freepointer_addr  290 mm/slub.c      	unsigned long freepointer_addr;
freepointer_addr  296 mm/slub.c      	freepointer_addr = (unsigned long)object + s->offset;
freepointer_addr  297 mm/slub.c      	probe_kernel_read(&p, (void **)freepointer_addr, sizeof(p));
freepointer_addr  298 mm/slub.c      	return freelist_ptr(s, p, freepointer_addr);