From 9f0fc98145218ff8f50d8cfa3b393785056c53e1 Mon Sep 17 00:00:00 2001 From: Michal Luczaj Date: Mon, 18 Nov 2024 22:03:41 +0100 Subject: bpf, vsock: Fix poll() missing a queue When a verdict program simply passes a packet without redirection, sk_msg is enqueued on sk_psock::ingress_msg. Add a missing check to poll(). Fixes: 634f1a7110b4 ("vsock: support sockmap") Signed-off-by: Michal Luczaj Reviewed-by: Stefano Garzarella Reviewed-by: Luigi Leonardi Link: https://lore.kernel.org/r/20241118-vsock-bpf-poll-close-v1-1-f1b9669cacdc@rbox.co Signed-off-by: Alexei Starovoitov Acked-by: John Fastabend --- net/vmw_vsock/af_vsock.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'net/vmw_vsock') diff --git a/net/vmw_vsock/af_vsock.c b/net/vmw_vsock/af_vsock.c index 25b28b1434f5..725da7203f2d 100644 --- a/net/vmw_vsock/af_vsock.c +++ b/net/vmw_vsock/af_vsock.c @@ -1054,6 +1054,9 @@ static __poll_t vsock_poll(struct file *file, struct socket *sock, mask |= EPOLLRDHUP; } + if (sk_is_readable(sk)) + mask |= EPOLLIN | EPOLLRDNORM; + if (sock->type == SOCK_DGRAM) { /* For datagram sockets we can read if there is something in * the queue and write as long as the socket isn't shutdown for -- cgit v1.2.3