INFO: task syz.2.7:4112 blocked for more than 144 seconds.
      Not tainted 5.15.165-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.7         state:D stack:    0 pid: 4112 ppid:  4032 flags:0x04000001
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
 rwsem_down_write_slowpath+0xd94/0x17e0 kernel/locking/rwsem.c:1165
 __down_write_common kernel/locking/rwsem.c:1292 [inline]
 __down_write kernel/locking/rwsem.c:1301 [inline]
 down_write+0xe8/0x12c kernel/locking/rwsem.c:1552
 inode_lock include/linux/fs.h:789 [inline]
 open_last_lookups fs/namei.c:3529 [inline]
 path_openat+0x640/0x26cc fs/namei.c:3739
 do_filp_open+0x1a8/0x3b4 fs/namei.c:3769
 do_sys_openat2+0x128/0x3e0 fs/open.c:1253
 do_sys_open fs/open.c:1269 [inline]
 __do_sys_openat fs/open.c:1285 [inline]
 __se_sys_openat fs/open.c:1280 [inline]
 __arm64_sys_openat+0x1f0/0x240 fs/open.c:1280
 __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: ffff800014c917a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:311
2 locks held by getty/3781:
 #0: ffff0000d3976098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x40/0x50 drivers/tty/tty_ldsem.c:340
 #1: ffff800019fb62e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x414/0x1204 drivers/tty/n_tty.c:2158
1 lock held by syz.2.7/4110:
1 lock held by syz.2.7/4112:
 #0: ffff0000e7118188 (&type->i_mutex_dir_key#8){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:789 [inline]
 #0: ffff0000e7118188 (&type->i_mutex_dir_key#8){+.+.}-{3:3}, at: open_last_lookups fs/namei.c:3529 [inline]
 #0: ffff0000e7118188 (&type->i_mutex_dir_key#8){+.+.}-{3:3}, at: path_openat+0x640/0x26cc fs/namei.c:3739
3 locks held by kworker/u4:14/4467:
2 locks held by syz.1.132/4607:
1 lock held by syz.1.132/4622:
 #0: ffff0000f75ac188 (&type->i_mutex_dir_key#8){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:789 [inline]
 #0: ffff0000f75ac188 (&type->i_mutex_dir_key#8){+.+.}-{3:3}, at: open_last_lookups fs/namei.c:3529 [inline]
 #0: ffff0000f75ac188 (&type->i_mutex_dir_key#8){+.+.}-{3:3}, at: path_openat+0x640/0x26cc fs/namei.c:3739
2 locks held by syz.3.157/4769:
1 lock held by syz.3.157/4777:
 #0: ffff0000e71186d0 (&type->i_mutex_dir_key#8){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:789 [inline]
 #0: ffff0000e71186d0 (&type->i_mutex_dir_key#8){+.+.}-{3:3}, at: open_last_lookups fs/namei.c:3529 [inline]
 #0: ffff0000e71186d0 (&type->i_mutex_dir_key#8){+.+.}-{3:3}, at: path_openat+0x640/0x26cc fs/namei.c:3739
1 lock held by syz-executor/4854:
 #0: ffff800014c95da8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:290 [inline]
 #0: ffff800014c95da8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x320/0x660 kernel/rcu/tree_exp.h:845
2 locks held by syz.2.586/6519:
2 locks held by syz.1.587/6521:
1 lock held by syz.0.599/6530:
 #0: ffff0000d228ba98 (&mm->mmap_lock){++++}-{3:3}, at: mmap_write_lock_killable include/linux/mmap_lock.h:87 [inline]
 #0: ffff0000d228ba98 (&mm->mmap_lock){++++}-{3:3}, at: vm_mmap_pgoff+0x15c/0x2b4 mm/util.c:549
1 lock held by syz.0.599/6531:
 #0: ffff0000d228ba98 (&mm->mmap_lock){++++}-{3:3}, at: mmap_write_lock_killable include/linux/mmap_lock.h:87 [inline]
 #0: ffff0000d228ba98 (&mm->mmap_lock){++++}-{3:3}, at: do_madvise+0x6a4/0x2c70 mm/madvise.c:1171
2 locks held by syz.0.599/6534:

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