INFO: task syz.0.15:4897 blocked for more than 143 seconds.
      Not tainted 5.15.171-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.15        state:D stack:    0 pid: 4897 ppid:  4652 flags:0x00000009
Call trace:
 __switch_to+0x308/0x5e8 arch/arm64/kernel/process.c:518
 context_switch kernel/sched/core.c:5027 [inline]
 __schedule+0xf10/0x1e48 kernel/sched/core.c:6373
 schedule+0x11c/0x1c8 kernel/sched/core.c:6456
 io_schedule+0x8c/0x194 kernel/sched/core.c:8481
 wait_on_page_bit_common+0x6fc/0xc14 mm/filemap.c:1356
 __lock_page+0x8c/0xa8 mm/filemap.c:1648
 lock_page include/linux/pagemap.h:625 [inline]
 release_metapage+0x144/0x918 fs/jfs/jfs_metapage.c:736
 discard_metapage fs/jfs/jfs_metapage.h:88 [inline]
 __get_metapage+0xb38/0x1128 fs/jfs/jfs_metapage.c:645
 jfs_readdir+0x2028/0x385c fs/jfs/jfs_dtree.c:3316
 iterate_dir+0x1f4/0x4ec
 __do_sys_getdents64 fs/readdir.c:369 [inline]
 __se_sys_getdents64 fs/readdir.c:354 [inline]
 __arm64_sys_getdents64+0x1c4/0x4c4 fs/readdir.c:354
 __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: ffff800014ca22e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:311
2 locks held by getty/3780:
 #0: ffff0000d31cb098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x40/0x50 drivers/tty/tty_ldsem.c:340
 #1: ffff80001d50e2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x414/0x1204 drivers/tty/n_tty.c:2158
2 locks held by syz.0.15/4897:
 #0: ffff0000d00a4af0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x128/0x170 fs/file.c:1057
 #1: ffff0000e1ae33c0 (&type->i_mutex_dir_key#8){+.+.}-{3:3}, at: iterate_dir+0x124/0x4ec fs/readdir.c:57
2 locks held by syz.1.16/4913:
 #0: ffff0000d164aff0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x128/0x170 fs/file.c:1057
 #1: ffff0000e1ae8ec0 (&type->i_mutex_dir_key#8){+.+.}-{3:3}, at: iterate_dir+0x124/0x4ec fs/readdir.c:57
2 locks held by syz.2.17/4929:
 #0: ffff0000c937d770 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x128/0x170 fs/file.c:1057
 #1: ffff0000e1aee200 (&type->i_mutex_dir_key#8){+.+.}-{3:3}, at: iterate_dir+0x124/0x4ec fs/readdir.c:57
2 locks held by syz.3.18/4944:
 #0: ffff0000cf3ee870 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x128/0x170 fs/file.c:1057
 #1: ffff0000ec16bd00 (&type->i_mutex_dir_key#8){+.+.}-{3:3}, at: iterate_dir+0x124/0x4ec fs/readdir.c:57
2 locks held by syz.4.19/4969:
 #0: ffff0000c937d270 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x128/0x170 fs/file.c:1057
 #1: ffff0000e18aa140 (&type->i_mutex_dir_key#8){+.+.}-{3:3}, at: iterate_dir+0x124/0x4ec fs/readdir.c:57
2 locks held by syz.5.20/4994:
 #0: ffff0000cec179f0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x128/0x170 fs/file.c:1057
 #1: ffff0000e18ad8c0 (&type->i_mutex_dir_key#8){+.+.}-{3:3}, at: iterate_dir+0x124/0x4ec fs/readdir.c:57
2 locks held by syz.6.21/5019:
 #0: ffff0000db2a74f0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x128/0x170 fs/file.c:1057
 #1: ffff0000ec2c33c0 (&type->i_mutex_dir_key#8){+.+.}-{3:3}, at: iterate_dir+0x124/0x4ec fs/readdir.c:57
2 locks held by syz.7.22/5052:
 #0: ffff0000db2c0d70 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x128/0x170 fs/file.c:1057
 #1: ffff0000ec34b3c0 (&type->i_mutex_dir_key#8){+.+.}-{3:3}, at: iterate_dir+0x124/0x4ec fs/readdir.c:57
2 locks held by syz.8.23/5078:
 #0: ffff0000c1dc2870 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x128/0x170 fs/file.c:1057
 #1: ffff0000fd000580 (&type->i_mutex_dir_key#8){+.+.}-{3:3}, at: iterate_dir+0x124/0x4ec fs/readdir.c:57

=============================================