[Qemu-devel] [PATCH] Fix issues affecting Xen 9pfs discovered by Coverity

[Stefano Stabellini]

Fix two resource leaks on error paths, discovered by Coverity.
Check for errors returned by fcntl, also found by Coverity.

CID:1374836
CID:1374831

Signed-off-by: Stefano Stabellini <address@hidden>

diff --git a/hw/9pfs/xen-9p-backend.c b/hw/9pfs/xen-9p-backend.c
index 9c7f41a..f75e728 100644
--- a/hw/9pfs/xen-9p-backend.c
+++ b/hw/9pfs/xen-9p-backend.c
@@ -332,12 +332,14 @@ static int xen_9pfs_connect(struct XenDevice *xendev)
         str = g_strdup_printf("ring-ref%u", i);
         if (xenstore_read_fe_int(&xen_9pdev->xendev, str,
                                  &xen_9pdev->rings[i].ref) == -1) {
+            g_free(str);
             goto out;
         }
         g_free(str);
         str = g_strdup_printf("event-channel-%u", i);
         if (xenstore_read_fe_int(&xen_9pdev->xendev, str,
                                  &xen_9pdev->rings[i].evtchn) == -1) {
+            g_free(str);
             goto out;
         }
         g_free(str);
@@ -378,7 +380,10 @@ static int xen_9pfs_connect(struct XenDevice *xendev)
         if (xen_9pdev->rings[i].evtchndev == NULL) {
             goto out;
         }
-        fcntl(xenevtchn_fd(xen_9pdev->rings[i].evtchndev), F_SETFD, 
FD_CLOEXEC);
+        if (fcntl(xenevtchn_fd(xen_9pdev->rings[i].evtchndev),
+                  F_SETFD, FD_CLOEXEC) == -1) {
+            goto out;
+        }
         xen_9pdev->rings[i].local_port = xenevtchn_bind_interdomain
                                             (xen_9pdev->rings[i].evtchndev,
                                              xendev->dom,