INFO: task syz-executor.4:12316 blocked for more than 143 seconds.
      Not tainted 6.1.0-rc5-syzkaller-32269-g9500fc6e9e60 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4  state:D
 stack:0     pid:12316 ppid:3124   flags:0x00000009
Call trace:
 __switch_to+0x180/0x298 arch/arm64/kernel/process.c:553
 context_switch kernel/sched/core.c:5191 [inline]
 __schedule+0x408/0x594 kernel/sched/core.c:6503
 schedule+0x64/0xa4 kernel/sched/core.c:6579
 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:1656
 sync_fs_one_sb+0x64/0x90 fs/sync.c:84
 iterate_supers+0xc0/0x150 fs/super.c:724
 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:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:584
INFO: task syz-executor.4:12328 blocked for more than 143 seconds.
      Not tainted 6.1.0-rc5-syzkaller-32269-g9500fc6e9e60 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4  state:D
 stack:0     pid:12328 ppid:3124   flags:0x00000009
Call trace:
 __switch_to+0x180/0x298 arch/arm64/kernel/process.c:553
 context_switch kernel/sched/core.c:5191 [inline]
 __schedule+0x408/0x594 kernel/sched/core.c:6503
 schedule+0x64/0xa4 kernel/sched/core.c:6579
 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:1656
 sync_fs_one_sb+0x64/0x90 fs/sync.c:84
 iterate_supers+0xc0/0x150 fs/super.c:724
 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:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:584

Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/11:
 #0: 
ffff80000d4d4768
 (
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: ffff80000d4d4db8 (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: 
ffff80000d4d4640
 (
rcu_read_lock
){....}-{1:2}
, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:303
2 locks held by getty/2768:
 #0: 
ffff0000c7c35098
 (&tty->ldisc_sem){++++}-{0:0}
, at: tty_ldisc_ref_wait+0x28/0x58 drivers/tty/tty_ldisc.c:244
 #1: ffff80000f6ee2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x19c/0x89c drivers/tty/n_tty.c:2177
2 locks held by kworker/u4:9/3549:
1 lock held by syz-executor.4/12316:
 #0: 
ffff0001209ec0e0
 (
&type->s_umount_key
#57
){++++}-{3:3}, at: iterate_supers+0x7c/0x150 fs/super.c:722
1 lock held by syz-executor.4/12328:
 #0: ffff0001209ec0e0 (&type->s_umount_key#57){++++}-{3:3}, at: iterate_supers+0x7c/0x150 fs/super.c:722
2 locks held by f2fs_ckpt-7:4/12326:
1 lock held by syz-executor.4/12429:
 #0: ffff0001209ec0e0 (&type->s_umount_key#57){++++}-{3:3}, at: iterate_supers+0x7c/0x150 fs/super.c:722
1 lock held by syz-executor.4/12430:
 #0: ffff0001209ec0e0 (&type->s_umount_key#57){++++}-{3:3}, at: iterate_supers+0x7c/0x150 fs/super.c:722
1 lock held by syz-executor.4/12431:
 #0: ffff0001209ec0e0 (&type->s_umount_key#57){++++}-{3:3}, at: iterate_supers+0x7c/0x150 fs/super.c:722
3 locks held by syz-executor.5/13778:
1 lock held by syz-executor.0/13782:
1 lock held by syz-executor.4/13785:
 #0: 
ffff0000cabc5850
 (
&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: __sock_release net/socket.c:649 [inline]
&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: sock_close+0x40/0xf0 net/socket.c:1365
1 lock held by syz-executor.3/13789:
 #0: ffff0001102fd0e0 (&type->s_umount_key#51/1){+.+.}-{3:3}, at: alloc_super+0xf8/0x430 fs/super.c:228
1 lock held by syz-executor.1/13791:
 #0: ffff0001102fe0e0 (&type->s_umount_key#90/1){+.+.}-{3:3}, at: alloc_super+0xf8/0x430 fs/super.c:228

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