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Bugfix: Handle error if VM Generation ID device not present

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This was crashing due to NULL-pointer dereference

QMP Test case:
==============

(QEMU) query-vm-generation-id
{"error": {"class": "GenericError", "desc": "VM Generation ID device not
found"}}

HMP Test case:
==============
virsh # qemu-monitor-command --hmp 3 info vm-generation-id
VM Generation ID device not found

Signed-off-by: Ben Warren <ben@skyportsystems.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
This commit is contained in:
Ben Warren 2017-03-02 13:36:50 -08:00 committed by Michael S. Tsirkin
parent d84f714eaf
commit 72d9196f1e
2 changed files with 4 additions and 1 deletions
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4
hmp.c
View File

@ -2608,9 +2608,11 @@ void hmp_hotpluggable_cpus(Monitor *mon, const QDict *qdict)
void hmp_info_vm_generation_id(Monitor *mon, const QDict *qdict)
{
GuidInfo *info = qmp_query_vm_generation_id(NULL);
Error *err = NULL;
GuidInfo *info = qmp_query_vm_generation_id(&err);
if (info) {
monitor_printf(mon, "%s\n", info->guid);
}
hmp_handle_error(mon, &err);
qapi_free_GuidInfo(info);
}

1
hw/acpi/vmgenid.c
View File

@ -248,6 +248,7 @@ GuidInfo *qmp_query_vm_generation_id(Error **errp)
Object *obj = find_vmgenid_dev();
if (!obj) {
error_setg(errp, "VM Generation ID device not found");
return NULL;
}
vms = VMGENID(obj);