INFO: task udevd:6370 blocked for more than 143 seconds.
      Not tainted 6.10.0-rc6-syzkaller-00116-ge60284b63245 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:udevd           state:D stack:27488 pid:6370  tgid:6370  ppid:2400   flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xcda/0x31b0 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6837
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6894
 __mutex_lock_common kernel/locking/mutex.c:684 [inline]
 __mutex_lock+0x5b8/0x9c0 kernel/locking/mutex.c:752
 device_lock include/linux/device.h:1009 [inline]
 uevent_show+0x188/0x3b0 drivers/base/core.c:2743
 dev_attr_show+0x53/0xe0 drivers/base/core.c:2437
 sysfs_kf_seq_show+0x23e/0x410 fs/sysfs/file.c:59
 seq_read_iter+0x4fa/0x12c0 fs/seq_file.c:230
 kernfs_fop_read_iter+0x41a/0x590 fs/kernfs/file.c:279
 new_sync_read fs/read_write.c:395 [inline]
 vfs_read+0x869/0xbd0 fs/read_write.c:476
 ksys_read+0x12f/0x260 fs/read_write.c:619
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f78c6d36b6a
RSP: 002b:00007ffcc7ec1b98 EFLAGS: 00000246
 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 000056208cd70570 RCX: 00007f78c6d36b6a
RDX: 0000000000001000 RSI: 000056208cd6c930 RDI: 0000000000000008
RBP: 000056208cd70570 R08: 0000000000000008 R09: 0000000000000020
R10: 000000000000010f R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000003fff R14: 00007ffcc7ec2078 R15: 000000000000000a
 </TASK>
INFO: task udevd:6372 blocked for more than 143 seconds.
      Not tainted 6.10.0-rc6-syzkaller-00116-ge60284b63245 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:udevd           state:D
 stack:27472 pid:6372  tgid:6372  ppid:2400   flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xcda/0x31b0 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6837
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6894
 __mutex_lock_common kernel/locking/mutex.c:684 [inline]
 __mutex_lock+0x5b8/0x9c0 kernel/locking/mutex.c:752
 device_lock include/linux/device.h:1009 [inline]
 uevent_show+0x188/0x3b0 drivers/base/core.c:2743
 dev_attr_show+0x53/0xe0 drivers/base/core.c:2437
 sysfs_kf_seq_show+0x23e/0x410 fs/sysfs/file.c:59
 seq_read_iter+0x4fa/0x12c0 fs/seq_file.c:230
 kernfs_fop_read_iter+0x41a/0x590 fs/kernfs/file.c:279
 new_sync_read fs/read_write.c:395 [inline]
 vfs_read+0x869/0xbd0 fs/read_write.c:476
 ksys_read+0x12f/0x260 fs/read_write.c:619
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f78c6d36b6a
RSP: 002b:00007ffcc7ec1b98 EFLAGS: 00000246
 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 000056208cd70570 RCX: 00007f78c6d36b6a
RDX: 0000000000001000 RSI: 000056208cd6c930 RDI: 0000000000000008
RBP: 000056208cd70570 R08: 0000000000000008 R09: 0000000000000008
R10: 000000000000010f R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000003fff R14: 00007ffcc7ec2078 R15: 000000000000000a
 </TASK>
INFO: task udevd:6374 blocked for more than 145 seconds.
      Not tainted 6.10.0-rc6-syzkaller-00116-ge60284b63245 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:udevd           state:D
 stack:28064 pid:6374  tgid:6374  ppid:2400   flags:0x00004002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xcda/0x31b0 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6837
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6894
 __mutex_lock_common kernel/locking/mutex.c:684 [inline]
 __mutex_lock+0x5b8/0x9c0 kernel/locking/mutex.c:752
 device_lock include/linux/device.h:1009 [inline]
 uevent_show+0x188/0x3b0 drivers/base/core.c:2743
 dev_attr_show+0x53/0xe0 drivers/base/core.c:2437
 sysfs_kf_seq_show+0x23e/0x410 fs/sysfs/file.c:59
 seq_read_iter+0x4fa/0x12c0 fs/seq_file.c:230
 kernfs_fop_read_iter+0x41a/0x590 fs/kernfs/file.c:279
 new_sync_read fs/read_write.c:395 [inline]
 vfs_read+0x869/0xbd0 fs/read_write.c:476
 ksys_read+0x12f/0x260 fs/read_write.c:619
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f78c6d36b6a
RSP: 002b:00007ffcc7ec1b98 EFLAGS: 00000246
 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 000056208cd70570 RCX: 00007f78c6d36b6a
RDX: 0000000000001000 RSI: 000056208cd6c930 RDI: 0000000000000008
RBP: 000056208cd70570 R08: 0000000000000008 R09: 0000000000000000
R10: 000000000000010f R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000003fff R14: 00007ffcc7ec2078 R15: 000000000000000a
 </TASK>

Showing all locks held in the system:
6 locks held by kworker/0:1/9:
 #0: 
ffff888104ef4948 (
(wq_completion)usb_hub_wq
){+.+.}-{0:0}
, at: process_one_work+0x1277/0x1b40 kernel/workqueue.c:3223
 #1: ffffc9000009fd80
 (
(work_completion)(&hub->events)
){+.+.}-{0:0}
, at: process_one_work+0x921/0x1b40 kernel/workqueue.c:3224
 #2: 
ffff888109b02190 (
&dev->mutex
){....}-{3:3}
, at: device_lock include/linux/device.h:1009 [inline]
, at: hub_event+0x1be/0x4f50 drivers/usb/core/hub.c:5849
 #3: 
ffff888109bc6190
 (
&dev->mutex
){....}-{3:3}
, at: device_lock include/linux/device.h:1009 [inline]
, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1003
 #4: 
ffff888119dab160
 (
&dev->mutex){....}-{3:3}
, at: device_lock include/linux/device.h:1009 [inline]
, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1003
 #5: 
ffffffff892f2f28 (
input_mutex
){+.+.}-{3:3}
, at: input_register_device+0xa2b/0x1140 drivers/input/input.c:2463
1 lock held by khungtaskd/30:
 #0: 
ffffffff886b4360 (
rcu_read_lock){....}-{1:2}
, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
, at: rcu_read_lock include/linux/rcupdate.h:781 [inline]
, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6614
9 locks held by kworker/1:1/42:
6 locks held by kworker/0:2/650:
 #0: 
ffff888104ef4948
 ((wq_completion)usb_hub_wq
){+.+.}-{0:0}
, at: process_one_work+0x1277/0x1b40 kernel/workqueue.c:3223
 #1: ffffc900019bfd80
 ((work_completion)(&hub->events)
){+.+.}-{0:0}
, at: process_one_work+0x921/0x1b40 kernel/workqueue.c:3224
 #2: ffff8881097ea190
 (
&dev->mutex
){....}-{3:3}
, at: device_lock include/linux/device.h:1009 [inline]
, at: hub_event+0x1be/0x4f50 drivers/usb/core/hub.c:5849
 #3: 
ffff888120ce7190
 (&dev->mutex
){....}-{3:3}
, at: device_lock include/linux/device.h:1009 [inline]
, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1003
 #4: ffff888119dac160
 (
&dev->mutex
){....}-{3:3}
, at: device_lock include/linux/device.h:1009 [inline]
, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1003
 #5: 
ffffffff892f2f28
 (input_mutex
){+.+.}-{3:3}
, at: input_register_device+0xa2b/0x1140 drivers/input/input.c:2463
3 locks held by kworker/1:2/727:
3 locks held by acpid/2385:
 #0: 
ffff888111f6d110
 (&evdev->mutex
){+.+.}-{3:3}
, at: evdev_close_device drivers/input/evdev.c:411 [inline]
, at: evdev_release+0x29f/0x400 drivers/input/evdev.c:456
 #1: 
ffff888111e4e2c0 (
&dev->mutex
#2
){+.+.}-{3:3}
, at: input_close_device+0x46/0x200 drivers/input/input.c:704
 #2: 
ffffffff886bfaf8 (
rcu_state.exp_mutex){+.+.}-{3:3}
, at: exp_funnel_lock+0x282/0x3b0 kernel/rcu/tree_exp.h:291
2 locks held by getty/2458:
 #0: ffff88810ef4b0a0
 (
&tty->ldisc_sem
){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
 #1: 
ffffc900000432f0
 (
&ldata->atomic_read_lock){+.+.}-{3:3}
, at: n_tty_read+0xfc8/0x1490 drivers/tty/n_tty.c:2211
4 locks held by udevd/6370:
4 locks held by udevd/6372:
 #0: 
ffff88811b0409e0
 (
&p->lock){+.+.}-{3:3}
, at: seq_read_iter+0xde/0x12c0 fs/seq_file.c:182
 #1: 
ffff888109f45c88 (
&of->mutex
#2
){+.+.}-{3:3}
, at: kernfs_seq_start+0x4d/0x240 fs/kernfs/file.c:154
 #2: ffff88811037f008
 (
kn->active#3){.+.+}-{0:0}
, at: kernfs_seq_start+0x71/0x240 fs/kernfs/file.c:155
 #3: 
ffff888109bc6190 (&dev->mutex){....}-{3:3}
, at: device_lock include/linux/device.h:1009 [inline]
, at: uevent_show+0x188/0x3b0 drivers/base/core.c:2743
4 locks held by udevd/6374:
 #0: ffff88811b040b08
 (&p->lock){+.+.}-{3:3}, at: seq_read_iter+0xde/0x12c0 fs/seq_file.c:182
 #1: ffff888115896488 (&of->mutex
#2){+.+.}-{3:3}
, at: kernfs_seq_start+0x4d/0x240 fs/kernfs/file.c:154
 #2: ffff888112bf31e8 (
kn->active#3){.+.+}-{0:0}, at: kernfs_seq_start+0x71/0x240 fs/kernfs/file.c:155
 #3: ffff888120ce7190 (&dev->mutex){....}-{3:3}
, at: device_lock include/linux/device.h:1009 [inline]
, at: uevent_show+0x188/0x3b0 drivers/base/core.c:2743
6 locks held by kworker/1:3/6398:
4 locks held by udevd/6885:
 #0: 
ffff888115a132f0 (
&p->lock){+.+.}-{3:3}, at: seq_read_iter+0xde/0x12c0 fs/seq_file.c:182
 #1: ffff88811ceea888
 (
&of->mutex#2
){+.+.}-{3:3}, at: kernfs_seq_start+0x4d/0x240 fs/kernfs/file.c:154
 #2: ffff88810b7d2e18 (
kn->active#3){.+.+}-{0:0}
, at: kernfs_seq_start+0x71/0x240 fs/kernfs/file.c:155
 #3: 
ffff888111f6c190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1009 [inline]
ffff888111f6c190 (&dev->mutex){....}-{3:3}, at: uevent_show+0x188/0x3b0 drivers/base/core.c:2743

=============================================

NMI backtrace for cpu 0
CPU: 0 PID: 30 Comm: khungtaskd Not tainted 6.10.0-rc6-syzkaller-00116-ge60284b63245 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:114
 nmi_cpu_backtrace+0x27b/0x390 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x29c/0x300 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
 watchdog+0xf86/0x1240 kernel/hung_task.c:379
 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>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.10.0-rc6-syzkaller-00116-ge60284b63245 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
RIP: 0010:hlock_class+0x56/0x130 kernel/locking/lockdep.c:228
Code: 20 66 81 e3 ff 1f 0f b7 db be 08 00 00 00 48 89 d8 48 c1 e8 06 48 8d 3c c5 e0 4c cd 8c e8 c2 44 77 00 48 0f a3 1d 5a c8 9c 0b <73> 13 48 69 c3 c8 00 00 00 5b 48 05 00 51 cd 8c c3 cc cc cc cc 48
RSP: 0018:ffffc900001b8990 EFLAGS: 00000047
RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffff8130847e
RDX: fffffbfff199a99d RSI: 0000000000000008 RDI: ffffffff8ccd4ce0
RBP: ffffc900001b8ad8 R08: 0000000000000000 R09: fffffbfff199a99c
R10: ffffffff8ccd4ce7 R11: 0000000000000001 R12: ffff888101aed700
R13: 0000000000000001 R14: 0000000000000000 R15: 1ffff9200003713a
FS:  0000000000000000(0000) GS:ffff8881f6500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f497e474070 CR3: 000000011e6b0000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 mark_lock+0xb5/0xc60 kernel/locking/lockdep.c:4656
 mark_usage kernel/locking/lockdep.c:4564 [inline]
 __lock_acquire+0x1359/0x3b30 kernel/locking/lockdep.c:5091
 lock_acquire kernel/locking/lockdep.c:5754 [inline]
 lock_acquire+0x1b1/0x560 kernel/locking/lockdep.c:5719
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:162
 debug_object_deactivate+0x13c/0x370 lib/debugobjects.c:763
 debug_hrtimer_deactivate kernel/time/hrtimer.c:428 [inline]
 debug_deactivate kernel/time/hrtimer.c:484 [inline]
 __run_hrtimer kernel/time/hrtimer.c:1657 [inline]
 __hrtimer_run_queues+0x47d/0xcc0 kernel/time/hrtimer.c:1753
 hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1815
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
 __sysvec_apic_timer_interrupt+0x10f/0x450 arch/x86/kernel/apic/apic.c:1049
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
 sysvec_apic_timer_interrupt+0x8b/0xb0 arch/x86/kernel/apic/apic.c:1043
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:native_irq_disable arch/x86/include/asm/irqflags.h:37 [inline]
RIP: 0010:arch_local_irq_disable arch/x86/include/asm/irqflags.h:72 [inline]
RIP: 0010:acpi_safe_halt+0x1a/0x20 drivers/acpi/processor_idle.c:113
Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 65 48 8b 05 f8 20 6f 79 48 8b 00 a8 08 75 0c 66 90 0f 00 2d 08 84 5b 00 fb f4 <fa> c3 cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc9000014fd58 EFLAGS: 00000246
RAX: 0000000000004000 RBX: 0000000000000001 RCX: ffffffff869487e9
RDX: 0000000000000001 RSI: ffff8881032e2800 RDI: ffff8881032e2864
RBP: ffff8881032e2864 R08: 0000000000000001 R09: ffffed103eca6f9d
R10: ffff8881f6537ceb R11: 0000000000000000 R12: ffff88810b2ec000
R13: ffffffff88b30920 R14: 0000000000000001 R15: 0000000000000000
 acpi_idle_enter+0xc5/0x160 drivers/acpi/processor_idle.c:707
 cpuidle_enter_state+0x85/0x500 drivers/cpuidle/cpuidle.c:267
 cpuidle_enter+0x4e/0xa0 drivers/cpuidle/cpuidle.c:388
 cpuidle_idle_call kernel/sched/idle.c:236 [inline]
 do_idle+0x313/0x3f0 kernel/sched/idle.c:332
 cpu_startup_entry+0x4f/0x60 kernel/sched/idle.c:430
 start_secondary+0x220/0x2b0 arch/x86/kernel/smpboot.c:313
 common_startup_64+0x12c/0x138
 </TASK>