INFO: task syz-executor.0:13044 blocked for more than 143 seconds.
      Not tainted 6.0.0-rc7-syzkaller-18095-gbbed346d5a96 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0  state:D
 stack:    0 pid:13044 ppid:  3060 flags:0x00000009
Call trace:
 __switch_to+0x180/0x298 arch/arm64/kernel/process.c:557
 context_switch kernel/sched/core.c:5182 [inline]
 __schedule+0x414/0x5a0 kernel/sched/core.c:6494
 schedule+0x64/0xa4 kernel/sched/core.c:6570
 schedule_timeout+0x64/0x1b4 kernel/time/timer.c:1911
 do_wait_for_common+0xf4/0x184 kernel/sched/completion.c:85
 __wait_for_common kernel/sched/completion.c:106 [inline]
 wait_for_common kernel/sched/completion.c:117 [inline]
 wait_for_completion+0x48/0x60 kernel/sched/completion.c:138
 f2fs_issue_checkpoint+0x158/0x244
 f2fs_sync_fs+0x8c/0xc8 fs/f2fs/super.c:1651
 sync_fs_one_sb+0x64/0x90 fs/sync.c:84
 iterate_supers+0xc0/0x150 fs/super.c:723
 ksys_sync+0x64/0xc8 fs/sync.c:104
 __arm64_sys_sync+0x14/0x24 fs/sync.c:113
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall arch/arm64/kernel/syscall.c:52 [inline]
 el0_svc_common+0x138/0x220 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x48/0x164 arch/arm64/kernel/syscall.c:206
 el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:636
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:654
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:581
INFO: task syz-executor.4:13049 blocked for more than 143 seconds.
      Not tainted 6.0.0-rc7-syzkaller-18095-gbbed346d5a96 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4  state:D
 stack:    0 pid:13049 ppid:  3063 flags:0x00000009
Call trace:
 __switch_to+0x180/0x298 arch/arm64/kernel/process.c:557
 context_switch kernel/sched/core.c:5182 [inline]
 __schedule+0x414/0x5a0 kernel/sched/core.c:6494
 schedule+0x64/0xa4 kernel/sched/core.c:6570
 schedule_timeout+0x64/0x1b4 kernel/time/timer.c:1911
 do_wait_for_common+0xf4/0x184 kernel/sched/completion.c:85
 __wait_for_common kernel/sched/completion.c:106 [inline]
 wait_for_common kernel/sched/completion.c:117 [inline]
 wait_for_completion+0x48/0x60 kernel/sched/completion.c:138
 f2fs_issue_checkpoint+0x158/0x244
 f2fs_sync_fs+0x8c/0xc8 fs/f2fs/super.c:1651
 sync_fs_one_sb+0x64/0x90 fs/sync.c:84
 iterate_supers+0xc0/0x150 fs/super.c:723
 ksys_sync+0x64/0xc8 fs/sync.c:104
 __arm64_sys_sync+0x14/0x24 fs/sync.c:113
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall arch/arm64/kernel/syscall.c:52 [inline]
 el0_svc_common+0x138/0x220 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x48/0x164 arch/arm64/kernel/syscall.c:206
 el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:636
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:654
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:581
INFO: task syz-executor.4:13061 blocked for more than 143 seconds.
      Not tainted 6.0.0-rc7-syzkaller-18095-gbbed346d5a96 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4  state:D
 stack:    0 pid:13061 ppid:  3063 flags:0x00000009
Call trace:
 __switch_to+0x180/0x298 arch/arm64/kernel/process.c:557
 context_switch kernel/sched/core.c:5182 [inline]
 __schedule+0x414/0x5a0 kernel/sched/core.c:6494
 schedule+0x64/0xa4 kernel/sched/core.c:6570
 schedule_timeout+0x64/0x1b4 kernel/time/timer.c:1911
 do_wait_for_common+0xf4/0x184 kernel/sched/completion.c:85
 __wait_for_common kernel/sched/completion.c:106 [inline]
 wait_for_common kernel/sched/completion.c:117 [inline]
 wait_for_completion+0x48/0x60 kernel/sched/completion.c:138
 f2fs_issue_checkpoint+0x158/0x244
 f2fs_sync_fs+0x8c/0xc8 fs/f2fs/super.c:1651
 sync_fs_one_sb+0x64/0x90 fs/sync.c:84
 iterate_supers+0xc0/0x150 fs/super.c:723
 ksys_sync+0x64/0xc8 fs/sync.c:104
 __arm64_sys_sync+0x14/0x24 fs/sync.c:113
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall arch/arm64/kernel/syscall.c:52 [inline]
 el0_svc_common+0x138/0x220 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x48/0x164 arch/arm64/kernel/syscall.c:206
 el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:636
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:654
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:581

Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/11:
 #0: 
ffff80000d433568
 (
rcu_tasks.tasks_gp_mutex
){+.+.}-{3:3}
, at: rcu_tasks_one_gp+0x3c/0x450 kernel/rcu/tasks.h:507
1 lock held by rcu_tasks_trace/12:
 #0: 
ffff80000d433bb8
 (
rcu_tasks_trace.tasks_gp_mutex
){+.+.}-{3:3}
, at: rcu_tasks_one_gp+0x3c/0x450 kernel/rcu/tasks.h:507
1 lock held by khungtaskd/27:
 #0: 
ffff80000d433440
 (
rcu_read_lock
){....}-{1:2}
, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:279
2 locks held by getty/2710:
 #0: 
ffff0000c6a02898
 (
&tty->ldisc_sem
){++++}-{0:0}
, at: tty_ldisc_ref_wait+0x28/0x58 drivers/tty/tty_ldisc.c:244
 #1: 
ffff80000f6162f0
 (
&ldata->atomic_read_lock
){+.+.}-{3:3}
, at: n_tty_read+0x19c/0x89c drivers/tty/n_tty.c:2177
1 lock held by syz-executor.0/13044:
 #0: 
ffff00012b7eb0e0
 (
&type->s_umount_key
#83
){++++}-{3:3}
, at: iterate_supers+0x7c/0x150 fs/super.c:721
1 lock held by syz-executor.4/13049:
 #0: 
ffff00012b7eb0e0
 (
&type->s_umount_key
#83
){++++}-{3:3}
, at: iterate_supers+0x7c/0x150 fs/super.c:721
1 lock held by syz-executor.4/13061:
 #0: 
ffff00012b7eb0e0
 (
&type->s_umount_key
#83
){++++}-{3:3}, at: iterate_supers+0x7c/0x150 fs/super.c:721
5 locks held by f2fs_ckpt-7:4/13055:
1 lock held by syz-executor.3/13091:
 #0: 
ffff00012b7eb0e0
 (
&type->s_umount_key
#83
){++++}-{3:3}
, at: iterate_supers+0x7c/0x150 fs/super.c:721
1 lock held by syz-executor.0/13119:
 #0: 
ffff00012b7eb0e0
 (
&type->s_umount_key
#83
){++++}-{3:3}
, at: iterate_supers+0x7c/0x150 fs/super.c:721
1 lock held by syz-executor.4/13148:
 #0: 
ffff00012b7eb0e0
 (
&type->s_umount_key
#83
){++++}-{3:3}
, at: iterate_supers+0x7c/0x150 fs/super.c:721
1 lock held by syz-executor.4/13149:
 #0: 
ffff00012b7eb0e0
 (
&type->s_umount_key
#83
){++++}-{3:3}
, at: iterate_supers+0x7c/0x150 fs/super.c:721
1 lock held by syz-executor.4/13150:
 #0: 
ffff00012b7eb0e0 (&type->s_umount_key#83){++++}-{3:3}, at: iterate_supers+0x7c/0x150 fs/super.c:721
1 lock held by syz-executor.0/13206:
 #0: 
ffff00012b7eb0e0
 (
&type->s_umount_key
#83
){++++}-{3:3}
, at: iterate_supers+0x7c/0x150 fs/super.c:721
1 lock held by syz-executor.0/13209:
 #0: 
ffff00012b7eb0e0
 (
&type->s_umount_key
#83
){++++}-{3:3}
, at: iterate_supers+0x7c/0x150 fs/super.c:721
1 lock held by syz-executor.3/13216:
 #0: 
ffff00012b7eb0e0
 (
&type->s_umount_key
#83
){++++}-{3:3}
, at: iterate_supers+0x7c/0x150 fs/super.c:721
1 lock held by syz-executor.4/13239:
 #0: 
ffff00012b7eb0e0
 (
&type->s_umount_key
#83
){++++}-{3:3}
, at: iterate_supers+0x7c/0x150 fs/super.c:721
1 lock held by syz-executor.4/13240:
 #0: 
ffff00012b7eb0e0
 (
&type->s_umount_key
#83
){++++}-{3:3}
, at: iterate_supers+0x7c/0x150 fs/super.c:721
1 lock held by syz-executor.4/13241:
 #0: 
ffff00012b7eb0e0 (
&type->s_umount_key
#83
){++++}-{3:3}, at: iterate_supers+0x7c/0x150 fs/super.c:721

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