>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 fen...@smartx.com<mailto:fen...@smartx.com> Reviewed-by: Raphael Norwitz <raphael.norw...@nutanix.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 >
