save_boot_params_default() in cpu.c accesses uninitialized stack area when it compiled with -O0 (not optimized).
Signed-off-by: Tetsuyuki Kobayashi <k...@kmckk.co.jp> --- arch/arm/cpu/armv7/cpu.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/arm/cpu/armv7/cpu.c b/arch/arm/cpu/armv7/cpu.c index c6fa8ef..6104cb2 100644 --- a/arch/arm/cpu/armv7/cpu.c +++ b/arch/arm/cpu/armv7/cpu.c @@ -37,8 +37,11 @@ #include <asm/cache.h> #include <asm/armv7.h> +__attribute__((naked)) /* don't save anything to stack even if compiled with -O0 */ void save_boot_params_default(u32 r0, u32 r1, u32 r2, u32 r3) { + /* stack is not yet initialized */ + asm("bx lr"); } void save_boot_params(u32 r0, u32 r1, u32 r2, u32 r3) -- 1.7.9.5 _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot