===================================================== WARNING: HARDIRQ-safe -> HARDIRQ-unsafe lock order detected 6.9.0-rc4-syzkaller-00214-g13a2e429f644-dirty #0 Not tainted ----------------------------------------------------- syz-executor.0/5495 [HC0[0]:SC0[0]:HE0:SE1] is trying to acquire: ffffffff8e00a058 (tasklist_lock){.+.+}-{2:2}, at: send_sigurg+0xee/0x3c0 fs/fcntl.c:851 and this task is already holding: ffff88801c7f4398 (&f->f_owner.lock){....}-{2:2}, at: send_sigurg+0x29/0x3c0 fs/fcntl.c:835 which would create a new lock dependency: (&f->f_owner.lock){....}-{2:2} -> (tasklist_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+0x1ed/0x550 kernel/locking/lockdep.c:5754 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162 input_event+0x91/0xd0 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+0x54/0x200 drivers/input/mouse/psmouse-base.c:146 psmouse_process_byte+0x48c/0x680 drivers/input/mouse/psmouse-base.c:237 psmouse_handle_byte+0x49/0x4c0 drivers/input/mouse/psmouse-base.c:279 ps2_interrupt+0x17c/0x8e0 drivers/input/serio/libps2.c:613 serio_interrupt+0x90/0x140 drivers/input/serio/serio.c:998 i8042_interrupt+0x375/0x770 drivers/input/serio/i8042.c:606 __handle_irq_event_percpu+0x29a/0xa80 kernel/irq/handle.c:158 handle_irq_event_percpu kernel/irq/handle.c:193 [inline] handle_irq_event+0x89/0x1f0 kernel/irq/handle.c:210 handle_edge_irq+0x25f/0xc20 kernel/irq/chip.c:831 generic_handle_irq_desc include/linux/irqdesc.h:161 [inline] handle_irq arch/x86/kernel/irq.c:238 [inline] __common_interrupt+0x138/0x230 arch/x86/kernel/irq.c:257 common_interrupt+0xa5/0xd0 arch/x86/kernel/irq.c:247 asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:693 pv_queued_spin_unlock arch/x86/include/asm/paravirt.h:589 [inline] queued_spin_unlock arch/x86/include/asm/qspinlock.h:57 [inline] do_raw_spin_unlock+0x118/0x8b0 kernel/locking/spinlock_debug.c:142 __raw_spin_unlock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_unlock+0x1e/0x50 kernel/locking/spinlock.c:186 usb_device_match+0x41b/0x4a0 drivers/usb/core/driver.c:897 driver_match_device drivers/base/base.h:167 [inline] __driver_attach+0x6c/0x710 drivers/base/dd.c:1170 bus_for_each_dev+0x239/0x2b0 drivers/base/bus.c:368 bus_add_driver+0x347/0x620 drivers/base/bus.c:673 driver_register+0x23a/0x320 drivers/base/driver.c:246 usb_register_driver+0x1f5/0x3b0 drivers/usb/core/driver.c:1068 do_one_initcall+0x248/0x880 init/main.c:1245 do_initcall_level+0x157/0x210 init/main.c:1307 do_initcalls+0x3f/0x80 init/main.c:1323 kernel_init_freeable+0x435/0x5d0 init/main.c:1555 kernel_init+0x1d/0x2b0 init/main.c:1444 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 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:1587 do_wait+0x1e9/0x560 kernel/exit.c:1631 kernel_wait+0xe9/0x240 kernel/exit.c:1807 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:3254 [inline] process_scheduled_works+0xa10/0x17c0 kernel/workqueue.c:3335 worker_thread+0x86d/0xd70 kernel/workqueue.c:3416 kthread+0x2f0/0x390 kernel/kthread.c:388 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: &dev->event_lock#2 --> &f->f_owner.lock --> tasklist_lock Possible interrupt unsafe locking scenario: CPU0 CPU1 ---- ---- lock(tasklist_lock); local_irq_disable(); lock(&dev->event_lock#2); lock(&f->f_owner.lock); lock(&dev->event_lock#2); *** DEADLOCK *** 2 locks held by syz-executor.0/5495: #0: ffff88802b50d058 (sk_lock-AF_INET6){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1671 [inline] #0: ffff88802b50d058 (sk_lock-AF_INET6){+.+.}-{0:0}, at: tcp_sendmsg+0x22/0x50 net/ipv4/tcp.c:1341 #1: ffff88801c7f4398 (&f->f_owner.lock){....}-{2:2}, at: send_sigurg+0x29/0x3c0 fs/fcntl.c:835 the dependencies between HARDIRQ-irq-safe lock and the holding lock: -> (&dev->event_lock#2){-...}-{2:2} { IN-HARDIRQ-W at: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162 input_event+0x91/0xd0 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+0x54/0x200 drivers/input/mouse/psmouse-base.c:146 psmouse_process_byte+0x48c/0x680 drivers/input/mouse/psmouse-base.c:237 psmouse_handle_byte+0x49/0x4c0 drivers/input/mouse/psmouse-base.c:279 ps2_interrupt+0x17c/0x8e0 drivers/input/serio/libps2.c:613 serio_interrupt+0x90/0x140 drivers/input/serio/serio.c:998 i8042_interrupt+0x375/0x770 drivers/input/serio/i8042.c:606 __handle_irq_event_percpu+0x29a/0xa80 kernel/irq/handle.c:158 handle_irq_event_percpu kernel/irq/handle.c:193 [inline] handle_irq_event+0x89/0x1f0 kernel/irq/handle.c:210 handle_edge_irq+0x25f/0xc20 kernel/irq/chip.c:831 generic_handle_irq_desc include/linux/irqdesc.h:161 [inline] handle_irq arch/x86/kernel/irq.c:238 [inline] __common_interrupt+0x138/0x230 arch/x86/kernel/irq.c:257 common_interrupt+0xa5/0xd0 arch/x86/kernel/irq.c:247 asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:693 pv_queued_spin_unlock arch/x86/include/asm/paravirt.h:589 [inline] queued_spin_unlock arch/x86/include/asm/qspinlock.h:57 [inline] do_raw_spin_unlock+0x118/0x8b0 kernel/locking/spinlock_debug.c:142 __raw_spin_unlock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_unlock+0x1e/0x50 kernel/locking/spinlock.c:186 usb_device_match+0x41b/0x4a0 drivers/usb/core/driver.c:897 driver_match_device drivers/base/base.h:167 [inline] __driver_attach+0x6c/0x710 drivers/base/dd.c:1170 bus_for_each_dev+0x239/0x2b0 drivers/base/bus.c:368 bus_add_driver+0x347/0x620 drivers/base/bus.c:673 driver_register+0x23a/0x320 drivers/base/driver.c:246 usb_register_driver+0x1f5/0x3b0 drivers/usb/core/driver.c:1068 do_one_initcall+0x248/0x880 init/main.c:1245 do_initcall_level+0x157/0x210 init/main.c:1307 do_initcalls+0x3f/0x80 init/main.c:1323 kernel_init_freeable+0x435/0x5d0 init/main.c:1555 kernel_init+0x1d/0x2b0 init/main.c:1444 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_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162 input_inject_event+0xc5/0x340 drivers/input/input.c:460 led_trigger_event+0x11c/0x1e0 drivers/leds/led-triggers.c:392 kbd_led_trigger_activate+0xbd/0x100 drivers/tty/vt/keyboard.c:1036 led_trigger_set+0x541/0x950 drivers/leds/led-triggers.c:198 led_match_default_trigger drivers/leds/led-triggers.c:256 [inline] led_trigger_set_default+0x229/0x260 drivers/leds/led-triggers.c:274 led_classdev_register_ext+0x773/0x960 drivers/leds/led-class.c:561 led_classdev_register include/linux/leds.h:271 [inline] input_leds_connect+0x497/0x640 drivers/input/input-leds.c:145 input_attach_handler drivers/input/input.c:1064 [inline] input_register_device+0xcfa/0x1090 drivers/input/input.c:2396 atkbd_connect+0x752/0xa00 drivers/input/keyboard/atkbd.c:1342 serio_connect_driver drivers/input/serio/serio.c:44 [inline] serio_driver_probe+0x7f/0xa0 drivers/input/serio/serio.c:775 really_probe+0x2b8/0xad0 drivers/base/dd.c:656 __driver_probe_device+0x1a2/0x390 drivers/base/dd.c:798 driver_probe_device+0x50/0x430 drivers/base/dd.c:828 __driver_attach+0x45f/0x710 drivers/base/dd.c:1214 bus_for_each_dev+0x239/0x2b0 drivers/base/bus.c:368 serio_attach_driver drivers/input/serio/serio.c:804 [inline] serio_handle_event+0x1c7/0x920 drivers/input/serio/serio.c:224 process_one_work kernel/workqueue.c:3254 [inline] process_scheduled_works+0xa10/0x17c0 kernel/workqueue.c:3335 worker_thread+0x86d/0xd70 kernel/workqueue.c:3416 kthread+0x2f0/0x390 kernel/kthread.c:388 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: [] input_allocate_device.__key.5+0x0/0x20 -> (&client->buffer_lock){....}-{2:2} { 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+0x2a4/0xcb0 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+0xf5/0x240 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f } ... key at: [] evdev_open.__key.24+0x0/0x20 ... acquired 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+0x2a4/0xcb0 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+0xf5/0x240 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> (&new->fa_lock){....}-{2:2} { 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:1008 [inline] kill_fasync+0x19e/0x4d0 fs/fcntl.c:1029 __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+0x2a4/0xcb0 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+0xf5/0x240 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:1008 [inline] kill_fasync+0x19e/0x4d0 fs/fcntl.c:1029 __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+0x2a4/0xcb0 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+0xf5/0x240 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> (&f->f_owner.lock){....}-{2:2} { 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 __f_setown fs/fcntl.c:112 [inline] f_setown+0x14f/0x200 fs/fcntl.c:140 do_fcntl+0x8b1/0x16f0 fs/fcntl.c:393 __do_sys_fcntl fs/fcntl.c:472 [inline] __se_sys_fcntl+0xd2/0x1b0 fs/fcntl.c:457 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf5/0x240 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_sigio+0x33/0x360 fs/fcntl.c:796 kill_fasync_rcu fs/fcntl.c:1015 [inline] kill_fasync+0x23a/0x4d0 fs/fcntl.c:1029 __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+0x2a4/0xcb0 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+0xf5/0x240 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:796 kill_fasync_rcu fs/fcntl.c:1015 [inline] kill_fasync+0x23a/0x4d0 fs/fcntl.c:1029 __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+0x2a4/0xcb0 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+0xf5/0x240 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f 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:1587 do_wait+0x1e9/0x560 kernel/exit.c:1631 kernel_wait+0xe9/0x240 kernel/exit.c:1807 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:3254 [inline] process_scheduled_works+0xa10/0x17c0 kernel/workqueue.c:3335 worker_thread+0x86d/0xd70 kernel/workqueue.c:3416 kthread+0x2f0/0x390 kernel/kthread.c:388 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:1587 do_wait+0x1e9/0x560 kernel/exit.c:1631 kernel_wait+0xe9/0x240 kernel/exit.c:1807 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:3254 [inline] process_scheduled_works+0xa10/0x17c0 kernel/workqueue.c:3335 worker_thread+0x86d/0xd70 kernel/workqueue.c:3416 kthread+0x2f0/0x390 kernel/kthread.c:388 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/0x3df0 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:704 start_kernel+0x47a/0x500 init/main.c:1081 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:1587 do_wait+0x1e9/0x560 kernel/exit.c:1631 kernel_wait+0xe9/0x240 kernel/exit.c:1807 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:3254 [inline] process_scheduled_works+0xa10/0x17c0 kernel/workqueue.c:3335 worker_thread+0x86d/0xd70 kernel/workqueue.c:3416 kthread+0x2f0/0x390 kernel/kthread.c:388 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_irq include/linux/rwlock_api_smp.h:169 [inline] _raw_read_lock_irq+0xda/0x120 kernel/locking/spinlock.c:244 send_sigurg+0xee/0x3c0 fs/fcntl.c:851 sk_send_sigurg+0x6e/0xc0 net/core/sock.c:3412 tcp_check_urg+0x207/0x740 net/ipv4/tcp_input.c:5777 tcp_urg+0x15c/0x450 net/ipv4/tcp_input.c:5818 tcp_rcv_established+0xfac/0x2020 net/ipv4/tcp_input.c:6167 tcp_v6_do_rcv+0xa09/0x1300 net/ipv6/tcp_ipv6.c:1644 sk_backlog_rcv include/net/sock.h:1106 [inline] __release_sock+0x1c8/0x350 net/core/sock.c:2984 release_sock+0x61/0x1f0 net/core/sock.c:3550 tcp_sendmsg+0x3a/0x50 net/ipv4/tcp.c:1343 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0xef/0x270 net/socket.c:745 __sys_sendto+0x3a4/0x4f0 net/socket.c:2191 __do_sys_sendto net/socket.c:2203 [inline] __se_sys_sendto net/socket.c:2199 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2199 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f stack backtrace: CPU: 1 PID: 5495 Comm: syz-executor.0 Not tainted 6.9.0-rc4-syzkaller-00214-g13a2e429f644-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 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+0x4dc7/0x58e0 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_irq include/linux/rwlock_api_smp.h:169 [inline] _raw_read_lock_irq+0xda/0x120 kernel/locking/spinlock.c:244 send_sigurg+0xee/0x3c0 fs/fcntl.c:851 sk_send_sigurg+0x6e/0xc0 net/core/sock.c:3412 tcp_check_urg+0x207/0x740 net/ipv4/tcp_input.c:5777 tcp_urg+0x15c/0x450 net/ipv4/tcp_input.c:5818 tcp_rcv_established+0xfac/0x2020 net/ipv4/tcp_input.c:6167 tcp_v6_do_rcv+0xa09/0x1300 net/ipv6/tcp_ipv6.c:1644 sk_backlog_rcv include/net/sock.h:1106 [inline] __release_sock+0x1c8/0x350 net/core/sock.c:2984 release_sock+0x61/0x1f0 net/core/sock.c:3550 tcp_sendmsg+0x3a/0x50 net/ipv4/tcp.c:1343 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0xef/0x270 net/socket.c:745 __sys_sendto+0x3a4/0x4f0 net/socket.c:2191 __do_sys_sendto net/socket.c:2203 [inline] __se_sys_sendto net/socket.c:2199 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2199 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f93be67de69 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:00007f93bf3490c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f93be7abf80 RCX: 00007f93be67de69 RDX: 0000000000000002 RSI: 0000000020000080 RDI: 0000000000000005 RBP: 00007f93be6ca47a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f93be7abf80 R15: 00007ffd71560168 ------------[ cut here ]------------ raw_local_irq_restore() called with IRQs enabled WARNING: CPU: 1 PID: 5495 at kernel/locking/irqflag-debug.c:10 warn_bogus_irq_restore+0x29/0x40 kernel/locking/irqflag-debug.c:10 Modules linked in: CPU: 1 PID: 5495 Comm: syz-executor.0 Not tainted 6.9.0-rc4-syzkaller-00214-g13a2e429f644-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 RIP: 0010:warn_bogus_irq_restore+0x29/0x40 kernel/locking/irqflag-debug.c:10 Code: 90 f3 0f 1e fa 90 80 3d 6f 98 0f 04 00 74 06 90 c3 cc cc cc cc c6 05 60 98 0f 04 01 90 48 c7 c7 a0 b0 ca 8b e8 c8 be d3 f5 90 <0f> 0b 90 90 90 c3 cc cc cc cc 66 2e 0f 1f 84 00 00 00 00 00 0f 1f RSP: 0018:ffffc90004a37798 EFLAGS: 00010246 RAX: 7bd43406166ed700 RBX: 1ffff92000946ef8 RCX: ffff88802ab70000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90004a37828 R08: ffffffff81588072 R09: fffffbfff1c39b48 R10: dffffc0000000000 R11: fffffbfff1c39b48 R12: dffffc0000000000 R13: 1ffff92000946ef4 R14: ffffc90004a377c0 R15: 0000000000000246 FS: 00007f93bf3496c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020b63fe4 CR3: 000000002a1e0000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __raw_read_unlock_irqrestore include/linux/rwlock_api_smp.h:241 [inline] _raw_read_unlock_irqrestore+0x120/0x140 kernel/locking/spinlock.c:268 send_sigurg+0x36a/0x3c0 fs/fcntl.c:858 sk_send_sigurg+0x6e/0xc0 net/core/sock.c:3412 tcp_check_urg+0x207/0x740 net/ipv4/tcp_input.c:5777 tcp_urg+0x15c/0x450 net/ipv4/tcp_input.c:5818 tcp_rcv_established+0xfac/0x2020 net/ipv4/tcp_input.c:6167 tcp_v6_do_rcv+0xa09/0x1300 net/ipv6/tcp_ipv6.c:1644 sk_backlog_rcv include/net/sock.h:1106 [inline] __release_sock+0x1c8/0x350 net/core/sock.c:2984 release_sock+0x61/0x1f0 net/core/sock.c:3550 tcp_sendmsg+0x3a/0x50 net/ipv4/tcp.c:1343 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0xef/0x270 net/socket.c:745 __sys_sendto+0x3a4/0x4f0 net/socket.c:2191 __do_sys_sendto net/socket.c:2203 [inline] __se_sys_sendto net/socket.c:2199 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2199 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f93be67de69 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:00007f93bf3490c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f93be7abf80 RCX: 00007f93be67de69 RDX: 0000000000000002 RSI: 0000000020000080 RDI: 0000000000000005 RBP: 00007f93be6ca47a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f93be7abf80 R15: 00007ffd71560168