[PULL 2/5] vdpa: Fix file descriptor leak on get features error

From: Laurent Vivier <laurent@vivier.eu>
To: qemu-devel@nongnu.org
Cc: qemu-trivial@nongnu.org, "Laurent Vivier" <laurent@vivier.eu>,
	"Eugenio Pérez" <eperezma@redhat.com>,
	"Laurent Vivier" <lvivier@redhat.com>,
	"Michael S . Tsirkin" <mst@redhat.com>
Subject: [PULL 2/5] vdpa: Fix file descriptor leak on get features error
Date: Thu,  4 Aug 2022 21:22:13 +0200	[thread overview]
Message-ID: <20220804192216.1958922-3-laurent@vivier.eu> (raw)
In-Reply-To: <20220804192216.1958922-1-laurent@vivier.eu>

From: Eugenio Pérez <eperezma@redhat.com>

File descriptor vdpa_device_fd is not free in the case of returning
error from vhost_vdpa_get_features. Fixing it by making all errors go to
the same error path.

Resolves: Coverity CID 1490785
Fixes: 8170ab3f43 ("vdpa: Extract get features part from vhost_vdpa_get_max_queue_pairs")

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Reviewed-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Message-Id: <20220802112447.249436-2-eperezma@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
---
 net/vhost-vdpa.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c
index 6abad276a61a..303447a68e8b 100644
--- a/net/vhost-vdpa.c
+++ b/net/vhost-vdpa.c
@@ -566,7 +566,7 @@ int net_init_vhost_vdpa(const Netdev *netdev, const char *name,
     g_autofree NetClientState **ncs = NULL;
     g_autoptr(VhostIOVATree) iova_tree = NULL;
     NetClientState *nc;
-    int queue_pairs, r, i, has_cvq = 0;
+    int queue_pairs, r, i = 0, has_cvq = 0;
 
     assert(netdev->type == NET_CLIENT_DRIVER_VHOST_VDPA);
     opts = &netdev->u.vhost_vdpa;
@@ -582,7 +582,7 @@ int net_init_vhost_vdpa(const Netdev *netdev, const char *name,
 
     r = vhost_vdpa_get_features(vdpa_device_fd, &features, errp);
     if (unlikely(r < 0)) {
-        return r;
+        goto err;
     }
 
     queue_pairs = vhost_vdpa_get_max_queue_pairs(vdpa_device_fd, features,
-- 
2.37.1


