INFO: task udevd:6058 blocked for more than 144 seconds.
      Not tainted 6.14.0-rc5-syzkaller-g77c95b8c7a16 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:udevd           state:D stack:0     pid:6058  tgid:6058  ppid:1      task_flags:0x400140 flags:0x00000004
Call trace:
 __switch_to+0x414/0x788 arch/arm64/kernel/process.c:701 (T)
 context_switch kernel/sched/core.c:5378 [inline]
 __schedule+0x1360/0x257c kernel/sched/core.c:6765
 __schedule_loop kernel/sched/core.c:6842 [inline]
 schedule+0xbc/0x238 kernel/sched/core.c:6857
 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6914
 __mutex_lock_common+0xd30/0x24b8 kernel/locking/mutex.c:662
 __mutex_lock kernel/locking/mutex.c:730 [inline]
 mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:782
 device_lock include/linux/device.h:1030 [inline]
 uevent_show+0x178/0x338 drivers/base/core.c:2729
 dev_attr_show+0x60/0xcc drivers/base/core.c:2423
 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
 new_sync_read fs/read_write.c:484 [inline]
 vfs_read+0x698/0x974 fs/read_write.c:565
 ksys_read+0x15c/0x26c fs/read_write.c:708
 __do_sys_read fs/read_write.c:717 [inline]
 __se_sys_read fs/read_write.c:715 [inline]
 __arm64_sys_read+0x7c/0x90 fs/read_write.c:715
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:744
 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600

Showing all locks held in the system:
3 locks held by kworker/u8:1/13:
1 lock held by khungtaskd/31:
 #0: ffff80008fda22e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:336
4 locks held by kworker/u8:9/2205:
1 lock held by klogd/6047:
4 locks held by udevd/6058:
 #0: ffff0000d16b8418 (&p->lock){+.+.}-{4:4}, at: seq_read_iter+0xac/0xc44 fs/seq_file.c:182
 #1: ffff0000cbe3b488 (&of->mutex#2){+.+.}-{4:4}, at: kernfs_seq_start+0x58/0x384 fs/kernfs/file.c:154
 #2: ffff0000ca1add28 (kn->active#4){++++}-{0:0}, at: kernfs_seq_start+0x74/0x384 fs/kernfs/file.c:155
 #3: ffff0000cac840e8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1030 [inline]
 #3: ffff0000cac840e8 (&dev->mutex){....}-{4:4}, at: uevent_show+0x178/0x338 drivers/base/core.c:2729
2 locks held by getty/6201:
 #0: ffff0000d32350a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340
 #1: ffff80009bcdb2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x41c/0x1228 drivers/tty/n_tty.c:2211
1 lock held by syz-executor/6441:
 #0: ffff0000d2ba8308 (&xt[i].mutex){+.+.}-{4:4}, at: xt_find_target+0x8c/0x254 net/netfilter/x_tables.c:254
1 lock held by syz-executor/6447:
2 locks held by syz-executor/6449:
8 locks held by syz-executor/7086:
2 locks held by syz.0.153/7354:
3 locks held by dhcpcd-run-hook/7359:
3 locks held by syz-executor/7372:

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