__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: 0033:0x7f95a85f827a ================================ WARNING: inconsistent lock state 6.0.0-rc7-syzkaller #0 Not tainted -------------------------------- inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage. syz-executor.1/1303 [HC0[0]:SC1[1]:HE0:SE0] takes: ffffffff87b85858 (vmap_area_lock){+.?.}-{2:2}, at: spin_lock include/linux/spinlock.h:349 [inline] ffffffff87b85858 (vmap_area_lock){+.?.}-{2:2}, at: find_vmap_area+0x1c/0x130 mm/vmalloc.c:1836 {SOFTIRQ-ON-W} state was registered at: lock_acquire kernel/locking/lockdep.c:5666 [inline] lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5631 __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+0xa0b/0x1d50 mm/vmalloc.c:1617 __get_vm_area_node+0x142/0x3f0 mm/vmalloc.c:2484 get_vm_area_caller+0x43/0x50 mm/vmalloc.c:2537 __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:1214 start_kernel+0x3cf/0x48f init/main.c:1099 secondary_startup_64_no_verify+0xce/0xdb irq event stamp: 39144101 hardirqs last enabled at (39144100): [] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:159 [inline] hardirqs last enabled at (39144100): [] _raw_spin_unlock_irq+0x1f/0x40 kernel/locking/spinlock.c:202 hardirqs last disabled at (39144101): [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline] hardirqs last disabled at (39144101): [] _raw_spin_lock_irqsave+0x4e/0x50 kernel/locking/spinlock.c:162 softirqs last enabled at (39141532): [] invoke_softirq kernel/softirq.c:445 [inline] softirqs last enabled at (39141532): [] __irq_exit_rcu+0x113/0x170 kernel/softirq.c:650 softirqs last disabled at (39144091): [] invoke_softirq kernel/softirq.c:445 [inline] softirqs last disabled at (39144091): [] __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.1/1303: #0: ffffc90000007d70 ((&dum_hcd->timer)){+.-.}-{0:0}, at: lockdep_copy_map include/linux/lockdep.h:31 [inline] #0: ffffc90000007d70 ((&dum_hcd->timer)){+.-.}-{0:0}, at: call_timer_fn+0xd5/0x6b0 kernel/time/timer.c:1464 #1: ffff888109bfd230 (&dev->event_lock){-.-.}-{2:2}, at: input_event drivers/input/input.c:430 [inline] #1: ffff888109bfd230 (&dev->event_lock){-.-.}-{2:2}, at: input_event+0x6c/0xa0 drivers/input/input.c:423 #2: ffffffff87a950a0 (rcu_read_lock){....}-{1:2}, at: input_pass_values.part.0+0x0/0x710 drivers/input/input.c:858 #3: ffffffff87eb99d8 (kbd_event_lock){..-.}-{2:2}, at: spin_lock include/linux/spinlock.h:349 [inline] #3: ffffffff87eb99d8 (kbd_event_lock){..-.}-{2:2}, at: kbd_event+0x86/0x1790 drivers/tty/vt/keyboard.c:1537 #4: ffffffff87a950a0 (rcu_read_lock){....}-{1:2}, at: show_state_filter+0x0/0x300 kernel/sched/core.c:8832 stack backtrace: CPU: 0 PID: 1303 Comm: syz-executor.1 Not tainted 6.0.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 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+0x11d9/0x56d0 kernel/locking/lockdep.c:5007 lock_acquire kernel/locking/lockdep.c:5666 [inline] lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5631 __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:1836 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:8870 [inline] sched_show_task+0x44c/0x5c0 kernel/sched/core.c:8844 show_state_filter+0x13e/0x300 kernel/sched/core.c:8915 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/0x1790 drivers/tty/vt/keyboard.c:1543 input_to_handler+0x3b9/0x4c0 drivers/input/input.c:130 input_pass_values.part.0+0x230/0x710 drivers/input/input.c:159 input_pass_values drivers/input/input.c:146 [inline] input_event_dispose+0x5cf/0x730 drivers/input/input.c:374 input_handle_event+0x112/0xda0 drivers/input/input.c:402 input_event drivers/input/input.c:431 [inline] input_event+0x7f/0xa0 drivers/input/input.c:423 input_sync include/linux/input.h:450 [inline] hidinput_report_event+0xae/0x100 drivers/hid/hid-input.c:1655 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:1671 usb_hcd_giveback_urb+0x380/0x430 drivers/usb/core/hcd.c:1754 dummy_timer+0x11ff/0x32c0 drivers/usb/gadget/udc/dummy_hcd.c:1988 call_timer_fn+0x1a0/0x6b0 kernel/time/timer.c:1474 expire_timers kernel/time/timer.c:1519 [inline] __run_timers.part.0+0x674/0xa80 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+0x1c0/0x9a9 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:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0x38/0x70 kernel/locking/spinlock.c:194 Code: 74 24 10 e8 1a f0 33 fb 48 89 ef e8 a2 71 34 fb 81 e3 00 02 00 00 75 25 9c 58 f6 c4 02 75 2d 48 85 db 74 01 fb bf 01 00 00 00 83 ce 29 fb 65 8b 05 fc 3f 0c 7a 85 c0 74 0a 5b 5d c3 e8 30 4a RSP: 0018:ffffc90001117c78 EFLAGS: 00000206 RAX: 0000000000000006 RBX: 0000000000000200 RCX: 1ffffffff11bd539 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001 RBP: ffff8881f682a200 R08: 0000000000000001 R09: 0000000000000001 R10: ffffed103ed05440 R11: 0000000000000000 R12: dffffc0000000000 R13: 0000000000000001 R14: ffffc90001117dd8 R15: ffff888114943900 hrtimer_start_expires include/linux/hrtimer.h:432 [inline] hrtimer_sleeper_start_expires kernel/time/hrtimer.c:1965 [inline] do_nanosleep+0x131/0x690 kernel/time/hrtimer.c:2041 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: 0033:0x7f95a85f827a 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:00007ffe87851e80 EFLAGS: 00000246 ORIG_RAX: 00000000000000e6 RAX: ffffffffffffffda RBX: 0000000000000dca RCX: 00007f95a85f827a RDX: 00007ffe87851ec0 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007ffe87851f4c R08: 00000000000008f3 R09: 00007ffe87863080 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000032 R13: 000000000022f503 R14: 0000000000000002 R15: 00007ffe87851fb0 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:00007ffe87851e80 EFLAGS: 00000246 ORIG_RAX: 00000000000000e6 RAX: ffffffffffffffda RBX: 0000000000000dca RCX: 00007f95a85f827a RDX: 00007ffe87851ec0 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007ffe87851f4c R08: 00000000000008f3 R09: 00007ffe87863080 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000032 R13: 000000000022f503 R14: 0000000000000002 R15: 00007ffe87851fb0 task:syz-executor.3 state:S stack:25696 pid: 1304 ppid: 1298 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:5182 [inline] __schedule+0x93f/0x26f0 kernel/sched/core.c:6494 schedule+0xda/0x1b0 kernel/sched/core.c:6570 pipe_read+0xa08/0xf90 fs/pipe.c:378 call_read_iter include/linux/fs.h:2181 [inline] new_sync_read fs/read_write.c:389 [inline] vfs_read+0x7f6/0x930 fs/read_write.c:470 ksys_read+0x1e8/0x250 fs/read_write.c:607 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: 0033:0x7f9952f8c2ae RSP: 002b:00007ffed2083d18 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 00007ffed2083da0 RCX: 00007f9952f8c2ae RDX: 0000000000000040 RSI: 00007f99530f8020 RDI: 00000000000000f9 RBP: 0000000000000003 R08: 0000000000000000 R09: fefefefeff646b66 R10: 0000000000000010 R11: 0000000000000246 R12: 0000000000000061 R13: 000000000022f94c R14: 0000000000000000 R15: 00007ffed2083de0 task:syz-executor.5 state:S stack:25592 pid: 1308 ppid: 1295 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:5182 [inline] __schedule+0x93f/0x26f0 kernel/sched/core.c:6494 schedule+0xda/0x1b0 kernel/sched/core.c:6570 pipe_read+0xa08/0xf90 fs/pipe.c:378 call_read_iter include/linux/fs.h:2181 [inline] new_sync_read fs/read_write.c:389 [inline] vfs_read+0x7f6/0x930 fs/read_write.c:470 ksys_read+0x1e8/0x250 fs/read_write.c:607 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: 0033:0x7f34478e32ae RSP: 002b:00007fffdbb19b78 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 00007fffdbb19c00 RCX: 00007f34478e32ae RDX: 0000000000000040 RSI: 00007f3447a4f020 RDI: 00000000000000f9 RBP: 0000000000000003 R08: 0000000000000000 R09: fefefefeff646b66 R10: 0000000000000010 R11: 0000000000000246 R12: 0000000000000061 R13: 000000000022fed0 R14: 0000000000000001 R15: 00007fffdbb19c40 task:syz-executor.2 state:S stack:23864 pid: 1309 ppid: 1297 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:5182 [inline] __schedule+0x93f/0x26f0 kernel/sched/core.c:6494 schedule+0xda/0x1b0 kernel/sched/core.c:6570 pipe_read+0xa08/0xf90 fs/pipe.c:378 call_read_iter include/linux/fs.h:2181 [inline] new_sync_read fs/read_write.c:389 [inline] vfs_read+0x7f6/0x930 fs/read_write.c:470 ksys_read+0x1e8/0x250 fs/read_write.c:607 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: 0033:0x7f9142de22ae RSP: 002b:00007fffff1b9428 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 00007fffff1b94b0 RCX: 00007f9142de22ae RDX: 0000000000000040 RSI: 00007f9142f4e020 RDI: 00000000000000f9 RBP: 0000000000000003 R08: 0000000000000000 R09: fefefefeff646b66 R10: 0000000000000010 R11: 0000000000000246 R12: 0000000000000060 R13: 000000000022f9cf R14: 0000000000000000 R15: 00007fffff1b94f0 task:syz-executor.0 state:S stack:25144 pid: 1318 ppid: 1301 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:5182 [inline] __schedule+0x93f/0x26f0 kernel/sched/core.c:6494 schedule+0xda/0x1b0 kernel/sched/core.c:6570 pipe_read+0xa08/0xf90 fs/pipe.c:378 call_read_iter include/linux/fs.h:2181 [inline] new_sync_read fs/read_write.c:389 [inline] vfs_read+0x7f6/0x930 fs/read_write.c:470 ksys_read+0x1e8/0x250 fs/read_write.c:607 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: 0033:0x7fa5d2f762ae RSP: 002b:00007ffd9ea8dc58 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 00007ffd9ea8dce0 RCX: 00007fa5d2f762ae RDX: 0000000000000040 RSI: 00007fa5d30e2020 RDI: 00000000000000f9 RBP: 0000000000000003 R08: 0000000000000000 R09: fefefefeff646b66 R10: 0000000000000010 R11: 0000000000000246 R12: 0000000000000061 R13: 0000000000230431 R14: 0000000000000000 R15: 00007ffd9ea8dd20 task:kworker/1:3 state:I stack:22144 pid: 4069 ppid: 2 flags:0x00004000 Workqueue: 0x0 (events) Call Trace: context_switch kernel/sched/core.c:5182 [inline] __schedule+0x93f/0x26f0 kernel/sched/core.c:6494 schedule+0xda/0x1b0 kernel/sched/core.c:6570 worker_thread+0x15c/0x1080 kernel/workqueue.c:2457 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:kworker/0:4 state:I stack:21944 pid: 4114 ppid: 2 flags:0x00004000 Workqueue: 0x0 (events) Call Trace: context_switch kernel/sched/core.c:5182 [inline] __schedule+0x93f/0x26f0 kernel/sched/core.c:6494 schedule+0xda/0x1b0 kernel/sched/core.c:6570 worker_thread+0x15c/0x1080 kernel/workqueue.c:2457 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:kworker/1:4 state:I stack:21672 pid: 4115 ppid: 2 flags:0x00004000 Workqueue: 0x0 (events) Call Trace: context_switch kernel/sched/core.c:5182 [inline] __schedule+0x93f/0x26f0 kernel/sched/core.c:6494 schedule+0xda/0x1b0 kernel/sched/core.c:6570 worker_thread+0x15c/0x1080 kernel/workqueue.c:2457 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:kworker/0:5 state:D stack:22096 pid: 4148 ppid: 2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:5182 [inline] __schedule+0x93f/0x26f0 kernel/sched/core.c:6494 schedule+0xda/0x1b0 kernel/sched/core.c:6570 schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1935 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common+0x1be/0x530 kernel/sched/completion.c:106 usb_start_wait_urb+0x144/0x4b0 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 hid_set_idle drivers/hid/usbhid/hid-core.c:657 [inline] usbhid_parse+0x606/0xab0 drivers/hid/usbhid/hid-core.c:1036 hid_add_device+0x18a/0x9d0 drivers/hid/hid-core.c:2724 usbhid_probe+0xb49/0x1040 drivers/hid/usbhid/hid-core.c:1424 usb_probe_interface+0x30b/0x7f0 drivers/usb/core/driver.c:396 call_driver_probe drivers/base/dd.c:560 [inline] really_probe+0x249/0xb90 drivers/base/dd.c:639 __driver_probe_device+0x1df/0x4d0 drivers/base/dd.c:778 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:808 __device_attach_driver+0x1d0/0x2e0 drivers/base/dd.c:936 bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:427 __device_attach+0x1e4/0x530 drivers/base/dd.c:1008 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:487 device_add+0xbd5/0x1e90 drivers/base/core.c:3517 usb_set_configuration+0x1019/0x1900 drivers/usb/core/message.c:2170 usb_generic_driver_probe+0xba/0x100 drivers/usb/core/generic.c:238 usb_probe_device+0xd4/0x2c0 drivers/usb/core/driver.c:293 call_driver_probe drivers/base/dd.c:560 [inline] really_probe+0x249/0xb90 drivers/base/dd.c:639 __driver_probe_device+0x1df/0x4d0 drivers/base/dd.c:778 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:808 __device_attach_driver+0x1d0/0x2e0 drivers/base/dd.c:936 bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:427 __device_attach+0x1e4/0x530 drivers/base/dd.c:1008 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:487 device_add+0xbd5/0x1e90 drivers/base/core.c:3517 usb_new_device.cold+0x685/0x10ad 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+0x26c7/0x4610 drivers/usb/core/hub.c:5735 process_one_work+0x991/0x1610 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:kworker/1:6 state:I stack:22744 pid: 4555 ppid: 2 flags:0x00004000 Workqueue: 0x0 (events) Call Trace: context_switch kernel/sched/core.c:5182 [inline] __schedule+0x93f/0x26f0 kernel/sched/core.c:6494 schedule+0xda/0x1b0 kernel/sched/core.c:6570 worker_thread+0x15c/0x1080 kernel/workqueue.c:2457 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:syz-executor.4 state:S stack:27944 pid: 4615 ppid: 4072 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:5182 [inline] __schedule+0x93f/0x26f0 kernel/sched/core.c:6494 schedule+0xda/0x1b0 kernel/sched/core.c:6570 do_wait+0x6f4/0xce0 kernel/exit.c:1537 kernel_wait4+0x14c/0x260 kernel/exit.c:1681 __do_sys_wait4+0x13f/0x150 kernel/exit.c:1709 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: 0033:0x7ff910a8a116 RSP: 002b:00007ffd444aaa58 EFLAGS: 00000246 ORIG_RAX: 000000000000003d RAX: ffffffffffffffda RBX: 0000000000001208 RCX: 00007ff910a8a116 RDX: 0000000040000000 RSI: 00007ffd444aaa6c RDI: 00000000ffffffff RBP: 00007ffd444aaa6c R08: 0000000000000000 R09: 0000555556eef400 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003 R13: 00007ffd444aab60 R14: 00007ff910bae9d8 R15: 000000000000000c task:syz-executor.4 state:S stack:25728 pid: 4616 ppid: 4615 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:5182 [inline] __schedule+0x93f/0x26f0 kernel/sched/core.c:6494 schedule+0xda/0x1b0 kernel/sched/core.c:6570 pipe_read+0xa08/0xf90 fs/pipe.c:378 call_read_iter include/linux/fs.h:2181 [inline] new_sync_read fs/read_write.c:389 [inline] vfs_read+0x7f6/0x930 fs/read_write.c:470 ksys_read+0x1e8/0x250 fs/read_write.c:607 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: 0033:0x7ff910a3e2ae RSP: 002b:00007ffd444aa858 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 00007ffd444aa8e0 RCX: 00007ff910a3e2ae RDX: 0000000000000040 RSI: 00007ff910baa020 RDI: 00000000000000f9 RBP: 0000000000000003 R08: 0000000000000000 R09: fefefefeff646b66 R10: 0000000000000010 R11: 0000000000000246 R12: 0000000000000032 R13: 00000000002303e2 R14: 0000000000000011 R15: 00007ffd444aa920 task:kworker/1:7 state:D stack:22520 pid: 6508 ppid: 2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:5182 [inline] __schedule+0x93f/0x26f0 kernel/sched/core.c:6494 schedule+0xda/0x1b0 kernel/sched/core.c:6570 synchronize_rcu_expedited+0x39a/0x670 kernel/rcu/tree_exp.h:955 synchronize_rcu+0x22b/0x260 kernel/rcu/tree.c:3519 atomic_notifier_chain_unregister+0xa3/0x130 kernel/notifier.c:197 ieee80211_unregister_hw+0x3a/0x1f0 net/mac80211/main.c:1458 disconnect+0x72/0x150 drivers/net/wireless/zydas/zd1211rw/zd_usb.c:1428 usb_unbind_interface+0x1d8/0x8e0 drivers/usb/core/driver.c:458 device_remove drivers/base/dd.c:550 [inline] device_remove+0x11f/0x170 drivers/base/dd.c:542 __device_release_driver drivers/base/dd.c:1249 [inline] device_release_driver_internal+0x4a1/0x700 drivers/base/dd.c:1275 bus_remove_device+0x2e3/0x590 drivers/base/bus.c:529 device_del+0x4f3/0xc80 drivers/base/core.c:3704 usb_disable_device+0x356/0x7a0 drivers/usb/core/message.c:1419 usb_disconnect.cold+0x259/0x6ed drivers/usb/core/hub.c:2235 hub_port_connect drivers/usb/core/hub.c:5197 [inline] hub_port_connect_change drivers/usb/core/hub.c:5497 [inline] port_event drivers/usb/core/hub.c:5653 [inline] hub_event+0x1f86/0x4610 drivers/usb/core/hub.c:5735 process_one_work+0x991/0x1610 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:kworker/0:0 state:I stack:22024 pid: 9796 ppid: 2 flags:0x00004000 Workqueue: 0x0 (events) Call Trace: context_switch kernel/sched/core.c:5182 [inline] __schedule+0x93f/0x26f0 kernel/sched/core.c:6494 schedule+0xda/0x1b0 kernel/sched/core.c:6570 worker_thread+0x15c/0x1080 kernel/workqueue.c:2457 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:kworker/u4:1 state:D stack:26464 pid:11876 ppid: 2 flags:0x00004000 Workqueue: events_unbound fsnotify_connector_destroy_workfn Call Trace: context_switch kernel/sched/core.c:5182 [inline] __schedule+0x93f/0x26f0 kernel/sched/core.c:6494 schedule+0xda/0x1b0 kernel/sched/core.c:6570 schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1911 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common+0x1be/0x530 kernel/sched/completion.c:106 __synchronize_srcu+0x1f2/0x290 kernel/rcu/srcutree.c:1215 fsnotify_connector_destroy_workfn+0x49/0xa0 fs/notify/mark.c:208 process_one_work+0x991/0x1610 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:kworker/u4:3 state:I stack:27040 pid:13783 ppid: 2 flags:0x00004000 Workqueue: 0x0 (events_unbound) Call Trace: context_switch kernel/sched/core.c:5182 [inline] __schedule+0x93f/0x26f0 kernel/sched/core.c:6494 schedule+0xda/0x1b0 kernel/sched/core.c:6570 worker_thread+0x15c/0x1080 kernel/workqueue.c:2457 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:kworker/1:5 state:I stack:22752 pid:15924 ppid: 2 flags:0x00004000 Workqueue: 0x0 (events) Call Trace: context_switch kernel/sched/core.c:5182 [inline] __schedule+0x93f/0x26f0 kernel/sched/core.c:6494 schedule+0xda/0x1b0 kernel/sched/core.c:6570 worker_thread+0x15c/0x1080 kernel/workqueue.c:2457 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:kworker/0:7 state:D stack:23136 pid:19241 ppid: 2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:5182 [inline] __schedule+0x93f/0x26f0 kernel/sched/core.c:6494 schedule+0xda/0x1b0 kernel/sched/core.c:6570 schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1935 schedule_timeout_uninterruptible kernel/time/timer.c:1969 [inline] msleep+0xb2/0xf0 kernel/time/timer.c:2091 hub_port_reset+0xb31/0x1cc0 drivers/usb/core/hub.c:3058 hub_port_init+0x18e/0x3590 drivers/usb/core/hub.c:4703 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+0x24d1/0x4610 drivers/usb/core/hub.c:5735 process_one_work+0x991/0x1610 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:kworker/1:2 state:D stack:23136 pid:19837 ppid: 2 flags:0x00004000 Workqueue: rcu_gp wait_rcu_exp_gp Call Trace: context_switch kernel/sched/core.c:5182 [inline] __schedule+0x93f/0x26f0 kernel/sched/core.c:6494 schedule+0xda/0x1b0 kernel/sched/core.c:6570 schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1935 synchronize_rcu_expedited_wait_once kernel/rcu/tree_exp.h:571 [inline] synchronize_rcu_expedited_wait kernel/rcu/tree_exp.h:622 [inline] rcu_exp_wait_wake+0x28f/0xf80 kernel/rcu/tree_exp.h:688 process_one_work+0x991/0x1610 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:kworker/u4:2 state:I stack:27032 pid:21792 ppid: 2 flags:0x00004000 Workqueue: 0x0 (events_unbound) Call Trace: context_switch kernel/sched/core.c:5182 [inline] __schedule+0x93f/0x26f0 kernel/sched/core.c:6494 schedule+0xda/0x1b0 kernel/sched/core.c:6570 worker_thread+0x15c/0x1080 kernel/workqueue.c:2457 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:kworker/0:8 state:I stack:29568 pid:25351 ppid: 2 flags:0x00004000 Workqueue: 0x0 (events) Call Trace: context_switch kernel/sched/core.c:5182 [inline] __schedule+0x93f/0x26f0 kernel/sched/core.c:6494 schedule+0xda/0x1b0 kernel/sched/core.c:6570 worker_thread+0x15c/0x1080 kernel/workqueue.c:2457 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:udevd state:S stack:27000 pid:26006 ppid: 1179 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:5182 [inline] __schedule+0x93f/0x26f0 kernel/sched/core.c:6494 schedule+0xda/0x1b0 kernel/sched/core.c:6570 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6629 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0xa44/0x1350 kernel/locking/mutex.c:747 device_lock_interruptible include/linux/device.h:840 [inline] read_descriptors+0x3c/0x2c0 drivers/usb/core/sysfs.c:873 sysfs_kf_bin_read+0x196/0x270 fs/sysfs/file.c:97 kernfs_file_read_iter fs/kernfs/file.c:271 [inline] kernfs_fop_read_iter+0x3dc/0x710 fs/kernfs/file.c:300 call_read_iter include/linux/fs.h:2181 [inline] new_sync_read fs/read_write.c:389 [inline] vfs_read+0x67d/0x930 fs/read_write.c:470 ksys_read+0x127/0x250 fs/read_write.c:607 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: 0033:0x7fb1f61fa8fe RSP: 002b:00007ffe45da03a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fb1f61fa8fe RDX: 0000000000010011 RSI: 00007ffe45da03d7 RDI: 0000000000000008 RBP: 00007ffe45db0aa8 R08: 00007fb1f62caa00 R09: 0000557f87bcfeb0 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000008 R13: 0000000000000000 R14: 00007ffe45da03d7 R15: 0000557f862e8a7c task:udevd state:S stack:28304 pid:26007 ppid: 1179 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:5182 [inline] __schedule+0x93f/0x26f0 kernel/sched/core.c:6494 schedule+0xda/0x1b0 kernel/sched/core.c:6570 schedule_hrtimeout_range_clock+0x343/0x390 kernel/time/hrtimer.c:2296 ep_poll fs/eventpoll.c:1878 [inline] do_epoll_wait+0x12ba/0x1950 fs/eventpoll.c:2256 __do_sys_epoll_wait fs/eventpoll.c:2268 [inline] __se_sys_epoll_wait fs/eventpoll.c:2263 [inline] __x64_sys_epoll_wait+0x158/0x270 fs/eventpoll.c:2263 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: 0033:0x7fb1f6208e46 RSP: 002b:00007ffe45db5ed8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e8 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fb1f6208e46 RDX: 0000000000000004 RSI: 00007ffe45db5f18 RDI: 0000000000000004 RBP: 0000557f87c06a90 R08: 0000000000000007 R09: 0000557f87bdf790 R10: 00000000ffffffff R11: 0000000000000246 R12: 0000557f87be9be0 R13: 00007ffe45db5f18 R14: 00000000ffffffff R15: 0000557f87bc5910 task:udevd state:S stack:27952 pid:26014 ppid: 1179 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:5182 [inline] __schedule+0x93f/0x26f0 kernel/sched/core.c:6494 schedule+0xda/0x1b0 kernel/sched/core.c:6570 schedule_hrtimeout_range_clock+0x343/0x390 kernel/time/hrtimer.c:2296 ep_poll fs/eventpoll.c:1878 [inline] do_epoll_wait+0x12ba/0x1950 fs/eventpoll.c:2256 __do_sys_epoll_wait fs/eventpoll.c:2268 [inline] __se_sys_epoll_wait fs/eventpoll.c:2263 [inline] __x64_sys_epoll_wait+0x158/0x270 fs/eventpoll.c:2263 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: 0033:0x7fb1f6208e46 RSP: 002b:00007ffe45db5ed8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e8 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fb1f6208e46 RDX: 0000000000000004 RSI: 00007ffe45db5f18 RDI: 0000000000000004 RBP: 0000557f87bee0c0 R08: 0000000000000007 R09: 0000557f87bead40 R10: 00000000ffffffff R11: 0000000000000246 R12: 0000557f87beda70 R13: 00007ffe45db5f18 R14: 00000000ffffffff R15: 0000557f87bc5910 task:udevd state:S stack:27584 pid:26018 ppid: 1179 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:5182 [inline] __schedule+0x93f/0x26f0 kernel/sched/core.c:6494 schedule+0xda/0x1b0 kernel/sched/core.c:6570 schedule_hrtimeout_range_clock+0x343/0x390 kernel/time/hrtimer.c:2296 ep_poll fs/eventpoll.c:1878 [inline] do_epoll_wait+0x12ba/0x1950 fs/eventpoll.c:2256 __do_sys_epoll_wait fs/eventpoll.c:2268 [inline] __se_sys_epoll_wait fs/eventpoll.c:2263 [inline] __x64_sys_epoll_wait+0x158/0x270 fs/eventpoll.c:2263 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: 0033:0x7fb1f6208e46 RSP: 002b:00007ffe45db5ed8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e8 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fb1f6208e46 RDX: 0000000000000004 RSI: 00007ffe45db5f18 RDI: 0000000000000004 RBP: 0000557f87bc5cc0 R08: 0000000000000007 R09: 0000557f87bcebe0 R10: 00000000ffffffff R11: 0000000000000246 R12: 0000557f87bf7b30 R13: 00007ffe45db5f18 R14: 0000000000000008 R15: 0000557f87bc5910 task:udevd state:S stack:28512 pid:26028 ppid: 1179 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:5182 [inline] __schedule+0x93f/0x26f0 kernel/sched/core.c:6494 schedule+0xda/0x1b0 kernel/sched/core.c:6570 schedule_hrtimeout_range_clock+0x343/0x390 kernel/time/hrtimer.c:2296 ep_poll fs/eventpoll.c:1878 [inline] do_epoll_wait+0x12ba/0x1950 fs/eventpoll.c:2256 __do_sys_epoll_wait fs/eventpoll.c:2268 [inline] __se_sys_epoll_wait fs/eventpoll.c:2263 [inline] __x64_sys_epoll_wait+0x158/0x270 fs/eventpoll.c:2263 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: 0033:0x7fb1f6208e46 RSP: 002b:00007ffe45db5ed8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e8 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fb1f6208e46 RDX: 0000000000000004 RSI: 00007ffe45db5f18 RDI: 0000000000000004 RBP: 0000557f87bee0c0 R08: 0000000000000007 R09: 0000557f87bcebe0 R10: 00000000ffffffff R11: 0000000000000246 R12: 0000557f87bc5480 R13: 00007ffe45db5f18 R14: 00000000ffffffff R15: 0000557f87bc5910 task:udevd state:S stack:27648 pid:26029 ppid: 1179 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:5182 [inline] __schedule+0x93f/0x26f0 kernel/sched/core.c:6494 schedule+0xda/0x1b0 kernel/sched/core.c:6570 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6629 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0xa44/0x1350 kernel/locking/mutex.c:747 device_lock_interruptible include/linux/device.h:840 [inline] read_descriptors+0x3c/0x2c0 drivers/usb/core/sysfs.c:873 sysfs_kf_bin_read+0x196/0x270 fs/sysfs/file.c:97 kernfs_file_read_iter fs/kernfs/file.c:271 [inline] kernfs_fop_read_iter+0x3dc/0x710 fs/kernfs/file.c:300 call_read_iter include/linux/fs.h:2181 [inline] new_sync_read fs/read_write.c:389 [inline] vfs_read+0x67d/0x930 fs/read_write.c:470 ksys_read+0x127/0x250 fs/read_write.c:607 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: 0033:0x7fb1f61fa8fe RSP: 002b:00007ffe45da03a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fb1f61fa8fe RDX: 0000000000010011 RSI: 00007ffe45da03d7 RDI: 0000000000000008 RBP: 00007ffe45db0aa8 R08: 00007fb1f62caa00 R09: 0000557f87c06b30 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000008 R13: 0000000000000000 R14: 00007ffe45da03d7 R15: 0000557f862e8a7c task:udevd state:S stack:28512 pid:26041 ppid: 1179 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:5182 [inline] __schedule+0x93f/0x26f0 kernel/sched/core.c:6494 schedule+0xda/0x1b0 kernel/sched/core.c:6570 schedule_hrtimeout_range_clock+0x343/0x390 kernel/time/hrtimer.c:2296 ep_poll fs/eventpoll.c:1878 [inline] do_epoll_wait+0x12ba/0x1950 fs/eventpoll.c:2256 __do_sys_epoll_wait fs/eventpoll.c:2268 [inline] __se_sys_epoll_wait fs/eventpoll.c:2263 [inline] __x64_sys_epoll_wait+0x158/0x270 fs/eventpoll.c:2263 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: 0033:0x7fb1f6208e46 RSP: 002b:00007ffe45db5ed8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e8 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fb1f6208e46 RDX: 0000000000000004 RSI: 00007ffe45db5f18 RDI: 0000000000000004 RBP: 0000557f87befc30 R08: 0000000000000007 R09: 0000557f87bdf790 R10: 00000000ffffffff R11: 0000000000000246 R12: 0000557f87bf6410 R13: 00007ffe45db5f18 R14: 00000000ffffffff R15: 0000557f87bc5910 task:udevd state:S stack:27648 pid:26058 ppid: 1179 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:5182 [inline] __schedule+0x93f/0x26f0 kernel/sched/core.c:6494 schedule+0xda/0x1b0 kernel/sched/core.c:6570 schedule_hrtimeout_range_clock+0x343/0x390 kernel/time/hrtimer.c:2296 ep_poll fs/eventpoll.c:1878 [inline] do_epoll_wait+0x12ba/0x1950 fs/eventpoll.c:2256 __do_sys_epoll_wait fs/eventpoll.c:2268 [inline] __se_sys_epoll_wait fs/eventpoll.c:2263 [inline] __x64_sys_epoll_wait+0x158/0x270 fs/eventpoll.c:2263 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: 0033:0x7fb1f6208e46 RSP: 002b:00007ffe45db5ed8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e8 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fb1f6208e46 RDX: 0000000000000004 RSI: 00007ffe45db5f18 RDI: 0000000000000004 RBP: 0000557f87bdb300 R08: 0000000000000007 R09: 0000557f87bdf790 R10: 00000000ffffffff R11: 0000000000000246 R12: 0000557f87c037f0 R13: 00007ffe45db5f18 R14: 00000000ffffffff R15: 0000557f87bc5910 task:kworker/u4:0 state:D stack:27160 pid:26127 ppid: 2 flags:0x00004000 Workqueue: events_unbound fsnotify_mark_destroy_workfn Call Trace: context_switch kernel/sched/core.c:5182 [inline] __schedule+0x93f/0x26f0 kernel/sched/core.c:6494 schedule+0xda/0x1b0 kernel/sched/core.c:6570 schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1911 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common+0x1be/0x530 kernel/sched/completion.c:106 __synchronize_srcu+0x1f2/0x290 kernel/rcu/srcutree.c:1215 fsnotify_mark_destroy_workfn+0xfd/0x3c0 fs/notify/mark.c:898 process_one_work+0x991/0x1610 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:kworker/1:1 state:D stack:22464 pid:26643 ppid: 2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:5182 [inline] __schedule+0x93f/0x26f0 kernel/sched/core.c:6494 schedule+0xda/0x1b0 kernel/sched/core.c:6570 schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1911 ___down_common kernel/locking/semaphore.c:225 [inline] __down_common+0x341/0x780 kernel/locking/semaphore.c:246 down+0x70/0x90 kernel/locking/semaphore.c:63 hid_device_remove+0x25/0x200 drivers/hid/hid-core.c:2621 device_remove+0xc8/0x170 drivers/base/dd.c:548 __device_release_driver drivers/base/dd.c:1249 [inline] device_release_driver_internal+0x4a1/0x700 drivers/base/dd.c:1275 bus_remove_device+0x2e3/0x590 drivers/base/bus.c:529 device_del+0x4f3/0xc80 drivers/base/core.c:3704 hid_remove_device drivers/hid/hid-core.c:2796 [inline] hid_destroy_device+0xe1/0x150 drivers/hid/hid-core.c:2815 usbhid_disconnect+0x9f/0xe0 drivers/hid/usbhid/hid-core.c:1451 usb_unbind_interface+0x1d8/0x8e0 drivers/usb/core/driver.c:458 device_remove drivers/base/dd.c:550 [inline] device_remove+0x11f/0x170 drivers/base/dd.c:542 __device_release_driver drivers/base/dd.c:1249 [inline] device_release_driver_internal+0x4a1/0x700 drivers/base/dd.c:1275 bus_remove_device+0x2e3/0x590 drivers/base/bus.c:529 device_del+0x4f3/0xc80 drivers/base/core.c:3704 usb_disable_device+0x356/0x7a0 drivers/usb/core/message.c:1419 usb_disconnect.cold+0x259/0x6ed drivers/usb/core/hub.c:2235 hub_port_connect drivers/usb/core/hub.c:5197 [inline] hub_port_connect_change drivers/usb/core/hub.c:5497 [inline] port_event drivers/usb/core/hub.c:5653 [inline] hub_event+0x1f86/0x4610 drivers/usb/core/hub.c:5735 process_one_work+0x991/0x1610 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:kworker/0:1 state:I stack:29664 pid:29035 ppid: 2 flags:0x00004000 Workqueue: 0x0 (events) Call Trace: context_switch kernel/sched/core.c:5182 [inline] __schedule+0x93f/0x26f0 kernel/sched/core.c:6494 schedule+0xda/0x1b0 kernel/sched/core.c:6570 worker_thread+0x15c/0x1080 kernel/workqueue.c:2457 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:kworker/0:6 state:D stack:23272 pid:29102 ppid: 2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:5182 [inline] __schedule+0x93f/0x26f0 kernel/sched/core.c:6494 schedule+0xda/0x1b0 kernel/sched/core.c:6570 schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1935 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common+0x1be/0x530 kernel/sched/completion.c:106 usb_start_wait_urb+0x144/0x4b0 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 hid_get_class_descriptor.constprop.0+0x9c/0xf0 drivers/hid/usbhid/hid-core.c:670 usbhid_parse+0x647/0xab0 drivers/hid/usbhid/hid-core.c:1038 hid_add_device+0x18a/0x9d0 drivers/hid/hid-core.c:2724 usbhid_probe+0xb49/0x1040 drivers/hid/usbhid/hid-core.c:1424 usb_probe_interface+0x30b/0x7f0 drivers/usb/core/driver.c:396 call_driver_probe drivers/base/dd.c:560 [inline] really_probe+0x249/0xb90 drivers/base/dd.c:639 __driver_probe_device+0x1df/0x4d0 drivers/base/dd.c:778 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:808 __device_attach_driver+0x1d0/0x2e0 drivers/base/dd.c:936 bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:427 __device_attach+0x1e4/0x530 drivers/base/dd.c:1008 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:487 device_add+0xbd5/0x1e90 drivers/base/core.c:3517 usb_set_configuration+0x1019/0x1900 drivers/usb/core/message.c:2170 usb_generic_driver_probe+0xba/0x100 drivers/usb/core/generic.c:238 usb_probe_device+0xd4/0x2c0 drivers/usb/core/driver.c:293 call_driver_probe drivers/base/dd.c:560 [inline] really_probe+0x249/0xb90 drivers/base/dd.c:639 __driver_probe_device+0x1df/0x4d0 drivers/base/dd.c:778 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:808 __device_attach_driver+0x1d0/0x2e0 drivers/base/dd.c:936 bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:427 __device_attach+0x1e4/0x530 drivers/base/dd.c:1008 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:487 device_add+0xbd5/0x1e90 drivers/base/core.c:3517 usb_new_device.cold+0x685/0x10ad 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+0x26c7/0x4610 drivers/usb/core/hub.c:5735 process_one_work+0x991/0x1610 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:kworker/u4:4 state:I stack:30952 pid:29493 ppid: 2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5182 [inline] __schedule+0x93f/0x26f0 kernel/sched/core.c:6494 schedule+0xda/0x1b0 kernel/sched/core.c:6570 worker_thread+0x15c/0x1080 kernel/workqueue.c:2457 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:kworker/1:8 state:I stack:29344 pid:29840 ppid: 2 flags:0x00004000 Workqueue: 0x0 (rcu_gp) Call Trace: context_switch kernel/sched/core.c:5182 [inline] __schedule+0x93f/0x26f0 kernel/sched/core.c:6494 schedule+0xda/0x1b0 kernel/sched/core.c:6570 worker_thread+0x15c/0x1080 kernel/workqueue.c:2457 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:kworker/0:9 state:R running task stack:23216 pid:30997 ppid: 2 flags:0x00004000 Workqueue: 0x0 (events) Call Trace: context_switch kernel/sched/core.c:5182 [inline] __schedule+0x93f/0x26f0 kernel/sched/core.c:6494 schedule+0xda/0x1b0 kernel/sched/core.c:6570 worker_thread+0x15c/0x1080 kernel/workqueue.c:2457 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:udevd state:S stack:28512 pid:31038 ppid: 1179 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:5182 [inline] __schedule+0x93f/0x26f0 kernel/sched/core.c:6494 schedule+0xda/0x1b0 kernel/sched/core.c:6570 schedule_hrtimeout_range_clock+0x343/0x390 kernel/time/hrtimer.c:2296 ep_poll fs/eventpoll.c:1878 [inline] do_epoll_wait+0x12ba/0x1950 fs/eventpoll.c:2256 __do_sys_epoll_wait fs/eventpoll.c:2268 [inline] __se_sys_epoll_wait fs/eventpoll.c:2263 [inline] __x64_sys_epoll_wait+0x158/0x270 fs/eventpoll.c:2263 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: 0033:0x7fb1f6208e46 RSP: 002b:00007ffe45db5ed8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e8 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fb1f6208e46 RDX: 0000000000000004 RSI: 00007ffe45db5f18 RDI: 0000000000000004 RBP: 0000557f87bef7b0 R08: 0000000000000007 R09: 0000557f87bcebe0 R10: 00000000ffffffff R11: 0000000000000246 R12: 0000557f87c01990 R13: 00007ffe45db5f18 R14: 00000000ffffffff R15: 0000557f87bc5910 task:syz-executor.1 state:S stack:28752 pid:32702 ppid: 1303 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:5182 [inline] __schedule+0x93f/0x26f0 kernel/sched/core.c:6494 schedule+0xda/0x1b0 kernel/sched/core.c:6570 freezable_schedule include/linux/freezer.h:172 [inline] futex_wait_queue+0x144/0x3b0 kernel/futex/waitwake.c:355 futex_wait+0x28e/0x680 kernel/futex/waitwake.c:656 do_futex+0x1af/0x300 kernel/futex/syscalls.c:106 __do_sys_futex kernel/futex/syscalls.c:183 [inline] __se_sys_futex kernel/futex/syscalls.c:164 [inline] __x64_sys_futex+0x1b0/0x4a0 kernel/futex/syscalls.c:164 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: 0033:0x7f95a85d35a9 RSP: 002b:00007ffe87851d08 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: ffffffffffffffda RBX: 00007f95a86f4f8c RCX: 00007f95a85d35a9 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f95a86f4f8c RBP: 00007f95a86f4f80 R08: 00007ffe87863080 R09: 0000000000000000 R10: 00007ffe87851df0 R11: 0000000000000246 R12: 000000000022f502 R13: 00007ffe87851df0 R14: 00007ffe87851e10 R15: 000000000000015e task:syz-executor.1 state:S stack:29088 pid:32703 ppid: 1303 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:5182 [inline] __schedule+0x93f/0x26f0 kernel/sched/core.c:6494 schedule+0xda/0x1b0 kernel/sched/core.c:6570 freezable_schedule include/linux/freezer.h:172 [inline] do_nanosleep+0x197/0x690 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: 0033:0x7f95a85f82d1 RSP: 002b:00007f95a7d46070 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f95a85f82d1 RDX: 00007f95a7d460b0 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 00007f95a7d46108 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000022000 INFO: lockdep is turned off. keytouch 0003:0926:3333.0172: can't resubmit intr, dummy_hcd.2-1/input0, status -19 ---------------- Code disassembly (best guess): 0: 74 24 je 0x26 2: 10 e8 adc %ch,%al 4: 1a f0 sbb %al,%dh 6: 33 fb xor %ebx,%edi 8: 48 89 ef mov %rbp,%rdi b: e8 a2 71 34 fb callq 0xfb3471b2 10: 81 e3 00 02 00 00 and $0x200,%ebx 16: 75 25 jne 0x3d 18: 9c pushfq 19: 58 pop %rax 1a: f6 c4 02 test $0x2,%ah 1d: 75 2d jne 0x4c 1f: 48 85 db test %rbx,%rbx 22: 74 01 je 0x25 24: fb sti 25: bf 01 00 00 00 mov $0x1,%edi * 2a: e8 83 ce 29 fb callq 0xfb29ceb2 <-- trapping instruction 2f: 65 8b 05 fc 3f 0c 7a mov %gs:0x7a0c3ffc(%rip),%eax # 0x7a0c4032 36: 85 c0 test %eax,%eax 38: 74 0a je 0x44 3a: 5b pop %rbx 3b: 5d pop %rbp 3c: c3 retq 3d: e8 .byte 0xe8 3e: 30 .byte 0x30 3f: 4a rex.WX