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[Qemu-devel] [PATCH v2 1/3] qom: Don't keep error value between object_p
From: |
Eduardo Habkost |
Subject: |
[Qemu-devel] [PATCH v2 1/3] qom: Don't keep error value between object_property_parse() calls |
Date: |
Thu, 10 Jan 2019 00:02:57 -0200 |
When handling errp==NULL at object_apply_global_props(), we are
leaving the old error value in `err` after printing a warning.
This makes QEMU crash if two global properties generate warnings:
$ echo device_add rtl8139 | qemu-system-x86_64 -monitor stdio -global
rtl8139.xxx=yyy -global rtl8139.xxx=zzz
warning: can't apply global rtl8139.xxx=yyy: Property '.xxx' not found
qemu-system-x86_64: util/error.c:57: error_setv: Assertion `*errp == NULL'
failed.
Aborted (core dumped)
Fix that by making `err` go out of scope immediately after the
warn_report_err() call.
Fixes: 50545b2cc029 "qdev-props: call object_apply_global_props()"
Signed-off-by: Eduardo Habkost <address@hidden>
---
qom/object.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/qom/object.c b/qom/object.c
index aa6f3a2a71..4e5226ca12 100644
--- a/qom/object.c
+++ b/qom/object.c
@@ -372,7 +372,6 @@ static void object_post_init_with_type(Object *obj,
TypeImpl *ti)
void object_apply_global_props(Object *obj, const GPtrArray *props, Error
**errp)
{
- Error *err = NULL;
int i;
if (!props) {
@@ -381,6 +380,7 @@ void object_apply_global_props(Object *obj, const GPtrArray
*props, Error **errp
for (i = 0; i < props->len; i++) {
GlobalProperty *p = g_ptr_array_index(props, i);
+ Error *err = NULL;
if (object_dynamic_cast(obj, p->driver) == NULL) {
continue;
--
2.18.0.rc1.1.g3f1ff2140