===================================================== WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected 6.12.0-rc5-syzkaller-00299-g11066801dd4b #0 Not tainted ----------------------------------------------------- syz.6.3861/19632 [HC0[0]:SC0[0]:HE0:SE1] is trying to acquire: ffff88805b841210 (&new->fa_lock){...-}-{2:2}, at: kill_fasync_rcu fs/fcntl.c:1127 [inline] ffff88805b841210 (&new->fa_lock){...-}-{2:2}, at: kill_fasync fs/fcntl.c:1151 [inline] ffff88805b841210 (&new->fa_lock){...-}-{2:2}, at: kill_fasync+0x138/0x520 fs/fcntl.c:1144 and this task is already holding: ffff88802818a028 (&client->buffer_lock){....}-{2:2}, at: spin_lock include/linux/spinlock.h:351 [inline] ffff88802818a028 (&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 SOFTIRQ-irq-safe lock: (&dev->event_lock#2){..-.}-{2:2} ... which became SOFTIRQ-irq-safe at: lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5825 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:162 input_inject_event+0xa4/0x370 drivers/input/input.c:423 kd_sound_helper+0x17a/0x280 drivers/tty/vt/keyboard.c:256 input_handler_for_each_handle+0xd7/0x250 drivers/input/input.c:2676 call_timer_fn+0x1a3/0x610 kernel/time/timer.c:1794 expire_timers kernel/time/timer.c:1845 [inline] __run_timers+0x6e8/0x930 kernel/time/timer.c:2419 __run_timer_base kernel/time/timer.c:2430 [inline] __run_timer_base kernel/time/timer.c:2423 [inline] run_timer_base+0x111/0x190 kernel/time/timer.c:2439 run_timer_softirq+0x1a/0x40 kernel/time/timer.c:2449 handle_softirqs+0x216/0x8f0 kernel/softirq.c:554 __do_softirq kernel/softirq.c:588 [inline] invoke_softirq kernel/softirq.c:428 [inline] __irq_exit_rcu kernel/softirq.c:637 [inline] irq_exit_rcu+0xbb/0x120 kernel/softirq.c:649 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline] sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 check_preemption_disabled+0x4/0xe0 lib/smp_processor_id.c:13 rcu_is_watching_curr_cpu include/linux/context_tracking.h:128 [inline] rcu_is_watching+0x12/0xc0 kernel/rcu/tree.c:737 trace_lock_acquire+0x14a/0x1d0 include/trace/events/lock.h:24 lock_acquire+0x2f/0xb0 kernel/locking/lockdep.c:5796 rcu_lock_acquire include/linux/rcupdate.h:337 [inline] rcu_read_lock include/linux/rcupdate.h:849 [inline] batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:408 [inline] batadv_nc_worker+0x16a/0x1060 net/batman-adv/network-coding.c:719 process_one_work+0x9c8/0x1ba0 kernel/workqueue.c:3229 process_scheduled_works kernel/workqueue.c:3310 [inline] worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391 kthread+0x2c4/0x3a0 kernel/kthread.c:389 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 to a SOFTIRQ-irq-unsafe lock: (tasklist_lock){.+.+}-{2:2} ... which became SOFTIRQ-irq-unsafe at: ... lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5825 __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline] _raw_read_lock+0x5f/0x70 kernel/locking/spinlock.c:228 __do_wait+0x105/0x890 kernel/exit.c:1648 do_wait+0x219/0x570 kernel/exit.c:1692 kernel_wait+0xa0/0x160 kernel/exit.c:1868 call_usermodehelper_exec_sync kernel/umh.c:137 [inline] call_usermodehelper_exec_work+0xf1/0x170 kernel/umh.c:164 process_one_work+0x9c8/0x1ba0 kernel/workqueue.c:3229 process_scheduled_works kernel/workqueue.c:3310 [inline] worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391 kthread+0x2c4/0x3a0 kernel/kthread.c:389 ret_from_fork+0x48/0x80 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: &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.6.3861/19632: #0: ffff88802a305110 (&evdev->mutex){+.+.}-{3:3}, at: evdev_write+0x207/0x750 drivers/input/evdev.c:511 #1: ffff88801cfd2230 (&dev->event_lock#2){..-.}-{2:2}, at: input_inject_event+0xa4/0x370 drivers/input/input.c:423 #2: ffffffff8e1b8340 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline] #2: ffffffff8e1b8340 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #2: ffffffff8e1b8340 (rcu_read_lock){....}-{1:2}, at: input_inject_event+0xca/0x370 drivers/input/input.c:425 #3: ffffffff8e1b8340 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline] #3: ffffffff8e1b8340 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #3: ffffffff8e1b8340 (rcu_read_lock){....}-{1:2}, at: input_pass_values+0x8b/0x8e0 drivers/input/input.c:118 #4: ffffffff8e1b8340 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline] #4: ffffffff8e1b8340 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #4: ffffffff8e1b8340 (rcu_read_lock){....}-{1:2}, at: evdev_events+0x86/0x390 drivers/input/evdev.c:298 #5: ffff88802818a028 (&client->buffer_lock){....}-{2:2}, at: spin_lock include/linux/spinlock.h:351 [inline] #5: ffff88802818a028 (&client->buffer_lock){....}-{2:2}, at: evdev_pass_values+0x10e/0x9b0 drivers/input/evdev.c:261 #6: ffffffff8e1b8340 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline] #6: ffffffff8e1b8340 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #6: ffffffff8e1b8340 (rcu_read_lock){....}-{1:2}, at: kill_fasync fs/fcntl.c:1150 [inline] #6: ffffffff8e1b8340 (rcu_read_lock){....}-{1:2}, at: kill_fasync+0x6d/0x520 fs/fcntl.c:1144 the dependencies between SOFTIRQ-irq-safe lock and the holding lock: -> (&dev->event_lock#2){..-.}-{2:2} { IN-SOFTIRQ-W at: lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5825 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:162 input_inject_event+0xa4/0x370 drivers/input/input.c:423 kd_sound_helper+0x17a/0x280 drivers/tty/vt/keyboard.c:256 input_handler_for_each_handle+0xd7/0x250 drivers/input/input.c:2676 call_timer_fn+0x1a3/0x610 kernel/time/timer.c:1794 expire_timers kernel/time/timer.c:1845 [inline] __run_timers+0x6e8/0x930 kernel/time/timer.c:2419 __run_timer_base kernel/time/timer.c:2430 [inline] __run_timer_base kernel/time/timer.c:2423 [inline] run_timer_base+0x111/0x190 kernel/time/timer.c:2439 run_timer_softirq+0x1a/0x40 kernel/time/timer.c:2449 handle_softirqs+0x216/0x8f0 kernel/softirq.c:554 __do_softirq kernel/softirq.c:588 [inline] invoke_softirq kernel/softirq.c:428 [inline] __irq_exit_rcu kernel/softirq.c:637 [inline] irq_exit_rcu+0xbb/0x120 kernel/softirq.c:649 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline] sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 check_preemption_disabled+0x4/0xe0 lib/smp_processor_id.c:13 rcu_is_watching_curr_cpu include/linux/context_tracking.h:128 [inline] rcu_is_watching+0x12/0xc0 kernel/rcu/tree.c:737 trace_lock_acquire+0x14a/0x1d0 include/trace/events/lock.h:24 lock_acquire+0x2f/0xb0 kernel/locking/lockdep.c:5796 rcu_lock_acquire include/linux/rcupdate.h:337 [inline] rcu_read_lock include/linux/rcupdate.h:849 [inline] batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:408 [inline] batadv_nc_worker+0x16a/0x1060 net/batman-adv/network-coding.c:719 process_one_work+0x9c8/0x1ba0 kernel/workqueue.c:3229 process_scheduled_works kernel/workqueue.c:3310 [inline] worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391 kthread+0x2c4/0x3a0 kernel/kthread.c:389 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 INITIAL USE at: lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5825 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:162 input_inject_event+0xa4/0x370 drivers/input/input.c:423 __led_set_brightness drivers/leds/led-core.c:52 [inline] led_set_brightness_nopm drivers/leds/led-core.c:323 [inline] led_set_brightness_nosleep drivers/leds/led-core.c:354 [inline] led_set_brightness+0x214/0x290 drivers/leds/led-core.c:316 kbd_led_trigger_activate+0xcb/0x110 drivers/tty/vt/keyboard.c:1036 led_trigger_set+0x59d/0xc60 drivers/leds/led-triggers.c:212 led_match_default_trigger drivers/leds/led-triggers.c:269 [inline] led_match_default_trigger drivers/leds/led-triggers.c:263 [inline] led_trigger_set_default drivers/leds/led-triggers.c:287 [inline] led_trigger_set_default+0x1bd/0x2a0 drivers/leds/led-triggers.c:276 led_classdev_register_ext+0x78c/0x9e0 drivers/leds/led-class.c:555 led_classdev_register include/linux/leds.h:273 [inline] input_leds_connect+0x552/0x8e0 drivers/input/input-leds.c:145 input_attach_handler.isra.0+0x184/0x260 drivers/input/input.c:1027 input_register_device+0xa84/0x1110 drivers/input/input.c:2470 atkbd_connect+0x5e2/0xa20 drivers/input/keyboard/atkbd.c:1340 serio_connect_driver drivers/input/serio/serio.c:44 [inline] serio_driver_probe+0x77/0xa0 drivers/input/serio/serio.c:775 call_driver_probe drivers/base/dd.c:579 [inline] really_probe+0x241/0xa90 drivers/base/dd.c:658 __driver_probe_device+0x1de/0x440 drivers/base/dd.c:800 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:830 __driver_attach+0x283/0x580 drivers/base/dd.c:1216 bus_for_each_dev+0x13f/0x1d0 drivers/base/bus.c:370 serio_attach_driver drivers/input/serio/serio.c:804 [inline] serio_handle_event+0x2bb/0xa90 drivers/input/serio/serio.c:224 process_one_work+0x9c8/0x1ba0 kernel/workqueue.c:3229 process_scheduled_works kernel/workqueue.c:3310 [inline] worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391 kthread+0x2c4/0x3a0 kernel/kthread.c:389 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 } ... key at: [] __key.7+0x0/0x40 -> (&client->buffer_lock){....}-{2:2} { INITIAL USE at: lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5825 __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+0x1bb/0x390 drivers/input/evdev.c:306 input_pass_values+0x77a/0x8e0 drivers/input/input.c:126 input_event_dispose drivers/input/input.c:352 [inline] input_handle_event+0xb30/0x14d0 drivers/input/input.c:369 input_inject_event+0x1bb/0x370 drivers/input/input.c:428 kd_sound_helper+0x17a/0x280 drivers/tty/vt/keyboard.c:256 input_handler_for_each_handle+0xd7/0x250 drivers/input/input.c:2676 kd_mksound+0x89/0x130 drivers/tty/vt/keyboard.c:280 handle_ascii drivers/tty/vt/vt.c:2251 [inline] do_con_trol drivers/tty/vt/vt.c:2568 [inline] do_con_write+0x2e6f/0x7bb0 drivers/tty/vt/vt.c:3092 con_write+0x23/0xb0 drivers/tty/vt/vt.c:3434 process_output_block drivers/tty/n_tty.c:574 [inline] n_tty_write+0x41c/0x1140 drivers/tty/n_tty.c:2389 iterate_tty_write drivers/tty/tty_io.c:1015 [inline] file_tty_write.constprop.0+0x509/0x9a0 drivers/tty/tty_io.c:1090 new_sync_write fs/read_write.c:590 [inline] vfs_write+0x5b1/0x1150 fs/read_write.c:683 ksys_write+0x12f/0x260 fs/read_write.c:736 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f } ... key at: [] __key.1+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+0x1bb/0x390 drivers/input/evdev.c:306 input_pass_values+0x77a/0x8e0 drivers/input/input.c:126 input_event_dispose drivers/input/input.c:352 [inline] input_handle_event+0xb30/0x14d0 drivers/input/input.c:369 input_inject_event+0x1bb/0x370 drivers/input/input.c:428 kd_sound_helper+0x17a/0x280 drivers/tty/vt/keyboard.c:256 input_handler_for_each_handle+0xd7/0x250 drivers/input/input.c:2676 kd_mksound+0x89/0x130 drivers/tty/vt/keyboard.c:280 handle_ascii drivers/tty/vt/vt.c:2251 [inline] do_con_trol drivers/tty/vt/vt.c:2568 [inline] do_con_write+0x2e6f/0x7bb0 drivers/tty/vt/vt.c:3092 con_write+0x23/0xb0 drivers/tty/vt/vt.c:3434 process_output_block drivers/tty/n_tty.c:574 [inline] n_tty_write+0x41c/0x1140 drivers/tty/n_tty.c:2389 iterate_tty_write drivers/tty/tty_io.c:1015 [inline] file_tty_write.constprop.0+0x509/0x9a0 drivers/tty/tty_io.c:1090 new_sync_write fs/read_write.c:590 [inline] vfs_write+0x5b1/0x1150 fs/read_write.c:683 ksys_write+0x12f/0x260 fs/read_write.c:736 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f the dependencies between the lock to be acquired and SOFTIRQ-irq-unsafe lock: -> (tasklist_lock){.+.+}-{2:2} { HARDIRQ-ON-R at: lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5825 __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline] _raw_read_lock+0x5f/0x70 kernel/locking/spinlock.c:228 __do_wait+0x105/0x890 kernel/exit.c:1648 do_wait+0x219/0x570 kernel/exit.c:1692 kernel_wait+0xa0/0x160 kernel/exit.c:1868 call_usermodehelper_exec_sync kernel/umh.c:137 [inline] call_usermodehelper_exec_work+0xf1/0x170 kernel/umh.c:164 process_one_work+0x9c8/0x1ba0 kernel/workqueue.c:3229 process_scheduled_works kernel/workqueue.c:3310 [inline] worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391 kthread+0x2c4/0x3a0 kernel/kthread.c:389 ret_from_fork+0x48/0x80 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.part.0+0x11b/0x380 kernel/locking/lockdep.c:5825 __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline] _raw_read_lock+0x5f/0x70 kernel/locking/spinlock.c:228 __do_wait+0x105/0x890 kernel/exit.c:1648 do_wait+0x219/0x570 kernel/exit.c:1692 kernel_wait+0xa0/0x160 kernel/exit.c:1868 call_usermodehelper_exec_sync kernel/umh.c:137 [inline] call_usermodehelper_exec_work+0xf1/0x170 kernel/umh.c:164 process_one_work+0x9c8/0x1ba0 kernel/workqueue.c:3229 process_scheduled_works kernel/workqueue.c:3310 [inline] worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391 kthread+0x2c4/0x3a0 kernel/kthread.c:389 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 INITIAL USE at: lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5825 __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+0x4181/0x8cb0 kernel/fork.c:2500 kernel_clone+0xfd/0x960 kernel/fork.c:2784 user_mode_thread+0xb4/0xf0 kernel/fork.c:2862 rest_init+0x23/0x2b0 init/main.c:712 start_kernel+0x3e4/0x4d0 init/main.c:1105 x86_64_start_reservations+0x18/0x30 arch/x86/kernel/head64.c:507 x86_64_start_kernel+0xb2/0xc0 arch/x86/kernel/head64.c:488 common_startup_64+0x13e/0x148 INITIAL READ USE at: lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5825 __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline] _raw_read_lock+0x5f/0x70 kernel/locking/spinlock.c:228 __do_wait+0x105/0x890 kernel/exit.c:1648 do_wait+0x219/0x570 kernel/exit.c:1692 kernel_wait+0xa0/0x160 kernel/exit.c:1868 call_usermodehelper_exec_sync kernel/umh.c:137 [inline] call_usermodehelper_exec_work+0xf1/0x170 kernel/umh.c:164 process_one_work+0x9c8/0x1ba0 kernel/workqueue.c:3229 process_scheduled_works kernel/workqueue.c:3310 [inline] worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391 kthread+0x2c4/0x3a0 kernel/kthread.c:389 ret_from_fork+0x48/0x80 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: __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline] _raw_read_lock+0x5f/0x70 kernel/locking/spinlock.c:228 send_sigurg+0xf3/0xc80 fs/fcntl.c:970 sk_send_sigurg+0x76/0x360 net/core/sock.c:3500 tcp_check_urg net/ipv4/tcp_input.c:5865 [inline] tcp_urg+0x343/0xb80 net/ipv4/tcp_input.c:5906 tcp_rcv_established+0x8a6/0x21c0 net/ipv4/tcp_input.c:6261 tcp_v6_do_rcv+0x83c/0x16e0 net/ipv6/tcp_ipv6.c:1641 sk_backlog_rcv include/net/sock.h:1115 [inline] __release_sock+0x14c/0x400 net/core/sock.c:3072 release_sock+0x5a/0x220 net/core/sock.c:3626 tcp_sendmsg+0x38/0x50 net/ipv4/tcp.c:1358 inet6_sendmsg+0xb9/0x140 net/ipv6/af_inet6.c:661 sock_sendmsg_nosec net/socket.c:729 [inline] __sock_sendmsg net/socket.c:744 [inline] __sys_sendto+0x36b/0x4d0 net/socket.c:2214 __do_sys_sendto net/socket.c:2226 [inline] __se_sys_sendto net/socket.c:2222 [inline] __x64_sys_sendto+0xe0/0x1c0 net/socket.c:2222 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> (&f_owner->lock){....}-{2:2} { INITIAL USE at: lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5825 __raw_write_lock_irq include/linux/rwlock_api_smp.h:195 [inline] _raw_write_lock_irq+0x36/0x50 kernel/locking/spinlock.c:326 __f_setown+0x67/0x3c0 fs/fcntl.c:137 generic_add_lease fs/locks.c:1874 [inline] generic_setlease fs/locks.c:1942 [inline] generic_setlease+0xefc/0x1310 fs/locks.c:1929 kernel_setlease+0x106/0x140 fs/locks.c:1991 vfs_setlease+0x258/0x2d0 fs/locks.c:2026 do_fcntl_add_lease fs/locks.c:2047 [inline] fcntl_setlease+0x3ee/0x5a0 fs/locks.c:2069 do_fcntl+0x6d9/0x1510 fs/fcntl.c:531 __do_sys_fcntl fs/fcntl.c:586 [inline] __se_sys_fcntl fs/fcntl.c:571 [inline] __x64_sys_fcntl+0x176/0x210 fs/fcntl.c:571 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f INITIAL READ USE at: lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5825 __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline] _raw_read_lock_irqsave+0x74/0x90 kernel/locking/spinlock.c:236 send_sigio+0x31/0x3e0 fs/fcntl.c:910 dnotify_handle_event+0x164/0x2b0 fs/notify/dnotify/dnotify.c:114 fsnotify_handle_inode_event.isra.0+0x1d3/0x360 fs/notify/fsnotify.c:298 fsnotify_handle_event fs/notify/fsnotify.c:350 [inline] send_to_group fs/notify/fsnotify.c:398 [inline] fsnotify+0x1132/0x1b70 fs/notify/fsnotify.c:607 fsnotify_name include/linux/fsnotify.h:55 [inline] fsnotify_name include/linux/fsnotify.h:48 [inline] fsnotify_move+0x191/0x740 include/linux/fsnotify.h:228 vfs_rename+0x7a0/0x21f0 fs/namei.c:5039 do_renameat2+0xc5f/0xdd0 fs/namei.c:5170 __do_sys_renameat2 fs/namei.c:5204 [inline] __se_sys_renameat2 fs/namei.c:5201 [inline] __x64_sys_renameat2+0xe7/0x130 fs/namei.c:5201 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f } ... key at: [] __key.1+0x0/0x40 ... acquired at: __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline] _raw_read_lock_irqsave+0x74/0x90 kernel/locking/spinlock.c:236 send_sigio+0x31/0x3e0 fs/fcntl.c:910 kill_fasync_rcu fs/fcntl.c:1136 [inline] kill_fasync fs/fcntl.c:1151 [inline] kill_fasync+0x21a/0x520 fs/fcntl.c:1144 lease_break_callback+0x23/0x30 fs/locks.c:558 __break_lease+0x67f/0x17d0 fs/locks.c:1592 break_lease include/linux/filelock.h:436 [inline] do_dentry_open+0x665/0x1530 fs/open.c:949 vfs_open+0x82/0x3f0 fs/open.c:1088 do_open fs/namei.c:3774 [inline] path_openat+0x1e6a/0x2d60 fs/namei.c:3933 do_filp_open+0x1dc/0x430 fs/namei.c:3960 do_sys_openat2+0x17a/0x1e0 fs/open.c:1415 do_sys_open fs/open.c:1430 [inline] __do_sys_creat fs/open.c:1508 [inline] __se_sys_creat fs/open.c:1502 [inline] __x64_sys_creat+0xcd/0x120 fs/open.c:1502 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> (&new->fa_lock){...-}-{2:2} { IN-SOFTIRQ-R at: lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5825 __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline] _raw_read_lock_irqsave+0x46/0x90 kernel/locking/spinlock.c:236 kill_fasync_rcu fs/fcntl.c:1127 [inline] kill_fasync fs/fcntl.c:1151 [inline] kill_fasync+0x138/0x520 fs/fcntl.c:1144 sock_wake_async+0x132/0x160 net/socket.c:1480 sk_wake_async_rcu include/net/sock.h:2452 [inline] sk_wake_async_rcu include/net/sock.h:2449 [inline] sock_def_readable+0x520/0x610 net/core/sock.c:3444 __udp_enqueue_schedule_skb+0x89f/0xcf0 net/ipv4/udp.c:1568 __udpv6_queue_rcv_skb net/ipv6/udp.c:658 [inline] udpv6_queue_rcv_one_skb+0xc62/0x1990 net/ipv6/udp.c:770 udpv6_queue_rcv_skb+0x198/0xd20 net/ipv6/udp.c:788 udp6_unicast_rcv_skb+0x161/0x2f0 net/ipv6/udp.c:928 __udp6_lib_rcv+0xf7e/0x3010 net/ipv6/udp.c:1017 ip6_protocol_deliver_rcu+0x6e7/0x1510 net/ipv6/ip6_input.c:436 ip6_input_finish+0x14f/0x2f0 net/ipv6/ip6_input.c:481 NF_HOOK include/linux/netfilter.h:314 [inline] NF_HOOK include/linux/netfilter.h:308 [inline] ip6_input+0xa1/0xd0 net/ipv6/ip6_input.c:490 dst_input include/net/dst.h:460 [inline] ip6_rcv_finish net/ipv6/ip6_input.c:79 [inline] NF_HOOK include/linux/netfilter.h:314 [inline] NF_HOOK include/linux/netfilter.h:308 [inline] ipv6_rcv+0x265/0x680 net/ipv6/ip6_input.c:309 __netif_receive_skb_one_core+0x12e/0x1e0 net/core/dev.c:5670 __netif_receive_skb+0x1d/0x160 net/core/dev.c:5783 process_backlog+0x443/0x15f0 net/core/dev.c:6115 __napi_poll.constprop.0+0xba/0x550 net/core/dev.c:6779 napi_poll net/core/dev.c:6848 [inline] net_rx_action+0xa92/0x1010 net/core/dev.c:6970 handle_softirqs+0x216/0x8f0 kernel/softirq.c:554 do_softirq kernel/softirq.c:455 [inline] do_softirq+0xb2/0xf0 kernel/softirq.c:442 __local_bh_enable_ip+0x100/0x120 kernel/softirq.c:382 local_bh_enable include/linux/bottom_half.h:33 [inline] rcu_read_unlock_bh include/linux/rcupdate.h:919 [inline] __dev_queue_xmit+0x887/0x4350 net/core/dev.c:4459 dev_queue_xmit include/linux/netdevice.h:3094 [inline] neigh_hh_output include/net/neighbour.h:526 [inline] neigh_output include/net/neighbour.h:540 [inline] ip6_finish_output2+0x11e9/0x1a50 net/ipv6/ip6_output.c:141 __ip6_finish_output net/ipv6/ip6_output.c:215 [inline] ip6_finish_output+0x3f9/0x1300 net/ipv6/ip6_output.c:226 NF_HOOK_COND include/linux/netfilter.h:303 [inline] ip6_output+0x1f8/0x540 net/ipv6/ip6_output.c:247 dst_output include/net/dst.h:450 [inline] ip6_local_out+0xcd/0x4a0 net/ipv6/output_core.c:155 ip6_send_skb+0x112/0x460 net/ipv6/ip6_output.c:1968 udp_v6_send_skb+0x906/0x1820 net/ipv6/udp.c:1294 udpv6_sendmsg+0x253e/0x3030 net/ipv6/udp.c:1590 inet6_sendmsg+0x105/0x140 net/ipv6/af_inet6.c:661 sock_sendmsg_nosec net/socket.c:729 [inline] __sock_sendmsg net/socket.c:744 [inline] __sys_sendto+0x36b/0x4d0 net/socket.c:2214 __do_sys_sendto net/socket.c:2226 [inline] __se_sys_sendto net/socket.c:2222 [inline] __x64_sys_sendto+0xe0/0x1c0 net/socket.c:2222 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f INITIAL USE at: lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5825 __raw_write_lock_irq include/linux/rwlock_api_smp.h:195 [inline] _raw_write_lock_irq+0x36/0x50 kernel/locking/spinlock.c:326 fasync_remove_entry+0xb9/0x1e0 fs/fcntl.c:1004 fasync_helper+0xaf/0xd0 fs/fcntl.c:1107 lease_modify+0x238/0x500 fs/locks.c:1455 locks_remove_lease fs/locks.c:2680 [inline] locks_remove_file+0x299/0x5a0 fs/locks.c:2705 __fput+0x348/0xb60 fs/file_table.c:423 task_work_run+0x151/0x250 kernel/task_work.c:239 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+0x27b/0x2a0 kernel/entry/common.c:218 do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f INITIAL READ USE at: lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5825 __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline] _raw_read_lock_irqsave+0x46/0x90 kernel/locking/spinlock.c:236 kill_fasync_rcu fs/fcntl.c:1127 [inline] kill_fasync fs/fcntl.c:1151 [inline] kill_fasync+0x138/0x520 fs/fcntl.c:1144 sock_wake_async+0x132/0x160 net/socket.c:1480 sk_wake_async_rcu include/net/sock.h:2452 [inline] sk_wake_async_rcu include/net/sock.h:2449 [inline] sock_def_readable+0x520/0x610 net/core/sock.c:3444 __udp_enqueue_schedule_skb+0x89f/0xcf0 net/ipv4/udp.c:1568 __udpv6_queue_rcv_skb net/ipv6/udp.c:658 [inline] udpv6_queue_rcv_one_skb+0xc62/0x1990 net/ipv6/udp.c:770 udpv6_queue_rcv_skb+0x198/0xd20 net/ipv6/udp.c:788 udp6_unicast_rcv_skb+0x161/0x2f0 net/ipv6/udp.c:928 __udp6_lib_rcv+0xf7e/0x3010 net/ipv6/udp.c:1017 ip6_protocol_deliver_rcu+0x6e7/0x1510 net/ipv6/ip6_input.c:436 ip6_input_finish+0x14f/0x2f0 net/ipv6/ip6_input.c:481 NF_HOOK include/linux/netfilter.h:314 [inline] NF_HOOK include/linux/netfilter.h:308 [inline] ip6_input+0xa1/0xd0 net/ipv6/ip6_input.c:490 dst_input include/net/dst.h:460 [inline] ip6_rcv_finish net/ipv6/ip6_input.c:79 [inline] NF_HOOK include/linux/netfilter.h:314 [inline] NF_HOOK include/linux/netfilter.h:308 [inline] ipv6_rcv+0x265/0x680 net/ipv6/ip6_input.c:309 __netif_receive_skb_one_core+0x12e/0x1e0 net/core/dev.c:5670 __netif_receive_skb+0x1d/0x160 net/core/dev.c:5783 process_backlog+0x443/0x15f0 net/core/dev.c:6115 __napi_poll.constprop.0+0xba/0x550 net/core/dev.c:6779 napi_poll net/core/dev.c:6848 [inline] net_rx_action+0xa92/0x1010 net/core/dev.c:6970 handle_softirqs+0x216/0x8f0 kernel/softirq.c:554 do_softirq kernel/softirq.c:455 [inline] do_softirq+0xb2/0xf0 kernel/softirq.c:442 __local_bh_enable_ip+0x100/0x120 kernel/softirq.c:382 local_bh_enable include/linux/bottom_half.h:33 [inline] rcu_read_unlock_bh include/linux/rcupdate.h:919 [inline] __dev_queue_xmit+0x887/0x4350 net/core/dev.c:4459 dev_queue_xmit include/linux/netdevice.h:3094 [inline] neigh_hh_output include/net/neighbour.h:526 [inline] neigh_output include/net/neighbour.h:540 [inline] ip6_finish_output2+0x11e9/0x1a50 net/ipv6/ip6_output.c:141 __ip6_finish_output net/ipv6/ip6_output.c:215 [inline] ip6_finish_output+0x3f9/0x1300 net/ipv6/ip6_output.c:226 NF_HOOK_COND include/linux/netfilter.h:303 [inline] ip6_output+0x1f8/0x540 net/ipv6/ip6_output.c:247 dst_output include/net/dst.h:450 [inline] ip6_local_out+0xcd/0x4a0 net/ipv6/output_core.c:155 ip6_send_skb+0x112/0x460 net/ipv6/ip6_output.c:1968 udp_v6_send_skb+0x906/0x1820 net/ipv6/udp.c:1294 udpv6_sendmsg+0x253e/0x3030 net/ipv6/udp.c:1590 inet6_sendmsg+0x105/0x140 net/ipv6/af_inet6.c:661 sock_sendmsg_nosec net/socket.c:729 [inline] __sock_sendmsg net/socket.c:744 [inline] __sys_sendto+0x36b/0x4d0 net/socket.c:2214 __do_sys_sendto net/socket.c:2226 [inline] __se_sys_sendto net/socket.c:2222 [inline] __x64_sys_sendto+0xe0/0x1c0 net/socket.c:2222 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f } ... key at: [] __key.0+0x0/0x40 ... acquired at: lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5825 __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline] _raw_read_lock_irqsave+0x74/0x90 kernel/locking/spinlock.c:236 kill_fasync_rcu fs/fcntl.c:1127 [inline] kill_fasync fs/fcntl.c:1151 [inline] kill_fasync+0x138/0x520 fs/fcntl.c:1144 __pass_event drivers/input/evdev.c:240 [inline] evdev_pass_values+0x619/0x9b0 drivers/input/evdev.c:278 evdev_events+0x1bb/0x390 drivers/input/evdev.c:306 input_pass_values+0x77a/0x8e0 drivers/input/input.c:126 input_event_dispose drivers/input/input.c:341 [inline] input_handle_event+0xf0b/0x14d0 drivers/input/input.c:369 input_inject_event+0x1bb/0x370 drivers/input/input.c:428 evdev_write+0x44f/0x750 drivers/input/evdev.c:528 vfs_write+0x24f/0x1150 fs/read_write.c:681 ksys_write+0x1fa/0x260 fs/read_write.c:736 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f stack backtrace: CPU: 1 UID: 0 PID: 19632 Comm: syz.6.3861 Not tainted 6.12.0-rc5-syzkaller-00299-g11066801dd4b #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120 print_bad_irq_dependency kernel/locking/lockdep.c:2647 [inline] check_irq_usage+0xf22/0x1290 kernel/locking/lockdep.c:2888 check_prev_add kernel/locking/lockdep.c:3165 [inline] check_prevs_add kernel/locking/lockdep.c:3280 [inline] validate_chain kernel/locking/lockdep.c:3904 [inline] __lock_acquire+0x2521/0x3ce0 kernel/locking/lockdep.c:5202 lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5825 __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline] _raw_read_lock_irqsave+0x74/0x90 kernel/locking/spinlock.c:236 kill_fasync_rcu fs/fcntl.c:1127 [inline] kill_fasync fs/fcntl.c:1151 [inline] kill_fasync+0x138/0x520 fs/fcntl.c:1144 __pass_event drivers/input/evdev.c:240 [inline] evdev_pass_values+0x619/0x9b0 drivers/input/evdev.c:278 evdev_events+0x1bb/0x390 drivers/input/evdev.c:306 input_pass_values+0x77a/0x8e0 drivers/input/input.c:126 input_event_dispose drivers/input/input.c:341 [inline] input_handle_event+0xf0b/0x14d0 drivers/input/input.c:369 input_inject_event+0x1bb/0x370 drivers/input/input.c:428 evdev_write+0x44f/0x750 drivers/input/evdev.c:528 vfs_write+0x24f/0x1150 fs/read_write.c:681 ksys_write+0x1fa/0x260 fs/read_write.c:736 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fcfc037e719 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fcfc109e038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007fcfc0535f80 RCX: 00007fcfc037e719 RDX: 0000000000001068 RSI: 0000000020000040 RDI: 0000000000000005 RBP: 00007fcfc03f132e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fcfc0535f80 R15: 00007ffe3a1452e8