INFO: task syz.1.12:6740 blocked
INFO: task syz.1.12:6740 blocked for more than 143 seconds.
      Not tainted 6.16.0-rc5-syzkaller-gec4801305969 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.12        state:D stack:0     pid:6740  tgid:6709  ppid:6530   task_flags:0x400140 flags:0x00000001
Call trace:
 __switch_to+0x414/0x834 arch/arm64/kernel/process.c:742 (T)
 context_switch kernel/sched/core.c:5401 [inline]
 __schedule+0x1414/0x2a28 kernel/sched/core.c:6790
 __schedule_loop kernel/sched/core.c:6868 [inline]
 schedule+0xb4/0x230 kernel/sched/core.c:6883
 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6940
 rwsem_down_write_slowpath+0xa80/0x10f0 kernel/locking/rwsem.c:1176
 __down_write_common kernel/locking/rwsem.c:1304 [inline]
 __down_write kernel/locking/rwsem.c:1313 [inline]
 down_write_nested+0xc0/0xcc kernel/locking/rwsem.c:1694
 inode_lock_nested include/linux/fs.h:914 [inline]
 filename_create+0x1ac/0x3b4 fs/namei.c:4148
 do_mkdirat+0xa8/0x4c8 fs/namei.c:4400
 __do_sys_mkdirat fs/namei.c:4425 [inline]
 __se_sys_mkdirat fs/namei.c:4423 [inline]
 __arm64_sys_mkdirat+0x8c/0xa4 fs/namei.c:4423
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x58/0x180 arch/arm64/kernel/entry-common.c:879
 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:898
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596

Showing all locks held in the system:
1 lock held by khungtaskd/32:
 #0: ffff80008f8599c0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:330
2 locks held by pr/ttyAMA0/43:
4 locks held by kworker/u8:6/229:
 #0: ffff0000c2361148 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3212
 #1: ffff80009bf07bc0 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3212
 #2: ffff0000c884c0e0 (&type->s_umount_key#67){++++}-{4:4}, at: super_trylock_shared+0x24/0xdc fs/super.c:563
 #3: ffff0000f5fea6a8 (&jfs_ip->commit_mutex){+.+.}-{4:4}, at: jfs_commit_inode+0x19c/0x498 fs/jfs/inode.c:102
2 locks held by getty/6286:
 #0: ffff0000cc7730a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340
 #1: ffff80009ba2e2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x34c/0xfa4 drivers/tty/n_tty.c:2222
4 locks held by syz.1.12/6710:
2 locks held by syz.1.12/6740:
 #0: ffff0000c884c428 (sb_writers#13){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:557
 #1: ffff0000f5feaa58 (&type->i_mutex_dir_key#9/1){+.+.}-{4:4}, at: inode_lock_nested include/linux/fs.h:914 [inline]
 #1: ffff0000f5feaa58 (&type->i_mutex_dir_key#9/1){+.+.}-{4:4}, at: filename_create+0x1ac/0x3b4 fs/namei.c:4148

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