From 9b6abdcfae4401f8078f883d6eca6463c0bfbd68 Mon Sep 17 00:00:00 2001 From: Pan Nengyuan Date: Tue, 10 Mar 2020 14:46:40 +0800 Subject: [PATCH] qom-qmp-cmds: fix two memleaks in qmp_object_add MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit 'type/id' forgot to free in qmp_object_add, this patch fix that. The leak stack: Direct leak of 84 byte(s) in 6 object(s) allocated from: #0 0x7fe2a5ebf768 in __interceptor_malloc (/lib64/libasan.so.5+0xef768) #1 0x7fe2a5044445 in g_malloc (/lib64/libglib-2.0.so.0+0x52445) #2 0x7fe2a505dd92 in g_strdup (/lib64/libglib-2.0.so.0+0x6bd92) #3 0x56344954e692 in qmp_object_add /mnt/sdb/qemu-new/qemu_test/qemu/qom/qom-qmp-cmds.c:258 #4 0x563449960f5a in do_qmp_dispatch /mnt/sdb/qemu-new/qemu_test/qemu/qapi/qmp-dispatch.c:132 #5 0x563449960f5a in qmp_dispatch /mnt/sdb/qemu-new/qemu_test/qemu/qapi/qmp-dispatch.c:175 #6 0x563449498a30 in monitor_qmp_dispatch /mnt/sdb/qemu-new/qemu_test/qemu/monitor/qmp.c:145 #7 0x56344949a64f in monitor_qmp_bh_dispatcher /mnt/sdb/qemu-new/qemu_test/qemu/monitor/qmp.c:234 #8 0x563449a92a3a in aio_bh_call /mnt/sdb/qemu-new/qemu_test/qemu/util/async.c:136 Direct leak of 54 byte(s) in 6 object(s) allocated from: #0 0x7fe2a5ebf768 in __interceptor_malloc (/lib64/libasan.so.5+0xef768) #1 0x7fe2a5044445 in g_malloc (/lib64/libglib-2.0.so.0+0x52445) #2 0x7fe2a505dd92 in g_strdup (/lib64/libglib-2.0.so.0+0x6bd92) #3 0x56344954e6c4 in qmp_object_add /mnt/sdb/qemu-new/qemu_test/qemu/qom/qom-qmp-cmds.c:267 #4 0x563449960f5a in do_qmp_dispatch /mnt/sdb/qemu-new/qemu_test/qemu/qapi/qmp-dispatch.c:132 #5 0x563449960f5a in qmp_dispatch /mnt/sdb/qemu-new/qemu_test/qemu/qapi/qmp-dispatch.c:175 #6 0x563449498a30 in monitor_qmp_dispatch /mnt/sdb/qemu-new/qemu_test/qemu/monitor/qmp.c:145 #7 0x56344949a64f in monitor_qmp_bh_dispatcher /mnt/sdb/qemu-new/qemu_test/qemu/monitor/qmp.c:234 #8 0x563449a92a3a in aio_bh_call /mnt/sdb/qemu-new/qemu_test/qemu/util/async.c:136 Fixes: 5f07c4d60d091320186e7b0edaf9ed2cc16b2d1e Reported-by: Euler Robot Signed-off-by: Pan Nengyuan Message-Id: <20200310064640.5059-1-pannengyuan@huawei.com> Reviewed-by: Daniel P. Berrangé Acked-by: Igor Mammedov Signed-off-by: Kevin Wolf --- qom/qom-qmp-cmds.c | 16 ++++++---------- 1 file changed, 6 insertions(+), 10 deletions(-) diff --git a/qom/qom-qmp-cmds.c b/qom/qom-qmp-cmds.c index 49db926fcc..435193b036 100644 --- a/qom/qom-qmp-cmds.c +++ b/qom/qom-qmp-cmds.c @@ -247,26 +247,22 @@ void qmp_object_add(QDict *qdict, QObject **ret_data, Error **errp) QDict *pdict; Visitor *v; Object *obj; - const char *type; - const char *id; + g_autofree char *type = NULL; + g_autofree char *id = NULL; - type = qdict_get_try_str(qdict, "qom-type"); + type = g_strdup(qdict_get_try_str(qdict, "qom-type")); if (!type) { error_setg(errp, QERR_MISSING_PARAMETER, "qom-type"); return; - } else { - type = g_strdup(type); - qdict_del(qdict, "qom-type"); } + qdict_del(qdict, "qom-type"); - id = qdict_get_try_str(qdict, "id"); + id = g_strdup(qdict_get_try_str(qdict, "id")); if (!id) { error_setg(errp, QERR_MISSING_PARAMETER, "id"); return; - } else { - id = g_strdup(id); - qdict_del(qdict, "id"); } + qdict_del(qdict, "id"); props = qdict_get(qdict, "props"); if (props) { -- 2.11.0