INFO: task syz-executor.3:8383 blocked for more than 143 seconds.
      Not tainted 6.9.0-rc4-syzkaller-g6a71d2909427 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3  state:D stack:0     pid:8383  tgid:8377  ppid:7322   flags:0x00000005
Call trace:
 __switch_to+0x314/0x560 arch/arm64/kernel/process.c:553
 context_switch kernel/sched/core.c:5409 [inline]
 __schedule+0x14bc/0x24ec kernel/sched/core.c:6746
 __schedule_loop kernel/sched/core.c:6823 [inline]
 schedule+0xbc/0x238 kernel/sched/core.c:6838
 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6895
 __mutex_lock_common+0xbd8/0x21a0 kernel/locking/mutex.c:684
 __mutex_lock kernel/locking/mutex.c:752 [inline]
 mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:804
 __fdget_pos+0x218/0x2a4 fs/file.c:1191
 fdget_pos include/linux/file.h:76 [inline]
 ksys_read+0x8c/0x26c fs/read_write.c:610
 __do_sys_read fs/read_write.c:629 [inline]
 __se_sys_read fs/read_write.c:627 [inline]
 __arm64_sys_read+0x7c/0x90 fs/read_write.c:627
 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:133
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152
 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598

Showing all locks held in the system:
1 lock held by khungtaskd/30:
 #0: ffff80008f0578c0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:328
1 lock held by klogd/5847:
2 locks held by getty/6006:
 #0: ffff0000d218f0a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340
 #1: ffff800097bab2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x41c/0x1228 drivers/tty/n_tty.c:2201
3 locks held by syz-fuzzer/6339:
 #0: ffff0000d8420420 (sb_writers#3){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:409
 #1: ffff0000eff8b600 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:830 [inline]
 #1: ffff0000eff8b600 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: do_unlinkat+0x2dc/0x700 fs/namei.c:4386
 #2: ffff0000eff8e800 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:795 [inline]
 #2: ffff0000eff8e800 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: vfs_unlink+0xd8/0x508 fs/namei.c:4324
6 locks held by syz-executor.3/8378:
1 lock held by syz-executor.3/8383:
 #0: ffff0000d38dcac8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x218/0x2a4 fs/file.c:1191

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