INFO: task syz.0.472:9346 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.472       state:D stack:25176 pid:9346  tgid:9345  ppid:8682   task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0x17b4/0x5680
 schedule+0x164/0x360
 schedule_preempt_disabled+0x13/0x30
 rwsem_down_read_slowpath+0x6d9/0x940
 down_read+0x99/0x2e0
 super_lock+0x2d6/0x3d0
 __iterate_supers+0x126/0x250
 __ia32_sys_sync+0xa0/0x120
 do_syscall_64+0x15f/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7feb5db9cdd9
RSP: 002b:00007feb5bdf6028 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00007feb5de15fa0 RCX: 00007feb5db9cdd9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007feb5de15fa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007feb5de16038 R14: 00007feb5de15fa0 R15: 00007ffd53ba2388
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/33:
 #0: ffffffff8e95cd60 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
2 locks held by udevd/5059:
2 locks held by getty/5437:
 #0: ffff888116fdb0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc900034732e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45c/0x13a0
1 lock held by udevd/6526:
2 locks held by syz-executor/7257:
1 lock held by syz.0.472/9346:
 #0: ffff8881a99ee0d8 (&type->s_umount_key#58){++++}-{4:4}, at: super_lock+0x2d6/0x3d0
1 lock held by syz.7.686/11505:
 #0: ffff8881a99ee0d8 (&type->s_umount_key#58){++++}-{4:4}, at: super_lock+0x2d6/0x3d0
1 lock held by syz.8.854/12687:
 #0: ffff8881a99ee0d8 (&type->s_umount_key#58){++++}-{4:4}, at: super_lock+0x2d6/0x3d0

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

NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 33 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+0xfd3/0x1030
 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: 7257 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:mark_lock+0x2f/0x190
Code: 41 55 41 54 53 8b 46 20 89 c1 81 e1 00 00 03 00 83 f9 01 bb 09 00 00 00 83 db 00 83 fa 08 0f 45 da bd 01 00 00 00 89 d9 d3 e5 <25> ff 1f 00 00 48 0f a3 05 04 16 9f 12 73 10 48 69 c0 c8 00 00 00
RSP: 0018:ffffc90004def228 EFLAGS: 00000006
RAX: 00000000000508dd RBX: 0000000000000009 RCX: 0000000000000009
RDX: 0000000000000008 RSI: ffff888165f42960 RDI: ffff888165f41d80
RBP: 0000000000000200 R08: ffffffff843ac54c R09: ffff88817050d938
R10: ffffc90004def574 R11: fffff520009bdeb0 R12: 0000000000000004
R13: ffff888165f42960 R14: ffff888165f41d80 R15: 0000000000000002
FS:  000055558ecec500(0000) GS:ffff8882a928c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff515de8158 CR3: 000000016bd8c000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 __lock_acquire+0x6b5/0x2cf0
 lock_acquire+0x106/0x350
 down_read+0x47/0x2e0
 f2fs_get_node_info+0x12c/0x1e20
 read_node_folio+0x221/0x410
 __get_node_folio+0x3ca/0xdd0
 f2fs_update_inode_page+0x83/0x2e0
 f2fs_write_checkpoint+0xbee/0x26a0
 kill_f2fs_super+0x314/0x730
 deactivate_locked_super+0xbc/0x130
 cleanup_mnt+0x437/0x4d0
 task_work_run+0x1d9/0x270
 exit_to_user_mode_loop+0xed/0x480
 do_syscall_64+0x33e/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ffa8839e017
Code: a2 c7 05 dc 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:00007fff3d316108 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007ffa88432120 RCX: 00007ffa8839e017
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff3d3161c0
RBP: 00007fff3d3161c0 R08: 00007fff3d3171c0 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff3d317250
R13: 00007ffa88432120 R14: 000000000002d92a R15: 00007fff3d317290
 </TASK>
