The Error ** argument must be NULL, &error_abort, &error_fatal, or a
pointer to a variable containing NULL. Passing an argument of the
latter kind twice without clearing it in between is wrong: if the
first call sets an error, it no longer points to NULL for the second
call.
qmp_xen_colo_do_checkpoint() passes @errp first to
replication_do_checkpoint_all(), and then to
colo_notify_filters_event(). If both fail, this will trip the
assertion in error_setv().
Similar code in secondary_vm_do_failover() calls
colo_notify_filters_event() only after replication_do_checkpoint_all()
succeeded. Do the same here.
Fixes: 0e8818f023616677416840d6ddc880db8de3c967
Cc: Zhang Chen <chen.zh...@intel.com>
Cc: zhanghailiang <zhang.zhanghaili...@huawei.com>
Signed-off-by: Markus Armbruster <arm...@redhat.com>
Reviewed-by: zhanghailiang <zhang.zhanghaili...@huawei.com>
Reviewed-by: Philippe Mathieu-Daudé <phi...@redhat.com>
Reviewed-by: Zhang Chen <chen.zh...@intel.com>
---
migration/colo.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/migration/colo.c b/migration/colo.c
index a54ac84f41..1b3493729b 100644
--- a/migration/colo.c
+++ b/migration/colo.c
@@ -263,7 +263,13 @@ ReplicationStatus *qmp_query_xen_replication_status(Error
**errp)
void qmp_xen_colo_do_checkpoint(Error **errp)
{
- replication_do_checkpoint_all(errp);
+ Error *err = NULL;
+
+ replication_do_checkpoint_all(&err);
+ if (err) {
+ error_propagate(errp, err);
+ return;
+ }
/* Notify all filters of all NIC to do checkpoint */
colo_notify_filters_event(COLO_EVENT_CHECKPOINT, errp);
}
--
2.21.1
