On Tue, 11/05 22:09, Xu Wang wrote:
> Check the backing file for a loop during image boot, to avoid a lack or
> response or segfault.
>
> Signed-off-by: Xu Wang <gesa...@linux.vnet.ibm.com>
> ---
> blockdev.c | 6 ++++++
> 1 file changed, 6 insertions(+)
>
> diff --git a/blockdev.c b/blockdev.c
> index b260477..7c0927f 100644
> --- a/blockdev.c
> +++ b/blockdev.c
> @@ -510,6 +510,12 @@ static DriveInfo *blockdev_init(QDict *bs_opts,
>
> bdrv_flags |= ro ? 0 : BDRV_O_RDWR;
>
> + /* Add backing file loop check */
> + if (!bdrv_backing_chain_okay(file, drv ? drv->format_name : NULL)) {
> + error_report("drive_init: backing file loop check failed");
Please use error_setg("...");
Fam
> + goto err;
> + }
> +
> QINCREF(bs_opts);
> ret = bdrv_open(dinfo->bdrv, file, bs_opts, bdrv_flags, drv, &error);
>
> --
> 1.8.1.4
>
