--- kernel/bpf/syscall.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c index 4e50c0bfdb7d..14c2cfe6ef38 100644 --- a/kernel/bpf/syscall.c +++ b/kernel/bpf/syscall.c @@ -719,6 +719,10 @@ int bpf_get_file_flag(int flags) offsetof(union bpf_attr, CMD##_LAST_FIELD) - \ sizeof(attr->CMD##_LAST_FIELD)) != NULL +#define CHECK_ATTR_TAIL(attr, field) \ + (memchr_inv((void *)(attr) + offsetofend(typeof(*attr), field), 0, \ + sizeof(*(attr)) - offsetofend(typeof(*attr), field)) != NULL ? -EINVAL : 0) + /* dst and src must have at least "size" number of bytes. * Return strlen on success and < 0 on error. */ -- 2.30.2
