INFO: task syz.1.352:8460 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.352       state:D stack:27880 pid:8460  tgid:8459  ppid:7958   task_flags:0x400040 flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0x14ef/0x4fb0
 schedule+0x164/0x360
 schedule_preempt_disabled+0x13/0x30
 rwsem_down_read_slowpath+0x61e/0x920
 down_read+0x99/0x2e0
 super_lock+0x2d6/0x3d0
 user_get_super+0xc8/0x120
 __se_sys_quotactl+0x516/0x990
 do_syscall_64+0xe2/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f466df9acb9
RSP: 002b:00007f466c1f6028 EFLAGS: 00000246 ORIG_RAX: 00000000000000b3
RAX: ffffffffffffffda RBX: 00007f466e215fa0 RCX: 00007f466df9acb9
RDX: 00000000000041c0 RSI: 0000200000000100 RDI: ffffffff80000902
RBP: 00007f466e008bf7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f466e216038 R14: 00007f466e215fa0 R15: 00007ffc828817e8
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/35:
 #0: ffffffff8e35a360 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
2 locks held by getty/5659:
 #0: ffff888175b0f0a0 (&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
2 locks held by syz-executor/5840:
2 locks held by syz-executor/6706:
2 locks held by syz-executor/6782:
2 locks held by syz-executor/7248:
2 locks held by syz-executor/7276:
2 locks held by syz-executor/7342:
1 lock held by syz.1.352/8460:
 #0: ffff8881139a00e0 (&type->s_umount_key#52){++++}-{4:4}, at: super_lock+0x2d6/0x3d0
1 lock held by syz.5.586/9661:
 #0: ffff88811ae920e0 (&type->s_umount_key#52){++++}-{4:4}, at: super_lock+0x2d6/0x3d0
2 locks held by syz.0.623/9856:

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

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+0xf90/0xfe0
 kthread+0x726/0x8b0
 ret_from_fork+0x51b/0xa40
 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: 7248 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:__sanitizer_cov_trace_pc+0x10/0x70
Code: de 5b e9 03 c6 5b 00 cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 04 24 65 48 8b 0d e8 e6 0c 11 <65> 8b 15 09 e7 0c 11 81 e2 00 01 ff 00 74 11 81 fa 00 01 00 00 75
RSP: 0018:ffffc900053674c8 EFLAGS: 00000246
RAX: ffffffff8b7629b3 RBX: ffff888107b8b9c0 RCX: ffff888109af3a80
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000002
RBP: ffff888107b8b9c0 R08: ffffffff81fb935a R09: ffffffff8e35a360
R10: ffffc900053675a0 R11: fffff52000a6ceb7 R12: ffffc90005367592
R13: dffffc0000000000 R14: ffffea00043f7700 R15: 000000000000000f
FS:  0000555569f18500(0000) GS:ffff8882a9928000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2654de0ad8 CR3: 000000016a424000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 xas_load+0x593/0x5b0
 filemap_get_entry+0x185/0x320
 __filemap_get_folio_mpol+0x6d/0xb00
 f2fs_grab_cache_folio+0x2e/0x380
 __get_node_folio+0x1a0/0x1540
 f2fs_update_inode_page+0x82/0x190
 f2fs_write_checkpoint+0xbd5/0x2490
 kill_f2fs_super+0x308/0x710
 deactivate_locked_super+0xbc/0x130
 cleanup_mnt+0x437/0x4d0
 task_work_run+0x1d9/0x270
 exit_to_user_mode_loop+0xed/0x480
 do_syscall_64+0x2b7/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa55e19bf17
Code: a2 c7 05 7c 96 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:00007ffd0a9101d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007fa55e20471f RCX: 00007fa55e19bf17
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd0a910290
RBP: 00007ffd0a910290 R08: 00007ffd0a911290 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd0a911320
R13: 00007fa55e20471f R14: 0000000000024cfc R15: 00007ffd0a911360
 </TASK>
