INFO: task syz.8.1122:16054 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.8.1122      state:D stack:21704 pid:16054 tgid:16053 ppid:15439  task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0x17d9/0x56c0
 schedule+0x164/0x360
 schedule_preempt_disabled+0x13/0x30
 rwsem_down_read_slowpath+0x6ba/0x920
 down_read+0x9c/0x330
 super_lock+0x2d6/0x3d0
 __iterate_supers+0x120/0x240
 __ia32_sys_sync+0xa0/0x120
 do_syscall_64+0x174/0x580
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f802179ce59
RSP: 002b:00007f802264e028 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00007f8021a15fa0 RCX: 00007f802179ce59
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f8021a15fa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8021a16038 R14: 00007f8021a15fa0 R15: 00007ffeb8529728
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/34:
 #0: ffffffff8e959c20 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
3 locks held by udevd/5057:
2 locks held by getty/5435:
 #0: ffff888111f9e0a0 (&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
3 locks held by syz-executor/10081:
4 locks held by syz-executor/11255:
2 locks held by syz-executor/11475:
1 lock held by syz.8.1122/16054:
 #0: ffff8881a2fc40d8 (&type->s_umount_key#57){++++}-{4:4}, at: super_lock+0x2d6/0x3d0
4 locks held by kworker/1:2/16237:
1 lock held by syz.2.1180/16462:
 #0: ffff8881a2fc40d8 (&type->s_umount_key#57){++++}-{4:4}
, at: super_lock+0x2d6/0x3d0
1 lock held by syz.2.1180/16463:
 #0: ffff8881a2fc40d8 (&type->s_umount_key#57){++++}-{4:4}, at: super_lock+0x2d6/0x3d0
1 lock held by syz.2.1180/16464:
 #0: ffff8881a2fc40d8 (&type->s_umount_key#57){++++}-{4:4}, at: super_lock+0x2d6/0x3d0
1 lock held by syz.0.1185/16493:
 #0: ffff8881134c80d8 (&type->s_umount_key#57){++++}-{4:4}, at: super_lock+0x2d6/0x3d0
4 locks held by syz-executor/16575:
1 lock held by syz.6.1324/17695:
 #0: ffffffff8e95ff28 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x38d/0x770
3 locks held by syz.9.1325/17699:
1 lock held by dhcpcd-run-hook/17703:

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

NMI backtrace for cpu 0
CPU: 0 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+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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 11475 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+0x4da/0x2cf0
Code: 00 00 00 41 0f 94 c4 41 80 f4 03 eb 16 41 83 be 84 0b 00 00 00 41 0f 94 c4 45 00 e4 41 80 c4 03 49 89 ed 41 3b 9e 98 0b 00 00 <8b> 6c 24 08 0f 8d d2 00 00 00 4c 63 fb 4b 8d 04 bf 49 8d 1c c6 48
RSP: 0018:ffffc900043ff338 EFLAGS: 00000093
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00000000ffffffff
RDX: 0000000000000003 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff8881692929b0 R08: ffffffff8205461d R09: 0000000000000000
R10: 0000000000000000 R11: ffffffff8e959c20 R12: ffffffffffffff05
R13: ffff8881692929b0 R14: ffff888169291dc0 R15: 0000000000000000
FS:  000055558ab22500(0000) GS:ffff8882a921c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007feb4775ffb5 CR3: 00000001682b6000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 lock_acquire+0x106/0x350
 filemap_get_entry+0xe9/0x3f0
 __filemap_get_folio_mpol+0x71/0x1000
 __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: 0033:0x7f7ef6d9e097
Code: a2 c7 05 5c 06 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:00007ffdfc0b2fa8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f7ef6e322ca RCX: 00007f7ef6d9e097
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffdfc0b3060
RBP: 00007ffdfc0b3060 R08: 00007ffdfc0b4060 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffdfc0b40f0
R13: 00007f7ef6e322ca R14: 00000000000493a1 R15: 00007ffdfc0b4130
 </TASK>
