream_wait_memory+0x762/0xfa0 net/core/stream.c:145 tcp_sendmsg_locked+0x1471/0x4e10 net/ipv4/tcp.c:1309 tcp_sendmsg+0x30/0x50 net/ipv4/tcp.c:1351 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x1a6/0x270 net/socket.c:745 __sys_sendto+0x3a4/0x4f0 net/socket.c:2192 __do_sys_sendto net/socket.c:2204 [inline] __se_sys_sendto net/socket.c:2200 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2200 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f INITIAL USE at: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754 __raw_write_lock_irq include/linux/rwlock_api_smp.h:195 [inline] _raw_write_lock_irq+0xd3/0x120 kernel/locking/spinlock.c:326 fasync_remove_entry+0xff/0x1d0 fs/fcntl.c:905 pipe_fasync+0xb5/0x1f0 fs/pipe.c:754 __fput+0x745/0x8b0 fs/file_table.c:419 task_work_run+0x24f/0x310 kernel/task_work.c:180 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop kernel/entry/common.c:114 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x168/0x370 kernel/entry/common.c:218 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f INITIAL READ USE at: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754 __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline] _raw_read_lock_irqsave+0xdd/0x130 kernel/locking/spinlock.c:236 kill_fasync_rcu fs/fcntl.c:1028 [inline] kill_fasync+0x19e/0x4d0 fs/fcntl.c:1049 pipe_write+0x12a3/0x1a40 fs/pipe.c:603 new_sync_write fs/read_write.c:497 [inline] vfs_write+0xa72/0xc90 fs/read_write.c:590 ksys_write+0x1a0/0x2c0 fs/read_write.c:643 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f } ... key at: [] fasync_insert_entry.__key+0x0/0x20 ... acquired at: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754 __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline] _raw_read_lock_irqsave+0xdd/0x130 kernel/locking/spinlock.c:236 kill_fasync_rcu fs/fcntl.c:1028 [inline] kill_fasync+0x19e/0x4d0 fs/fcntl.c:1049 __pass_event drivers/input/evdev.c:240 [inline] evdev_pass_values+0x58a/0xad0 drivers/input/evdev.c:278 evdev_events+0x1c2/0x300 drivers/input/evdev.c:306 input_to_handler drivers/input/input.c:129 [inline] input_pass_values+0x84d/0x1200 drivers/input/input.c:161 input_event_dispose+0x36c/0x650 drivers/input/input.c:378 input_handle_event+0xa71/0xbe0 drivers/input/input.c:406 input_inject_event+0x22f/0x340 drivers/input/input.c:465 evdev_write+0x672/0x7c0 drivers/input/evdev.c:530 vfs_write+0x2a2/0xc90 fs/read_write.c:588 ksys_write+0x1a0/0x2c0 fs/read_write.c:643 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f stack backtrace: CPU: 1 PID: 2645 Comm: syz-executor.4 Not tainted 6.10.0-rc4-syzkaller-00217-g35bb670d65fc #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114 print_bad_irq_dependency kernel/locking/lockdep.c:2626 [inline] check_irq_usage kernel/locking/lockdep.c:2865 [inline] check_prev_add kernel/locking/lockdep.c:3138 [inline] check_prevs_add kernel/locking/lockdep.c:3253 [inline] validate_chain+0x4de0/0x5900 kernel/locking/lockdep.c:3869 __lock_acquire+0x1346/0x1fd0 kernel/locking/lockdep.c:5137 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754 __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline] _raw_read_lock_irqsave+0xdd/0x130 kernel/locking/spinlock.c:236 kill_fasync_rcu fs/fcntl.c:1028 [inline] kill_fasync+0x19e/0x4d0 fs/fcntl.c:1049 __pass_event drivers/input/evdev.c:240 [inline] evdev_pass_values+0x58a/0xad0 drivers/input/evdev.c:278 evdev_events+0x1c2/0x300 drivers/input/evdev.c:306 input_to_handler drivers/input/input.c:129 [inline] input_pass_values+0x84d/0x1200 drivers/input/input.c:161 input_event_dispose+0x36c/0x650 drivers/input/input.c:378 input_handle_event+0xa71/0xbe0 drivers/input/input.c:406 input_inject_event+0x22f/0x340 drivers/input/input.c:465 evdev_write+0x672/0x7c0 drivers/input/evdev.c:530 vfs_write+0x2a2/0xc90 fs/read_write.c:588 ksys_write+0x1a0/0x2c0 fs/read_write.c:643 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f6a93a7d0a9 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:00007f6a947420c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f6a93bb3f80 RCX: 00007f6a93a7d0a9 RDX: 0000000000002778 RSI: 0000000020000040 RDI: 0000000000000005 RBP: 00007f6a93aec074 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f6a93bb3f80 R15: 00007f6a93cdfaa8