EXEC_SIZE
EXEC_SIZE, FOLL_WRITE);
if (copied < EXEC_SIZE)
u8 stack_area[EXEC_SIZE];
u32 *kmalloc_area = kmalloc(EXEC_SIZE, GFP_KERNEL);
u32 *vmalloc_area = vmalloc(EXEC_SIZE);
static u8 data_area[EXEC_SIZE];
memcpy(dst, do_nothing_ptr, EXEC_SIZE);
(unsigned long)dst + EXEC_SIZE);