INFO: task syz.7.1409:13717 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.7.1409      state:D stack:27496 pid:13717 tgid:13716 ppid:12990  task_flags:0x400040 flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0x15dd/0x52d0
 schedule+0x164/0x360
 schedule_preempt_disabled+0x13/0x30
 rwsem_down_read_slowpath+0x61e/0x920
 down_read+0x99/0x2e0
 super_lock+0x2d6/0x3d0
 __iterate_supers+0x126/0x290
 __se_sys_quotactl+0x3a7/0x9e0
 do_syscall_64+0x14d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff6b339c819
RSP: 002b:00007ff6b4201028 EFLAGS: 00000246 ORIG_RAX: 00000000000000b3
RAX: ffffffffffffffda RBX: 00007ff6b3615fa0 RCX: 00007ff6b339c819
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff80000100
RBP: 00007ff6b3432c91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ff6b3616038 R14: 00007ff6b3615fa0 R15: 00007ffdd8d85648
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/34:
 #0: ffffffff8e75e5e0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
2 locks held by getty/5636:
 #0: ffff88816a7650a0 (&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
4 locks held by syz-executor/9195:
1 lock held by syz.7.1409/13717:
 #0: ffff888119a040e0 (&type->s_umount_key#82){++++}-{4:4}, at: super_lock+0x2d6/0x3d0
1 lock held by syz.5.1444/14032:
 #0: ffff888119a040e0 (&type->s_umount_key#82){++++}-{4:4}, at: super_lock+0x2d6/0x3d0
1 lock held by syz.5.1444/14033:
 #0: ffff888119a040e0 (&type->s_umount_key#82){++++}-{4:4}, at: super_lock+0x2d6/0x3d0
1 lock held by syz.5.1444/14035:
 #0: ffff888119a040e0 (&type->s_umount_key#82){++++}-{4:4}, at: super_lock+0x2d6/0x3d0
1 lock held by syz.4.1830/16102:
 #0: ffff888119a040e0 (&type->s_umount_key#82){++++}-{4:4}, at: super_lock+0x2d6/0x3d0
2 locks held by syz.8.1962/16935:
 #0: ffff8881a712e420 (sb_writers#35){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90
 #1: ffff8881b7f90848 (&sb->s_type->i_mutex_key#36){+.+.}-{4:4}, at: chown_common+0x35e/0x6b0

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

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/0x300
 sys_info+0x135/0x170
 watchdog+0xfd9/0x1030
 kthread+0x388/0x470
 ret_from_fork+0x51e/0xb90
 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: 9195 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_acquire+0x46a/0x2cf0
Code: 0b 00 00 41 8d 4c 24 ff 83 f9 ff 41 bd ff ff ff ff 44 0f 4c e9 41 ff c5 41 8d 5c 24 01 49 ff cc 89 d9 83 c1 fe 78 40 45 89 e7 <41> 81 e7 ff ff ff 7f 83 f9 31 73 1d 4b 8d 0c bf 41 8b 8c ce 78 0b
RSP: 0018:ffffc90003ac7350 EFLAGS: 00000057
RAX: 0000000000020007 RBX: 0000000000000002 RCX: 0000000000000000
RDX: 0000000000000003 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff88816d964650 R08: ffffffff8200ce1c R09: ffffffff8e75e5e0
R10: 0000000000000406 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: ffff88816d963a80 R15: 0000000000000000
FS:  000055558c60a500(0000) GS:ffff88818de57000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f32433e92f8 CR3: 00000001bb87e000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 lock_acquire+0xf0/0x2e0
 folio_try_get+0x38/0x340
 filemap_get_entry+0x1d5/0x320
 __filemap_get_folio_mpol+0x6d/0xb00
 __get_node_folio+0x20f/0xe90
 f2fs_update_inode_page+0x83/0x2e0
 f2fs_write_checkpoint+0xbee/0x26a0
 kill_f2fs_super+0x314/0x720
 deactivate_locked_super+0xbc/0x130
 cleanup_mnt+0x437/0x4d0
 task_work_run+0x1d9/0x270
 exit_to_user_mode_loop+0xed/0x480
 do_syscall_64+0x32d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f876ad9da57
Code: a2 c7 05 9c fc 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:00007ffeff267628 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f876ae32048 RCX: 00007f876ad9da57
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffeff2676e0
RBP: 00007ffeff2676e0 R08: 00007ffeff2686e0 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffeff268770
R13: 00007f876ae32048 R14: 00000000000359a1 R15: 00007ffeff2687b0
 </TASK>
