INFO: task syz-executor.1:11775 blocked for more than 143 seconds.
      Not tainted 5.15.106-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1  state:D stack:    0 pid:11775 ppid:  4092 flags:0x00000009
Call trace:
 __switch_to+0x308/0x5e8 arch/arm64/kernel/process.c:518
 context_switch kernel/sched/core.c:5026 [inline]
 __schedule+0xf10/0x1e38 kernel/sched/core.c:6372
 schedule+0x11c/0x1c8 kernel/sched/core.c:6455
 io_schedule+0x8c/0x194 kernel/sched/core.c:8472
 bit_wait_io+0x1c/0xac kernel/sched/wait_bit.c:209
 __wait_on_bit_lock+0xcc/0x1f0 kernel/sched/wait_bit.c:90
 out_of_line_wait_on_bit_lock+0x194/0x21c kernel/sched/wait_bit.c:117
 wait_on_bit_lock_io include/linux/wait_bit.h:208 [inline]
 __lock_buffer fs/buffer.c:69 [inline]
 lock_buffer+0x108/0x174 include/linux/buffer_head.h:402
 __sync_dirty_buffer+0x6c/0x350 fs/buffer.c:3144
 sync_dirty_buffer+0x24/0x34 fs/buffer.c:3170
 __ext4_handle_dirty_metadata+0x198/0x740 fs/ext4/ext4_jbd2.c:381
 ext4_handle_dirty_dirblock+0x2d0/0x5c0 fs/ext4/namei.c:438
 ext4_finish_convert_inline_dir+0x4e8/0x6c8 fs/ext4/inline.c:1188
 ext4_convert_inline_data_nolock+0x5c4/0xc18 fs/ext4/inline.c:1265
 ext4_try_add_inline_entry+0x954/0xdc4 fs/ext4/inline.c:1338
 ext4_add_entry+0x554/0xf0c fs/ext4/namei.c:2384
 ext4_mkdir+0x43c/0xa74 fs/ext4/namei.c:3006
 vfs_mkdir+0x350/0x514 fs/namei.c:3994
 do_mkdirat+0x20c/0x610 fs/namei.c:4019
 __do_sys_mkdirat fs/namei.c:4034 [inline]
 __se_sys_mkdirat fs/namei.c:4032 [inline]
 __arm64_sys_mkdirat+0x90/0xa8 fs/namei.c:4032
 __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:596
 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614
 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: ffff800014aa1660 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:268
1 lock held by udevd/3587:
2 locks held by getty/3737:
 #0: ffff0000d3226098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x40/0x50 drivers/tty/tty_ldsem.c:340
 #1: ffff80001a33b2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x414/0x1200 drivers/tty/n_tty.c:2147
2 locks held by kworker/u4:10/5474:
3 locks held by syz-executor.1/11775:
 #0: ffff0000dbe10460 (sb_writers#3){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:377
 #1: ffff0000d3cad3b0 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:822 [inline]
 #1: ffff0000d3cad3b0 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: filename_create+0x200/0x464 fs/namei.c:3765
 #2: ffff0000d3cad088 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_lock_xattr fs/ext4/xattr.h:155 [inline]
 #2: ffff0000d3cad088 (&ei->xattr_sem){++++}-{3:3}, at: ext4_try_add_inline_entry+0xdc/0xdc4 fs/ext4/inline.c:1296
3 locks held by syz-executor.4/15293:
2 locks held by syz-executor.0/15295:

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