INFO: task syz-executor.0:4305 blocked for more than 143 seconds.
      Not tainted 5.15.180-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0  state:D stack:    0 pid: 4305 ppid:     1 flags:0x00000005
Call trace:
 __switch_to+0x2f4/0x558 arch/arm64/kernel/process.c:518
 context_switch kernel/sched/core.c:5030 [inline]
 __schedule+0xe00/0x1c0c kernel/sched/core.c:6376
 schedule+0x11c/0x1c8 kernel/sched/core.c:6459
 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6518
 __mutex_lock_common+0xa9c/0x1edc kernel/locking/mutex.c:669
 __mutex_lock kernel/locking/mutex.c:729 [inline]
 mutex_lock_nested+0xac/0x11c kernel/locking/mutex.c:743
 fuse_lock_inode+0xd4/0x128 fs/fuse/inode.c:491
 fuse_lookup+0xc4/0x4a8 fs/fuse/dir.c:427
 __lookup_slow+0x24c/0x380 fs/namei.c:1663
 lookup_slow+0x5c/0x80 fs/namei.c:1680
 walk_component+0x2b0/0x3a8 fs/namei.c:1976
 link_path_walk+0x590/0xb8c fs/namei.c:-1
 path_openat+0x1c0/0x26e4 fs/namei.c:3738
 do_filp_open+0x164/0x330 fs/namei.c:3769
 do_sys_openat2+0x128/0x3d8 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+0x120/0x154 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+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
INFO: task syz-executor.0:4408 blocked for more than 143 seconds.
      Not tainted 5.15.180-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0  state:D stack:    0 pid: 4408 ppid:  4305 flags:0x0000000d
Call trace:
 __switch_to+0x2f4/0x558 arch/arm64/kernel/process.c:518
 context_switch kernel/sched/core.c:5030 [inline]
 __schedule+0xe00/0x1c0c kernel/sched/core.c:6376
 schedule+0x11c/0x1c8 kernel/sched/core.c:6459
 request_wait_answer fs/fuse/dev.c:411 [inline]
 __fuse_request_send fs/fuse/dev.c:430 [inline]
 fuse_simple_request+0xe2c/0x16dc fs/fuse/dev.c:515
 fuse_lookup_name+0x1ec/0x60c fs/fuse/dir.c:383
 fuse_lookup+0x110/0x4a8 fs/fuse/dir.c:428
 __lookup_slow+0x24c/0x380 fs/namei.c:1663
 lookup_slow+0x5c/0x80 fs/namei.c:1680
 walk_component+0x2b0/0x3a8 fs/namei.c:1976
 link_path_walk+0x590/0xb8c fs/namei.c:-1
 path_openat+0x1c0/0x26e4 fs/namei.c:3738
 do_filp_open+0x164/0x330 fs/namei.c:3769
 do_sys_openat2+0x128/0x3d8 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+0x120/0x154 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+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0xcc/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: ffff8000143211e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:311
2 locks held by getty/3781:
 #0: ffff0000d3326098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x40/0x50 drivers/tty/tty_ldsem.c:340
 #1: ffff80001b7802e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x2f0/0xf6c drivers/tty/n_tty.c:2158
2 locks held by syz-executor.0/4305:
 #0: ffff0000e0890150 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:797 [inline]
 #0: ffff0000e0890150 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: lookup_slow+0x4c/0x80 fs/namei.c:1679
 #1: ffff0000e08905b8 (&fi->mutex){+.+.}-{3:3}, at: fuse_lock_inode+0xd4/0x128 fs/fuse/inode.c:491
2 locks held by syz-executor.0/4408:
 #0: ffff0000e0890150 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:797 [inline]
 #0: ffff0000e0890150 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: lookup_slow+0x4c/0x80 fs/namei.c:1679
 #1: ffff0000e08905b8 (&fi->mutex){+.+.}-{3:3}, at: fuse_lock_inode+0xd4/0x128 fs/fuse/inode.c:491

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