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stm32mp: fix array bounds checks

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Fix index check against array size. If that index is equal
to the array size, we'll access one-past-the-end of the array.

Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
This commit is contained in:
Patrice Chotard
2026-02-10 15:57:35 +01:00
parent 71433d2771
commit 5d5195073c
1 changed files with 2 additions and 2 deletions
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4
arch/arm/mach-stm32mp/stm32mp2/cpu.c
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@@ -148,7 +148,7 @@ static void setup_boot_mode(void)
__func__, boot_ctx, boot_mode, instance, forced_mode);
switch (boot_mode & TAMP_BOOT_DEVICE_MASK) {
case BOOT_SERIAL_UART:
if (instance > ARRAY_SIZE(serial_addr))
if (instance >= ARRAY_SIZE(serial_addr))
break;
/* serial : search associated node in devicetree */
sprintf(cmd, "serial@%x", serial_addr[instance]);
@@ -178,7 +178,7 @@ static void setup_boot_mode(void)
break;
case BOOT_FLASH_SD:
case BOOT_FLASH_EMMC:
if (instance > ARRAY_SIZE(sdmmc_addr))
if (instance >= ARRAY_SIZE(sdmmc_addr))
break;
/* search associated sdmmc node in devicetree */
sprintf(cmd, "mmc@%x", sdmmc_addr[instance]);