INFO: task syz-executor.4:4290 blocked for more than 143 seconds.
      Not tainted 5.15.158-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4  state:D stack:    0 pid: 4290 ppid:  3989 flags:0x0000000d
Call trace:
 __switch_to+0x308/0x5e8 arch/arm64/kernel/process.c:518
 context_switch kernel/sched/core.c:5030 [inline]
 __schedule+0xf10/0x1e48 kernel/sched/core.c:6376
 schedule+0x11c/0x1c8 kernel/sched/core.c:6459
 d_wait_lookup+0x1a0/0x27c fs/dcache.c:2563
 d_alloc_parallel+0x9e0/0x11bc fs/dcache.c:2645
 __lookup_slow+0x108/0x388 fs/namei.c:1648
 lookup_slow+0x60/0x84 fs/namei.c:1680
 walk_component+0x394/0x4cc fs/namei.c:1976
 lookup_last fs/namei.c:2431 [inline]
 path_lookupat+0x13c/0x3d0 fs/namei.c:2455
 filename_lookup+0x1c4/0x4c8 fs/namei.c:2484
 user_path_at_empty+0x5c/0x1a4 fs/namei.c:2883
 user_path_at include/linux/namei.h:57 [inline]
 __do_sys_open_tree fs/namespace.c:2493 [inline]
 __se_sys_open_tree fs/namespace.c:2460 [inline]
 __arm64_sys_open_tree+0x20c/0xa00 fs/namespace.c:2460
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584

Showing all locks held in the system:
1 lock held by khungtaskd/27:
 #0: ffff800014b114a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:311
6 locks held by udevd/3589:
2 locks held by getty/3726:
 #0: ffff0000d2a93098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x40/0x50 drivers/tty/tty_ldsem.c:340
 #1: ffff80001a35b2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x414/0x1204 drivers/tty/n_tty.c:2158
1 lock held by syz-executor.4/4284:
1 lock held by syz-executor.4/4290:
 #0: ffff0000cbd94188 (&type->i_mutex_dir_key#12){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:799 [inline]
 #0: ffff0000cbd94188 (&type->i_mutex_dir_key#12){++++}-{3:3}, at: lookup_slow+0x50/0x84 fs/namei.c:1679
1 lock held by syz-executor.1/4479:
1 lock held by udevd/4718:
 #0: ffff0000cb32e118 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev+0x12c/0x89c block/bdev.c:817
2 locks held by kworker/0:16/5368:
 #0: ffff0000c0020938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x66c/0x11b8 kernel/workqueue.c:2283
 #1: ffff80001cc47c00 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x6ac/0x11b8 kernel/workqueue.c:2285
2 locks held by syz-executor.3/6192:
 #0: ffff0000cb32e118 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_put+0xe0/0x6b0 block/bdev.c:912
 #1: ffff0000cb31b468 (&lo->lo_mutex){+.+.}-{3:3}, at: __loop_clr_fd+0xa8/0x9b8 drivers/block/loop.c:1365
2 locks held by kworker/u4:10/6683:
2 locks held by syz-executor.4/7106:

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