From: David Gibson <da...@gibson.dropbear.id.au>
spapr_tce_table_finalize() can SEGV if the object was not previously
realized. In particular this can be triggered by running
qemu-system-ppc -device spapr-tce-table,?
The basic problem is that we have mismatched initialization versus
finalization: spapr_tce_table_finalize() is attempting to undo things that
are done in spapr_tce_table_realize(), not an instance_init function.
Therefore, replace spapr_tce_table_finalize() with
spapr_tce_table_unrealize().
Signed-off-by: David Gibson <da...@gibson.dropbear.id.au>
Cc: qemu-sta...@nongnu.org
Signed-off-by: Alexander Graf <ag...@suse.de>
(cherry picked from commit 5f9490de566c5b092a6cfedc3c7a37a9c9dee917)
Signed-off-by: Michael Roth <mdr...@linux.vnet.ibm.com>
---
hw/ppc/spapr_iommu.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/hw/ppc/spapr_iommu.c b/hw/ppc/spapr_iommu.c
index 6c91d8e..da47474 100644
--- a/hw/ppc/spapr_iommu.c
+++ b/hw/ppc/spapr_iommu.c
@@ -173,9 +173,9 @@ sPAPRTCETable *spapr_tce_new_table(DeviceState *owner,
uint32_t liobn,
return tcet;
}
-static void spapr_tce_table_finalize(Object *obj)
+static void spapr_tce_table_unrealize(DeviceState *dev, Error **errp)
{
- sPAPRTCETable *tcet = SPAPR_TCE_TABLE(obj);
+ sPAPRTCETable *tcet = SPAPR_TCE_TABLE(dev);
QLIST_REMOVE(tcet, list);
@@ -420,6 +420,7 @@ static void spapr_tce_table_class_init(ObjectClass *klass,
void *data)
DeviceClass *dc = DEVICE_CLASS(klass);
dc->init = spapr_tce_table_realize;
dc->reset = spapr_tce_reset;
+ dc->unrealize = spapr_tce_table_unrealize;
QLIST_INIT(&spapr_tce_tables);
@@ -435,7 +436,6 @@ static TypeInfo spapr_tce_table_info = {
.parent = TYPE_DEVICE,
.instance_size = sizeof(sPAPRTCETable),
.class_init = spapr_tce_table_class_init,
- .instance_finalize = spapr_tce_table_finalize,
};
static void register_types(void)
--
1.9.1
