rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: {
 0-...D } 2672 jiffies s: 86077 root: 0x1/.
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 702 Comm: acpid Not tainted 6.12.0-rc3-syzkaller-00029-g64f3b5a6bc49 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:in_softirq_really kernel/kcov.c:171 [inline]
RIP: 0010:check_kcov_mode kernel/kcov.c:183 [inline]
RIP: 0010:write_comp_data+0x1f/0x90 kernel/kcov.c:246
Code: 90 90 90 90 90 90 90 90 90 90 90 49 89 d2 49 89 f8 49 89 f1 65 48 8b 15 4f e4 ad 7e 65 8b 05 50 e4 ad 7e a9 00 01 ff 00 74 1d <f6> c4 01 74 67 a9 00 00 0f 00 75 60 a9 00 00 f0 00 75 59 8b 82 54
RSP: 0018:ffffc90000007128 EFLAGS: 00000006
RAX: 0000000080000104 RBX: ffffffff934685a0 RCX: ffffffff82a1e97e
RDX: ffff8881103b57c0 RSI: 0000000000000100 RDI: 0000000000000005
RBP: 0000000000000100 R08: 0000000000000005 R09: 0000000000000100
R10: 0000000000000100 R11: 0000000000000000 R12: 0000000000000000
R13: ffffffff93635620 R14: ffffffff93635670 R15: 0000000000000039
FS:  00007f9dff6df740(0000) GS:ffff8881f5800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9dff6dfa10 CR3: 0000000128f60000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 serial8250_console_write+0x3ce/0x17c0 drivers/tty/serial/8250/8250_port.c:3384
 console_emit_next_record kernel/printk/printk.c:3092 [inline]
 console_flush_all+0x800/0xc60 kernel/printk/printk.c:3180
 __console_flush_and_unlock kernel/printk/printk.c:3239 [inline]
 console_unlock+0xd9/0x210 kernel/printk/printk.c:3279
 vprintk_emit+0x424/0x6f0 kernel/printk/printk.c:2407
 vprintk+0x7f/0xa0 kernel/printk/printk_safe.c:68
 _printk+0xc8/0x100 kernel/printk/printk.c:2432
 printk_stack_address arch/x86/kernel/dumpstack.c:72 [inline]
 show_trace_log_lvl+0x1b7/0x3d0 arch/x86/kernel/dumpstack.c:285
 sched_show_task kernel/sched/core.c:7589 [inline]
 sched_show_task+0x3f0/0x5f0 kernel/sched/core.c:7564
 show_state_filter+0xee/0x320 kernel/sched/core.c:7634
 k_spec drivers/tty/vt/keyboard.c:667 [inline]
 k_spec+0xed/0x150 drivers/tty/vt/keyboard.c:656
 kbd_keycode drivers/tty/vt/keyboard.c:1522 [inline]
 kbd_event+0xcbd/0x17a0 drivers/tty/vt/keyboard.c:1541
 input_handler_events_default+0x116/0x1b0 drivers/input/input.c:2549
 input_pass_values+0x777/0x8e0 drivers/input/input.c:126
 input_event_dispose drivers/input/input.c:341 [inline]
 input_handle_event+0xf0b/0x14d0 drivers/input/input.c:369
 input_event drivers/input/input.c:398 [inline]
 input_event+0x83/0xa0 drivers/input/input.c:390
 input_sync include/linux/input.h:451 [inline]
 hidinput_report_event+0xb2/0x100 drivers/hid/hid-input.c:1736
 hid_report_raw_event+0x274/0x11c0 drivers/hid/hid-core.c:2047
 __hid_input_report.constprop.0+0x341/0x440 drivers/hid/hid-core.c:2110
 hid_irq_in+0x35e/0x870 drivers/hid/usbhid/hid-core.c:285
 __usb_hcd_giveback_urb+0x389/0x6e0 drivers/usb/core/hcd.c:1650
 usb_hcd_giveback_urb+0x396/0x450 drivers/usb/core/hcd.c:1734
 dummy_timer+0x17c3/0x38d0 drivers/usb/gadget/udc/dummy_hcd.c:1988
 __run_hrtimer kernel/time/hrtimer.c:1691 [inline]
 __hrtimer_run_queues+0x20a/0xae0 kernel/time/hrtimer.c:1755
 hrtimer_run_softirq+0x17d/0x350 kernel/time/hrtimer.c:1772
 handle_softirqs+0x206/0x8d0 kernel/softirq.c:554
 __do_softirq kernel/softirq.c:588 [inline]
 invoke_softirq kernel/softirq.c:428 [inline]
 __irq_exit_rcu kernel/softirq.c:637 [inline]
 irq_exit_rcu+0xac/0x110 kernel/softirq.c:649
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1037 [inline]
 sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1037
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:rcu_read_unlock include/linux/rcupdate.h:878 [inline]
RIP: 0010:count_memcg_events_mm.constprop.0+0x108/0x340 include/linux/memcontrol.h:1046
Code: ba 01 00 00 00 89 de 48 89 ef e8 93 ca 16 00 9c 5b 81 e3 00 02 00 00 31 ff 48 89 de e8 91 5a bb ff 48 85 db 0f 85 06 02 00 00 <e8> 13 58 bb ff e8 5e f7 53 05 31 ff 89 c3 89 c6 e8 43 5a bb ff 85
RSP: 0018:ffffc900019efd58 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff819a88fe
RDX: ffff8881103b57c0 RSI: ffffffff819a8908 RDI: 0000000000000007
RBP: ffff888100ebc000 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000200
R13: ffff888138d01f00 R14: 0000000000000000 R15: ffff8881103b57c0
 count_memcg_event_mm include/linux/memcontrol.h:1052 [inline]
 mm_account_fault mm/memory.c:5928 [inline]
 handle_mm_fault+0x5cc/0xaa0 mm/memory.c:6088
 do_user_addr_fault+0x79f/0x12c0 arch/x86/mm/fault.c:1389
 handle_page_fault arch/x86/mm/fault.c:1481 [inline]
 exc_page_fault+0x5c/0xc0 arch/x86/mm/fault.c:1539
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0010:__put_user_4+0x11/0x20 arch/x86/lib/putuser.S:88
Code: 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 89 cb 48 c1 fb 3f 48 09 d9 0f 01 cb <89> 01 31 c9 0f 01 ca c3 cc cc cc cc 0f 1f 00 90 90 90 90 90 90 90
RSP: 0018:ffffc900019eff10 EFLAGS: 00050202
RAX: 00000000000002be RBX: 0000000000000000 RCX: 00007f9dff6dfa10
RDX: dffffc0000000000 RSI: ffffffff8727f4c0 RDI: ffff8881103b5e08
RBP: 0000000000000000 R08: 0000000000000000 R09: fffffbfff14ac8e1
R10: ffffffff8a56470f R11: 0000000000000000 R12: ffff888116271d40
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 schedule_tail+0xa6/0xd0 kernel/sched/core.c:5257
 ret_from_fork+0x23/0x80 arch/x86/kernel/process.c:143
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
task:kworker/1:6     state:I stack:20784 pid:5979  tgid:5979  ppid:2      flags:0x00004000
Workqueue:  0x0 (events)
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
 __schedule_loop kernel/sched/core.c:6759 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6774
 worker_thread+0x2de/0xf00 kernel/workqueue.c:3406
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
task:kworker/u8:2    state:I stack:23696 pid:11426 tgid:11426 ppid:2      flags:0x00004000
Workqueue:  0x0 (events_unbound)
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
 __schedule_loop kernel/sched/core.c:6759 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6774
 worker_thread+0x2de/0xf00 kernel/workqueue.c:3406
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
task:kworker/0:5     state:I stack:22048 pid:14131 tgid:14131 ppid:2      flags:0x00004000
Workqueue:  0x0 (mm_percpu_wq)
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
 __schedule_loop kernel/sched/core.c:6759 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6774
 worker_thread+0x2de/0xf00 kernel/workqueue.c:3406
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
task:kworker/0:0     state:D
 stack:21744 pid:16814 tgid:16814 ppid:2      flags:0x00004000
Workqueue: usb_hub_wq hub_event

Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
 __schedule_loop kernel/sched/core.c:6759 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6774
 schedule_timeout+0x136/0x2a0 kernel/time/timer.c:2615
 schedule_timeout_uninterruptible kernel/time/timer.c:2649 [inline]
 msleep+0x9b/0xd0 kernel/time/timer.c:2770
 hub_port_debounce+0x183/0x3d0 drivers/usb/core/hub.c:4679
 hub_port_debounce_be_stable drivers/usb/core/hub.h:183 [inline]
 hub_port_connect drivers/usb/core/hub.c:5373 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]
 port_event drivers/usb/core/hub.c:5821 [inline]
 hub_event+0x3536/0x4f40 drivers/usb/core/hub.c:5903
 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3229
 process_scheduled_works kernel/workqueue.c:3310 [inline]
 worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
task:kworker/u8:0    state:I stack:24112 pid:16819 tgid:16819 ppid:2      flags:0x00004000
Workqueue:  0x0
 (events_unbound)
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
 __schedule_loop kernel/sched/core.c:6759 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6774
 worker_thread+0x2de/0xf00 kernel/workqueue.c:3406
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
task:kworker/1:0     state:R  running task     stack:21632 pid:19338 tgid:19338 ppid:2      flags:0x00004000
Workqueue: events dvb_usb_read_remote_control
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
 preempt_schedule_common+0x44/0xc0 kernel/sched/core.c:6861
 </TASK>
task:kworker/0:8     state:R  running task     stack:22144 pid:19575 tgid:19575 ppid:2      flags:0x00004000
Workqueue: usb_hub_wq hub_event
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
 preempt_schedule_common+0x44/0xc0 kernel/sched/core.c:6861
 __cond_resched+0x1b/0x30 kernel/sched/core.c:7199
 might_resched include/linux/kernel.h:73 [inline]
 __mutex_lock_common kernel/locking/mutex.c:585 [inline]
 __mutex_lock+0xe7/0x9c0 kernel/locking/mutex.c:752
 device_lock include/linux/device.h:1014 [inline]
 usb_disconnect+0x10a/0x920 drivers/usb/core/hub.c:2295
 hub_port_connect drivers/usb/core/hub.c:5361 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]
 port_event drivers/usb/core/hub.c:5821 [inline]
 hub_event+0x1bed/0x4f40 drivers/usb/core/hub.c:5903
 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3229
 process_scheduled_works kernel/workqueue.c:3310 [inline]
 worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
task:kworker/1:2     state:I stack:22720 pid:20449 tgid:20449 ppid:2      flags:0x00004000
Workqueue:  0x0 (mm_percpu_wq)
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
 __schedule_loop kernel/sched/core.c:6759 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6774
 worker_thread+0x2de/0xf00 kernel/workqueue.c:3406
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
task:kworker/1:9     state:R
  running task     stack:22736 pid:21049 tgid:21049 ppid:2      flags:0x00004000
Workqueue: events dvb_usb_read_remote_control

Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
 preempt_schedule_common+0x44/0xc0 kernel/sched/core.c:6861
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
 </TASK>
task:syz-executor    state:S stack:24064 pid:24360 tgid:24360 ppid:1      flags:0x00004002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
 __schedule_loop kernel/sched/core.c:6759 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6774
 do_wait+0x1dd/0x570 kernel/exit.c:1697
 kernel_wait4+0x16c/0x280 kernel/exit.c:1851
 zap_pid_ns_processes+0x2e3/0x6a0 kernel/pid_namespace.c:222
 find_child_reaper kernel/exit.c:612 [inline]
 forget_original_parent kernel/exit.c:701 [inline]
 exit_notify kernel/exit.c:738 [inline]
 do_exit+0x2530/0x2ce0 kernel/exit.c:959
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
 get_signal+0x25fb/0x2770 kernel/signal.c:2917
 arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x147/0x260 kernel/entry/common.c:218
 do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f173c2a00a3
RSP: 002b:00007ffc00c87f28 EFLAGS: 00000202
 ORIG_RAX: 00000000000000e6
RAX: fffffffffffffdfc RBX: 0000000000000386 RCX: 00007f173c2a00a3
RDX: 00007ffc00c87f40 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007ffc00c87f9c R08: 000000000007ff1c R09: 00007f173cf64080
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000032
R13: 00000000002cbb38 R14: 00000000002cb9d2 R15: 00007ffc00c87ff0
 </TASK>
task:kworker/0:2     state:D
 stack:22304 pid:25744 tgid:25744 ppid:2      flags:0x00004000
Workqueue: usb_hub_wq hub_event

Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
 __schedule_loop kernel/sched/core.c:6759 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6774
 schedule_timeout+0x136/0x2a0 kernel/time/timer.c:2615
 do_wait_for_common kernel/sched/completion.c:95 [inline]
 __wait_for_common+0x3e1/0x600 kernel/sched/completion.c:116
 usb_start_wait_urb+0x148/0x4c0 drivers/usb/core/message.c:64
 usb_internal_control_msg drivers/usb/core/message.c:103 [inline]
 usb_control_msg+0x327/0x4b0 drivers/usb/core/message.c:154
 __usbnet_read_cmd+0xd8/0x390 drivers/net/usb/usbnet.c:2030
 usbnet_read_cmd+0x94/0xf0 drivers/net/usb/usbnet.c:2088
 mcs7830_get_reg drivers/net/usb/mcs7830.c:113 [inline]
 mcs7830_hif_get_mac_address drivers/net/usb/mcs7830.c:137 [inline]
 mcs7830_bind+0xcb/0x4b0 drivers/net/usb/mcs7830.c:491
 usbnet_probe+0xab7/0x2730 drivers/net/usb/usbnet.c:1761
 usb_probe_interface+0x309/0x9d0 drivers/usb/core/driver.c:399
 call_driver_probe drivers/base/dd.c:579 [inline]
 really_probe+0x23e/0xa90 drivers/base/dd.c:658
 __driver_probe_device+0x1de/0x440 drivers/base/dd.c:800
 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:830
 __device_attach_driver+0x1df/0x310 drivers/base/dd.c:958
 bus_for_each_drv+0x157/0x1e0 drivers/base/bus.c:459
 __device_attach+0x1e8/0x4b0 drivers/base/dd.c:1030
 bus_probe_device+0x17f/0x1c0 drivers/base/bus.c:534
 device_add+0x114b/0x1a70 drivers/base/core.c:3675
 usb_set_configuration+0x10cb/0x1c50 drivers/usb/core/message.c:2210
 usb_generic_driver_probe+0xb1/0x110 drivers/usb/core/generic.c:254
 usb_probe_device+0xec/0x3e0 drivers/usb/core/driver.c:294
 call_driver_probe drivers/base/dd.c:579 [inline]
 really_probe+0x23e/0xa90 drivers/base/dd.c:658
 __driver_probe_device+0x1de/0x440 drivers/base/dd.c:800
 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:830
 __device_attach_driver+0x1df/0x310 drivers/base/dd.c:958
 bus_for_each_drv+0x157/0x1e0 drivers/base/bus.c:459
 __device_attach+0x1e8/0x4b0 drivers/base/dd.c:1030
 bus_probe_device+0x17f/0x1c0 drivers/base/bus.c:534
 device_add+0x114b/0x1a70 drivers/base/core.c:3675
 usb_new_device+0xd90/0x1a10 drivers/usb/core/hub.c:2651
 hub_port_connect drivers/usb/core/hub.c:5521 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]
 port_event drivers/usb/core/hub.c:5821 [inline]
 hub_event+0x2e58/0x4f40 drivers/usb/core/hub.c:5903
 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3229
 process_scheduled_works kernel/workqueue.c:3310 [inline]
 worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
task:kworker/1:8     state:D stack:22352 pid:26474 tgid:26474 ppid:2      flags:0x00004000
Workqueue: usb_hub_wq hub_event

Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
 __schedule_loop kernel/sched/core.c:6759 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6774
 schedule_timeout+0x258/0x2a0 kernel/time/timer.c:2591
 ___down_common+0x2d7/0x460 kernel/locking/semaphore.c:225
 __down_common kernel/locking/semaphore.c:246 [inline]
 __down+0x20/0x30 kernel/locking/semaphore.c:254
 down+0x74/0xa0 kernel/locking/semaphore.c:63
 hid_device_remove+0x29/0x260 drivers/hid/hid-core.c:2749
 device_remove+0xc8/0x170 drivers/base/dd.c:567
 __device_release_driver drivers/base/dd.c:1273 [inline]
 device_release_driver_internal+0x44a/0x610 drivers/base/dd.c:1296
 bus_remove_device+0x22f/0x420 drivers/base/bus.c:576
 device_del+0x396/0x9f0 drivers/base/core.c:3864
 hid_remove_device drivers/hid/hid-core.c:2939 [inline]
 hid_destroy_device+0xe5/0x150 drivers/hid/hid-core.c:2959
 usbhid_disconnect+0xa0/0xe0 drivers/hid/usbhid/hid-core.c:1458
 usb_unbind_interface+0x1e8/0x970 drivers/usb/core/driver.c:461
 device_remove drivers/base/dd.c:569 [inline]
 device_remove+0x122/0x170 drivers/base/dd.c:561
 __device_release_driver drivers/base/dd.c:1273 [inline]
 device_release_driver_internal+0x44a/0x610 drivers/base/dd.c:1296
 bus_remove_device+0x22f/0x420 drivers/base/bus.c:576
 device_del+0x396/0x9f0 drivers/base/core.c:3864
 usb_disable_device+0x36c/0x7f0 drivers/usb/core/message.c:1418
 usb_disconnect+0x2e1/0x920 drivers/usb/core/hub.c:2304
 hub_port_connect drivers/usb/core/hub.c:5361 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]
 port_event drivers/usb/core/hub.c:5821 [inline]
 hub_event+0x1bed/0x4f40 drivers/usb/core/hub.c:5903
 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3229
 process_scheduled_works kernel/workqueue.c:3310 [inline]
 worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
task:kworker/u8:3    state:S stack:24112 pid:27821 tgid:27821 ppid:2      flags:0x00004000
Workqueue: events_unbound call_usermodehelper_exec_work

Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
 __schedule_loop kernel/sched/core.c:6759 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6774
 do_wait+0x1dd/0x570 kernel/exit.c:1697
 kernel_wait+0xa0/0x160 kernel/exit.c:1868
 call_usermodehelper_exec_sync kernel/umh.c:137 [inline]
 call_usermodehelper_exec_work+0xf1/0x170 kernel/umh.c:164
 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3229
 process_scheduled_works kernel/workqueue.c:3310 [inline]
 worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
task:kworker/1:4     state:R  running task    
 stack:23904 pid:30307 tgid:30307 ppid:2      flags:0x00004000
Workqueue: events dvb_usb_read_remote_control
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
 preempt_schedule_common+0x44/0xc0 kernel/sched/core.c:6861
 __cond_resched+0x1b/0x30 kernel/sched/core.c:7199
 _cond_resched include/linux/sched.h:2031 [inline]
 process_one_work+0xbc5/0x1ba0 kernel/workqueue.c:3262
 worker_thread+0x2de/0xf00 kernel/workqueue.c:3406
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
task:kworker/1:7     state:I
 stack:24240 pid:30308 tgid:30308 ppid:2      flags:0x00004000
Workqueue:  0x0
 (events)
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
 __schedule_loop kernel/sched/core.c:6759 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6774
 worker_thread+0x2de/0xf00 kernel/workqueue.c:3406
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
task:syz-executor    state:D stack:24384 pid:31014 tgid:31014 ppid:1      flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
 __schedule_loop kernel/sched/core.c:6759 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6774
 exp_funnel_lock+0x344/0x3b0 kernel/rcu/tree_exp.h:320
 synchronize_rcu_expedited+0x290/0x450 kernel/rcu/tree_exp.h:976
 namespace_unlock+0x1b5/0x490 fs/namespace.c:1703
 drop_collected_mounts fs/namespace.c:2225 [inline]
 put_mnt_ns fs/namespace.c:5553 [inline]
 put_mnt_ns+0xf4/0x130 fs/namespace.c:5549
 free_nsproxy+0x47/0x470 kernel/nsproxy.c:193
 put_nsproxy include/linux/nsproxy.h:118 [inline]
 switch_task_namespaces+0xeb/0x100 kernel/nsproxy.c:251
 do_exit+0xad8/0x2ce0 kernel/exit.c:938
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
 get_signal+0x25fb/0x2770 kernel/signal.c:2917
 arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x147/0x260 kernel/entry/common.c:218
 do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f74b8f44213
RSP: 002b:00007fff7979b758 EFLAGS: 00000202 ORIG_RAX: 000000000000003d
RAX: fffffffffffffe00 RBX: 0000000000000021 RCX: 00007f74b8f44213
RDX: 0000000040000000 RSI: 00007fff7979b78c RDI: 00000000ffffffff
RBP: 00007fff7979b78c R08: 00000000000801d0 R09: 00007f74b9c43080
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000
R13: 0000000000000000 R14: 00000000002cbf2b R15: 00007fff7979b7e0
 </TASK>
task:syz-executor    state:S
 stack:23280 pid:31015 tgid:31015 ppid:1      flags:0x00004002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
 __schedule_loop kernel/sched/core.c:6759 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6774
 do_wait+0x1dd/0x570 kernel/exit.c:1697
 kernel_wait4+0x16c/0x280 kernel/exit.c:1851
 zap_pid_ns_processes+0x2e3/0x6a0 kernel/pid_namespace.c:222
 find_child_reaper kernel/exit.c:612 [inline]
 forget_original_parent kernel/exit.c:701 [inline]
 exit_notify kernel/exit.c:738 [inline]
 do_exit+0x2530/0x2ce0 kernel/exit.c:959
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
 get_signal+0x25fb/0x2770 kernel/signal.c:2917
 arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x147/0x260 kernel/entry/common.c:218
 do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7feb05cc00a3
RSP: 002b:00007ffd705e1c58 EFLAGS: 00000202 ORIG_RAX: 00000000000000e6
RAX: fffffffffffffdfc RBX: 0000000000000036 RCX: 00007feb05cc00a3
RDX: 00007ffd705e1c70 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007ffd705e1ccc R08: 000000000007ff1c R09: 00007feb06983080
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000032
R13: 00000000002cb933 R14: 00000000002cae39 R15: 00007ffd705e1d20
 </TASK>
task:kworker/u8:1    state:S
 stack:26912 pid:31018 tgid:31018 ppid:2      flags:0x00004000
Workqueue: events_unbound call_usermodehelper_exec_work
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
 __schedule_loop kernel/sched/core.c:6759 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6774
 do_wait+0x1dd/0x570 kernel/exit.c:1697
 kernel_wait+0xa0/0x160 kernel/exit.c:1868
 call_usermodehelper_exec_sync kernel/umh.c:137 [inline]
 call_usermodehelper_exec_work+0xf1/0x170 kernel/umh.c:164
 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3229
 process_scheduled_works kernel/workqueue.c:3310 [inline]
 worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
task:syz-executor    state:D stack:24448 pid:31037 tgid:31037 ppid:1      flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
 __schedule_loop kernel/sched/core.c:6759 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6774
 exp_funnel_lock+0x344/0x3b0 kernel/rcu/tree_exp.h:320
 synchronize_rcu_expedited+0x290/0x450 kernel/rcu/tree_exp.h:976
 namespace_unlock+0x1b5/0x490 fs/namespace.c:1703
 drop_collected_mounts fs/namespace.c:2225 [inline]
 put_mnt_ns fs/namespace.c:5553 [inline]
 put_mnt_ns+0xf4/0x130 fs/namespace.c:5549
 free_nsproxy+0x47/0x470 kernel/nsproxy.c:193
 put_nsproxy include/linux/nsproxy.h:118 [inline]
 switch_task_namespaces+0xeb/0x100 kernel/nsproxy.c:251
 do_exit+0xad8/0x2ce0 kernel/exit.c:938
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
 get_signal+0x25fb/0x2770 kernel/signal.c:2917
 arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x147/0x260 kernel/entry/common.c:218
 do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f21fc6e4213
RSP: 002b:00007ffce38034e8 EFLAGS: 00000202
 ORIG_RAX: 000000000000003d
RAX: fffffffffffffe00 RBX: 000000000000002d RCX: 00007f21fc6e4213
RDX: 0000000040000000 RSI: 00007ffce380351c RDI: 00000000ffffffff
RBP: 00007ffce380351c R08: 000000000007ffbc R09: 00007f21fd3df080
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000
R13: 0000000000000000 R14: 00000000002cb1f4 R15: 00007ffce3803570
 </TASK>
task:syz-executor    state:S stack:24784 pid:31039 tgid:31039 ppid:1      flags:0x00004002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
 __schedule_loop kernel/sched/core.c:6759 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6774
 do_wait+0x1dd/0x570 kernel/exit.c:1697
 kernel_wait4+0x16c/0x280 kernel/exit.c:1851
 zap_pid_ns_processes+0x2e3/0x6a0 kernel/pid_namespace.c:222
 find_child_reaper kernel/exit.c:612 [inline]
 forget_original_parent kernel/exit.c:701 [inline]
 exit_notify kernel/exit.c:738 [inline]
 do_exit+0x2530/0x2ce0 kernel/exit.c:959
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
 get_signal+0x25fb/0x2770 kernel/signal.c:2917
 arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x147/0x260 kernel/entry/common.c:218
 do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6d083200a3
RSP: 002b:00007ffd58a10158 EFLAGS: 00000202 ORIG_RAX: 00000000000000e6
RAX: fffffffffffffdfc RBX: 0000000000000025 RCX: 00007f6d083200a3
RDX: 00007ffd58a10170 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007ffd58a101cc R08: 000000000007ff1c R09: 00007f6d08fe2080
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000032
R13: 00000000002cb9e2 R14: 00000000002cb9e2 R15: 00007ffd58a10220
 </TASK>
task:kworker/u8:4    state:I stack:26048 pid:31041 tgid:31041 ppid:2      flags:0x00004000
Workqueue: events_unbound call_usermodehelper_exec_work

Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
 __schedule_loop kernel/sched/core.c:6759 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6774
 do_wait+0x1dd/0x570 kernel/exit.c:1697
 kernel_wait+0xa0/0x160 kernel/exit.c:1868
 call_usermodehelper_exec_sync kernel/umh.c:137 [inline]
 call_usermodehelper_exec_work+0xf1/0x170 kernel/umh.c:164
 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3229
 process_scheduled_works kernel/workqueue.c:3310 [inline]
 worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
task:kworker/u8:5    state:S
 stack:27424 pid:31043 tgid:31043 ppid:2      flags:0x00004000
Workqueue: events_unbound call_usermodehelper_exec_work

Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
 __schedule_loop kernel/sched/core.c:6759 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6774
 do_wait+0x1dd/0x570 kernel/exit.c:1697
 kernel_wait+0xa0/0x160 kernel/exit.c:1868
 call_usermodehelper_exec_sync kernel/umh.c:137 [inline]
 call_usermodehelper_exec_work+0xf1/0x170 kernel/umh.c:164
 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3229
 process_scheduled_works kernel/workqueue.c:3310 [inline]
 worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
task:kworker/u8:6    state:I stack:27360 pid:31051 tgid:31051 ppid:2      flags:0x00004000
Workqueue:  0x0
 (events_unbound)
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
 __schedule_loop kernel/sched/core.c:6759 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6774
 worker_thread+0x2de/0xf00 kernel/workqueue.c:3406
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
task:kworker/0:3     state:I stack:30928 pid:639   tgid:639   ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
 __schedule_loop kernel/sched/core.c:6759 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6774
 worker_thread+0x2de/0xf00 kernel/workqueue.c:3406
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
task:syz.4.5978      state:D
 stack:28288 pid:691   tgid:690   ppid:31015  flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
 __schedule_loop kernel/sched/core.c:6759 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6774
 exp_funnel_lock+0x344/0x3b0 kernel/rcu/tree_exp.h:320
 synchronize_rcu_expedited+0x290/0x450 kernel/rcu/tree_exp.h:976
 module_remove_driver+0x2e/0x260 drivers/base/module.c:106
 bus_remove_driver+0x143/0x2c0 drivers/base/bus.c:745
 driver_unregister+0x76/0xb0 drivers/base/driver.c:274
 usb_gadget_unregister_driver+0x49/0x70 drivers/usb/gadget/udc/core.c:1732
 raw_release+0x1ae/0x2b0 drivers/usb/gadget/legacy/raw_gadget.c:462
 __fput+0x3f6/0xb60 fs/file_table.c:431
 task_work_run+0x14e/0x250 kernel/task_work.c:228
 get_signal+0x1ca/0x2770 kernel/signal.c:2690
 arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x147/0x260 kernel/entry/common.c:218
 do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7feb05c8dbfb
RSP: 002b:00007feb04905f70 EFLAGS: 00000246
 ORIG_RAX: 0000000000000010
RAX: fffffffffffffffc RBX: 00000000ffffff75 RCX: 00007feb05c8dbfb
RDX: 00007feb04905ff0 RSI: 0000000040085507 RDI: 0000000000000003
RBP: 0000000000000003 R08: 00007feb05f70320 R09: 0000000000000000
R10: 0000000000000003 R11: 0000000000000246 R12: 00000000200002c0
R13: 0000000000000000 R14: 00007feb05e45f80 R15: 00007ffd705e1908
 </TASK>
task:syz.4.5978      state:D stack:28992 pid:700   tgid:690   ppid:31015  flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
 __schedule_loop kernel/sched/core.c:6759 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6774
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6831
 __mutex_lock_common kernel/locking/mutex.c:684 [inline]
 __mutex_lock+0x5b8/0x9c0 kernel/locking/mutex.c:752
 exp_funnel_lock+0x1a4/0x3b0 kernel/rcu/tree_exp.h:329
 synchronize_rcu_expedited+0x290/0x450 kernel/rcu/tree_exp.h:976
 module_remove_driver+0x2e/0x260 drivers/base/module.c:106
 bus_remove_driver+0x143/0x2c0 drivers/base/bus.c:745
 driver_unregister+0x76/0xb0 drivers/base/driver.c:274
 usb_gadget_register_driver_owner+0x20f/0x330 drivers/usb/gadget/udc/core.c:1722
 raw_ioctl_run drivers/usb/gadget/legacy/raw_gadget.c:595 [inline]
 raw_ioctl+0x1731/0x2b90 drivers/usb/gadget/legacy/raw_gadget.c:1306
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:907 [inline]
 __se_sys_ioctl fs/ioctl.c:893 [inline]
 __x64_sys_ioctl+0x18f/0x220 fs/ioctl.c:893