evolution124 opened a new issue, #19874:
URL: https://github.com/apache/nuttx/issues/19874
### Description / Steps to reproduce the issue
1. run qemu with **backend file to simulate ram with random initialized ram
data**.
2. mmu pagetable in linker script is NONLOAD
3. mmu **qemu_rv_kernel_mappings** dose not initialize pagetable with
initial value (like zero)
4. when mmu find initialized mapping, will use none-initialized value which
cause error.
```
static void map_region(uintptr_t paddr, uintptr_t vaddr, size_t size,
uint32_t mmuflags)
{
uintptr_t alignaddr;
uintptr_t endaddr;
uintptr_t pbase;
endaddr = vaddr + size;
while (vaddr < endaddr)
{
/* See if a mapping exists ? */
/* mmu_ln_getentry will get un initialized value */
pbase = mmu_pte_to_paddr(mmu_ln_getentry(
KMM_SPBASE_IDX, KMM_SPBASE, vaddr));
```
### On which OS does this issue occur?
[OS: Windows], [OS: Linux]
### What is the version of your OS?
Ubuntu 24.04
### NuttX Version
96f440f0c068f278cc11a956c2c6cf52ff79cf01
### Issue Architecture
[Arch: risc-v]
### Issue Area
[Area: Memory Management], [Area: Board support]
### Host information
_No response_
### Verification
- [x] I have verified before submitting the report.
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