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[PATCH] vhost-user-blk: fix the resize crash
From: |
Li Feng |
Subject: |
[PATCH] vhost-user-blk: fix the resize crash |
Date: |
Mon, 19 Sep 2022 20:18:16 +0800 |
If the os is not installed and doesn't have the virtio guest driver,
the vhost dev isn't started, so the dev->vdev is NULL.
Reproduce: mount a Win 2019 iso, go into the install ui, then resize
the virtio-blk device, qemu crash.
Signed-off-by: Li Feng <fengli@smartx.com>
---
hw/block/vhost-user-blk.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/hw/block/vhost-user-blk.c b/hw/block/vhost-user-blk.c
index 9117222456..db30bb754f 100644
--- a/hw/block/vhost-user-blk.c
+++ b/hw/block/vhost-user-blk.c
@@ -95,6 +95,10 @@ static int vhost_user_blk_handle_config_change(struct
vhost_dev *dev)
VHostUserBlk *s = VHOST_USER_BLK(dev->vdev);
Error *local_err = NULL;
+ if (!dev->started) {
+ return 0;
+ }
+
ret = vhost_dev_get_config(dev, (uint8_t *)&blkcfg,
sizeof(struct virtio_blk_config),
&local_err);
--
2.37.3
- [PATCH] vhost-user-blk: fix the resize crash,
Li Feng <=