How to get process stack size from kernel mod

I'm developing a kernel mod driver and I need to get all the stack sizes of some process.

I use ZwQuerySystemInformation to find the processand then I use ZwQuerySystemInformation to get the THREAD_BASIC_INFORMATIONand then I read memory from TebBaseAddress to NT_TIB structthen I have the tib.StackLimit, tib.StackBase

if (NT_SUCCESS(PsLookupProcessByProcessId((HANDLE)process_id, &process))) {        if (NT_SUCCESS(MmCpy(process, (PVOID)info.TebBaseAddress, PsGetCurrentProcess(), &tib, sizeof(NT_TIB)))) {            //DbgPrintEx(0, 0, "StackLimit: %#010x to StackBase: %#010x \n", tib.StackLimit, tib.StackBase);            tempStackArea = { 0 };            tempStackArea.Base = (uintptr_t)tib.StackBase;            tempStackArea.Limit = (uintptr_t)tib.StackLimit;            memcpy((PVOID)((ULONG_PTR)StackAreaList + (i * sizeof(StackArea))), &tempStackArea, sizeof(StackArea));        }    }

but I don't know if the size is

tib.StackBase - tib.StackLimit

I want to read all the stack memory from tib.StackLimit to tib.StackBase and search some valueIs it okay to use it this way or it's wrong, and there's another solution?