Re: [PATCH v3 1/2] daemon: Fix domain name leak in error path

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On Thu, Apr 20, 2017 at 09:41:46AM +0800, Wang King wrote:
Domain name duplicated in make_nonnull_domain, but not freed when virTypedParamsSerialize
return negative.
---
daemon/remote.c | 11 +++++++++--
1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/daemon/remote.c b/daemon/remote.c
index 1610fea..5d726f4 100644
--- a/daemon/remote.c
+++ b/daemon/remote.c
@@ -1067,7 +1067,7 @@ remoteRelayDomainEventTunable(virConnectPtr conn,
                                (virTypedParameterRemotePtr *) &data.params.params_val,
                                &data.params.params_len,
                                VIR_TYPED_PARAM_STRING_OKAY) < 0)
-        return -1;
+        goto error;

    remoteDispatchObjectEventSend(callback->client, remoteProgram,
                                  REMOTE_PROC_DOMAIN_EVENT_CALLBACK_TUNABLE,
@@ -1075,6 +1075,10 @@ remoteRelayDomainEventTunable(virConnectPtr conn,
                                  &data);

    return 0;
+ error:
+    VIR_FREE(data.dom.name);
+    return -1;
+

Why are you creating a label just for this when it's used from just one
place?  It's similar thing you're getting rid of in the second patch.
That doesn't make sense.  If you just add the VIR_FREE() before the
return (and properly bracket it, of course), then that's fine.

}


@@ -1207,13 +1211,16 @@ remoteRelayDomainEventJobCompleted(virConnectPtr conn,
                                (virTypedParameterRemotePtr *) &data.params.params_val,
                                &data.params.params_len,
                                VIR_TYPED_PARAM_STRING_OKAY) < 0)
-        return -1;
+        goto error;

    remoteDispatchObjectEventSend(callback->client, remoteProgram,
                                  REMOTE_PROC_DOMAIN_EVENT_CALLBACK_JOB_COMPLETED,
                                  (xdrproc_t)xdr_remote_domain_event_callback_job_completed_msg,
                                  &data);
    return 0;
+ error:
+    VIR_FREE(data.dom.name);
+    return -1;
}


--
2.8.3


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