INFO: task syz-executor.0:3571 blocked for more than 430 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0  state:D stack:0     pid:3571  tgid:3571  ppid:1      task_flags:0x400140 flags:0x00000001
Call trace:
 __switch_to+0x20c/0x520 arch/arm64/kernel/process.c:775 (T)
 context_switch kernel/sched/core.c:5510 [inline]
 __schedule+0xf98/0x3500 kernel/sched/core.c:7234
 __schedule_loop kernel/sched/core.c:7311 [inline]
 schedule+0xcc/0x294 kernel/sched/core.c:7326
 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:7383
 __mutex_lock_common kernel/locking/mutex.c:726 [inline]
 __mutex_lock+0x7d8/0x153c kernel/locking/mutex.c:821
 mutex_lock_nested+0x24/0x34 kernel/locking/mutex.c:874
 fuse_lock_inode+0xb4/0xec fs/fuse/inode.c:593
 fuse_lookup+0x14c/0x394 fs/fuse/dir.c:623
 __lookup_slow+0xf4/0x244 fs/namei.c:1919
 lookup_slow+0x58/0x88 fs/namei.c:1936
 walk_component fs/namei.c:2282 [inline]
 link_path_walk+0xdc8/0x19e4 fs/namei.c:2656
 path_openat+0x170/0x3560 fs/namei.c:4859
 do_file_open+0x18c/0x380 fs/namei.c:4892
 do_sys_openat2+0xdc/0x180 fs/open.c:1368
 do_sys_open fs/open.c:1374 [inline]
 __do_sys_openat fs/open.c:1390 [inline]
 __se_sys_openat fs/open.c:1385 [inline]
 __arm64_sys_openat+0x130/0x1e0 fs/open.c:1385
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x74/0x240 arch/arm64/kernel/syscall.c:49
 el0_svc_common.constprop.0+0xac/0x230 arch/arm64/kernel/syscall.c:121
 do_el0_svc+0x40/0x58 arch/arm64/kernel/syscall.c:140
 el0_svc+0x58/0x2a4 arch/arm64/kernel/entry-common.c:736
 el0t_64_sync_handler+0xa0/0xe4 arch/arm64/kernel/entry-common.c:755
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:594
INFO: task syz-executor.0:3690 blocked for more than 430 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0  state:D stack:0     pid:3690  tgid:3684  ppid:3571   task_flags:0x400140 flags:0x00000011
Call trace:
 __switch_to+0x20c/0x520 arch/arm64/kernel/process.c:775 (T)
 context_switch kernel/sched/core.c:5510 [inline]
 __schedule+0xf98/0x3500 kernel/sched/core.c:7234
 __schedule_loop kernel/sched/core.c:7311 [inline]
 schedule+0xcc/0x294 kernel/sched/core.c:7326
 request_wait_answer+0x2c8/0x4a0 fs/fuse/dev.c:743
 __fuse_request_send fs/fuse/dev.c:757 [inline]
 fuse_chan_send+0x31c/0x780 fs/fuse/dev.c:833
 __fuse_simple_request+0x120/0x18c fs/fuse/req.c:69
 fuse_simple_request fs/fuse/fuse_i.h:1012 [inline]
 fuse_lookup_name+0x210/0x64c fs/fuse/dir.c:577
 fuse_lookup+0x194/0x394 fs/fuse/dir.c:624
 __lookup_slow+0xf4/0x244 fs/namei.c:1919
 lookup_slow+0x58/0x88 fs/namei.c:1936
 walk_component fs/namei.c:2282 [inline]
 link_path_walk+0xdc8/0x19e4 fs/namei.c:2656
 path_openat+0x170/0x3560 fs/namei.c:4859
 do_file_open+0x18c/0x380 fs/namei.c:4892
 do_sys_openat2+0xdc/0x180 fs/open.c:1368
 do_sys_open fs/open.c:1374 [inline]
 __do_sys_openat fs/open.c:1390 [inline]
 __se_sys_openat fs/open.c:1385 [inline]
 __arm64_sys_openat+0x130/0x1e0 fs/open.c:1385
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x74/0x240 arch/arm64/kernel/syscall.c:49
 el0_svc_common.constprop.0+0xac/0x230 arch/arm64/kernel/syscall.c:121
 do_el0_svc+0x40/0x58 arch/arm64/kernel/syscall.c:140
 el0_svc+0x58/0x2a4 arch/arm64/kernel/entry-common.c:736
 el0t_64_sync_handler+0xa0/0xe4 arch/arm64/kernel/entry-common.c:755
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:594

Showing all locks held in the system:
1 lock held by khungtaskd/32:
 #0: ffff800087875300 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
 #0: ffff800087875300 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x40/0x190 kernel/locking/lockdep.c:6775
1 lock held by klogd/3183:
1 lock held by dhcpcd/3224:
2 locks held by getty/3319:
 #0: ffff0000171fb0a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340
 #1: ffff80008db0b2e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x420/0xec0 drivers/tty/n_tty.c:2211
2 locks held by syz-executor.0/3571:
 #0: ffff00001bd8cb80 (&type->i_mutex_dir_key#8){++++}-{4:4}, at: inode_lock_shared include/linux/fs.h:1039 [inline]
 #0: ffff00001bd8cb80 (&type->i_mutex_dir_key#8){++++}-{4:4}, at: lookup_slow+0x48/0x88 fs/namei.c:1935
 #1: ffff00001bd8cff8 (&fi->mutex){+.+.}-{4:4}, at: fuse_lock_inode+0xb4/0xec fs/fuse/inode.c:593
2 locks held by syz-executor.0/3690:
 #0: ffff00001bd8cb80 (&type->i_mutex_dir_key#8){++++}-{4:4}, at: inode_lock_shared include/linux/fs.h:1039 [inline]
 #0: ffff00001bd8cb80 (&type->i_mutex_dir_key#8){++++}-{4:4}, at: lookup_slow+0x48/0x88 fs/namei.c:1935
 #1: ffff00001bd8cff8 (&fi->mutex){+.+.}-{4:4}, at: fuse_lock_inode+0xb4/0xec fs/fuse/inode.c:593

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