do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fb2456b1eda ================================ WARNING: inconsistent lock state 5.19.0-rc7-syzkaller-00199-g8288c99fc263 #0 Not tainted -------------------------------- inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage. syz-executor.3/1317 [HC0[0]:SC1[1]:HE0:SE0] takes: ffffffff87b82b98 ( vmap_area_lock){+.?.}-{2:2} , at: spin_lock include/linux/spinlock.h:349 [inline] , at: find_vmap_area+0x1c/0x130 mm/vmalloc.c:1805 {SOFTIRQ-ON-W} state was registered at: lock_acquire kernel/locking/lockdep.c:5665 [inline] lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5630 __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:349 [inline] alloc_vmap_area+0xa49/0x1f00 mm/vmalloc.c:1586 __get_vm_area_node+0x142/0x3f0 mm/vmalloc.c:2453 get_vm_area_caller+0x43/0x50 mm/vmalloc.c:2506 __ioremap_caller.constprop.0+0x292/0x600 arch/x86/mm/ioremap.c:280 acpi_os_ioremap include/acpi/acpi_io.h:13 [inline] acpi_map drivers/acpi/osl.c:296 [inline] acpi_os_map_iomem+0x463/0x550 drivers/acpi/osl.c:355 acpi_tb_acquire_table+0xd8/0x209 drivers/acpi/acpica/tbdata.c:142 acpi_tb_validate_table drivers/acpi/acpica/tbdata.c:317 [inline] acpi_tb_validate_table+0x50/0x8c drivers/acpi/acpica/tbdata.c:308 acpi_tb_verify_temp_table+0x84/0x674 drivers/acpi/acpica/tbdata.c:504 acpi_reallocate_root_table+0x374/0x3e0 drivers/acpi/acpica/tbxface.c:180 acpi_early_init+0x13a/0x438 drivers/acpi/bus.c:1199 start_kernel+0x3cf/0x48f init/main.c:1098 secondary_startup_64_no_verify+0xce/0xdb irq event stamp: 26133779 hardirqs last enabled at (26133778): [] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:159 [inline] hardirqs last enabled at (26133778): [] _raw_spin_unlock_irq+0x1f/0x40 kernel/locking/spinlock.c:202 hardirqs last disabled at (26133779): [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline] hardirqs last disabled at (26133779): [] _raw_spin_lock_irqsave+0x4e/0x50 kernel/locking/spinlock.c:162 softirqs last enabled at (26130278): [] invoke_softirq kernel/softirq.c:445 [inline] softirqs last enabled at (26130278): [] __irq_exit_rcu+0x113/0x170 kernel/softirq.c:650 softirqs last disabled at (26133767): [] invoke_softirq kernel/softirq.c:445 [inline] softirqs last disabled at (26133767): [] __irq_exit_rcu+0x113/0x170 kernel/softirq.c:650 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(vmap_area_lock ); lock(vmap_area_lock ); *** DEADLOCK *** 5 locks held by syz-executor.3/1317: #0: ffffc90000178d70 ( (&dum_hcd->timer)){+.-.}-{0:0} , at: lockdep_copy_map include/linux/lockdep.h:31 [inline] , at: call_timer_fn+0xd5/0x6b0 kernel/time/timer.c:1464 #1: ffff88811a665230 ( &dev->event_lock ){-.-.}-{2:2}, at: input_event drivers/input/input.c:456 [inline] ){-.-.}-{2:2}, at: input_event+0x7b/0xb0 drivers/input/input.c:449 #2: ffffffff87a95140 (rcu_read_lock ){....}-{1:2}, at: input_pass_values.part.0+0x0/0x710 drivers/input/input.c:884 #3: ffffffff87eb2cd8 (kbd_event_lock){..-.}-{2:2}, at: spin_lock include/linux/spinlock.h:349 [inline] ffffffff87eb2cd8 (kbd_event_lock){..-.}-{2:2}, at: kbd_event+0x86/0x1780 drivers/tty/vt/keyboard.c:1537 #4: ffffffff87a95140 (rcu_read_lock ){....}-{1:2}, at: show_state_filter+0x0/0x300 kernel/sched/core.c:8763 stack backtrace: CPU: 1 PID: 1317 Comm: syz-executor.3 Not tainted 5.19.0-rc7-syzkaller-00199-g8288c99fc263 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 print_usage_bug kernel/locking/lockdep.c:3961 [inline] valid_state kernel/locking/lockdep.c:3973 [inline] mark_lock_irq kernel/locking/lockdep.c:4176 [inline] mark_lock.part.0.cold+0x18/0xd8 kernel/locking/lockdep.c:4632 mark_lock kernel/locking/lockdep.c:4596 [inline] mark_usage kernel/locking/lockdep.c:4527 [inline] __lock_acquire+0x11e7/0x5660 kernel/locking/lockdep.c:5007 lock_acquire kernel/locking/lockdep.c:5665 [inline] lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5630 __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:349 [inline] find_vmap_area+0x1c/0x130 mm/vmalloc.c:1805 check_heap_object mm/usercopy.c:176 [inline] __check_object_size mm/usercopy.c:250 [inline] __check_object_size+0x1f8/0x700 mm/usercopy.c:212 check_object_size include/linux/thread_info.h:199 [inline] __copy_from_user_inatomic include/linux/uaccess.h:62 [inline] copy_from_user_nmi arch/x86/lib/usercopy.c:47 [inline] copy_from_user_nmi+0xcb/0x130 arch/x86/lib/usercopy.c:31 copy_code arch/x86/kernel/dumpstack.c:91 [inline] show_opcodes+0x59/0xb0 arch/x86/kernel/dumpstack.c:121 show_iret_regs+0xd/0x33 arch/x86/kernel/dumpstack.c:149 __show_regs+0x1e/0x60 arch/x86/kernel/process_64.c:74 show_trace_log_lvl+0x25b/0x2ba arch/x86/kernel/dumpstack.c:292 sched_show_task kernel/sched/core.c:8801 [inline] sched_show_task+0x44c/0x5c0 kernel/sched/core.c:8775 show_state_filter+0x13e/0x300 kernel/sched/core.c:8846 k_spec drivers/tty/vt/keyboard.c:667 [inline] k_spec+0xe1/0x130 drivers/tty/vt/keyboard.c:656 kbd_keycode drivers/tty/vt/keyboard.c:1524 [inline] kbd_event+0xcdd/0x1780 drivers/tty/vt/keyboard.c:1543 input_to_handler+0x3b9/0x4c0 drivers/input/input.c:129 input_pass_values.part.0+0x230/0x710 drivers/input/input.c:156 input_pass_values drivers/input/input.c:145 [inline] input_handle_event+0x373/0x1440 drivers/input/input.c:415 input_event drivers/input/input.c:457 [inline] input_event+0x8e/0xb0 drivers/input/input.c:449 input_sync include/linux/input.h:450 [inline] hidinput_report_event+0xae/0x100 drivers/hid/hid-input.c:1648 hid_report_raw_event+0x3e6/0x1280 drivers/hid/hid-core.c:2005 hid_input_report+0x360/0x4c0 drivers/hid/hid-core.c:2065 hid_irq_in+0x50e/0x690 drivers/hid/usbhid/hid-core.c:284 __usb_hcd_giveback_urb+0x2b0/0x5c0 drivers/usb/core/hcd.c:1670 usb_hcd_giveback_urb+0x380/0x430 drivers/usb/core/hcd.c:1753 dummy_timer+0x11f9/0x32b0 drivers/usb/gadget/udc/dummy_hcd.c:1988 call_timer_fn+0x1a5/0x6b0 kernel/time/timer.c:1474 expire_timers kernel/time/timer.c:1519 [inline] __run_timers.part.0+0x679/0xa80 kernel/time/timer.c:1790 __run_timers kernel/time/timer.c:1768 [inline] run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1803 __do_softirq+0x288/0x9a5 kernel/softirq.c:571 invoke_softirq kernel/softirq.c:445 [inline] __irq_exit_rcu+0x113/0x170 kernel/softirq.c:650 irq_exit_rcu+0x5/0x20 kernel/softirq.c:662 sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:649 RIP: 0010:finish_task_switch.isra.0+0x24d/0xa10 kernel/sched/core.c:5026 Code: 8b 3a 4c 89 e7 48 c7 02 00 00 00 00 ff d1 4d 85 ff 75 bf 4c 89 e7 e8 62 3c d0 04 e8 2d 73 2b 00 fb 65 48 8b 1c 25 c0 6e 02 00 <48> 8d bb 98 14 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 RSP: 0018:ffffc900013afb30 EFLAGS: 00000206 RAX: 00000000018ec505 RBX: ffff88810e2d9c80 RCX: 1ffffffff11ba311 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc900013afb78 R08: 0000000000000001 R09: 0000000000000001 R10: ffffed103ed26f68 R11: 0000000000000001 R12: ffff8881f6937b40 R13: ffff888110351c80 R14: 0000000000000000 R15: 0000000000000002 context_switch kernel/sched/core.c:5149 [inline] __schedule+0x947/0x2630 kernel/sched/core.c:6458 schedule+0xd2/0x1f0 kernel/sched/core.c:6530 freezable_schedule include/linux/freezer.h:172 [inline] do_nanosleep+0x24e/0x690 kernel/time/hrtimer.c:2044 hrtimer_nanosleep+0x1f9/0x4a0 kernel/time/hrtimer.c:2097 common_nsleep+0xa2/0xc0 kernel/time/posix-timers.c:1236 __do_sys_clock_nanosleep kernel/time/posix-timers.c:1276 [inline] __se_sys_clock_nanosleep kernel/time/posix-timers.c:1254 [inline] __x64_sys_clock_nanosleep+0x2f4/0x430 kernel/time/posix-timers.c:1254 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fb2456b1eda Code: 83 ff 03 74 3b 48 83 ec 28 b8 fa ff ff ff 83 ff 02 49 89 ca 0f 44 f8 64 8b 04 25 18 00 00 00 85 c0 75 2d b8 e6 00 00 00 0f 05 <89> c2 f7 da 3d 00 f0 ff ff b8 00 00 00 00 0f 47 c2 48 83 c4 28 c3 RSP: 002b:00007fff055617c0 EFLAGS: 00000246 ORIG_RAX: 00000000000000e6 RAX: ffffffffffffffda RBX: 0000000000000bba RCX: 00007fb2456b1eda RDX: 00007fff05561800 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007fff0556188c R08: 00000000000007a8 R09: 00007fff0557a080 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000032 R13: 00000000001ddf44 R14: 0000000000000000 R15: 00007fff055618f0 Code: 83 ff 03 74 3b 48 83 ec 28 b8 fa ff ff ff 83 ff 02 49 89 ca 0f 44 f8 64 8b 04 25 18 00 00 00 85 c0 75 2d b8 e6 00 00 00 0f 05 <89> c2 f7 da 3d 00 f0 ff ff b8 00 00 00 00 0f 47 c2 48 83 c4 28 c3 RSP: 002b:00007fff055617c0 EFLAGS: 00000246 ORIG_RAX: 00000000000000e6 RAX: ffffffffffffffda RBX: 0000000000000bba RCX: 00007fb2456b1eda RDX: 00007fff05561800 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007fff0556188c R08: 00000000000007a8 R09: 00007fff0557a080 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000032 R13: 00000000001ddf44 R14: 0000000000000000 R15: 00007fff055618f0 task:kworker/u4:6 state:I stack:25912 pid: 1321 ppid: 2 flags:0x00004000 Workqueue: 0x0 (events_unbound) Call Trace: context_switch kernel/sched/core.c:5146 [inline] __schedule+0x93f/0x2630 kernel/sched/core.c:6458 schedule+0xd2/0x1f0 kernel/sched/core.c:6530 worker_thread+0x15c/0x1080 kernel/workqueue.c:2457 kthread+0x2ef/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:kworker/1:5 state:D stack:22120 pid: 4116 ppid: 2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:5146 [inline] __schedule+0x93f/0x2630 kernel/sched/core.c:6458 schedule+0xd2/0x1f0 kernel/sched/core.c:6530 schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1935 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common+0x378/0x530 kernel/sched/completion.c:106 usb_start_wait_urb+0x144/0x4c0 drivers/usb/core/message.c:63 usb_internal_control_msg drivers/usb/core/message.c:102 [inline] usb_control_msg+0x31c/0x4a0 drivers/usb/core/message.c:153 hub_port_init+0xf9d/0x35c0 drivers/usb/core/hub.c:4825 hub_port_connect drivers/usb/core/hub.c:5282 [inline] hub_port_connect_change drivers/usb/core/hub.c:5497 [inline] port_event drivers/usb/core/hub.c:5653 [inline] hub_event+0x23da/0x4690 drivers/usb/core/hub.c:5735 process_one_work+0x996/0x1610 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2ef/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:kworker/0:3 state:R running task stack:21584 pid: 4119 ppid: 2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:5146 [inline] __schedule+0x93f/0x2630 kernel/sched/core.c:6458 schedule+0xd2/0x1f0 kernel/sched/core.c:6530 schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1935 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common+0x378/0x530 kernel/sched/completion.c:106 task:kworker/1:6 state:I stack:21552 pid: 4122 ppid: 2 flags:0x00004000 Workqueue: 0x0 (events) Call Trace: context_switch kernel/sched/core.c:5146 [inline] __schedule+0x93f/0x2630 kernel/sched/core.c:6458 schedule+0xd2/0x1f0 kernel/sched/core.c:6530 worker_thread+0x15c/0x1080 kernel/workqueue.c:2457 kthread+0x2ef/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:kworker/0:4 state:I stack:18888 pid: 4142 ppid: 2 flags:0x00004000 Workqueue: 0x0 (events) Call Trace: context_switch kernel/sched/core.c:5146 [inline] __schedule+0x93f/0x2630 kernel/sched/core.c:6458 schedule+0xd2/0x1f0 kernel/sched/core.c:6530 worker_thread+0x15c/0x1080 kernel/workqueue.c:2457 kthread+0x2ef/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:kworker/0:6 state:I stack:22104 pid: 4361 ppid: 2 flags:0x00004000 Workqueue: 0x0 (usb_hub_wq) Call Trace: context_switch kernel/sched/core.c:5146 [inline] __schedule+0x93f/0x2630 kernel/sched/core.c:6458 schedule+0xd2/0x1f0 kernel/sched/core.c:6530 worker_thread+0x15c/0x1080 kernel/workqueue.c:2457 kthread+0x2ef/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:kworker/u4:1 state:I stack:27232 pid: 7244 ppid: 2 flags:0x00004000 Workqueue: 0x0 (events_unbound) Call Trace: context_switch kernel/sched/core.c:5146 [inline] __schedule+0x93f/0x2630 kernel/sched/core.c:6458 schedule+0xd2/0x1f0 kernel/sched/core.c:6530 worker_thread+0x15c/0x1080 kernel/workqueue.c:2457 kthread+0x2ef/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:kworker/1:4 state:D stack:22568 pid: 7293 ppid: 2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:5146 [inline] __schedule+0x93f/0x2630 kernel/sched/core.c:6458 schedule+0xd2/0x1f0 kernel/sched/core.c:6530 schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1935 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common+0x378/0x530 kernel/sched/completion.c:106 usb_start_wait_urb+0x144/0x4c0 drivers/usb/core/message.c:63 usb_internal_control_msg drivers/usb/core/message.c:102 [inline] usb_control_msg+0x31c/0x4a0 drivers/usb/core/message.c:153 usb_get_string+0xbe/0x1b0 drivers/usb/core/message.c:843 usb_string_sub+0xfa/0x3d0 drivers/usb/core/message.c:882 usb_string+0x300/0x530 drivers/usb/core/message.c:987 usb_cache_string+0x82/0x140 drivers/usb/core/message.c:1029 usb_set_configuration+0x13f9/0x1900 drivers/usb/core/message.c:2142 usb_generic_driver_probe+0xba/0x100 drivers/usb/core/generic.c:238 usb_probe_device+0xd9/0x2c0 drivers/usb/core/driver.c:293 call_driver_probe drivers/base/dd.c:555 [inline] really_probe+0x23e/0xb90 drivers/base/dd.c:634 __driver_probe_device+0x338/0x4d0 drivers/base/dd.c:764 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:794 __device_attach_driver+0x20b/0x2f0 drivers/base/dd.c:917 bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:427 __device_attach+0x1e4/0x530 drivers/base/dd.c:989 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:487 device_add+0xbda/0x1ea0 drivers/base/core.c:3428 usb_new_device.cold+0x641/0x1091 drivers/usb/core/hub.c:2573 hub_port_connect drivers/usb/core/hub.c:5353 [inline] hub_port_connect_change drivers/usb/core/hub.c:5497 [inline] port_event drivers/usb/core/hub.c:5653 [inline] hub_event+0x25d5/0x4690 drivers/usb/core/hub.c:5735 process_one_work+0x996/0x1610 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2ef/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:kworker/1:8 state:R running task stack:23016 pid: 8042 ppid: 2 flags:0x00004000 Workqueue: rcu_gp wait_rcu_exp_gp Call Trace: context_switch kernel/sched/core.c:5146 [inline] __schedule+0x93f/0x2630 kernel/sched/core.c:6458 schedule+0xd2/0x1f0 kernel/sched/core.c:6530 schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1935 synchronize_rcu_expedited_wait_once kernel/rcu/tree_exp.h:569 [inline] synchronize_rcu_expedited_wait kernel/rcu/tree_exp.h:620 [inline] rcu_exp_wait_wake+0x280/0xd70 kernel/rcu/tree_exp.h:685 process_one_work+0x996/0x1610 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2ef/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:kworker/u4:2 state:I stack:27128 pid:12331 ppid: 2 flags:0x00004000 Workqueue: 0x0 (events_unbound) Call Trace: context_switch kernel/sched/core.c:5146 [inline] __schedule+0x93f/0x2630 kernel/sched/core.c:6458 schedule+0xd2/0x1f0 kernel/sched/core.c:6530 worker_thread+0x15c/0x1080 kernel/workqueue.c:2457 kthread+0x2ef/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:kworker/0:0 state:I stack:22840 pid:14780 ppid: 2 flags:0x00004000 Workqueue: 0x0 (events) Call Trace: context_switch kernel/sched/core.c:5146 [inline] __schedule+0x93f/0x2630 kernel/sched/core.c:6458 schedule+0xd2/0x1f0 kernel/sched/core.c:6530 worker_thread+0x15c/0x1080 kernel/workqueue.c:2457 kthread+0x2ef/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:kworker/u4:3 state:I stack:27208 pid:16947 ppid: 2 flags:0x00004000 Workqueue: 0x0 (events_unbound) Call Trace: context_switch kernel/sched/core.c:5146 [inline] __schedule+0x93f/0x2630 kernel/sched/core.c:6458 schedule+0xd2/0x1f0 kernel/sched/core.c:6530 worker_thread+0x15c/0x1080 kernel/workqueue.c:2457 kthread+0x2ef/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:kworker/1:3 state:D stack:22496 pid:18633 ppid: 2 flags:0x00004000 Workqueue: events console_callback Call Trace: context_switch kernel/sched/core.c:5146 [inline] __schedule+0x93f/0x2630 kernel/sched/core.c:6458 schedule+0xd2/0x1f0 kernel/sched/core.c:6530 schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1911 ___down_common kernel/locking/semaphore.c:225 [inline] __down_common+0x363/0x770 kernel/locking/semaphore.c:246 down+0x70/0x90 kernel/locking/semaphore.c:63 console_lock+0x28/0x80 kernel/printk/printk.c:2568 console_callback+0x5f/0x4c0 drivers/tty/vt/vt.c:2980 process_one_work+0x996/0x1610 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2ef/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:kworker/0:2 state:R running task stack:23264 pid:18684 ppid: 2 flags:0x00004000 Workqueue: events legacy_dvb_usb_read_remote_control Call Trace: context_switch kernel/sched/core.c:5146 [inline] __schedule+0x93f/0x2630 kernel/sched/core.c:6458 task:kworker/u4:0 state:I stack:27232 pid:22275 ppid: 2 flags:0x00004000 Workqueue: 0x0 (events_unbound) Call Trace: context_switch kernel/sched/core.c:5146 [inline] __schedule+0x93f/0x2630 kernel/sched/core.c:6458 schedule+0xd2/0x1f0 kernel/sched/core.c:6530 worker_thread+0x15c/0x1080 kernel/workqueue.c:2457 kthread+0x2ef/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:udevd state:S stack:27992 pid:23288 ppid: 1180 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:5146 [inline] __schedule+0x93f/0x2630 kernel/sched/core.c:6458 schedule+0xd2/0x1f0 kernel/sched/core.c:6530 schedule_hrtimeout_range_clock+0x343/0x390 kernel/time/hrtimer.c:2296 ep_poll fs/eventpoll.c:1856 [inline] do_epoll_wait+0x1290/0x1930 fs/eventpoll.c:2234 __do_sys_epoll_wait fs/eventpoll.c:2246 [inline] __se_sys_epoll_wait fs/eventpoll.c:2241 [inline] __x64_sys_epoll_wait+0x158/0x270 fs/eventpoll.c:2241 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fbd5b6d7e46 RSP: 002b:00007ffdd59aed18 EFLAGS: 00000246 ORIG_RAX: 00000000000000e8 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fbd5b6d7e46 RDX: 0000000000000004 RSI: 00007ffdd59aed58 RDI: 0000000000000004 RBP: 0000561b96998e50 R08: 0000000000000007 R09: 0000561b96992280 R10: 00000000ffffffff R11: 0000000000000246 R12: 0000561b96999680 R13: 00007ffdd59aed58 R14: 00000000ffffffff R15: 0000561b9696e910 task:udevd state:S stack:27112 pid:23291 ppid: 1180 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:5146 [inline] __schedule+0x93f/0x2630 kernel/sched/core.c:6458 schedule+0xd2/0x1f0 kernel/sched/core.c:6530 schedule_hrtimeout_range_clock+0x343/0x390 kernel/time/hrtimer.c:2296 ep_poll fs/eventpoll.c:1856 [inline] do_epoll_wait+0x1290/0x1930 fs/eventpoll.c:2234 __do_sys_epoll_wait fs/eventpoll.c:2246 [inline] __se_sys_epoll_wait fs/eventpoll.c:2241 [inline] __x64_sys_epoll_wait+0x158/0x270 fs/eventpoll.c:2241 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fbd5b6d7e46 RSP: 002b:00007ffdd59aed18 EFLAGS: 00000246 ORIG_RAX: 00000000000000e8 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fbd5b6d7e46 RDX: 0000000000000004 RSI: 00007ffdd59aed58 RDI: 0000000000000004 RBP: 0000561b96994dc0 R08: 0000000000000007 R09: 0000561b96992280 R10: 00000000ffffffff R11: 0000000000000246 R12: 0000561b9698fb50 R13: 00007ffdd59aed58 R14: 00000000ffffffff R15: 0000561b9696e910 task:udevd state:S stack:28280 pid:23293 ppid: 1180 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:5146 [inline] __schedule+0x93f/0x2630 kernel/sched/core.c:6458 schedule+0xd2/0x1f0 kernel/sched/core.c:6530 schedule_hrtimeout_range_clock+0x343/0x390 kernel/time/hrtimer.c:2296 ep_poll fs/eventpoll.c:1856 [inline] do_epoll_wait+0x1290/0x1930 fs/eventpoll.c:2234 __do_sys_epoll_wait fs/eventpoll.c:2246 [inline] __se_sys_epoll_wait fs/eventpoll.c:2241 [inline] __x64_sys_epoll_wait+0x158/0x270 fs/eventpoll.c:2241 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fbd5b6d7e46 RSP: 002b:00007ffdd59aed18 EFLAGS: 00000246 ORIG_RAX: 00000000000000e8 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fbd5b6d7e46 RDX: 0000000000000004 RSI: 00007ffdd59aed58 RDI: 0000000000000004 RBP: 0000561b9699a900 R08: 0000000000000007 R09: 0000561b96988720 R10: 00000000ffffffff R11: 0000000000000246 R12: 0000561b969a1ed0 R13: 00007ffdd59aed58 R14: 00000000ffffffff R15: 0000561b9696e910 task:udevd state:D stack:27952 pid:23295 ppid: 1180 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5146 [inline] __schedule+0x93f/0x2630 kernel/sched/core.c:6458 schedule+0xd2/0x1f0 kernel/sched/core.c:6530 synchronize_rcu_expedited+0x46f/0x610 kernel/rcu/tree_exp.h:942 synchronize_rcu+0x130/0x190 kernel/rcu/tree.c:3843 evdev_detach_client drivers/input/evdev.c:386 [inline] evdev_release+0x23f/0x410 drivers/input/evdev.c:449 __fput+0x277/0x9d0 fs/file_table.c:317 task_work_run+0xdd/0x1a0 kernel/task_work.c:177 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop kernel/entry/common.c:169 [inline] exit_to_user_mode_prepare+0x1f7/0x200 kernel/entry/common.c:201 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:294 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fbd5b6c9fc3 RSP: 002b:00007ffdd59a99b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 00007fbd5b5726a8 RCX: 00007fbd5b6c9fc3 RDX: 00007ffdd59a9a20 RSI: 0000000080184540 RDI: 0000000000000008 RBP: 0000561b9697fe80 R08: 0000561b96984ba0 R09: 00007fbd5b799a60 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000016 R13: 00007ffdd59a9a70 R14: 0000000000000004 R15: ffffffffffffffff task:udevd state:S stack:27992 pid:23335 ppid: 1180 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:5146 [inline] __schedule+0x93f/0x2630 kernel/sched/core.c:6458 schedule+0xd2/0x1f0 kernel/sched/core.c:6530 schedule_hrtimeout_range_clock+0x343/0x390 kernel/time/hrtimer.c:2296 ep_poll fs/eventpoll.c:1856 [inline] do_epoll_wait+0x1290/0x1930 fs/eventpoll.c:2234 __do_sys_epoll_wait fs/eventpoll.c:2246 [inline] __se_sys_epoll_wait fs/eventpoll.c:2241 [inline] __x64_sys_epoll_wait+0x158/0x270 fs/eventpoll.c:2241 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fbd5b6d7e46 RSP: 002b:00007ffdd59aed18 EFLAGS: 00000246 ORIG_RAX: 00000000000000e8 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fbd5b6d7e46 RDX: 0000000000000004 RSI: 00007ffdd59aed58 RDI: 0000000000000004 RBP: 0000561b96998e50 R08: 0000000000000007 R09: 0000561b96992280 R10: 00000000ffffffff R11: 0000000000000246 R12: 0000561b969900d0 R13: 00007ffdd59aed58 R14: 00000000ffffffff R15: 0000561b9696e910 task:udevd state:S stack:28512 pid:23634 ppid: 1180 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:5146 [inline] __schedule+0x93f/0x2630 kernel/sched/core.c:6458 schedule+0xd2/0x1f0 kernel/sched/core.c:6530 schedule_hrtimeout_range_clock+0x343/0x390 kernel/time/hrtimer.c:2296 ep_poll fs/eventpoll.c:1856 [inline] do_epoll_wait+0x1290/0x1930 fs/eventpoll.c:2234 __do_sys_epoll_wait fs/eventpoll.c:2246 [inline] __se_sys_epoll_wait fs/eventpoll.c:2241 [inline] __x64_sys_epoll_wait+0x158/0x270 fs/eventpoll.c:2241 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fbd5b6d7e46 RSP: 002b:00007ffdd59aed18 EFLAGS: 00000246 ORIG_RAX: 00000000000000e8 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fbd5b6d7e46 RDX: 0000000000000004 RSI: 00007ffdd59aed58 RDI: 0000000000000004 RBP: 0000561b9699a900 R08: 0000000000000007 R09: 0000561b96988720 R10: 00000000ffffffff R11: 0000000000000246 R12: 0000561b96994440 R13: 00007ffdd59aed58 R14: 00000000ffffffff R15: 0000561b9696e910 task:udevd state:S stack:27848 pid:23635 ppid: 1180 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:5146 [inline] __schedule+0x93f/0x2630 kernel/sched/core.c:6458 schedule+0xd2/0x1f0 kernel/sched/core.c:6530 schedule_hrtimeout_range_clock+0x343/0x390 kernel/time/hrtimer.c:2296 ep_poll fs/eventpoll.c:1856 [inline] do_epoll_wait+0x1290/0x1930 fs/eventpoll.c:2234 __do_sys_epoll_wait fs/eventpoll.c:2246 [inline] __se_sys_epoll_wait fs/eventpoll.c:2241 [inline] __x64_sys_epoll_wait+0x158/0x270 fs/eventpoll.c:2241 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fbd5b6d7e46 RSP: 002b:00007ffdd59aed18 EFLAGS: 00000246 ORIG_RAX: 00000000000000e8 ---------------- Code disassembly (best guess): 0: 8b 3a mov (%rdx),%edi 2: 4c 89 e7 mov %r12,%rdi 5: 48 c7 02 00 00 00 00 movq $0x0,(%rdx) c: ff d1 callq *%rcx e: 4d 85 ff test %r15,%r15 11: 75 bf jne 0xffffffd2 13: 4c 89 e7 mov %r12,%rdi 16: e8 62 3c d0 04 callq 0x4d03c7d 1b: e8 2d 73 2b 00 callq 0x2b734d 20: fb sti 21: 65 48 8b 1c 25 c0 6e mov %gs:0x26ec0,%rbx 28: 02 00 * 2a: 48 8d bb 98 14 00 00 lea 0x1498(%rbx),%rdi <-- trapping instruction 31: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 38: fc ff df 3b: 48 89 fa mov %rdi,%rdx 3e: 48 rex.W 3f: c1 .byte 0xc1