hostmem-file: fix memory leak

Signed-off-by: Gonglei <arei.gonglei@huawei.com>
Message-Id: <1456998223-12356-5-git-send-email-arei.gonglei@huawei.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

diff --git a/backends/hostmem-file.c b/backends/hostmem-file.c
index c70f268d6fe80fd73918591ab3e0339e79875b1e..b17a1f10a2d5c0491b9798cdfaebc73c45dfbc6d 100644 (file)
--- a/backends/hostmem-file.c
+++ b/backends/hostmem-file.c
@@ -52,11 +52,14 @@ file_backend_memory_alloc(HostMemoryBackend *backend, Error **errp)
     error_setg(errp, "-mem-path not supported on this host");
 #else
     if (!memory_region_size(&backend->mr)) {
+        gchar *path;
         backend->force_prealloc = mem_prealloc;
+        path = object_get_canonical_path(OBJECT(backend));
         memory_region_init_ram_from_file(&backend->mr, OBJECT(backend),
-                                 object_get_canonical_path(OBJECT(backend)),
+                                 path,
                                  backend->size, fb->share,
                                  fb->mem_path, errp);
+        g_free(path);
     }
 #endif
 }