[Bug] counting of vsz on ps/top commands is not correct

[polarvid]

RT-Thread Version

04b77e409e8f724ec8896f106418fb089e96f3f9

Hardware Type/Architectures

cvitek, milkv duo 256

Develop Toolchain

GCC

Describe the bug

Behaviour

1. using ps or top commands to list vsz of process,
2. or directly cat /proc/self/stat

Expected

Should reflect valid status of process on procfs.

Other additional context

No response