[libvirt] [PATCH] conf: don't crash on a tpm device with no backends

[Daniel P. Berrange]

On Thu, May 09, 2013 at 12:36:37PM +0200, Ján Tomko wrote:
> Print an error instead of crashing when a TPM device without
> a backend is specified.
> 
> https://bugzilla.redhat.com/show_bug.cgi?id=961252
> ---
>  src/conf/domain_conf.c | 6 ++++++
>  1 file changed, 6 insertions(+)
> 
> diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
> index d55ce6b..eb579c6 100644
> --- a/src/conf/domain_conf.c
> +++ b/src/conf/domain_conf.c
> @@ -6988,6 +6988,12 @@ virDomainTPMDefParseXML(const xmlNodePtr node,
>          goto error;
>      }
>  
> +    if (nbackends == 0) {
> +        virReportError(VIR_ERR_XML_ERROR, "%s",
> +                       _("missing TPM device backend"));
> +        goto error;
> +    }
> +
>      if (!(backend = virXMLPropString(backends[0], "type"))) {
>          virReportError(VIR_ERR_XML_ERROR, "%s",
>                         _("missing TPM device backend type"));

Add a test case please.


Daniel
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