[Qemu-devel] [PULL 05/12] pc-dimm: validate node property

["Michael S. Tsirkin" <mst@redhat.com>]

From: Hu Tao <hutao@cn.fujitsu.com>

If user specifies a node number that exceeds the available numa nodes in
emulated system for pc-dimm device, the device will report an invalid _PXM
to OSPM. Fix this by checking the node property value.

Cc: qemu-stable@nongnu.org
Signed-off-by: Hu Tao <hutao@cn.fujitsu.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
---
 hw/mem/pc-dimm.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/hw/mem/pc-dimm.c b/hw/mem/pc-dimm.c
index 08f49ed..92e276f 100644
--- a/hw/mem/pc-dimm.c
+++ b/hw/mem/pc-dimm.c
@@ -252,6 +252,11 @@ static void pc_dimm_realize(DeviceState *dev, Error **errp)
         error_setg(errp, "'" PC_DIMM_MEMDEV_PROP "' property is not set");
         return;
     }
+    if (dimm->node >= nb_numa_nodes) {
+        error_setg(errp, "'" PC_DIMM_NODE_PROP
+                   "' exceeds numa node number: %" PRId32, nb_numa_nodes);
+        return;
+    }
 }
 
 static MemoryRegion *pc_dimm_get_memory_region(PCDIMMDevice *dimm)
-- 
MST