diff options
| author |   Stanislav Fomichev <sdf@google.com> | 2023-04-18 15:53:39 -0700 |
|---|---|---|
| committer |   Daniel Borkmann <daniel@iogearbox.net> | 2023-04-21 17:10:34 +0200 |
| commit | 833d67ecdc5f35f1ebf59d0fccc1ce771434be9c (patch) | |
| tree | 20aa94dcd4c88a9d96bcaabd89dfd2a2bf227458 /tools/testing/selftests/bpf/progs/sockopt_sk.c | |
| parent | bpf: Don't EFAULT for getsockopt with optval=NULL (diff) | |
| download | wireguard-linux-833d67ecdc5f35f1ebf59d0fccc1ce771434be9c.tar.xz wireguard-linux-833d67ecdc5f35f1ebf59d0fccc1ce771434be9c.zip | |
selftests/bpf: Verify optval=NULL case
Make sure we get optlen exported instead of getting EFAULT.
Signed-off-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20230418225343.553806-3-sdf@google.com
Diffstat (limited to 'tools/testing/selftests/bpf/progs/sockopt_sk.c')
| -rw-r--r-- | tools/testing/selftests/bpf/progs/sockopt_sk.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/progs/sockopt_sk.c b/tools/testing/selftests/bpf/progs/sockopt_sk.c index c8d810010a94..fe1df4cd206e 100644 --- a/tools/testing/selftests/bpf/progs/sockopt_sk.c +++ b/tools/testing/selftests/bpf/progs/sockopt_sk.c @@ -32,6 +32,12 @@ int _getsockopt(struct bpf_sockopt *ctx) __u8 *optval_end = ctx->optval_end; __u8 *optval = ctx->optval; struct sockopt_sk *storage; + struct bpf_sock *sk; + + /* Bypass AF_NETLINK. */ + sk = ctx->sk; + if (sk && sk->family == AF_NETLINK) + return 1; /* Make sure bpf_get_netns_cookie is callable. */ @@ -131,6 +137,12 @@ int _setsockopt(struct bpf_sockopt *ctx) __u8 *optval_end = ctx->optval_end; __u8 *optval = ctx->optval; struct sockopt_sk *storage; + struct bpf_sock *sk; + + /* Bypass AF_NETLINK. */ + sk = ctx->sk; + if (sk && sk->family == AF_NETLINK) + return 1; /* Make sure bpf_get_netns_cookie is callable. */ |