[Qemu-devel] [PATCH] qapi: fix memory leak in QmpOutputVisitor

[Pino Toscano <ptoscano@redhat.com>]

qmp_output_start_struct() and qmp_output_start_list() create a new
QObject (QDict, QList) and push it to the stack of the QmpOutputVisitor,
where it is saved as 'value'.  When freeing the iterator in
qmp_output_free(), these values are never freed properly.

The simple solution is to qobject_decref() them.
---
 qapi/qmp-output-visitor.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/qapi/qmp-output-visitor.c b/qapi/qmp-output-visitor.c
index 9e3b67c..eedf256 100644
--- a/qapi/qmp-output-visitor.c
+++ b/qapi/qmp-output-visitor.c
@@ -220,6 +220,7 @@ static void qmp_output_free(Visitor *v)
     while (!QSLIST_EMPTY(&qov->stack)) {
         e = QSLIST_FIRST(&qov->stack);
         QSLIST_REMOVE_HEAD(&qov->stack, node);
+        qobject_decref(e->value);
         g_free(e);
     }
 
-- 
2.7.4