diff options
Diffstat (limited to 'kernel/bpf/mprog.c')
| -rw-r--r-- | kernel/bpf/mprog.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/kernel/bpf/mprog.c b/kernel/bpf/mprog.c index 007d98c799e2..1394168062e8 100644 --- a/kernel/bpf/mprog.c +++ b/kernel/bpf/mprog.c @@ -401,14 +401,16 @@ int bpf_mprog_query(const union bpf_attr *attr, union bpf_attr __user *uattr, struct bpf_mprog_cp *cp; struct bpf_prog *prog; const u32 flags = 0; + u32 id, count = 0; + u64 revision = 1; int i, ret = 0; - u32 id, count; - u64 revision; if (attr->query.query_flags || attr->query.attach_flags) return -EINVAL; - revision = bpf_mprog_revision(entry); - count = bpf_mprog_total(entry); + if (entry) { + revision = bpf_mprog_revision(entry); + count = bpf_mprog_total(entry); + } if (copy_to_user(&uattr->query.attach_flags, &flags, sizeof(flags))) return -EFAULT; if (copy_to_user(&uattr->query.revision, &revision, sizeof(revision))) |