[PATCH 2/4] virtiofsd: fv_create_listen_socket error path socket leak

Dr. David Alan Gilbert (git) posted 4 patches 6 years ago
Maintainers: Stefan Hajnoczi <stefanha@redhat.com>, "Dr. David Alan Gilbert" <dgilbert@redhat.com>
[PATCH 2/4] virtiofsd: fv_create_listen_socket error path socket leak
Posted by Dr. David Alan Gilbert (git) 6 years ago
From: "Dr. David Alan Gilbert" <dgilbert@redhat.com>

If we fail when bringing up the socket we can leak the listen_fd;
in practice the daemon will exit so it's not really a problem.

Fixes: Coverity CID 1413121
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
---
 tools/virtiofsd/fuse_virtio.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tools/virtiofsd/fuse_virtio.c b/tools/virtiofsd/fuse_virtio.c
index 80a6e929df..dd1c605dbf 100644
--- a/tools/virtiofsd/fuse_virtio.c
+++ b/tools/virtiofsd/fuse_virtio.c
@@ -916,6 +916,7 @@ static int fv_create_listen_socket(struct fuse_session *se)
     old_umask = umask(0077);
     if (bind(listen_sock, (struct sockaddr *)&un, addr_len) == -1) {
         fuse_log(FUSE_LOG_ERR, "vhost socket bind: %m\n");
+        close(listen_sock);
         umask(old_umask);
         return -1;
     }
@@ -923,6 +924,7 @@ static int fv_create_listen_socket(struct fuse_session *se)
 
     if (listen(listen_sock, 1) == -1) {
         fuse_log(FUSE_LOG_ERR, "vhost socket listen: %m\n");
+        close(listen_sock);
         return -1;
     }
 
-- 
2.24.1


Re: [PATCH 2/4] virtiofsd: fv_create_listen_socket error path socket leak
Posted by Philippe Mathieu-Daudé 6 years ago
On 2/4/20 12:04 PM, Dr. David Alan Gilbert (git) wrote:
> From: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
> 
> If we fail when bringing up the socket we can leak the listen_fd;
> in practice the daemon will exit so it's not really a problem.
> 
> Fixes: Coverity CID 1413121
> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
> ---
>   tools/virtiofsd/fuse_virtio.c | 2 ++
>   1 file changed, 2 insertions(+)
> 
> diff --git a/tools/virtiofsd/fuse_virtio.c b/tools/virtiofsd/fuse_virtio.c
> index 80a6e929df..dd1c605dbf 100644
> --- a/tools/virtiofsd/fuse_virtio.c
> +++ b/tools/virtiofsd/fuse_virtio.c
> @@ -916,6 +916,7 @@ static int fv_create_listen_socket(struct fuse_session *se)
>       old_umask = umask(0077);
>       if (bind(listen_sock, (struct sockaddr *)&un, addr_len) == -1) {
>           fuse_log(FUSE_LOG_ERR, "vhost socket bind: %m\n");
> +        close(listen_sock);
>           umask(old_umask);
>           return -1;
>       }
> @@ -923,6 +924,7 @@ static int fv_create_listen_socket(struct fuse_session *se)
>   
>       if (listen(listen_sock, 1) == -1) {
>           fuse_log(FUSE_LOG_ERR, "vhost socket listen: %m\n");
> +        close(listen_sock);
>           return -1;
>       }
>   
> 

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>