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diff -urN lua/lauxlib.c APM/libraries/AP_Scripting/lua/src/lauxlib.c
--- lua/lauxlib.c	2022-12-14 08:41:37.443587208 +1100
+++ APM/libraries/AP_Scripting/lua/src/lauxlib.c	2022-12-14 10:11:20.343728284 +1100
@@ -32,7 +32,6 @@
 #define MAX_SIZET	((size_t)(~(size_t)0))
 #endif
 
-
 /*
 ** {======================================================

tridge

/*
  create a thread that checks for ECC errors in flash. We disable
  fault IRQs in the thread and monitor it from the main thread. If it
  doesn't complete in 1s then erase flash This is the only way I've
  found to check for ECC errors without causing a bus fault or
  unconditionally erasing flash
 */
struct ecccheck {
    const uint32_t *start;
    uint32_t size;

tridge

/*
  create a thread that checks for ECC errors in flash. We disable
  fault IRQs in the thread and monitor it from the main thread. If it
  doesn't complete in 1s then erase flash This is the only way I've
  found to check for ECC errors without causing a bus fault or
  unconditionally erasing flash
 */
struct ecccheck {
    const uint32_t *start;
    uint32_t size;

tridge

/*
  create a thread that checks for ECC errors in flash. We disable
  fault IRQs in the thread and monitor it from the main thread. If it
  doesn't complete in 1s then erase flash This is the only way I've
  found to check for ECC errors without causing a bus fault or
  unconditionally erasing flash
 */
struct ecccheck {
    const uint32_t *start;
    uint32_t size;

tridge

void check_ecc_errors(void)
{
    auto *dma = dmaStreamAlloc(STM32_DMA_STREAM_ID(1, 1), 0, nullptr, nullptr);
    uint32_t buf[32];
    uint32_t ofs = 0;
    while (ofs < BOARD_FLASH_SIZE*1024 && FLASH->SR1 == 0 && FLASH->SR2 == 0) {
        __disable_fault_irq();
        dmaStartMemCopy(dma,
                        STM32_DMA_CR_PL(0) | STM32_DMA_CR_PSIZE_BYTE |
                        STM32_DMA_CR_MSIZE_BYTE,