From 1f1949368d4ac7a18973aa83a074daf01daf97ad Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= Date: Wed, 25 Mar 2020 19:47:22 +0100 Subject: [PATCH 3/5] qmp: fix leak on callbacks that return both value and error MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Direct leak of 4120 byte(s) in 1 object(s) allocated from: #0 0x7fa114931887 in __interceptor_calloc (/lib64/libasan.so.6+0xb0887) #1 0x7fa1144ad8f0 in g_malloc0 (/lib64/libglib-2.0.so.0+0x588f0) #2 0x561e3c9c8897 in qmp_object_add /home/elmarco/src/qemu/qom/qom-qmp-cmds.c:291 #3 0x561e3cf48736 in qmp_dispatch /home/elmarco/src/qemu/qapi/qmp-dispatch.c:155 #4 0x561e3c8efb36 in monitor_qmp_dispatch /home/elmarco/src/qemu/monitor/qmp.c:145 #5 0x561e3c8f09ed in monitor_qmp_bh_dispatcher /home/elmarco/src/qemu/monitor/qmp.c:234 #6 0x561e3d08c993 in aio_bh_call /home/elmarco/src/qemu/util/async.c:136 #7 0x561e3d08d0a5 in aio_bh_poll /home/elmarco/src/qemu/util/async.c:164 #8 0x561e3d0a535a in aio_dispatch /home/elmarco/src/qemu/util/aio-posix.c:380 #9 0x561e3d08e3ca in aio_ctx_dispatch /home/elmarco/src/qemu/util/async.c:298 #10 0x7fa1144a776e in g_main_context_dispatch (/lib64/libglib-2.0.so.0+0x5276e) Signed-off-by: Marc-André Lureau Message-Id: <20200325184723.2029630-3-marcandre.lureau@redhat.com> Reviewed-by: Markus Armbruster Signed-off-by: Paolo Bonzini Signed-off-by: Zhenyu Ye --- qapi/qmp-dispatch.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/qapi/qmp-dispatch.c b/qapi/qmp-dispatch.c index 6dfdad57..a635abb9 100644 --- a/qapi/qmp-dispatch.c +++ b/qapi/qmp-dispatch.c @@ -189,6 +189,8 @@ QDict *qmp_dispatch(QmpCommandList *cmds, QObject *request, ret = do_qmp_dispatch(cmds, request, allow_oob, &err); if (err) { + /* or assert(!ret) after reviewing all handlers: */ + qobject_unref(ret); rsp = qmp_error_response(err); } else if (ret) { rsp = qdict_new(); -- 2.22.0.windows.1