INFO: task syz.3.359:9100 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.359       state:D stack:27648 pid:9100  tgid:9099  ppid:7288   task_flags:0x400040 flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0x1798/0x4cc0
 schedule+0x165/0x360
 schedule_preempt_disabled+0x13/0x30
 rwsem_down_read_slowpath+0x5fd/0x8f0
 down_read+0x98/0x2e0
 super_lock+0x2a9/0x3b0
 __iterate_supers+0x126/0x290
 __se_sys_quotactl+0x353/0x950
 do_syscall_64+0xfa/0xfa0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9b9f38eec9
RSP: 002b:00007f9b9d5ee038 EFLAGS: 00000246 ORIG_RAX: 00000000000000b3
RAX: ffffffffffffffda RBX: 00007f9b9f5e5fa0 RCX: 00007f9b9f38eec9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff80000100
RBP: 00007f9b9f411f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f9b9f5e6038 R14: 00007f9b9f5e5fa0 R15: 00007ffd0f118f48
 </TASK>

Showing all locks held in the system:
4 locks held by kworker/u8:1/13:
3 locks held by kworker/u9:0/26:
 #0: ffff888100089948 ((wq_completion)events_unbound#2){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0
 #1: ffffc90000a17ba0 ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0
 #2: ffffffff8f4e0888 (rtnl_mutex){+.+.}-{4:4}, at: linkwatch_event+0xe/0x60
1 lock held by khungtaskd/34:
 #0: ffffffff8e13d320 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
2 locks held by kworker/u9:2/54:
2 locks held by dhcpcd/5556:
 #0: ffff88816d73f6e0 (nlk_cb_mutex-ROUTE){+.+.}-{4:4}, at: __netlink_dump_start+0xfe/0x7e0
 #1: ffffffff8f4e0888 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dumpit+0x92/0x200
2 locks held by getty/5638:
 #0: ffff888173bbe0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc9000356e2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400
3 locks held by syz-executor/5815:
1 lock held by syz.3.359/9100:
 #0: ffff8881b9bbc0e0 (&type->s_umount_key#78){++++}-{4:4}, at: super_lock+0x2a9/0x3b0
1 lock held by syz.0.412/9511:
 #0: ffff8881b9bbc0e0 (&type->s_umount_key#78){++++}-{4:4}, at: super_lock+0x2a9/0x3b0
1 lock held by syz.4.563/10895:
 #0: ffff8881b9bbc0e0 (&type->s_umount_key#78){++++}-{4:4}, at: super_lock+0x2a9/0x3b0
1 lock held by syz.0.650/11696:
 #0: ffff8881b9bbc0e0 (&type->s_umount_key#78){++++}-{4:4}, at: super_lock+0x2a9/0x3b0
1 lock held by syz.9.717/12018:
 #0: ffff8881b9bbc0e0 (&type->s_umount_key#78){++++}-{4:4}, at: super_lock+0x2a9/0x3b0
1 lock held by syz.3.778/12359:
 #0: ffff8881b9bbc0e0 (&type->s_umount_key#78){++++}-{4:4}, at: super_lock+0x2a9/0x3b0
7 locks held by syz-executor/12747:
 #0: ffff888115412420 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x211/0xb30
 #1: ffff8881bc928888 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1de/0x540
 #2: ffff88810be812d8 (kn->active#48){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x231/0x540
 #3: ffffffff8ed794e8 (nsim_bus_dev_list_lock){+.+.}-{4:4}, at: del_device_store+0xd1/0x360
 #4: ffff88801f80f0e8 (&dev->mutex){....}-{4:4}, at: device_release_driver_internal+0xb6/0x800
 #5: ffff888027230250 (&devlink->lock_key#22){+.+.}-{4:4}, at: nsim_drv_remove+0x50/0x160
 #6: ffffffff8f4e0888 (rtnl_mutex){+.+.}-{4:4}, at: unregister_netdevice_notifier_net+0x8d/0x2a0
2 locks held by syz-executor/12775:
 #0: ffffffff8ec731c0 (&ops->srcu#2){.+.+}-{0:0}, at: rtnl_link_ops_get+0x23/0x250
 #1: ffffffff8f4e0888 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0x8e9/0x1c80
1 lock held by syz.2.826/12861:
 #0: ffffffff8e142db8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x3b9/0x730

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

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 34 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+0x189/0x250
 nmi_cpu_backtrace+0x39e/0x3d0
 nmi_trigger_cpumask_backtrace+0x17a/0x300
 watchdog+0xf60/0xfa0
 kthread+0x711/0x8a0
 ret_from_fork+0x4bc/0x870
 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: 5815 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:__lock_acquire+0x6c9/0xd20
Code: 08 00 00 00 e8 88 25 00 00 45 31 ff 85 c0 0f 84 f5 05 00 00 83 3d c6 66 ff 17 00 75 13 48 63 44 24 20 48 0f a3 05 37 d7 fb 11 <0f> 83 15 05 00 00 31 ed 48 8b 3c 24 4c 8b bf 20 0b 00 00 48 83 7c
RSP: 0018:ffffc900047a73d8 EFLAGS: 00000047
RAX: 0000000000000ae2 RBX: ffff88810d031d00 RCX: ffffffff934243c0
RDX: 0000000000000008 RSI: ffff88810d032880 RDI: ffff88810d031d00
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8413d589
R10: ffffc900047a75f4 R11: fffff520008f4ec0 R12: 0000000000000004
R13: 0000000000000004 R14: ffff88810d032880 R15: 0000000000000000
FS:  00005555696e6500(0000) GS:ffff88818e70f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9b9d117d60 CR3: 000000001eb6c000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 lock_acquire+0x120/0x360
 down_read+0x46/0x2e0
 f2fs_get_node_info+0x119/0x1480
 read_node_folio+0x20a/0x3f0
 __get_node_folio+0x22a/0x14f0
 f2fs_update_inode_page+0x82/0x190
 f2fs_write_checkpoint+0xb4d/0x2440
 kill_f2fs_super+0x2cc/0x6d0
 deactivate_locked_super+0xbc/0x130
 cleanup_mnt+0x425/0x4c0
 task_work_run+0x1d4/0x260
 exit_to_user_mode_loop+0xe9/0x130
 do_syscall_64+0x2bd/0xfa0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f4b033901f7
Code: a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 0f 1f 44 00 00 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 a8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007ffedcbb97e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f4b03411d7d RCX: 00007f4b033901f7
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffedcbb98a0
RBP: 00007ffedcbb98a0 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffedcbba930
R13: 00007f4b03411d7d R14: 0000000000012aff R15: 00007ffedcbba970
 </TASK>
