INFO: task syz-executor.2:5339 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.2  state:D stack:    0 pid: 5339 ppid:  3078 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/2714:
 #0: ffff0000c706e898 (&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
5 locks held by syz-executor.5/3070:
5 locks held by kworker/0:8/3163:
 #0: ffff0000c0c12138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x270/0x504 kernel/workqueue.c:2262
 #1: 
ffff80001364bd80
 (
(work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x29c/0x504 kernel/workqueue.c:2264
 #2: 
ffff0000c629c190
 (
&dev->mutex
){....}-{3:3}
, at: device_lock include/linux/device.h:835 [inline]
, at: hub_event+0x8c/0x658 drivers/usb/core/hub.c:5681
 #3: 
ffff000112b61190
 (
&dev->mutex
){....}-{3:3}
, at: device_lock include/linux/device.h:835 [inline]
, at: usb_disconnect+0xa4/0x418 drivers/usb/core/hub.c:2226
 #4: 
ffff000112b66918
 (
&dev->mutex
){....}-{3:3}
, at: device_lock include/linux/device.h:835 [inline]
, at: __device_driver_lock drivers/base/dd.c:1073 [inline]
, at: device_release_driver_internal+0x74/0x3a8 drivers/base/dd.c:1272
2 locks held by kworker/u4:7/5107:
 #0: 
ffff0000c0014938
 ((wq_completion)events_unbound){+.+.}-{0:0}, at: raw_spin_rq_lock_nested kernel/sched/core.c:544 [inline]
 ((wq_completion)events_unbound){+.+.}-{0:0}, at: raw_spin_rq_lock kernel/sched/sched.h:1355 [inline]
 ((wq_completion)events_unbound){+.+.}-{0:0}, at: rq_lock kernel/sched/sched.h:1653 [inline]
 ((wq_completion)events_unbound){+.+.}-{0:0}, at: __schedule+0xa4/0x5a0 kernel/sched/core.c:6411
 #1: ffff0001fefbeb88 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x250/0x310 kernel/sched/psi.c:885
1 lock held by syz-executor.2/5339:
 #0: ffff0001188c00e0 (&type->s_umount_key#86){++++}-{3:3}, at: iterate_supers+0x7c/0x150 fs/super.c:721
2 locks held by f2fs_ckpt-7:2/5307:
3 locks held by kworker/0:9/5846:
 #0: ffff0000c0010738 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x270/0x504 kernel/workqueue.c:2262
 #1: ffff800023343d80 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x29c/0x504 kernel/workqueue.c:2264
 #2: ffff80000d349230 (umhelper_sem){++++}-{3:3}, at: usermodehelper_read_lock_wait+0x68/0x154 kernel/umh.c:249
2 locks held by kworker/u4:13/12526:
1 lock held by syz-executor.2/14042:
 #0: ffff0000ca550d90 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #0: ffff0000ca550d90 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: __sock_release net/socket.c:649 [inline]
 #0: ffff0000ca550d90 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: sock_close+0x40/0xf0 net/socket.c:1365

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