======================================================== WARNING: possible irq lock inversion dependency detected 5.5.0-rc2-syzkaller #0 Not tainted -------------------------------------------------------- syz-executor.5/13602 just changed the state of lock: ffff8881d513c018 (&(&dum_hcd->dum->lock)->rlock){+.-.}, at: spin_lock include/linux/spinlock.h:338 [inline] ffff8881d513c018 (&(&dum_hcd->dum->lock)->rlock){+.-.}, at: dummy_timer+0x1245/0x2fdb drivers/usb/gadget/udc/dummy_hcd.c:1967 but this lock was taken by another, HARDIRQ-safe lock in the past: (&(&dev->event_lock)->rlock){-.-.} and interrupts could create inverse lock ordering between them. other info that might help us debug this: Chain exists of: &(&dev->event_lock)->rlock --> &(&iforce->xmit_lock)->rlock --> &(&dum_hcd->dum->lock)->rlock Possible interrupt unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&(&dum_hcd->dum->lock)->rlock); local_irq_disable(); lock(&(&dev->event_lock)->rlock); lock(&(&iforce->xmit_lock)->rlock); lock(&(&dev->event_lock)->rlock); *** DEADLOCK *** 3 locks held by syz-executor.5/13602: #0: ffff8881d2f408e8 (&usblp->mut){+.+.}, at: usblp_rwait_and_lock drivers/usb/class/usblp.c:940 [inline] #0: ffff8881d2f408e8 (&usblp->mut){+.+.}, at: usblp_read+0x201/0x730 drivers/usb/class/usblp.c:825 #1: ffffffff86ef58c0 (console_lock){+.+.}, at: console_trylock_spinning kernel/printk/printk.c:1716 [inline] #1: ffffffff86ef58c0 (console_lock){+.+.}, at: vprintk_emit+0x158/0x3d0 kernel/printk/printk.c:1995 #2: ffff8881db209d70 ((&dum_hcd->timer)){+.-.}, at: lockdep_copy_map include/linux/lockdep.h:172 [inline] #2: ffff8881db209d70 ((&dum_hcd->timer)){+.-.}, at: call_timer_fn+0xcd/0x650 kernel/time/timer.c:1394 the shortest dependencies between 2nd lock and 1st lock: -> (&(&dev->event_lock)->rlock){-.-.} { IN-HARDIRQ-W at: lock_acquire+0x127/0x320 kernel/locking/lockdep.c:4485 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x32/0x50 kernel/locking/spinlock.c:159 input_event drivers/input/input.c:439 [inline] input_event+0x7b/0xb0 drivers/input/input.c:432 input_report_key include/linux/input.h:417 [inline] psmouse_report_standard_buttons+0x2c/0x80 drivers/input/mouse/psmouse-base.c:123 psmouse_report_standard_packet drivers/input/mouse/psmouse-base.c:141 [inline] psmouse_process_byte+0x1e1/0x890 drivers/input/mouse/psmouse-base.c:232 psmouse_handle_byte+0x41/0x1b0 drivers/input/mouse/psmouse-base.c:274 psmouse_interrupt+0x2f7/0xe90 drivers/input/mouse/psmouse-base.c:426 serio_interrupt+0x88/0x150 drivers/input/serio/serio.c:1002 i8042_interrupt+0x266/0x500 drivers/input/serio/i8042.c:596 __handle_irq_event_percpu+0xee/0x7d0 kernel/irq/handle.c:149 handle_irq_event_percpu+0x76/0x160 kernel/irq/handle.c:189 handle_irq_event+0xa2/0x12d kernel/irq/handle.c:206 handle_edge_irq+0x233/0x8a0 kernel/irq/chip.c:830 generic_handle_irq_desc include/linux/irqdesc.h:156 [inline] do_IRQ+0x99/0x210 arch/x86/kernel/irq.c:250 ret_from_intr+0x0/0x31 native_restore_fl arch/x86/include/asm/irqflags.h:41 [inline] arch_local_irq_restore arch/x86/include/asm/irqflags.h:84 [inline] lock_acquire+0x16a/0x320 kernel/locking/lockdep.c:4488 __fs_reclaim_acquire mm/page_alloc.c:4084 [inline] fs_reclaim_acquire.part.0+0x20/0x30 mm/page_alloc.c:4095 slab_pre_alloc_hook mm/slab.h:562 [inline] slab_alloc_node mm/slub.c:2683 [inline] slab_alloc mm/slub.c:2767 [inline] kmem_cache_alloc+0x26/0x2e0 mm/slub.c:2772 kmem_cache_zalloc include/linux/slab.h:660 [inline] __kernfs_new_node+0xd4/0x660 fs/kernfs/dir.c:627 kernfs_new_node+0x93/0x120 fs/kernfs/dir.c:689 __kernfs_create_file+0x51/0x340 fs/kernfs/file.c:1001 sysfs_add_file_mode_ns+0x224/0x520 fs/sysfs/file.c:305 sysfs_create_file_ns+0x131/0x1c0 fs/sysfs/file.c:331 sysfs_create_file include/linux/sysfs.h:530 [inline] driver_create_file+0x48/0x70 drivers/base/driver.c:106 bus_add_driver+0x36f/0x5a0 drivers/base/bus.c:627 driver_register+0x1c4/0x330 drivers/base/driver.c:170 usb_register_driver+0x244/0x460 drivers/usb/core/driver.c:962 do_one_initcall+0xf0/0x620 init/main.c:939 do_initcall_level init/main.c:1007 [inline] do_initcalls init/main.c:1015 [inline] do_basic_setup init/main.c:1032 [inline] kernel_init_freeable+0x4a4/0x548 init/main.c:1216 kernel_init+0xd/0x1b9 init/main.c:1110 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 IN-SOFTIRQ-W at: lock_acquire+0x127/0x320 kernel/locking/lockdep.c:4485 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x32/0x50 kernel/locking/spinlock.c:159 input_event drivers/input/input.c:439 [inline] input_event+0x7b/0xb0 drivers/input/input.c:432 input_sync include/linux/input.h:442 [inline] hidinput_report_event+0xae/0x100 drivers/hid/hid-input.c:1401 hid_report_raw_event+0x755/0xed0 drivers/hid/hid-core.c:1764 hid_input_report+0x315/0x3f0 drivers/hid/hid-core.c:1824 hid_irq_in+0x50e/0x690 drivers/hid/usbhid/hid-core.c:284 __usb_hcd_giveback_urb+0x29a/0x550 drivers/usb/core/hcd.c:1650 usb_hcd_giveback_urb+0x368/0x420 drivers/usb/core/hcd.c:1716 dummy_timer+0x123d/0x2fdb drivers/usb/gadget/udc/dummy_hcd.c:1966 call_timer_fn+0x179/0x650 kernel/time/timer.c:1404 expire_timers kernel/time/timer.c:1449 [inline] __run_timers kernel/time/timer.c:1773 [inline] __run_timers kernel/time/timer.c:1740 [inline] run_timer_softirq+0x5e3/0x1490 kernel/time/timer.c:1786 __do_softirq+0x221/0x912 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x178/0x1a0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x12f/0x500 arch/x86/kernel/apic/apic.c:1137 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829 native_safe_halt arch/x86/include/asm/irqflags.h:60 [inline] arch_safe_halt arch/x86/include/asm/irqflags.h:103 [inline] default_idle+0x28/0x2e0 arch/x86/kernel/process.c:699 cpuidle_idle_call kernel/sched/idle.c:154 [inline] do_idle+0x3c3/0x4e0 kernel/sched/idle.c:269 cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:361 start_kernel+0x8b1/0x8eb init/main.c:785 secondary_startup_64+0xb6/0xc0 arch/x86/kernel/head_64.S:242 INITIAL USE at: lock_acquire+0x127/0x320 kernel/locking/lockdep.c:4485 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x32/0x50 kernel/locking/spinlock.c:159 input_inject_event+0xa6/0x31e drivers/input/input.c:465 __led_set_brightness drivers/leds/led-core.c:46 [inline] led_set_brightness_nopm+0x48/0xf0 drivers/leds/led-core.c:273 led_set_brightness_nosleep drivers/leds/led-core.c:290 [inline] led_set_brightness drivers/leds/led-core.c:265 [inline] led_set_brightness+0x11c/0x240 drivers/leds/led-core.c:241 led_trigger_event drivers/leds/led-triggers.c:373 [inline] led_trigger_event+0x70/0xd0 drivers/leds/led-triggers.c:363 kbd_led_trigger_activate+0xf5/0x130 drivers/tty/vt/keyboard.c:998 led_trigger_set+0x61a/0xbd0 drivers/leds/led-triggers.c:185 led_trigger_set_default drivers/leds/led-triggers.c:248 [inline] led_trigger_set_default+0x135/0x1a0 drivers/leds/led-triggers.c:236 led_classdev_register_ext+0x4e1/0x670 drivers/leds/led-class.c:316 led_classdev_register include/linux/leds.h:181 [inline] input_leds_connect+0x3df/0x6af drivers/input/input-leds.c:139 input_attach_handler+0x194/0x200 drivers/input/input.c:1024 input_register_device.cold+0xf5/0x246 drivers/input/input.c:2224 atkbd_connect+0x63b/0x800 drivers/input/keyboard/atkbd.c:1198 serio_connect_driver+0x46/0x70 drivers/input/serio/serio.c:47 really_probe+0x281/0x6d0 drivers/base/dd.c:548 driver_probe_device+0x104/0x210 drivers/base/dd.c:721 device_driver_attach+0x108/0x140 drivers/base/dd.c:995 __driver_attach+0xda/0x240 drivers/base/dd.c:1072 bus_for_each_dev+0x14b/0x1d0 drivers/base/bus.c:304 serio_attach_driver drivers/input/serio/serio.c:808 [inline] serio_handle_event+0x54a/0x850 drivers/input/serio/serio.c:227 process_one_work+0x92b/0x1530 kernel/workqueue.c:2264 worker_thread+0x96/0xe20 kernel/workqueue.c:2410 kthread+0x318/0x420 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 } ... key at: [] __key.35515+0x0/0x40 ... acquired at: __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x32/0x50 kernel/locking/spinlock.c:159 iforce_send_packet+0x2d/0x2f0 drivers/input/joystick/iforce/iforce-packets.c:39 iforce_control_playback+0xb6/0xe9 drivers/input/joystick/iforce/iforce-packets.c:95 iforce_playback+0x83/0xb0 drivers/input/joystick/iforce/iforce-main.c:75 input_ff_event+0x13a/0x2e0 drivers/input/ff-core.c:286 input_handle_event+0x732/0x13a0 drivers/input/input.c:375 input_inject_event+0x305/0x31e drivers/input/input.c:470 evdev_write+0x2c9/0x410 drivers/input/evdev.c:542 __vfs_write+0x76/0x100 fs/read_write.c:494 vfs_write+0x262/0x5c0 fs/read_write.c:558 ksys_write+0x1e8/0x250 fs/read_write.c:611 do_syscall_64+0xb6/0x5c0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> (&(&iforce->xmit_lock)->rlock){....} { INITIAL USE at: lock_acquire+0x127/0x320 kernel/locking/lockdep.c:4485 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x32/0x50 kernel/locking/spinlock.c:159 iforce_send_packet+0x2d/0x2f0 drivers/input/joystick/iforce/iforce-packets.c:39 iforce_set_autocenter+0x9e/0x100 drivers/input/joystick/iforce/iforce-main.c:95 iforce_init_device+0x7db/0x13d7 drivers/input/joystick/iforce/iforce-main.c:314 iforce_usb_probe+0x8a2/0xc20 drivers/input/joystick/iforce/iforce-usb.c:238 usb_probe_interface+0x305/0x7a0 drivers/usb/core/driver.c:361 really_probe+0x281/0x6d0 drivers/base/dd.c:548 driver_probe_device+0x104/0x210 drivers/base/dd.c:721 __device_attach_driver+0x1c2/0x220 drivers/base/dd.c:828 bus_for_each_drv+0x162/0x1e0 drivers/base/bus.c:430 __device_attach+0x217/0x360 drivers/base/dd.c:894 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:490 device_add+0x1480/0x1c20 drivers/base/core.c:2487 usb_set_configuration+0xe67/0x1740 drivers/usb/core/message.c:2023 generic_probe+0x9d/0xd5 drivers/usb/core/generic.c:210 usb_probe_device+0x99/0x100 drivers/usb/core/driver.c:266 really_probe+0x281/0x6d0 drivers/base/dd.c:548 driver_probe_device+0x104/0x210 drivers/base/dd.c:721 __device_attach_driver+0x1c2/0x220 drivers/base/dd.c:828 bus_for_each_drv+0x162/0x1e0 drivers/base/bus.c:430 __device_attach+0x217/0x360 drivers/base/dd.c:894 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:490 device_add+0x1480/0x1c20 drivers/base/core.c:2487 usb_new_device.cold+0x6a4/0xe79 drivers/usb/core/hub.c:2537 hub_port_connect drivers/usb/core/hub.c:5184 [inline] hub_port_connect_change drivers/usb/core/hub.c:5324 [inline] port_event drivers/usb/core/hub.c:5470 [inline] hub_event+0x1e59/0x3860 drivers/usb/core/hub.c:5552 process_one_work+0x92b/0x1530 kernel/workqueue.c:2264 worker_thread+0x96/0xe20 kernel/workqueue.c:2410 kthread+0x318/0x420 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 } ... key at: [] __key.31336+0x0/0x40 ... acquired at: __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x32/0x50 kernel/locking/spinlock.c:159 dummy_urb_enqueue+0x109/0x890 drivers/usb/gadget/udc/dummy_hcd.c:1257 usb_hcd_submit_urb+0x2aa/0x1ee0 drivers/usb/core/hcd.c:1547 usb_submit_urb+0x6e5/0x13b0 drivers/usb/core/urb.c:570 __iforce_usb_xmit+0x31a/0x490 drivers/input/joystick/iforce/iforce-usb.c:60 iforce_usb_xmit+0x49/0x50 drivers/input/joystick/iforce/iforce-usb.c:75 iforce_send_packet+0x277/0x2f0 drivers/input/joystick/iforce/iforce-packets.c:81 iforce_set_autocenter+0x9e/0x100 drivers/input/joystick/iforce/iforce-main.c:95 iforce_init_device+0x7db/0x13d7 drivers/input/joystick/iforce/iforce-main.c:314 iforce_usb_probe+0x8a2/0xc20 drivers/input/joystick/iforce/iforce-usb.c:238 usb_probe_interface+0x305/0x7a0 drivers/usb/core/driver.c:361 really_probe+0x281/0x6d0 drivers/base/dd.c:548 driver_probe_device+0x104/0x210 drivers/base/dd.c:721 __device_attach_driver+0x1c2/0x220 drivers/base/dd.c:828 bus_for_each_drv+0x162/0x1e0 drivers/base/bus.c:430 __device_attach+0x217/0x360 drivers/base/dd.c:894 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:490 device_add+0x1480/0x1c20 drivers/base/core.c:2487 usb_set_configuration+0xe67/0x1740 drivers/usb/core/message.c:2023 generic_probe+0x9d/0xd5 drivers/usb/core/generic.c:210 usb_probe_device+0x99/0x100 drivers/usb/core/driver.c:266 really_probe+0x281/0x6d0 drivers/base/dd.c:548 driver_probe_device+0x104/0x210 drivers/base/dd.c:721 __device_attach_driver+0x1c2/0x220 drivers/base/dd.c:828 bus_for_each_drv+0x162/0x1e0 drivers/base/bus.c:430 __device_attach+0x217/0x360 drivers/base/dd.c:894 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:490 device_add+0x1480/0x1c20 drivers/base/core.c:2487 usb_new_device.cold+0x6a4/0xe79 drivers/usb/core/hub.c:2537 hub_port_connect drivers/usb/core/hub.c:5184 [inline] hub_port_connect_change drivers/usb/core/hub.c:5324 [inline] port_event drivers/usb/core/hub.c:5470 [inline] hub_event+0x1e59/0x3860 drivers/usb/core/hub.c:5552 process_one_work+0x92b/0x1530 kernel/workqueue.c:2264 worker_thread+0x96/0xe20 kernel/workqueue.c:2410 kthread+0x318/0x420 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 -> (&(&dum_hcd->dum->lock)->rlock){+.-.} { HARDIRQ-ON-W at: lock_acquire+0x127/0x320 kernel/locking/lockdep.c:4485 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x27/0x40 kernel/locking/spinlock.c:151 spin_lock include/linux/spinlock.h:338 [inline] dummy_timer+0x1245/0x2fdb drivers/usb/gadget/udc/dummy_hcd.c:1967 call_timer_fn+0x179/0x650 kernel/time/timer.c:1404 expire_timers kernel/time/timer.c:1449 [inline] __run_timers kernel/time/timer.c:1773 [inline] __run_timers kernel/time/timer.c:1740 [inline] run_timer_softirq+0x5e3/0x1490 kernel/time/timer.c:1786 __do_softirq+0x221/0x912 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x178/0x1a0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x12f/0x500 arch/x86/kernel/apic/apic.c:1137 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829 native_restore_fl arch/x86/include/asm/irqflags.h:41 [inline] arch_local_irq_restore arch/x86/include/asm/irqflags.h:84 [inline] console_unlock+0xa1b/0xc30 kernel/printk/printk.c:2481 vprintk_emit+0x171/0x3d0 kernel/printk/printk.c:1996 vprintk_func+0x75/0x113 kernel/printk/printk_safe.c:386 printk+0xba/0xed kernel/printk/printk.c:2056 usblp_read.cold+0x4e/0x62 drivers/usb/class/usblp.c:830 __vfs_read+0x76/0x100 fs/read_write.c:425 vfs_read+0x1ea/0x430 fs/read_write.c:461 ksys_read+0x127/0x250 fs/read_write.c:587 do_syscall_64+0xb6/0x5c0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe IN-SOFTIRQ-W at: lock_acquire+0x127/0x320 kernel/locking/lockdep.c:4485 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x32/0x50 kernel/locking/spinlock.c:159 dummy_hub_status+0x47/0x330 drivers/usb/gadget/udc/dummy_hcd.c:2000 usb_hcd_poll_rh_status+0x125/0x600 drivers/usb/core/hcd.c:765 call_timer_fn+0x179/0x650 kernel/time/timer.c:1404 expire_timers kernel/time/timer.c:1449 [inline] __run_timers kernel/time/timer.c:1773 [inline] __run_timers kernel/time/timer.c:1740 [inline] run_timer_softirq+0x5e3/0x1490 kernel/time/timer.c:1786 __do_softirq+0x221/0x912 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x178/0x1a0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x12f/0x500 arch/x86/kernel/apic/apic.c:1137 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829 orc_find arch/x86/kernel/unwind_orc.c:164 [inline] unwind_next_frame+0x27f/0x19e0 arch/x86/kernel/unwind_orc.c:404 arch_stack_walk+0x74/0xd0 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x9f/0xe0 kernel/stacktrace.c:123 save_stack+0x1b/0x80 mm/kasan/common.c:72 set_track mm/kasan/common.c:80 [inline] kasan_set_free_info mm/kasan/common.c:335 [inline] __kasan_slab_free+0x129/0x170 mm/kasan/common.c:474 slab_free_hook mm/slub.c:1425 [inline] slab_free_freelist_hook mm/slub.c:1458 [inline] slab_free mm/slub.c:3005 [inline] kfree+0xda/0x310 mm/slub.c:3957 free_modprobe_argv+0x51/0x90 kernel/kmod.c:66 call_usermodehelper_freeinfo kernel/umh.c:47 [inline] call_usermodehelper_exec+0x235/0x4d0 kernel/umh.c:598 call_modprobe kernel/kmod.c:99 [inline] __request_module+0x459/0xb20 kernel/kmod.c:171 xt_request_find_table_lock+0x95/0xd0 net/netfilter/x_tables.c:1257 get_info+0x12f/0x530 net/ipv6/netfilter/ip6_tables.c:981 do_ipt_get_ctl+0x154/0x890 net/ipv4/netfilter/ip_tables.c:1696 nf_sockopt net/netfilter/nf_sockopt.c:104 [inline] nf_getsockopt+0x72/0xd0 net/netfilter/nf_sockopt.c:122 ip_getsockopt net/ipv4/ip_sockglue.c:1576 [inline] ip_getsockopt+0x165/0x1c0 net/ipv4/ip_sockglue.c:1556 tcp_getsockopt net/ipv4/tcp.c:3692 [inline] tcp_getsockopt+0x86/0xd0 net/ipv4/tcp.c:3686 __sys_getsockopt+0x135/0x210 net/socket.c:2162 __do_sys_getsockopt net/socket.c:2177 [inline] __se_sys_getsockopt net/socket.c:2174 [inline] __x64_sys_getsockopt+0xba/0x150 net/socket.c:2174 do_syscall_64+0xb6/0x5c0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe INITIAL USE at: lock_acquire+0x127/0x320 kernel/locking/lockdep.c:4485 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x32/0x50 kernel/locking/spinlock.c:159 dummy_hub_control+0xa3/0x13f0 drivers/usb/gadget/udc/dummy_hcd.c:2088 rh_call_control drivers/usb/core/hcd.c:683 [inline] rh_urb_enqueue drivers/usb/core/hcd.c:842 [inline] usb_hcd_submit_urb+0xe6d/0x1ee0 drivers/usb/core/hcd.c:1543 usb_submit_urb+0x6e5/0x13b0 drivers/usb/core/urb.c:570 usb_start_wait_urb+0x108/0x2b0 drivers/usb/core/message.c:57 usb_internal_control_msg drivers/usb/core/message.c:101 [inline] usb_control_msg+0x31c/0x4a0 drivers/usb/core/message.c:152 get_hub_descriptor drivers/usb/core/hub.c:387 [inline] hub_configure drivers/usb/core/hub.c:1393 [inline] hub_probe.cold+0xbb8/0x2204 drivers/usb/core/hub.c:1865 usb_probe_interface+0x305/0x7a0 drivers/usb/core/driver.c:361 really_probe+0x281/0x6d0 drivers/base/dd.c:548 driver_probe_device+0x104/0x210 drivers/base/dd.c:721 __device_attach_driver+0x1c2/0x220 drivers/base/dd.c:828 bus_for_each_drv+0x162/0x1e0 drivers/base/bus.c:430 __device_attach+0x217/0x360 drivers/base/dd.c:894 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:490 device_add+0x1480/0x1c20 drivers/base/core.c:2487 usb_set_configuration+0xe67/0x1740 drivers/usb/core/message.c:2023 generic_probe+0x9d/0xd5 drivers/usb/core/generic.c:210 usb_probe_device+0x99/0x100 drivers/usb/core/driver.c:266 really_probe+0x281/0x6d0 drivers/base/dd.c:548 driver_probe_device+0x104/0x210 drivers/base/dd.c:721 __device_attach_driver+0x1c2/0x220 drivers/base/dd.c:828 bus_for_each_drv+0x162/0x1e0 drivers/base/bus.c:430 __device_attach+0x217/0x360 drivers/base/dd.c:894 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:490 device_add+0x1480/0x1c20 drivers/base/core.c:2487 usb_new_device.cold+0x6a4/0xe79 drivers/usb/core/hub.c:2537 register_root_hub drivers/usb/core/hcd.c:1009 [inline] usb_add_hcd.cold+0x1103/0x14aa drivers/usb/core/hcd.c:2793 dummy_hcd_probe+0x19f/0x312 drivers/usb/gadget/udc/dummy_hcd.c:2639 platform_drv_probe+0xce/0x1a0 drivers/base/platform.c:725 really_probe+0x281/0x6d0 drivers/base/dd.c:548 driver_probe_device+0x104/0x210 drivers/base/dd.c:721 __device_attach_driver+0x1c2/0x220 drivers/base/dd.c:828 bus_for_each_drv+0x162/0x1e0 drivers/base/bus.c:430 __device_attach+0x217/0x360 drivers/base/dd.c:894 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:490 device_add+0x1480/0x1c20 drivers/base/core.c:2487 platform_device_add+0x34d/0x6c0 drivers/base/platform.c:562 init+0x4b5/0x997 drivers/char/agp/backend.c:340 do_one_initcall+0xf0/0x620 init/main.c:939 do_initcall_level init/main.c:1007 [inline] do_initcalls init/main.c:1015 [inline] do_basic_setup init/main.c:1032 [inline] kernel_init_freeable+0x4a4/0x548 init/main.c:1216 kernel_init+0xd/0x1b9 init/main.c:1110 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 } ... key at: [] __key.37266+0x0/0x40 ... acquired at: mark_lock_irq kernel/locking/lockdep.c:3317 [inline] mark_lock+0x510/0x1160 kernel/locking/lockdep.c:3666 mark_usage kernel/locking/lockdep.c:3580 [inline] __lock_acquire+0x1188/0x3b60 kernel/locking/lockdep.c:3909 lock_acquire+0x127/0x320 kernel/locking/lockdep.c:4485 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x27/0x40 kernel/locking/spinlock.c:151 spin_lock include/linux/spinlock.h:338 [inline] dummy_timer+0x1245/0x2fdb drivers/usb/gadget/udc/dummy_hcd.c:1967 call_timer_fn+0x179/0x650 kernel/time/timer.c:1404 expire_timers kernel/time/timer.c:1449 [inline] __run_timers kernel/time/timer.c:1773 [inline] __run_timers kernel/time/timer.c:1740 [inline] run_timer_softirq+0x5e3/0x1490 kernel/time/timer.c:1786 __do_softirq+0x221/0x912 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x178/0x1a0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x12f/0x500 arch/x86/kernel/apic/apic.c:1137 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829 native_restore_fl arch/x86/include/asm/irqflags.h:41 [inline] arch_local_irq_restore arch/x86/include/asm/irqflags.h:84 [inline] console_unlock+0xa1b/0xc30 kernel/printk/printk.c:2481 vprintk_emit+0x171/0x3d0 kernel/printk/printk.c:1996 vprintk_func+0x75/0x113 kernel/printk/printk_safe.c:386 printk+0xba/0xed kernel/printk/printk.c:2056 usblp_read.cold+0x4e/0x62 drivers/usb/class/usblp.c:830 __vfs_read+0x76/0x100 fs/read_write.c:425 vfs_read+0x1ea/0x430 fs/read_write.c:461 ksys_read+0x127/0x250 fs/read_write.c:587 do_syscall_64+0xb6/0x5c0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe stack backtrace: CPU: 0 PID: 13602 Comm: syz-executor.5 Not tainted 5.5.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0xef/0x16e lib/dump_stack.c:118 print_irq_inversion_bug kernel/locking/lockdep.c:3180 [inline] check_usage_backwards.cold+0x1d/0x26 kernel/locking/lockdep.c:3231 mark_lock_irq kernel/locking/lockdep.c:3317 [inline] mark_lock+0x510/0x1160 kernel/locking/lockdep.c:3666 mark_usage kernel/locking/lockdep.c:3580 [inline] __lock_acquire+0x1188/0x3b60 kernel/locking/lockdep.c:3909 lock_acquire+0x127/0x320 kernel/locking/lockdep.c:4485 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x27/0x40 kernel/locking/spinlock.c:151 spin_lock include/linux/spinlock.h:338 [inline] dummy_timer+0x1245/0x2fdb drivers/usb/gadget/udc/dummy_hcd.c:1967 call_timer_fn+0x179/0x650 kernel/time/timer.c:1404 expire_timers kernel/time/timer.c:1449 [inline] __run_timers kernel/time/timer.c:1773 [inline] __run_timers kernel/time/timer.c:1740 [inline] run_timer_softirq+0x5e3/0x1490 kernel/time/timer.c:1786 __do_softirq+0x221/0x912 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x178/0x1a0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x12f/0x500 arch/x86/kernel/apic/apic.c:1137 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/irqflags.h:85 [inline] RIP: 0010:console_unlock+0xa1b/0xc30 kernel/printk/printk.c:2481 Code: 00 89 ee 48 c7 c7 c0 6a f3 86 e8 30 bb 03 00 65 ff 0d d1 04 d9 7e e9 ea f9 ff ff e8 9f f5 15 00 e8 8a 38 1b 00 ff 74 24 30 9d 18 fe ff ff e8 8b f5 15 00 48 8d 7d 08 48 89 f8 48 c1 e8 03 42 RSP: 0018:ffff8881c8907ae8 EFLAGS: 00000216 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000007 RBX: 0000000000000200 RCX: 0000000000000006 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff8881cde0084c RBP: 0000000000000000 R08: ffff8881cde00000 R09: fffffbfff11f20ad R10: fffffbfff11f20ac R11: ffffffff88f90567 R12: 000000000000003e R13: dffffc0000000000 R14: ffffffff829b1110 R15: ffffffff87283510 vprintk_emit+0x171/0x3d0 kernel/printk/printk.c:1996 vprintk_func+0x75/0x113 kernel/printk/printk_safe.c:386 printk+0xba/0xed kernel/printk/printk.c:2056 usblp_read.cold+0x4e/0x62 drivers/usb/class/usblp.c:830 __vfs_read+0x76/0x100 fs/read_write.c:425 vfs_read+0x1ea/0x430 fs/read_write.c:461 ksys_read+0x127/0x250 fs/read_write.c:587 do_syscall_64+0xb6/0x5c0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45a919 Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f9f26a58c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045a919 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004 RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f9f26a596d4 R13: 00000000004c8e0d R14: 00000000004e05e0 R15: 00000000ffffffff usblp0: nonzero read bulk status received: -71 usblp0: nonzero read bulk status received: -71