From ab6075d849f4285fc730d3ae6e17418d65d09998 Mon Sep 17 00:00:00 2001 From: Li Feng Date: Mon, 19 Sep 2022 20:18:16 +0800 Subject: vhost-user-blk: fix the resize crash 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 Message-Id: <20220919121816.3252223-1-fengli@smartx.com> Reviewed-by: Raphael Norwitz Reviewed-by: Kevin Wolf Signed-off-by: Kevin Wolf --- hw/block/vhost-user-blk.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'hw') diff --git a/hw/block/vhost-user-blk.c b/hw/block/vhost-user-blk.c index 84902dd..13bf5cc 100644 --- a/hw/block/vhost-user-blk.c +++ b/hw/block/vhost-user-blk.c @@ -97,6 +97,10 @@ 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, vdev->config_len, &local_err); if (ret < 0) { -- cgit v1.1