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-rw-r--r--drivers/block/nbd.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index 6463d0e8d0ce..87b0b78249da 100644
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -1217,6 +1217,14 @@ static struct socket *nbd_get_socket(struct nbd_device *nbd, unsigned long fd,
if (!sock)
return NULL;
+ if (!sk_is_tcp(sock->sk) &&
+ !sk_is_stream_unix(sock->sk)) {
+ dev_err(disk_to_dev(nbd->disk), "Unsupported socket: should be TCP or UNIX.\n");
+ *err = -EINVAL;
+ sockfd_put(sock);
+ return NULL;
+ }
+
if (sock->ops->shutdown == sock_no_shutdown) {
dev_err(disk_to_dev(nbd->disk), "Unsupported socket: shutdown callout must be supported.\n");
*err = -EINVAL;