On the domain startup, this function is called to dump some info about the CPUs. At the beginning of the function we check if we aren't running older qemu which is not exposing the CPUs via 'qom-list'. However, we are not checking for even older qemus, which throw 'CommandNotFound' error. Signed-off-by: Michal Privoznik <mprivozn(a)redhat.com&gt; --- src/qemu/qemu_monitor_json.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) diff --git a/src/qemu/qemu_monitor_json.c b/src/qemu/qemu_monitor_json.c index e716fb3..ec3b958 100644 --- a/src/qemu/qemu_monitor_json.c +++ b/src/qemu/qemu_monitor_json.c @@ -5528,11 +5528,13 @@ qemuMonitorJSONGetCPUx86Data(qemuMonitorPtr mon, goto cleanup; /* check if device exists */ - if ((data = virJSONValueObjectGet(reply, "error")) && - STREQ_NULLABLE(virJSONValueObjectGetString(data, "class"), - "DeviceNotFound")) { - ret = -2; - goto cleanup; + if ((data = virJSONValueObjectGet(reply, "error"))) { + const char *klass = virJSONValueObjectGetString(data, "class"); + if (STREQ_NULLABLE(klass, "DeviceNotFound") || + STREQ_NULLABLE(klass, "CommandNotFound")) { + ret = -2; + goto cleanup; + } } if (qemuMonitorJSONCheckError(cmd, reply)) -- 1.8.3.2