build_id_parse_nofault
int build_id_parse_nofault(struct vm_area_struct *vma, unsigned char *build_id, __u32 *size);
: build_id_parse_nofault(vma, build_id, NULL);
build_id_parse_nofault(vma, mmap_event->build_id, &mmap_event->build_id_size);