INFO: task syz-executor.3:2844 blocked for more than 143 seconds.
      Not tainted 5.15.143-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3  state:D stack:    0 pid: 2844 ppid:  4027 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
 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6518
 rwsem_down_read_slowpath+0x5b0/0x988 kernel/locking/rwsem.c:1047
 __down_read_common kernel/locking/rwsem.c:1231 [inline]
 __down_read kernel/locking/rwsem.c:1244 [inline]
 down_read+0x10c/0x398 kernel/locking/rwsem.c:1490
 iterate_supers+0xb0/0x1dc fs/super.c:703
 ksys_sync+0xb4/0x1cc fs/sync.c:102
 __arm64_sys_sync+0x14/0x24 fs/sync.c:113
 __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: ffff800014af15e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:268
2 locks held by getty/3742:
 #0: ffff0000d2ee2098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x40/0x50 drivers/tty/tty_ldsem.c:340
 #1: ffff800018df02e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x414/0x1204 drivers/tty/n_tty.c:2158
3 locks held by kworker/u4:8/9771:
3 locks held by syz-executor.1/29757:
 #0: ffff0001225a40e0 (&type->s_umount_key#83){++++}-{3:3}, at: do_remount fs/namespace.c:2653 [inline]
 #0: ffff0001225a40e0 (&type->s_umount_key#83){++++}-{3:3}, at: path_mount+0xbbc/0x101c fs/namespace.c:3316
 #1: ffff8000209490f0 (&journal->j_mutex){+.+.}-{3:3}, at: reiserfs_mutex_lock_safe fs/reiserfs/reiserfs.h:814 [inline]
 #1: ffff8000209490f0 (&journal->j_mutex){+.+.}-{3:3}, at: lock_journal fs/reiserfs/journal.c:534 [inline]
 #1: ffff8000209490f0 (&journal->j_mutex){+.+.}-{3:3}, at: do_journal_end+0x2c0/0x3c50 fs/reiserfs/journal.c:4025
 #2: ffff800020949180 (&journal->j_flush_mutex){+.+.}-{3:3}, at: reiserfs_mutex_lock_safe fs/reiserfs/reiserfs.h:814 [inline]
 #2: ffff800020949180 (&journal->j_flush_mutex){+.+.}-{3:3}, at: flush_journal_list+0x168/0x1974 fs/reiserfs/journal.c:1366
1 lock held by syz-executor.3/2844:
 #0: ffff0001225a40e0 (&type->s_umount_key#83){++++}-{3:3}, at: iterate_supers+0xb0/0x1dc fs/super.c:703
1 lock held by syz-executor.2/3634:
 #0: ffff0001225a40e0 (&type->s_umount_key#83){++++}-{3:3}, at: iterate_supers+0xb0/0x1dc fs/super.c:703
1 lock held by syz-executor.3/3668:
 #0: ffff0001225a40e0 (&type->s_umount_key#83){++++}-{3:3}, at: iterate_supers+0xb0/0x1dc fs/super.c:703
1 lock held by syz-executor.3/3848:
 #0: ffff0001225a40e0 (&type->s_umount_key#83){++++}-{3:3}, at: iterate_supers+0xb0/0x1dc fs/super.c:703

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