===================================================== WARNING: HARDIRQ-safe -> HARDIRQ-unsafe lock order detected 6.5.0-rc6-syzkaller-00036-g4853c74bd7ab #0 Not tainted ----------------------------------------------------- syz-executor.0/5435 [HC0[0]:SC0[0]:HE0:SE1] is trying to acquire: ffff88802c301018 (&f->f_owner.lock){....}-{2:2}, at: send_sigio+0x2f/0x330 fs/fcntl.c:779 and this task is already holding: ffff88802b1de018 (&new->fa_lock){....}-{2:2}, at: kill_fasync_rcu fs/fcntl.c:997 [inline] ffff88802b1de018 (&new->fa_lock){....}-{2:2}, at: kill_fasync+0x16a/0x490 fs/fcntl.c:1018 which would create a new lock dependency: (&new->fa_lock){....}-{2:2} -> (&f->f_owner.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+0x1df/0x520 kernel/locking/lockdep.c:5761 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xd1/0x120 kernel/locking/spinlock.c:162 input_event+0x8d/0xd0 drivers/input/input.c:434 input_report_key include/linux/input.h:425 [inline] psmouse_report_standard_buttons drivers/input/mouse/psmouse-base.c:128 [inline] psmouse_report_standard_packet+0x50/0x200 drivers/input/mouse/psmouse-base.c:146 psmouse_process_byte+0x45b/0x640 drivers/input/mouse/psmouse-base.c:237 psmouse_handle_byte+0x46/0x4b0 drivers/input/mouse/psmouse-base.c:279 ps2_interrupt+0x170/0x8c0 drivers/input/serio/libps2.c:613 serio_interrupt+0x88/0x130 drivers/input/serio/serio.c:998 i8042_interrupt+0x357/0x750 drivers/input/serio/i8042.c:606 __handle_irq_event_percpu+0x282/0xa10 kernel/irq/handle.c:158 handle_irq_event_percpu kernel/irq/handle.c:193 [inline] handle_irq_event+0x85/0x1e0 kernel/irq/handle.c:210 handle_edge_irq+0x245/0xbf0 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+0xd7/0x1f0 arch/x86/kernel/irq.c:257 common_interrupt+0x9f/0xc0 arch/x86/kernel/irq.c:247 asm_common_interrupt+0x22/0x40 arch/x86/include/asm/idtentry.h:636 memset_orig+0x36/0xac arch/x86/lib/memset_64.S:67 __unwind_start+0x32/0x720 arch/x86/kernel/unwind_orc.c:688 unwind_start arch/x86/include/asm/unwind.h:64 [inline] arch_stack_walk+0xdb/0x140 arch/x86/kernel/stacktrace.c:24 stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4b/0x70 mm/kasan/common.c:52 ____kasan_kmalloc mm/kasan/common.c:374 [inline] __kasan_kmalloc+0x94/0xa0 mm/kasan/common.c:383 kasan_kmalloc include/linux/kasan.h:196 [inline] __do_kmalloc_node mm/slab_common.c:985 [inline] __kmalloc+0xb5/0x220 mm/slab_common.c:998 kmalloc include/linux/slab.h:586 [inline] kzalloc include/linux/slab.h:703 [inline] lsm_cred_alloc security/security.c:576 [inline] security_prepare_creds+0x48/0x130 security/security.c:2911 prepare_creds+0x454/0x630 kernel/cred.c:291 copy_creds+0x146/0xc90 kernel/cred.c:365 copy_process+0x9ce/0x4280 kernel/fork.c:2364 kernel_clone+0x219/0x860 kernel/fork.c:2912 user_mode_thread+0x12e/0x190 kernel/fork.c:2990 call_usermodehelper_exec_work+0x58/0x220 kernel/umh.c:172 process_one_work+0x920/0x12a0 kernel/workqueue.c:2600 worker_thread+0xa5f/0x1210 kernel/workqueue.c:2751 kthread+0x2b0/0x340 kernel/kthread.c:389 ret_from_fork+0x2a/0x60 arch/x86/kernel/process.c:145 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304 to a HARDIRQ-irq-unsafe lock: (tasklist_lock){.+.+}-{2:2} ... which became HARDIRQ-irq-unsafe at: ... lock_acquire+0x1df/0x520 kernel/locking/lockdep.c:5761 __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline] _raw_read_lock+0x32/0x40 kernel/locking/spinlock.c:228 do_wait+0x2a9/0xaf0 kernel/exit.c:1607 kernel_wait+0xe5/0x230 kernel/exit.c:1797 call_usermodehelper_exec_sync kernel/umh.c:137 [inline] call_usermodehelper_exec_work+0xb5/0x220 kernel/umh.c:164 process_one_work+0x920/0x12a0 kernel/workqueue.c:2600 worker_thread+0xa5f/0x1210 kernel/workqueue.c:2751 kthread+0x2b0/0x340 kernel/kthread.c:389 ret_from_fork+0x2a/0x60 arch/x86/kernel/process.c:145 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304 other info that might help us debug this: Chain exists of: &dev->event_lock#2 --> &new->fa_lock --> tasklist_lock Possible interrupt unsafe locking scenario: CPU0 CPU1 ---- ---- lock(tasklist_lock); local_irq_disable(); lock(&dev->event_lock#2); lock(&new->fa_lock); lock(&dev->event_lock#2); *** DEADLOCK *** 8 locks held by syz-executor.0/5435: #0: ffff888024012110 (&evdev->mutex){+.+.}-{3:3}, at: evdev_write+0x26d/0x7c0 drivers/input/evdev.c:513 #1: ffff888023ce1230 (&dev->event_lock#2){-...}-{2:2}, at: input_inject_event+0xc1/0x300 drivers/input/input.c:460 #2: ffffffff8d128120 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:302 #3: ffffffff8d128120 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:302 #4: ffffffff8d128120 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:302 #5: ffff88802a2c3028 (&client->buffer_lock){....}-{2:2}, at: spin_lock include/linux/spinlock.h:351 [inline] #5: ffff88802a2c3028 (&client->buffer_lock){....}-{2:2}, at: evdev_pass_values+0xee/0xad0 drivers/input/evdev.c:261 #6: ffffffff8d128120 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:302 #7: ffff88802b1de018 (&new->fa_lock){....}-{2:2}, at: kill_fasync_rcu fs/fcntl.c:997 [inline] #7: ffff88802b1de018 (&new->fa_lock){....}-{2:2}, at: kill_fasync+0x16a/0x490 fs/fcntl.c:1018 the dependencies between HARDIRQ-irq-safe lock and the holding lock: -> (&dev->event_lock#2){-...}-{2:2} { IN-HARDIRQ-W at: lock_acquire+0x1df/0x520 kernel/locking/lockdep.c:5761 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xd1/0x120 kernel/locking/spinlock.c:162 input_event+0x8d/0xd0 drivers/input/input.c:434 input_report_key include/linux/input.h:425 [inline] psmouse_report_standard_buttons drivers/input/mouse/psmouse-base.c:128 [inline] psmouse_report_standard_packet+0x50/0x200 drivers/input/mouse/psmouse-base.c:146 psmouse_process_byte+0x45b/0x640 drivers/input/mouse/psmouse-base.c:237 psmouse_handle_byte+0x46/0x4b0 drivers/input/mouse/psmouse-base.c:279 ps2_interrupt+0x170/0x8c0 drivers/input/serio/libps2.c:613 serio_interrupt+0x88/0x130 drivers/input/serio/serio.c:998 i8042_interrupt+0x357/0x750 drivers/input/serio/i8042.c:606 __handle_irq_event_percpu+0x282/0xa10 kernel/irq/handle.c:158 handle_irq_event_percpu kernel/irq/handle.c:193 [inline] handle_irq_event+0x85/0x1e0 kernel/irq/handle.c:210 handle_edge_irq+0x245/0xbf0 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+0xd7/0x1f0 arch/x86/kernel/irq.c:257 common_interrupt+0x9f/0xc0 arch/x86/kernel/irq.c:247 asm_common_interrupt+0x22/0x40 arch/x86/include/asm/idtentry.h:636 memset_orig+0x36/0xac arch/x86/lib/memset_64.S:67 __unwind_start+0x32/0x720 arch/x86/kernel/unwind_orc.c:688 unwind_start arch/x86/include/asm/unwind.h:64 [inline] arch_stack_walk+0xdb/0x140 arch/x86/kernel/stacktrace.c:24 stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4b/0x70 mm/kasan/common.c:52 ____kasan_kmalloc mm/kasan/common.c:374 [inline] __kasan_kmalloc+0x94/0xa0 mm/kasan/common.c:383 kasan_kmalloc include/linux/kasan.h:196 [inline] __do_kmalloc_node mm/slab_common.c:985 [inline] __kmalloc+0xb5/0x220 mm/slab_common.c:998 kmalloc include/linux/slab.h:586 [inline] kzalloc include/linux/slab.h:703 [inline] lsm_cred_alloc security/security.c:576 [inline] security_prepare_creds+0x48/0x130 security/security.c:2911 prepare_creds+0x454/0x630 kernel/cred.c:291 copy_creds+0x146/0xc90 kernel/cred.c:365 copy_process+0x9ce/0x4280 kernel/fork.c:2364 kernel_clone+0x219/0x860 kernel/fork.c:2912 user_mode_thread+0x12e/0x190 kernel/fork.c:2990 call_usermodehelper_exec_work+0x58/0x220 kernel/umh.c:172 process_one_work+0x920/0x12a0 kernel/workqueue.c:2600 worker_thread+0xa5f/0x1210 kernel/workqueue.c:2751 kthread+0x2b0/0x340 kernel/kthread.c:389 ret_from_fork+0x2a/0x60 arch/x86/kernel/process.c:145 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304 INITIAL USE at: lock_acquire+0x1df/0x520 kernel/locking/lockdep.c:5761 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xd1/0x120 kernel/locking/spinlock.c:162 input_inject_event+0xc1/0x300 drivers/input/input.c:460 led_trigger_event+0xed/0x1a0 drivers/leds/led-triggers.c:391 kbd_led_trigger_activate+0xb9/0x100 drivers/tty/vt/keyboard.c:1036 led_trigger_set+0x536/0x930 drivers/leds/led-triggers.c:198 led_trigger_set_default+0x1c2/0x200 drivers/leds/led-triggers.c:263 led_classdev_register_ext+0x600/0x7e0 drivers/leds/led-class.c:514 led_classdev_register include/linux/leds.h:278 [inline] input_leds_connect+0x48f/0x630 drivers/input/input-leds.c:139 input_attach_handler drivers/input/input.c:1064 [inline] input_register_device+0xcec/0x1080 drivers/input/input.c:2396 atkbd_connect+0x74e/0xa00 drivers/input/keyboard/atkbd.c:1298 serio_connect_driver drivers/input/serio/serio.c:44 [inline] serio_driver_probe+0x74/0x90 drivers/input/serio/serio.c:775 really_probe+0x294/0xc20 drivers/base/dd.c:658 __driver_probe_device+0x1a2/0x3d0 drivers/base/dd.c:798 driver_probe_device+0x50/0x420 drivers/base/dd.c:828 __driver_attach+0x458/0x6f0 drivers/base/dd.c:1214 bus_for_each_dev+0x232/0x2b0 drivers/base/bus.c:368 serio_attach_driver drivers/input/serio/serio.c:804 [inline] serio_handle_event+0x56a/0x8f0 drivers/input/serio/serio.c:224 process_one_work+0x920/0x12a0 kernel/workqueue.c:2600 worker_thread+0xa5f/0x1210 kernel/workqueue.c:2751 kthread+0x2b0/0x340 kernel/kthread.c:389 ret_from_fork+0x2a/0x60 arch/x86/kernel/process.c:145 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304 } ... key at: [] input_allocate_device.__key.5+0x0/0x20 -> (&client->buffer_lock){....}-{2:2} { INITIAL USE at: lock_acquire+0x1df/0x520 kernel/locking/lockdep.c:5761 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:351 [inline] evdev_pass_values+0xee/0xad0 drivers/input/evdev.c:261 evdev_events+0x198/0x2c0 drivers/input/evdev.c:306 input_to_handler drivers/input/input.c:129 [inline] input_pass_values+0x8dc/0x1290 drivers/input/input.c:161 input_event_dispose+0x366/0x650 drivers/input/input.c:378 input_handle_event+0x97d/0xb00 drivers/input/input.c:406 input_inject_event+0x1fd/0x300 drivers/input/input.c:465 evdev_write+0x668/0x7c0 drivers/input/evdev.c:530 vfs_write+0x282/0xaf0 fs/read_write.c:582 ksys_write+0x19c/0x2c0 fs/read_write.c:637 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd } ... key at: [] evdev_open.__key.24+0x0/0x20 ... acquired at: __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:351 [inline] evdev_pass_values+0xee/0xad0 drivers/input/evdev.c:261 evdev_events+0x198/0x2c0 drivers/input/evdev.c:306 input_to_handler drivers/input/input.c:129 [inline] input_pass_values+0x8dc/0x1290 drivers/input/input.c:161 input_event_dispose+0x366/0x650 drivers/input/input.c:378 input_handle_event+0x97d/0xb00 drivers/input/input.c:406 input_inject_event+0x1fd/0x300 drivers/input/input.c:465 evdev_write+0x668/0x7c0 drivers/input/evdev.c:530 vfs_write+0x282/0xaf0 fs/read_write.c:582 ksys_write+0x19c/0x2c0 fs/read_write.c:637 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/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+0x1df/0x520 kernel/locking/lockdep.c:5761 __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline] _raw_read_lock_irqsave+0xd9/0x120 kernel/locking/spinlock.c:236 kill_fasync_rcu fs/fcntl.c:997 [inline] kill_fasync+0x16a/0x490 fs/fcntl.c:1018 __pass_event drivers/input/evdev.c:240 [inline] evdev_pass_values+0x586/0xad0 drivers/input/evdev.c:278 evdev_events+0x198/0x2c0 drivers/input/evdev.c:306 input_to_handler drivers/input/input.c:129 [inline] input_pass_values+0x8dc/0x1290 drivers/input/input.c:161 input_event_dispose+0x366/0x650 drivers/input/input.c:378 input_handle_event+0x97d/0xb00 drivers/input/input.c:406 input_inject_event+0x1fd/0x300 drivers/input/input.c:465 evdev_write+0x668/0x7c0 drivers/input/evdev.c:530 vfs_write+0x282/0xaf0 fs/read_write.c:582 ksys_write+0x19c/0x2c0 fs/read_write.c:637 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd } ... key at: [] fasync_insert_entry.__key+0x0/0x20 ... acquired at: __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline] _raw_read_lock_irqsave+0xd9/0x120 kernel/locking/spinlock.c:236 kill_fasync_rcu fs/fcntl.c:997 [inline] kill_fasync+0x16a/0x490 fs/fcntl.c:1018 __pass_event drivers/input/evdev.c:240 [inline] evdev_pass_values+0x586/0xad0 drivers/input/evdev.c:278 evdev_events+0x198/0x2c0 drivers/input/evdev.c:306 input_to_handler drivers/input/input.c:129 [inline] input_pass_values+0x8dc/0x1290 drivers/input/input.c:161 input_event_dispose+0x366/0x650 drivers/input/input.c:378 input_handle_event+0x97d/0xb00 drivers/input/input.c:406 input_inject_event+0x1fd/0x300 drivers/input/input.c:465 evdev_write+0x668/0x7c0 drivers/input/evdev.c:530 vfs_write+0x282/0xaf0 fs/read_write.c:582 ksys_write+0x19c/0x2c0 fs/read_write.c:637 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/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+0x1df/0x520 kernel/locking/lockdep.c:5761 __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline] _raw_read_lock+0x32/0x40 kernel/locking/spinlock.c:228 do_wait+0x2a9/0xaf0 kernel/exit.c:1607 kernel_wait+0xe5/0x230 kernel/exit.c:1797 call_usermodehelper_exec_sync kernel/umh.c:137 [inline] call_usermodehelper_exec_work+0xb5/0x220 kernel/umh.c:164 process_one_work+0x920/0x12a0 kernel/workqueue.c:2600 worker_thread+0xa5f/0x1210 kernel/workqueue.c:2751 kthread+0x2b0/0x340 kernel/kthread.c:389 ret_from_fork+0x2a/0x60 arch/x86/kernel/process.c:145 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304 SOFTIRQ-ON-R at: lock_acquire+0x1df/0x520 kernel/locking/lockdep.c:5761 __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline] _raw_read_lock+0x32/0x40 kernel/locking/spinlock.c:228 do_wait+0x2a9/0xaf0 kernel/exit.c:1607 kernel_wait+0xe5/0x230 kernel/exit.c:1797 call_usermodehelper_exec_sync kernel/umh.c:137 [inline] call_usermodehelper_exec_work+0xb5/0x220 kernel/umh.c:164 process_one_work+0x920/0x12a0 kernel/workqueue.c:2600 worker_thread+0xa5f/0x1210 kernel/workqueue.c:2751 kthread+0x2b0/0x340 kernel/kthread.c:389 ret_from_fork+0x2a/0x60 arch/x86/kernel/process.c:145 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304 INITIAL USE at: lock_acquire+0x1df/0x520 kernel/locking/lockdep.c:5761 __raw_write_lock_irq include/linux/rwlock_api_smp.h:195 [inline] _raw_write_lock_irq+0xcf/0x110 kernel/locking/spinlock.c:326 copy_process+0x259c/0x4280 kernel/fork.c:2629 kernel_clone+0x219/0x860 kernel/fork.c:2912 user_mode_thread+0x12e/0x190 kernel/fork.c:2990 rest_init+0x21/0x2b0 init/main.c:691 arch_call_rest_init+0xa/0x10 init/main.c:823 start_kernel+0x46a/0x4f0 init/main.c:1068 x86_64_start_reservations+0x26/0x30 arch/x86/kernel/head64.c:556 x86_64_start_kernel+0x95/0xa0 arch/x86/kernel/head64.c:537 secondary_startup_64_no_verify+0x168/0x16b INITIAL READ USE at: lock_acquire+0x1df/0x520 kernel/locking/lockdep.c:5761 __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline] _raw_read_lock+0x32/0x40 kernel/locking/spinlock.c:228 do_wait+0x2a9/0xaf0 kernel/exit.c:1607 kernel_wait+0xe5/0x230 kernel/exit.c:1797 call_usermodehelper_exec_sync kernel/umh.c:137 [inline] call_usermodehelper_exec_work+0xb5/0x220 kernel/umh.c:164 process_one_work+0x920/0x12a0 kernel/workqueue.c:2600 worker_thread+0xa5f/0x1210 kernel/workqueue.c:2751 kthread+0x2b0/0x340 kernel/kthread.c:389 ret_from_fork+0x2a/0x60 arch/x86/kernel/process.c:145 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304 } ... key at: [] tasklist_lock+0x18/0x40 ... acquired at: __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline] _raw_read_lock+0x32/0x40 kernel/locking/spinlock.c:228 send_sigurg+0xc8/0x380 fs/fcntl.c:834 sk_send_sigurg+0x6a/0xb0 net/core/sock.c:3380 queue_oob+0x626/0x8e0 net/unix/af_unix.c:2161 unix_stream_sendmsg+0xfcc/0x1220 net/unix/af_unix.c:2278 sock_sendmsg_nosec net/socket.c:725 [inline] sock_sendmsg net/socket.c:748 [inline] ____sys_sendmsg+0x58e/0x880 net/socket.c:2494 ___sys_sendmsg net/socket.c:2548 [inline] __sys_sendmsg+0x2ac/0x390 net/socket.c:2577 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/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+0x1df/0x520 kernel/locking/lockdep.c:5761 __raw_write_lock_irq include/linux/rwlock_api_smp.h:195 [inline] _raw_write_lock_irq+0xcf/0x110 kernel/locking/spinlock.c:326 f_modown+0x38/0x340 fs/fcntl.c:92 __f_setown fs/fcntl.c:111 [inline] f_setown+0x127/0x1d0 fs/fcntl.c:139 do_fcntl+0x128/0x14a0 fs/fcntl.c:378 __do_sys_fcntl fs/fcntl.c:455 [inline] __se_sys_fcntl+0xd5/0x1b0 fs/fcntl.c:440 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd INITIAL READ USE at: lock_acquire+0x1df/0x520 kernel/locking/lockdep.c:5761 __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline] _raw_read_lock_irqsave+0xd9/0x120 kernel/locking/spinlock.c:236 send_sigurg+0x25/0x380 fs/fcntl.c:818 sk_send_sigurg+0x6a/0xb0 net/core/sock.c:3380 queue_oob+0x626/0x8e0 net/unix/af_unix.c:2161 unix_stream_sendmsg+0xfcc/0x1220 net/unix/af_unix.c:2278 sock_sendmsg_nosec net/socket.c:725 [inline] sock_sendmsg net/socket.c:748 [inline] ____sys_sendmsg+0x58e/0x880 net/socket.c:2494 ___sys_sendmsg net/socket.c:2548 [inline] __sys_sendmsg+0x2ac/0x390 net/socket.c:2577 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd } ... key at: [] init_file.__key+0x0/0x20 ... acquired at: __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline] _raw_read_lock_irqsave+0xd9/0x120 kernel/locking/spinlock.c:236 send_sigio+0x2f/0x330 fs/fcntl.c:779 kill_fasync_rcu fs/fcntl.c:1004 [inline] kill_fasync+0x20c/0x490 fs/fcntl.c:1018 __pass_event drivers/input/evdev.c:240 [inline] evdev_pass_values+0x586/0xad0 drivers/input/evdev.c:278 evdev_events+0x198/0x2c0 drivers/input/evdev.c:306 input_to_handler drivers/input/input.c:129 [inline] input_pass_values+0x8dc/0x1290 drivers/input/input.c:161 input_event_dispose+0x366/0x650 drivers/input/input.c:378 input_handle_event+0x97d/0xb00 drivers/input/input.c:406 input_inject_event+0x1fd/0x300 drivers/input/input.c:465 evdev_write+0x668/0x7c0 drivers/input/evdev.c:530 vfs_write+0x282/0xaf0 fs/read_write.c:582 ksys_write+0x19c/0x2c0 fs/read_write.c:637 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd stack backtrace: CPU: 1 PID: 5435 Comm: syz-executor.0 Not tainted 6.5.0-rc6-syzkaller-00036-g4853c74bd7ab #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106 print_bad_irq_dependency kernel/locking/lockdep.c:2634 [inline] check_irq_usage kernel/locking/lockdep.c:2873 [inline] 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+0x73ed/0x7f70 kernel/locking/lockdep.c:5144 lock_acquire+0x1df/0x520 kernel/locking/lockdep.c:5761 __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline] _raw_read_lock_irqsave+0xd9/0x120 kernel/locking/spinlock.c:236 send_sigio+0x2f/0x330 fs/fcntl.c:779 kill_fasync_rcu fs/fcntl.c:1004 [inline] kill_fasync+0x20c/0x490 fs/fcntl.c:1018 __pass_event drivers/input/evdev.c:240 [inline] evdev_pass_values+0x586/0xad0 drivers/input/evdev.c:278 evdev_events+0x198/0x2c0 drivers/input/evdev.c:306 input_to_handler drivers/input/input.c:129 [inline] input_pass_values+0x8dc/0x1290 drivers/input/input.c:161 input_event_dispose+0x366/0x650 drivers/input/input.c:378 input_handle_event+0x97d/0xb00 drivers/input/input.c:406 input_inject_event+0x1fd/0x300 drivers/input/input.c:465 evdev_write+0x668/0x7c0 drivers/input/evdev.c:530 vfs_write+0x282/0xaf0 fs/read_write.c:582 ksys_write+0x19c/0x2c0 fs/read_write.c:637 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f44ec87cae9 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:00007f44ed5250c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f44ec99bf80 RCX: 00007f44ec87cae9 RDX: 0000000000002778 RSI: 0000000020000040 RDI: 0000000000000006 RBP: 00007f44ec8c847a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f44ec99bf80 R15: 00007fffe90425d8