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[PULL,02/12] qom-hmp-cmds: fix a memleak in hmp_qom_get

Message ID 20200617183733.186168-3-dgilbert@redhat.com
State New
Headers show
Series [PULL,01/12] virtiofsd: Whitelist fchmod | expand

Commit Message

Dr. David Alan Gilbert June 17, 2020, 6:37 p.m. UTC
From: Pan Nengyuan <pannengyuan@huawei.com>

'obj' forgot to free at the end of hmp_qom_get(). Fix that.

The leak stack:
Direct leak of 40 byte(s) in 1 object(s) allocated from:
    #0 0x7f4e3a779ae8 in __interceptor_malloc (/lib64/libasan.so.5+0xefae8)
    #1 0x7f4e398f91d5 in g_malloc (/lib64/libglib-2.0.so.0+0x531d5)
    #2 0x55c9fd9a3999 in qstring_from_substr /build/qemu/src/qobject/qstring.c:45
    #3 0x55c9fd894bd3 in qobject_output_type_str /build/qemu/src/qapi/qobject-output-visitor.c:175
    #4 0x55c9fd894bd3 in qobject_output_type_str /build/qemu/src/qapi/qobject-output-visitor.c:168
    #5 0x55c9fd88b34d in visit_type_str /build/qemu/src/qapi/qapi-visit-core.c:308
    #6 0x55c9fd59aa6b in property_get_str /build/qemu/src/qom/object.c:2064
    #7 0x55c9fd5adb8a in object_property_get_qobject /build/qemu/src/qom/qom-qobject.c:38
    #8 0x55c9fd4a029d in hmp_qom_get /build/qemu/src/qom/qom-hmp-cmds.c:66

Fixes: 89cf4fe34f4
Reported-by: Euler Robot <euler.robot@huawei.com>
Signed-off-by: Pan Nengyuan <pannengyuan@huawei.com>
Message-Id: <20200603070338.7922-1-pannengyuan@huawei.com>
Reviewed-by: Li Qiang <liq3ea@gmail.com>
Tested-by: Li Qiang <liq3ea@gmail.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
 qom/qom-hmp-cmds.c | 1 +
 1 file changed, 1 insertion(+)
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diff --git a/qom/qom-hmp-cmds.c b/qom/qom-hmp-cmds.c
index 99385b6ad2..158e2d7409 100644
--- a/qom/qom-hmp-cmds.c
+++ b/qom/qom-hmp-cmds.c
@@ -71,6 +71,7 @@  void hmp_qom_get(Monitor *mon, const QDict *qdict)
+    qobject_unref(obj);
     hmp_handle_error(mon, err);