INFO: task syz-executor233:4430 blocked for more than 143 seconds.
      Not tainted 6.2.0-rc3-syzkaller-16387-g9598c377d828 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor233 state:D stack:0     pid:4430  ppid:4429   flags:0x00000009
Call trace:
 __switch_to+0x180/0x298 arch/arm64/kernel/process.c:555
 context_switch kernel/sched/core.c:5244 [inline]
 __schedule+0x438/0x5a0 kernel/sched/core.c:6555
 schedule+0x64/0xa4 kernel/sched/core.c:6631
 io_schedule+0x38/0xbc kernel/sched/core.c:8811
 bit_wait_io+0x18/0x60 kernel/sched/wait_bit.c:209
 __wait_on_bit_lock+0x6c/0x114 kernel/sched/wait_bit.c:90
 out_of_line_wait_on_bit_lock+0x84/0xac 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 include/linux/buffer_head.h:397 [inline]
 __sync_dirty_buffer+0xe8/0x328 fs/buffer.c:2732
 sync_dirty_buffer+0x24/0x34 fs/buffer.c:2758
 __ext4_handle_dirty_metadata+0x118/0x3e8 fs/ext4/ext4_jbd2.c:387
 ext4_handle_dirty_dirblock+0x110/0x228 fs/ext4/namei.c:438
 ext4_finish_convert_inline_dir+0x1f4/0x30c fs/ext4/inline.c:1181
 ext4_convert_inline_data_nolock+0x378/0x450 fs/ext4/inline.c:1258
 ext4_try_add_inline_entry+0x2c8/0x420 fs/ext4/inline.c:1331
 ext4_add_entry+0x1f4/0x700 fs/ext4/namei.c:2385
 ext4_mkdir+0x288/0x5d4 fs/ext4/namei.c:3007
 vfs_mkdir+0x1f8/0x2b0 fs/namei.c:4036
 do_mkdirat+0xe0/0x228 fs/namei.c:4061
 __do_sys_mkdirat fs/namei.c:4076 [inline]
 __se_sys_mkdirat fs/namei.c:4074 [inline]
 __arm64_sys_mkdirat+0x40/0x54 fs/namei.c:4074
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall arch/arm64/kernel/syscall.c:52 [inline]
 el0_svc_common+0x138/0x220 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x48/0x104 arch/arm64/kernel/syscall.c:193
 el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:584

Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/11:
 #0: ffff80000d645648 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x3c/0x450 kernel/rcu/tasks.h:507
1 lock held by rcu_tasks_trace/12:
 #0: ffff80000d645c98 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x3c/0x450 kernel/rcu/tasks.h:507
1 lock held by khungtaskd/27:
 #0: ffff80000d645520 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:324
2 locks held by getty/4078:
 #0: ffff0000c80d8898 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x28/0x58 drivers/tty/tty_ldisc.c:244
 #1: ffff80000f8562f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x19c/0x89c drivers/tty/n_tty.c:2177
3 locks held by syz-executor233/4430:
 #0: ffff0000c4d32460 (sb_writers#3){.+.+}-{0:0}, at: mnt_want_write+0x20/0x64 fs/namespace.c:508
 #1: ffff0000cadda0b0 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:791 [inline]
 #1: ffff0000cadda0b0 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: filename_create+0xf8/0x218 fs/namei.c:3807
 #2: ffff0000cadd9d78 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_lock_xattr fs/ext4/xattr.h:155 [inline]
 #2: ffff0000cadd9d78 (&ei->xattr_sem){++++}-{3:3}, at: ext4_try_add_inline_entry+0x84/0x420 fs/ext4/inline.c:1289

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