INFO: task syz.2.468:9865 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.468       state:D stack:24608 pid:9865  tgid:9864  ppid:9713   task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0x1585/0x5340
 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+0x540/0x9e0
 do_syscall_64+0x14d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa3b4f9c799
RSP: 002b:00007fa3b5dd4028 EFLAGS: 00000246 ORIG_RAX: 00000000000000b3
RAX: ffffffffffffffda RBX: 00007fa3b5215fa0 RCX: 00007fa3b4f9c799
RDX: 0000000000000000 RSI: 00002000000000c0 RDI: ffffffff80000801
RBP: 00007fa3b5032bd9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000200000000040 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fa3b5216038 R14: 00007fa3b5215fa0 R15: 00007ffe75b4ace8
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/34:
 #0: ffffffff8e7602e0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
1 lock held by syslogd/5236:
 #0: ffff88823c63ade0 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x31/0x150
2 locks held by getty/5631:
 #0: ffff8881154680a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc9000356e2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45c/0x13c0
2 locks held by syz-executor/5815:
1 lock held by udevd/5817:
 #0: ffff888167c5e3a8 (&sb->s_type->i_mutex_key#11){++++}-{4:4}, at: blkdev_llseek+0x6a/0xc0
3 locks held by syz-executor/6460:
4 locks held by syz-executor/7890:
1 lock held by syz.2.468/9865:
 #0: ffff8881167b40e0 (&type->s_umount_key#64){++++}-{4:4}, at: super_lock+0x2d6/0x3d0
1 lock held by syz.5.703/11539:
 #0: ffff88801c9520e0 (&type->s_umount_key#64){++++}-{4:4}, at: super_lock+0x2d6/0x3d0
1 lock held by syz-executor/12218:
 #0: ffffffff8e766578 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x38d/0x770
4 locks held by syz.0.874/12992:
1 lock held by udevadm/12994:

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

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/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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 7890 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:kasan_check_range+0x10/0x2c0
Code: fe 90 0f 0b cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f 40 d6 55 41 57 41 56 41 55 41 54 53 b0 01 <48> 85 f6 0f 84 ae 01 00 00 4c 8d 04 37 49 39 f8 0f 82 36 02 00 00
RSP: 0018:ffffc9000db8f4e8 EFLAGS: 00000246
RAX: ffffffff82007d01 RBX: 0000000000000018 RCX: ffffffff82007d4e
RDX: 0000000000000001 RSI: 0000000000000018 RDI: ffffc9000db8f580
RBP: 0000000000000000 R08: 0000000000000000 R09: 1ffff110357ad8a3
R10: dffffc0000000000 R11: ffffed10357ad8a4 R12: 1ffff92001b71ea8
R13: dffffc0000000000 R14: ffffc9000db8f580 R15: 000000000000000e
FS:  000055557fafb500(0000) GS:ffff8882a946c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055c3baeff108 CR3: 0000000114450000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 __asan_memset+0x22/0x50
 filemap_get_entry+0xbe/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: 0033:0x7f4c95f9d9d7
Code: a2 c7 05 1c ed 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:00007ffdb0faff78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f4c96031f90 RCX: 00007f4c95f9d9d7
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffdb0fb0030
RBP: 00007ffdb0fb0030 R08: 00007ffdb0fb1030 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffdb0fb10c0
R13: 00007f4c96031f90 R14: 0000000000023fee R15: 00007ffdb0fb1100
 </TASK>
