System hang at 'mem_cgroup_css_online()'

Issue

• System hang in the below call trace.

[1882482.153486] INFO: task systemd:1 blocked for more than 122 seconds.
[1882482.153495]       Tainted: G           OE     -------  ---  5.14.0-427.127.1.el9_4.x86_64 #1
[1882482.153497] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[1882482.153498] task:systemd         state:D stack:0     pid:1     ppid:0      flags:0x00000002
[1882482.153503] Call Trace:
[1882482.153504]  <TASK>
[1882482.153507]  __schedule+0x21b/0x550
[1882482.153516]  schedule+0x2d/0x70
[1882482.153518]  schedule_preempt_disabled+0x11/0x20
[1882482.153520]  rwsem_down_write_slowpath+0x23d/0x500
[1882482.153524]  down_write+0x58/0x60
[1882482.153527]  alloc_shrinker_info+0x1f/0x100
[1882482.153535]  mem_cgroup_css_online+0x98/0x1c0
[1882482.153539]  online_css+0x19/0x70
[1882482.153544]  cgroup_apply_control_enable+0x1f7/0x2f0
[1882482.153550]  cgroup_mkdir+0xe3/0x1a0
[1882482.153553]  kernfs_iop_mkdir+0x54/0x80
[1882482.153559]  vfs_mkdir+0xfe/0x1d0
[1882482.153564]  do_mkdirat+0x131/0x160
[1882482.153569]  __x64_sys_mkdir+0x48/0x70
[1882482.153571]  do_syscall_64+0x59/0x90
[1882482.153579]  ? sched_clock+0xc/0x30
[1882482.153585]  ? sched_clock_cpu+0x9/0xc0
[1882482.153591]  ? irqtime_account_irq+0x3c/0xb0
[1882482.153596]  ? clear_bhb_loop+0x35/0x90
[1882482.153599]  ? clear_bhb_loop+0x35/0x90
[1882482.153600]  ? clear_bhb_loop+0x35/0x90
[1882482.153601]  ? clear_bhb_loop+0x35/0x90
[1882482.153602]  ? clear_bhb_loop+0x35/0x90
[1882482.153604]  entry_SYSCALL_64_after_hwframe+0x77/0xe1
[1882482.153610] RIP: 0033:0x7f7c1f0fd62b
[1882482.153636] RSP: 002b:00007fffddb08d98 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
[1882482.153639] RAX: ffffffffffffffda RBX: 0000560818b92dc0 RCX: 00007f7c1f0fd62b
[1882482.153641] RDX: 0000000000000000 RSI: 00000000000001ed RDI: 000056081872aca0
[1882482.153642] RBP: 00007fffddb08dd0 R08: 000000000000001b R09: 0000000000000000
[1882482.153644] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[1882482.153645] R13: 00000000000003a9 R14: 00007f7c1f699cdf R15: 00000000000003a9
[1882482.153648]  </TASK>