__STACK_RND_MASK  315 arch/x86/include/asm/elf.h #define __STACK_RND_MASK(is32bit) (0x7ff)
__STACK_RND_MASK  325 arch/x86/include/asm/elf.h #define __STACK_RND_MASK(is32bit) ((is32bit) ? 0x7ff : 0x3fffff)