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[Qemu-devel] [PATCH 2/8] virtio-blk: Fix virtio-blk-s390 to require driv
From: |
Markus Armbruster |
Subject: |
[Qemu-devel] [PATCH 2/8] virtio-blk: Fix virtio-blk-s390 to require drive |
Date: |
Tue, 6 Jul 2010 14:37:43 +0200 |
Move the check from virtio_blk_init_pci(), where it protects only
virtio-blk-pci, to virtio_blk_init(). Without that, virtio-blk-s390
initializes without a drive. I figure that can lead to null pointer
dereferences.
Signed-off-by: Markus Armbruster <address@hidden>
---
hw/virtio-blk.c | 6 ++++++
hw/virtio-pci.c | 4 ----
2 files changed, 6 insertions(+), 4 deletions(-)
diff --git a/hw/virtio-blk.c b/hw/virtio-blk.c
index 0bd57b5..2de1a5a 100644
--- a/hw/virtio-blk.c
+++ b/hw/virtio-blk.c
@@ -12,6 +12,7 @@
*/
#include <qemu-common.h>
+#include "qemu-error.h"
#include "virtio-blk.h"
#ifdef __linux__
# include <scsi/sg.h>
@@ -490,6 +491,11 @@ VirtIODevice *virtio_blk_init(DeviceState *dev, BlockConf
*conf)
static int virtio_blk_id;
DriveInfo *dinfo;
+ if (!conf->bs) {
+ error_report("virtio-blk-pci: drive property not set");
+ return NULL;
+ }
+
s = (VirtIOBlock *)virtio_common_init("virtio-blk", VIRTIO_ID_BLOCK,
sizeof(struct virtio_blk_config),
sizeof(VirtIOBlock));
diff --git a/hw/virtio-pci.c b/hw/virtio-pci.c
index c6edcc2..a4d6d6b 100644
--- a/hw/virtio-pci.c
+++ b/hw/virtio-pci.c
@@ -547,10 +547,6 @@ static int virtio_blk_init_pci(PCIDevice *pci_dev)
proxy->class_code != PCI_CLASS_STORAGE_OTHER)
proxy->class_code = PCI_CLASS_STORAGE_SCSI;
- if (!proxy->block.bs) {
- error_report("virtio-blk-pci: drive property not set");
- return -1;
- }
vdev = virtio_blk_init(&pci_dev->qdev, &proxy->block);
if (!vdev) {
return -1;
--
1.6.6.1