diff options
| author | Michal Luczaj <mhal@rbox.co> | 2025-02-13 12:58:50 +0100 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2025-02-18 12:00:01 +0100 |
| commit | 857ae05549ee2542317e7084ecaa5f8536634dd9 (patch) | |
| tree | 7be39d140f3ad13f7b8926196745c21c6d01cac2 | |
| parent | 8fb5bb169d17cdd12c2dcc2e96830ed487d77a0f (diff) | |
vsock/bpf: Warn on socket without transport
In the spirit of commit 91751e248256 ("vsock: prevent null-ptr-deref in
vsock_*[has_data|has_space]"), armorize the "impossible" cases with a
warning.
Fixes: 634f1a7110b4 ("vsock: support sockmap")
Signed-off-by: Michal Luczaj <mhal@rbox.co>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
| -rw-r--r-- | net/vmw_vsock/af_vsock.c | 3 | ||||
| -rw-r--r-- | net/vmw_vsock/vsock_bpf.c | 2 |
2 files changed, 4 insertions, 1 deletions
diff --git a/net/vmw_vsock/af_vsock.c b/net/vmw_vsock/af_vsock.c index 53a081d49d28..7e3db87ae433 100644 --- a/net/vmw_vsock/af_vsock.c +++ b/net/vmw_vsock/af_vsock.c @@ -1189,6 +1189,9 @@ static int vsock_read_skb(struct sock *sk, skb_read_actor_t read_actor) { struct vsock_sock *vsk = vsock_sk(sk); + if (WARN_ON_ONCE(!vsk->transport)) + return -ENODEV; + return vsk->transport->read_skb(vsk, read_actor); } diff --git a/net/vmw_vsock/vsock_bpf.c b/net/vmw_vsock/vsock_bpf.c index f201d9eca1df..07b96d56f3a5 100644 --- a/net/vmw_vsock/vsock_bpf.c +++ b/net/vmw_vsock/vsock_bpf.c @@ -87,7 +87,7 @@ static int vsock_bpf_recvmsg(struct sock *sk, struct msghdr *msg, lock_sock(sk); vsk = vsock_sk(sk); - if (!vsk->transport) { + if (WARN_ON_ONCE(!vsk->transport)) { copied = -ENODEV; goto out; } |