INFO: task syz.0.783:13487 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.783       state:D stack:24960 pid:13487 tgid:13486 ppid:13290  task_flags:0x400040 flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0x15dd/0x52d0
 schedule+0x164/0x360
 schedule_preempt_disabled+0x13/0x30
 rwsem_down_write_slowpath+0x899/0x1040
 down_write+0x1bc/0x200
 super_lock+0x289/0x3d0
 user_get_super+0xc8/0x120
 __se_sys_quotactl+0x540/0x9e0
 do_syscall_64+0x14d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd9f019c799
RSP: 002b:00007fd9f0fd5028 EFLAGS: 00000246 ORIG_RAX: 00000000000000b3
RAX: ffffffffffffffda RBX: 00007fd9f0415fa0 RCX: 00007fd9f019c799
RDX: 0000000000000000 RSI: 00002000000000c0 RDI: ffffffff80000200
RBP: 00007fd9f0232c99 R08: 0000000000000000 R09: 0000000000000000
R10: 0000200000000140 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd9f0416038 R14: 00007fd9f0415fa0 R15: 00007ffe226ead38
 </TASK>
INFO: task syz.0.783:13514 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.783       state:D stack:26880 pid:13514 tgid:13486 ppid:13290  task_flags:0x400040 flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0x15dd/0x52d0
 schedule+0x164/0x360
 schedule_preempt_disabled+0x13/0x30
 rwsem_down_write_slowpath+0x899/0x1040
 down_write+0x1bc/0x200
 super_lock+0x289/0x3d0
 user_get_super+0xc8/0x120
 __se_sys_quotactl+0x540/0x9e0
 do_syscall_64+0x14d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd9f019c799
RSP: 002b:00007fd9f0fb4028 EFLAGS: 00000246 ORIG_RAX: 00000000000000b3
RAX: ffffffffffffffda RBX: 00007fd9f0416090 RCX: 00007fd9f019c799
RDX: 0000000000000000 RSI: 0000200000000300 RDI: ffffffff80000201
RBP: 00007fd9f0232c99 R08: 0000000000000000 R09: 0000000000000000
R10: 0000200000000900 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd9f0416128 R14: 00007fd9f0416090 R15: 00007ffe226ead38
 </TASK>

Showing all locks held in the system:
2 locks held by ksoftirqd/1/23:
 #0: ffff88823c63ade0 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x31/0x150
 #1: ffff88823c624588 (psi_seq){-.-.}-{0:0}, at: psi_task_switch+0x53/0x880
1 lock held by khungtaskd/35:
 #0: ffffffff8e75e520 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
3 locks held by kworker/u10:6/699:
 #0: ffff8881000ac148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0xa52/0x18c0
 #1: ffffc90004e77c40 ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0xa8d/0x18c0
 #2: ffffffff8fbcda08 (rtnl_mutex){+.+.}-{4:4}, at: linkwatch_event+0xe/0x60
2 locks held by getty/5637:
 #0: ffff8881738050a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc9000356b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45c/0x13c0
3 locks held by kworker/1:5/6284:
 #0: ffff88810006b148 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0xa52/0x18c0
 #1: ffffc9000733fc40 (free_ipc_work){+.+.}-{0:0}, at: process_scheduled_works+0xa8d/0x18c0
 #2: ffffffff8e7647b8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x38d/0x770
6 locks held by kworker/u8:5/7279:
 #0: ffff8881012ae148 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0xa52/0x18c0
 #1: ffffc90003867c40 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0xa8d/0x18c0
 #2: ffffffff8fbbf270 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0xf4/0x800
 #3: ffffffff8fbcda08 (rtnl_mutex){+.+.}-{4:4}, at: ieee80211_unregister_hw+0x55/0x2c0
 #4: ffff88810e600788 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: cfg80211_netdev_notifier_call+0x1a8/0x1470
 #5: ffffffff8e7647b8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x2d0/0x770
2 locks held by syz-executor/11125:
1 lock held by syz.0.783/13487:
 #0: ffff88816b99c0e0 (&type->s_umount_key#72){++++}-{4:4}, at: super_lock+0x289/0x3d0
1 lock held by syz.0.783/13514:
 #0: ffff88816b99c0e0 (&type->s_umount_key#72){++++}-{4:4}, at: super_lock+0x289/0x3d0
1 lock held by syz.7.990/15675:
 #0: ffff88816b99c0e0 (&type->s_umount_key#72){++++}-{4:4}, at: super_lock+0x2d6/0x3d0
1 lock held by syz.7.990/15678:
 #0: ffff88816b99c0e0 (&type->s_umount_key#72){++++}-{4:4}, at: super_lock+0x2d6/0x3d0
1 lock held by syz.7.990/15681:
 #0: ffff88816b99c0e0 (&type->s_umount_key#72){++++}-{4:4}, at: super_lock+0x2d6/0x3d0
1 lock held by syz.7.990/15691:
 #0: ffff88816b99c0e0 (&type->s_umount_key#72){++++}-{4:4}, at: super_lock+0x2d6/0x3d0
1 lock held by syz.7.990/15699:
 #0: ffff88816b99c0e0 (&type->s_umount_key#72){++++}-{4:4}, at: super_lock+0x2d6/0x3d0
1 lock held by syz.7.990/15704:
 #0: ffff88816b99c0e0 (&type->s_umount_key#72){++++}-{4:4}, at: super_lock+0x2d6/0x3d0
1 lock held by syz.7.990/15709:
 #0: ffff88816b99c0e0 (&type->s_umount_key#72){++++}-{4:4}, at: super_lock+0x2d6/0x3d0
2 locks held by syz-executor/16980:
1 lock held by syz.0.1177/17735:
 #0: ffff88816b99c0e0 (&type->s_umount_key#72){++++}-{4:4}, at: super_lock+0x2d6/0x3d0
4 locks held by syz-executor/18482:
 #0: ffff8881af318ec0 (&hdev->req_lock){+.+.}-{4:4}, at: hci_unregister_dev+0x212/0x5a0
 #1: ffff8881af3180c0 (&hdev->lock){+.+.}-{4:4}, at: hci_dev_close_sync+0x640/0x10e0
 #2: ffffffff8fd5a428 (hci_cb_list_lock){+.+.}-{4:4}, at: hci_conn_hash_flush+0xa1/0x260
 #3: ffff888103b5eaf8 (&conn->lock#2){+.+.}-{4:4}, at: l2cap_conn_del+0x7b/0x5c0
2 locks held by syz-executor/18484:
 #0: ffffffff8f330fe8 (&ops->srcu#2){.+.+}-{0:0}, at: rtnl_link_ops_get+0x23/0x250
 #1: ffffffff8fbcda08 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0x8a1/0x1be0
3 locks held by syz.3.1223/18532:
 #0: ffff888196138ec0 (&hdev->req_lock){+.+.}-{4:4}, at: hci_unregister_dev+0x212/0x5a0
 #1: ffff8881961380c0 (&hdev->lock){+.+.}-{4:4}, at: hci_dev_close_sync+0x640/0x10e0
 #2: ffffffff8fd5a428 (hci_cb_list_lock){+.+.}-{4:4}, at: hci_conn_hash_flush+0xa1/0x260

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

NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 35 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150
 nmi_cpu_backtrace+0x274/0x2d0
 nmi_trigger_cpumask_backtrace+0x17a/0x300
 sys_info+0x135/0x170
 watchdog+0xfd9/0x1030
 kthread+0x388/0x470
 ret_from_fork+0x51e/0xb90
 ret_from_fork_asm+0x1a/0x30
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 11125 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:rcu_lockdep_current_cpu_online+0x32/0x120
Code: 53 65 8b 0d 90 06 71 11 b0 01 f7 c1 00 00 f0 00 0f 85 d5 00 00 00 83 3d 0f a2 66 0e 00 0f 84 c8 00 00 00 65 ff 05 6e 06 71 11 <e8> d9 62 03 0a 89 c3 83 f8 08 0f 83 c7 00 00 00 49 be 00 00 00 00
RSP: 0018:ffffc900042674d8 EFLAGS: 00000282
RAX: 0000000000000001 RBX: 0000000000000000 RCX: 0000000080000000
RDX: ffff88810d23ba80 RSI: ffffffff8c27be60 RDI: ffffffff8c27be20
RBP: 0000000000000000 R08: ffffea000686aaf7 R09: 1ffffd4000d0d55e
R10: dffffc0000000000 R11: fffff94000d0d55f R12: ffff8881abd73990
R13: 1ffff9200084ceac R14: ffffc90004267560 R15: ffff888175cfb700
FS:  0000555564e8e500(0000) GS:ffff8882a9460000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005565871d4131 CR3: 0000000100b88000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 rcu_read_lock_held+0x1e/0x50
 xas_reload+0x19f/0x470
 filemap_get_entry+0x1e1/0x320
 __filemap_get_folio_mpol+0x6d/0xb00
 __get_node_folio+0x20f/0xe90
 f2fs_update_inode_page+0x83/0x2e0
 f2fs_write_checkpoint+0xbee/0x26a0
 kill_f2fs_super+0x314/0x720
 deactivate_locked_super+0xbc/0x130
 cleanup_mnt+0x437/0x4d0
 task_work_run+0x1d9/0x270
 exit_to_user_mode_loop+0xed/0x480
 do_syscall_64+0x32d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fea02b9d9d7
Code: a2 c7 05 1c fd 24 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007fff472c4de8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007fea02c32050 RCX: 00007fea02b9d9d7
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff472c4ea0
RBP: 00007fff472c4ea0 R08: 00007fff472c5ea0 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff472c5f30
R13: 00007fea02c32050 R14: 000000000002eacf R15: 00007fff472c5f70
 </TASK>
