INFO: task udevd:4287 blocked for more than 143 seconds.
      Not tainted 6.1.131-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:udevd           state:D stack:0     pid:4287  ppid:3913   flags:0x00000004
Call trace:
 __switch_to+0x308/0x598 arch/arm64/kernel/process.c:553
 context_switch kernel/sched/core.c:5243 [inline]
 __schedule+0xef4/0x1d44 kernel/sched/core.c:6560
 schedule+0xc4/0x170 kernel/sched/core.c:6636
 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6695
 __mutex_lock_common+0xbd8/0x21a0 kernel/locking/mutex.c:679
 __mutex_lock kernel/locking/mutex.c:747 [inline]
 mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799
 device_lock include/linux/device.h:837 [inline]
 uevent_show+0x178/0x338 drivers/base/core.c:2669
 dev_attr_show+0x60/0xcc drivers/base/core.c:2372
 sysfs_kf_seq_show+0x2d0/0x43c fs/sysfs/file.c:59
 kernfs_seq_show+0x150/0x1fc fs/kernfs/file.c:205
 seq_read_iter+0x3e0/0xc44 fs/seq_file.c:230
 kernfs_fop_read_iter+0x144/0x5c8 fs/kernfs/file.c:279
 call_read_iter include/linux/fs.h:2259 [inline]
 new_sync_read fs/read_write.c:389 [inline]
 vfs_read+0x5bc/0x8b4 fs/read_write.c:470
 ksys_read+0x15c/0x26c fs/read_write.c:613
 __do_sys_read fs/read_write.c:623 [inline]
 __se_sys_read fs/read_write.c:621 [inline]
 __arm64_sys_read+0x7c/0x90 fs/read_write.c:621
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585

Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
 #0: ffff800015cd79b0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x44/0xcf4 kernel/rcu/tasks.h:517
1 lock held by rcu_tasks_trace/13:
 #0: ffff800015cd81b0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x44/0xcf4 kernel/rcu/tasks.h:517
1 lock held by khungtaskd/28:
 #0: ffff800015cd77e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:349
3 locks held by kworker/u4:4/181:
2 locks held by getty/4051:
 #0: ffff0000d6599098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340
 #1: ffff80001d9002f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x414/0x1214 drivers/tty/n_tty.c:2198
4 locks held by udevd/4287:
 #0: ffff0000f2f448b8 (&p->lock){+.+.}-{3:3}, at: seq_read_iter+0xac/0xc44 fs/seq_file.c:182
 #1: ffff0000f3137c88 (&of->mutex){+.+.}-{3:3}, at: kernfs_seq_start+0x58/0x384 fs/kernfs/file.c:154
 #2: ffff0000f292ce88 (kn->active#4){.+.+}-{0:0}, at: kernfs_seq_start+0x74/0x384 fs/kernfs/file.c:155
 #3: ffff0000cd0e4190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:837 [inline]
 #3: ffff0000cd0e4190 (&dev->mutex){....}-{3:3}, at: uevent_show+0x178/0x338 drivers/base/core.c:2669
6 locks held by kworker/1:9/4352:
 #0: ffff0000c46a9138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x6bc/0x1484 kernel/workqueue.c:2265
 #1: ffff800021587c20 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x6fc/0x1484 kernel/workqueue.c:2267
 #2: ffff0000d19b0190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:837 [inline]
 #2: ffff0000d19b0190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1b0/0x42e4 drivers/usb/core/hub.c:5813
 #3: ffff0000cd0e4190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:837 [inline]
 #3: ffff0000cd0e4190 (&dev->mutex){....}-{3:3}, at: __device_attach+0x90/0x480 drivers/base/dd.c:990
 #4: ffff0000f2fa2118 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:837 [inline]
 #4: ffff0000f2fa2118 (&dev->mutex){....}-{3:3}, at: __device_attach+0x90/0x480 drivers/base/dd.c:990
 #5: ffff800015b86530 (umhelper_sem){++++}-{3:3}, at: usermodehelper_read_trylock+0x12c/0x2d0 kernel/umh.c:218
1 lock held by syz.2.1325/8586:
 #0: ffff0000d19b0190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:837 [inline]
 #0: ffff0000d19b0190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x13c/0x6c0 drivers/usb/core/devio.c:1052
1 lock held by syz.4.1360/8749:
2 locks held by syz.4.1360/8755:
2 locks held by syz.1.1370/8781:

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