INFO: task syz.2.18:5256 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.18        state:D stack:    0 pid: 5256 ppid:  4930 flags:0x00000001
Call trace:
 __switch_to+0x2f4/0x558 arch/arm64/kernel/process.c:521
 context_switch kernel/sched/core.c:5049 [inline]
 __schedule+0xe08/0x1bf8 kernel/sched/core.c:6395
 schedule+0x11c/0x1c8 kernel/sched/core.c:6478
 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6537
 rwsem_down_read_slowpath+0x46c/0x8bc kernel/locking/rwsem.c:1055
 __down_read_common kernel/locking/rwsem.c:1239 [inline]
 __down_read kernel/locking/rwsem.c:1252 [inline]
 down_read+0x100/0x390 kernel/locking/rwsem.c:1500
 inode_lock_shared include/linux/fs.h:797 [inline]
 open_last_lookups fs/namei.c:3531 [inline]
 path_openat+0x5e4/0x26e4 fs/namei.c:3739
 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.0.16:5273 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.16        state:D stack:    0 pid: 5273 ppid:  4917 flags:0x00000001
Call trace:
 __switch_to+0x2f4/0x558 arch/arm64/kernel/process.c:521
 context_switch kernel/sched/core.c:5049 [inline]
 __schedule+0xe08/0x1bf8 kernel/sched/core.c:6395
 schedule+0x11c/0x1c8 kernel/sched/core.c:6478
 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6537
 rwsem_down_read_slowpath+0x46c/0x8bc kernel/locking/rwsem.c:1055
 __down_read_common kernel/locking/rwsem.c:1239 [inline]
 __down_read kernel/locking/rwsem.c:1252 [inline]
 down_read+0x100/0x390 kernel/locking/rwsem.c:1500
 inode_lock_shared include/linux/fs.h:797 [inline]
 open_last_lookups fs/namei.c:3531 [inline]
 path_openat+0x5e4/0x26e4 fs/namei.c:3739
 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.3.19:5270 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.19        state:D stack:    0 pid: 5270 ppid:  4937 flags:0x00000001
Call trace:
 __switch_to+0x2f4/0x558 arch/arm64/kernel/process.c:521
 context_switch kernel/sched/core.c:5049 [inline]
 __schedule+0xe08/0x1bf8 kernel/sched/core.c:6395
 schedule+0x11c/0x1c8 kernel/sched/core.c:6478
 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6537
 rwsem_down_read_slowpath+0x46c/0x8bc kernel/locking/rwsem.c:1055
 __down_read_common kernel/locking/rwsem.c:1239 [inline]
 __down_read kernel/locking/rwsem.c:1252 [inline]
 down_read+0x100/0x390 kernel/locking/rwsem.c:1500
 inode_lock_shared include/linux/fs.h:797 [inline]
 open_last_lookups fs/namei.c:3531 [inline]
 path_openat+0x5e4/0x26e4 fs/namei.c:3739
 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: ffff8000143513a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:311
3 locks held by kworker/u4:5/1621:
2 locks held by getty/3805:
 #0: ffff0000d496e098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x40/0x50 drivers/tty/tty_ldsem.c:340
 #1: ffff80001bd6b2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x2f0/0xf6c drivers/tty/n_tty.c:2158
2 locks held by syz.2.18/5251:
1 lock held by syz.2.18/5256:
 #0: ffff0000f0018188 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:797 [inline]
 #0: ffff0000f0018188 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: open_last_lookups fs/namei.c:3531 [inline]
 #0: ffff0000f0018188 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: path_openat+0x5e4/0x26e4 fs/namei.c:3739
4 locks held by syz.0.16/5265:
1 lock held by syz.0.16/5273:
 #0: ffff0000f00186d0 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:797 [inline]
 #0: ffff0000f00186d0 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: open_last_lookups fs/namei.c:3531 [inline]
 #0: ffff0000f00186d0 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: path_openat+0x5e4/0x26e4 fs/namei.c:3739
2 locks held by syz.3.19/5267:
1 lock held by syz.3.19/5270:
 #0: ffff0000f02b8188 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:797 [inline]
 #0: ffff0000f02b8188 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: open_last_lookups fs/namei.c:3531 [inline]
 #0: ffff0000f02b8188 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: path_openat+0x5e4/0x26e4 fs/namei.c:3739
2 locks held by syz.1.17/5459:
1 lock held by syz.1.17/5463:
 #0: ffff0000f02b86d0 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:797 [inline]
 #0: ffff0000f02b86d0 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: open_last_lookups fs/namei.c:3531 [inline]
 #0: ffff0000f02b86d0 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: path_openat+0x5e4/0x26e4 fs/namei.c:3739
3 locks held by syz.4.20/5473:
1 lock held by syz.4.20/5475:
 #0: ffff0000f02b8c18 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:797 [inline]
 #0: ffff0000f02b8c18 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: open_last_lookups fs/namei.c:3531 [inline]
 #0: ffff0000f02b8c18 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: path_openat+0x5e4/0x26e4 fs/namei.c:3739
3 locks held by syz.6.22/5695:
1 lock held by syz.6.22/5705:
 #0: ffff0000f0018c18 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:797 [inline]
 #0: ffff0000f0018c18 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: open_last_lookups fs/namei.c:3531 [inline]
 #0: ffff0000f0018c18 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: path_openat+0x5e4/0x26e4 fs/namei.c:3739
2 locks held by syz.5.21/5697:
1 lock held by syz.5.21/5702:
 #0: ffff0000f0019160 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:797 [inline]
 #0: ffff0000f0019160 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: open_last_lookups fs/namei.c:3531 [inline]
 #0: ffff0000f0019160 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: path_openat+0x5e4/0x26e4 fs/namei.c:3739
2 locks held by syz.7.23/5710:
1 lock held by syz.7.23/5714:
 #0: ffff0000f00196a8 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:797 [inline]
 #0: ffff0000f00196a8 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: open_last_lookups fs/namei.c:3531 [inline]
 #0: ffff0000f00196a8 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: path_openat+0x5e4/0x26e4 fs/namei.c:3739
3 locks held by syz.8.24/5739:
1 lock held by syz.8.24/5743:
 #0: ffff0000f02b96a8 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:797 [inline]
 #0: ffff0000f02b96a8 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: open_last_lookups fs/namei.c:3531 [inline]
 #0: ffff0000f02b96a8 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: path_openat+0x5e4/0x26e4 fs/namei.c:3739
2 locks held by syz.9.25/5741:
1 lock held by syz.9.25/5742:
 #0: ffff0000f02b9160 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:797 [inline]
 #0: ffff0000f02b9160 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: open_last_lookups fs/namei.c:3531 [inline]
 #0: ffff0000f02b9160 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: path_openat+0x5e4/0x26e4 fs/namei.c:3739

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