INFO: task syz.3.599:9104 blocked for more than 143 seconds.
      Tainted: G             L      syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.599       state:D stack:26456 pid:9104  tgid:9101  ppid:8809   task_flags:0x400040 flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0x17d9/0x56c0
 schedule+0x164/0x2b0
 schedule_preempt_disabled+0x13/0x30
 rwsem_down_write_slowpath+0x87d/0x1080
 down_write+0x1bc/0x200
 super_lock+0x289/0x3d0
 user_get_super+0xc8/0x120
 __se_sys_quotactl+0x538/0x9a0
 do_syscall_64+0x174/0x580
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc87079e0d9
RSP: 002b:00007fc8716fa028 EFLAGS: 00000246 ORIG_RAX: 00000000000000b3
RAX: ffffffffffffffda RBX: 00007fc870a25fa0 RCX: 00007fc87079e0d9
RDX: 0000000000000000 RSI: 0000200000000040 RDI: ffffffff80000200
RBP: 00007fc870835024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000200000000100 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc870a26038 R14: 00007fc870a25fa0 R15: 00007fff4d250ed8
 </TASK>

Showing all locks held in the system:
1 lock held by ksoftirqd/0/15:
1 lock held by khungtaskd/34:
 #0: ffffffff8eb59c60 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
2 locks held by getty/5425:
 #0: ffff888170dda0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc900034762e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45a/0x1360
4 locks held by syz-executor/5599:
2 locks held by syz-executor/6199:
3 locks held by kworker/1:5/6750:
 #0: ffff88810006b140 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0xa20/0x14e0
 #1: ffffc9000425fc40 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_scheduled_works+0xa20/0x14e0
 #2: ffff888172fdb250 (&data->fib_lock){+.+.}-{4:4}, at: nsim_fib_event_work+0x1fd/0x3b0
3 locks held by kworker/1:6/7377:
 #0: ffff88810006b140 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0xa20/0x14e0
 #1: ffffc90003f2fc40 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_scheduled_works+0xa20/0x14e0
 #2: ffff8881716ef250 (&data->fib_lock){+.+.}-{4:4}, at: nsim_fib_event_work+0x1fd/0x3b0
1 lock held by syz.3.599/9104:
 #0: ffff8881166880d8 (&type->s_umount_key#64){++++}-{4:4}, at: super_lock+0x289/0x3d0
2 locks held by dhcpcd/9209:
 #0: ffff8881b9d27440 (&sb->s_type->i_mutex_key#13){+.+.}-{4:4}, at: sock_close+0x82/0x220
 #1: ffffffff8eb5ff68 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x2d0/0x770
1 lock held by syz.0.641/9454:
 #0: ffff8881713420d8 (&type->s_umount_key#64){++++}-{4:4}, at: super_lock+0x289/0x3d0
1 lock held by syz.6.731/10035:
 #0: ffff8881166880d8 (&type->s_umount_key#64){++++}-{4:4}, at: super_lock+0x2d6/0x3d0
1 lock held by syz.6.731/10038:
 #0: ffff8881166880d8 (&type->s_umount_key#64){++++}-{4:4}, at: super_lock+0x2d6/0x3d0
3 locks held by kworker/u8:0/11831:
 #0: ffff888170a4c940 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0xa20/0x14e0
 #1: ffffc900086b7c40 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0xa20/0x14e0
 #2: ffffffff90027b00 (rtnl_mutex){+.+.}-{4:4}, at: addrconf_dad_work+0x116/0x15c0
4 locks held by syz.5.1066/11891:
 #0: ffffffff900983e8 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40
 #1: ffff888105eac128 (&dev->mutex){....}-{4:4}, at: devlink_get_from_attrs_lock+0x34a/0x490
 #2: ffff888105ead258 (&devlink->lock_key#20){+.+.}-{4:4}, at: devlink_get_from_attrs_lock+0x360/0x490
 #3: ffffffff90027b00 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_net_dev_lock+0x257/0x2f0
1 lock held by syz.1.1055/11903:
 #0: ffff88811be7cea0 (&hdev->req_lock){+.+.}-{4:4}, at: hci_unregister_dev+0x22a/0x5b0
1 lock held by rm/11927:

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

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 34 Comm: khungtaskd Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
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/0x380
 sys_info+0x135/0x170
 watchdog+0xfd7/0x1030
 kthread+0x388/0x470
 ret_from_fork+0x514/0xb70
 ret_from_fork_asm+0x1a/0x30
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 5599 Comm: syz-executor Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:lock_is_held_type+0x4d/0x150
Code: 79 9d 9c 07 85 c0 0f 85 d5 00 00 00 65 4c 8b 2d 81 58 9c 07 41 83 bd 9c 0b 00 00 00 0f 85 bf 00 00 00 89 f5 49 89 fe 9c 41 5c <fa> 48 c7 c7 aa 34 24 8e e8 76 1b 00 00 65 ff 05 3f 9d 9c 07 41 83
RSP: 0018:ffffc90004abf598 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 00000000ffffffff RCX: ffff888110141e00
RDX: 0000000000000000 RSI: 00000000ffffffff RDI: ffffffff8eb59d20
RBP: 00000000ffffffff R08: ffffea00044ce937 R09: 1ffffd4000899d26
R10: dffffc0000000000 R11: fffff94000899d27 R12: 0000000000000246
R13: ffff888110141e00 R14: ffffffff8eb59d20 R15: 000000000000000e
FS:  000055557fd22500(0000) GS:ffff88818d956000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa4a5abbba8 CR3: 000000016b6c4000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 __might_resched+0x86/0x4d0
 __filemap_get_folio_mpol+0xb9/0x1000
 __get_node_folio+0x20e/0xdf0
 f2fs_update_inode_page+0x9d/0x360
 f2fs_write_checkpoint+0xc4c/0x2710
 kill_f2fs_super+0x2f6/0x700
 deactivate_locked_super+0xbc/0x130
 cleanup_mnt+0x3d3/0x460
 task_work_run+0x1d9/0x270
 exit_to_user_mode_loop+0x1fa/0x730
 do_syscall_64+0x353/0x580
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f4f3639f317
Code: a2 c7 05 dc 43 25 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:00007ffe29b3b968 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f4f36434474 RCX: 00007f4f3639f317
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffe29b3ba20
RBP: 00007ffe29b3ba20 R08: 00007ffe29b3ca20 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe29b3cab0
R13: 00007f4f36434474 R14: 0000000000019e44 R15: 00007ffe29b3caf0
 </TASK>
