INFO: task udevd:5208 blocked for more than 143 seconds.
      Not tainted 6.12.0-rc6-syzkaller-00153-g237d4e0f4113 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:udevd           state:D stack:24064 pid:5208  tgid:5208  ppid:2862   flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5328 [inline]
 __schedule+0x1042/0x34b0 kernel/sched/core.c:6690
 __schedule_loop kernel/sched/core.c:6767 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6782
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6839
 __mutex_lock_common kernel/locking/mutex.c:684 [inline]
 __mutex_lock+0x5b8/0x9c0 kernel/locking/mutex.c:752
 device_lock include/linux/device.h:1014 [inline]
 uevent_show+0x188/0x3b0 drivers/base/core.c:2736
 dev_attr_show+0x53/0xe0 drivers/base/core.c:2430
 sysfs_kf_seq_show+0x23e/0x410 fs/sysfs/file.c:59
 seq_read_iter+0x4f4/0x12b0 fs/seq_file.c:230
 kernfs_fop_read_iter+0x414/0x580 fs/kernfs/file.c:279
 new_sync_read fs/read_write.c:488 [inline]
 vfs_read+0x87f/0xbe0 fs/read_write.c:569
 ksys_read+0x12f/0x260 fs/read_write.c:712
 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: 0033:0x7fe73f975b6a
RSP: 002b:00007ffd0266e0d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00005573479bd4e0 RCX: 00007fe73f975b6a
RDX: 0000000000001000 RSI: 0000557347a1d0e0 RDI: 0000000000000008
RBP: 00005573479bd4e0 R08: 0000000000000008 R09: 0000000000000000
R10: 000000000000010f R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000003fff R14: 00007ffd0266e5b8 R15: 000000000000000a
 </TASK>

Showing all locks held in the system:
7 locks held by kworker/0:1/9:
5 locks held by kworker/1:0/24:
 #0: 
ffff888105ef6d48
 ((wq_completion)usb_hub_wq
){+.+.}-{0:0}
, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
 #1: 
ffffc9000019fd80
 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
 #2: 
ffff88810af0d190
 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
 (&dev->mutex){....}-{3:3}, at: hub_event+0x1be/0x4f40 drivers/usb/core/hub.c:5849
 #3: 
ffff88810ab93508 (&port_dev->status_lock
){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3206 [inline]
){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5418 [inline]
){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]
){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5821 [inline]
){+.+.}-{3:3}, at: hub_event+0x28aa/0x4f40 drivers/usb/core/hub.c:5903
 #4: ffff888108f89168 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5419 [inline]
 #4: ffff888108f89168 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]
 #4: ffff888108f89168 (hcd->address0_mutex){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5821 [inline]
 #4: ffff888108f89168 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_event+0x28d0/0x4f40 drivers/usb/core/hub.c:5903
1 lock held by khungtaskd/30:
 #0: ffffffff88ebb140 (rcu_read_lock){....}-{1:2}
, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
, at: debug_show_all_locks+0x7f/0x390 kernel/locking/lockdep.c:6720
5 locks held by kworker/0:2/1124:
 #0: ffff888105ef6d48 ((wq_completion)usb_hub_wq){+.+.}-{0:0}
, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
 #1: 
ffffc90001effd80 ((work_completion)(&hub->events)){+.+.}-{0:0}
, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
 #2: ffff88810abf0190
 (&dev->mutex){....}-{3:3}
, at: device_lock include/linux/device.h:1014 [inline]
, at: hub_event+0x1be/0x4f40 drivers/usb/core/hub.c:5849
 #3: 
ffff88811a93d190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
ffff88811a93d190 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1005
 #4: ffff888106777160 (&dev->mutex){....}-{3:3}
, at: device_lock include/linux/device.h:1014 [inline]
, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1005
2 locks held by getty/2920:
 #0: ffff8881121ba0a0
 (&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+0xfba/0x1480 drivers/tty/n_tty.c:2211
4 locks held by udevd/5208:
 #0: ffff88810df85e80
 (&p->lock){+.+.}-{3:3}, at: seq_read_iter+0xd8/0x12b0 fs/seq_file.c:182
 #1: 
ffff88811adc1488 (&of->mutex#2
){+.+.}-{3:3}, at: kernfs_seq_start+0x4d/0x240 fs/kernfs/file.c:154
 #2: ffff88811ccd5698
 (kn->active#3
){++++}-{0:0}
, at: kernfs_seq_start+0x71/0x240 fs/kernfs/file.c:155
 #3: 
ffff888112af8190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
ffff888112af8190 (&dev->mutex){....}-{3:3}, at: uevent_show+0x188/0x3b0 drivers/base/core.c:2736
4 locks held by udevd/5249:
 #0: ffff88811a2a3540
 (&p->lock
){+.+.}-{3:3}
, at: raw_spin_rq_lock_nested kernel/sched/core.c:598 [inline]
, at: raw_spin_rq_lock kernel/sched/sched.h:1505 [inline]
, at: rq_lock kernel/sched/sched.h:1804 [inline]
, at: __schedule+0x293/0x34b0 kernel/sched/core.c:6589
 #1: ffff888106785d58 (&ep->lock){....}-{2:2}
, at: debug_object_activate+0x199/0x540 lib/debugobjects.c:708
 #2: ffffffff8905a5e0 (mmu_notifier_invalidate_range_start){+.+.}-{0:0}
, at: fs_reclaim_acquire mm/page_alloc.c:3851 [inline]
, at: fs_reclaim_acquire+0xae/0x150 mm/page_alloc.c:3842
 #3: ffffffff88ebb140 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
 #3: ffffffff88ebb140 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #3: ffffffff88ebb140 (rcu_read_lock){....}-{1:2}, at: page_ext_get+0x34/0x310 mm/page_ext.c:525
6 locks held by kworker/0:4/5259:
4 locks held by udevd/9849:
 #0: 
ffff8881012ffb08 (&p->lock){+.+.}-{3:3}, at: seq_read_iter+0xd8/0x12b0 fs/seq_file.c:182
 #1: ffff888119319888 (&of->mutex#2){+.+.}-{3:3}, at: kernfs_seq_start+0x4d/0x240 fs/kernfs/file.c:154
 #2: ffff8881087bd788 (kn->active#3){++++}-{0:0}, at: kernfs_seq_start+0x71/0x240 fs/kernfs/file.c:155
 #3: ffff88810abf0190 (&dev->mutex){....}-{3:3}
, at: device_lock include/linux/device.h:1014 [inline]
, at: uevent_show+0x188/0x3b0 drivers/base/core.c:2736

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

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.12.0-rc6-syzkaller-00153-g237d4e0f4113 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
 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+0xf0c/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 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 9909 Comm: syz.3.1394 Not tainted 6.12.0-rc6-syzkaller-00153-g237d4e0f4113 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
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 a0 cd aa 8f e8 72 11 7c 00 48 0f a3 1d da 5a 78 0e <73> 13 48 69 c3 c8 00 00 00 5b 48 05 c0 d1 aa 8f c3 cc cc cc cc 48
RSP: 0018:ffffc90000007bf0 EFLAGS: 00000047
RAX: 0000000000000001 RBX: 000000000000004f RCX: ffffffff813272be
RDX: fffffbfff1f559b6 RSI: 0000000000000008 RDI: ffffffff8faacda8
RBP: 0000000000000001 R08: 0000000000000000 R09: fffffbfff1f559b5
R10: ffffffff8faacdaf R11: 0000000000000002 R12: 0000000000000000
R13: ffff8881150de280 R14: 000000000000004f R15: ffff8881150dd7c0
FS:  00007f72e6b876c0(0000) GS:ffff8881f5800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f72e81f2000 CR3: 000000011aefc000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 check_wait_context kernel/locking/lockdep.c:4827 [inline]
 __lock_acquire+0x453/0x3ce0 kernel/locking/lockdep.c:5152
 lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5825
 seqcount_lockdep_reader_access include/linux/seqlock.h:72 [inline]
 timekeeping_debug_get_ns+0x86/0x5b0 kernel/time/timekeeping.c:256
 timekeeping_get_ns kernel/time/timekeeping.c:401 [inline]
 ktime_get+0xd9/0x1a0 kernel/time/timekeeping.c:850
 clockevents_program_event+0x155/0x380 kernel/time/clockevents.c:326
 tick_program_event+0xa9/0x140 kernel/time/tick-oneshot.c:44
 hrtimer_interrupt+0x36d/0x800 kernel/time/hrtimer.c:1830
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
 __sysvec_apic_timer_interrupt+0x10f/0x400 arch/x86/kernel/apic/apic.c:1055
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
 sysvec_apic_timer_interrupt+0x8b/0xb0 arch/x86/kernel/apic/apic.c:1049
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:console_trylock_spinning kernel/printk/printk.c:2042 [inline]
RIP: 0010:vprintk_emit+0x621/0x6f0 kernel/printk/printk.c:2406
Code: 85 ed 0f 85 81 00 00 00 e8 0c 94 1f 00 9c 41 5c 41 81 e4 00 02 00 00 31 ff 4c 89 e6 e8 68 96 1f 00 4d 85 e4 0f 85 8d 00 00 00 <e8> ea 93 1f 00 45 31 c9 41 b8 01 00 00 00 31 c9 48 8d 05 00 00 00
RSP: 0018:ffffc900108c7c48 EFLAGS: 00000283
RAX: 00000000000065f1 RBX: 0000000000000045 RCX: ffffc90002ad3000
RDX: 0000000000040000 RSI: ffffffff81365fa8 RDI: 0000000000000007
RBP: 1ffff92002118f8b R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000200 R14: ffff88810228d7c0 R15: ffffc900108c7d30
 vprintk+0x7f/0xa0 kernel/printk/printk_safe.c:68
 _printk+0xc8/0x100 kernel/printk/printk.c:2432
 usb_gadget_register_driver_owner+0x1fb/0x330 drivers/usb/gadget/udc/core.c:1710
 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
 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: 0033:0x7f72e7f0e31b
Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60 c7 04 24 10 00 00 00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1c 48 8b 44 24 18 64 48 2b 04 25 28 00 00
RSP: 002b:00007f72e6b84f10 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 00007f72e7f0e31b
RDX: 0000000000000000 RSI: 0000000000005501 RDI: 0000000000000006
RBP: 00007f72e6b85fe0 R08: 0000000000000000 R09: 00332e6364755f79
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f72e6b84fb0 R14: 0000000020000bc0 R15: 00007f72e81f1c58
 </TASK>