Re: [Xen-devel] [PATCH 3/3] xenstore: xs_suspend_evtchn_port: always free portstr

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Fri, 2014-01-17 at 17:34 +0000, Ian Jackson wrote:
> If portstr!=NULL but plen==0 this function would leak portstr.
> 
> Signed-off-by: Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>

With the whitespace fixed:

Acked-by: Ian Campbell <Ian.Campbell@xxxxxxxxxx>

> ---
>  tools/xenstore/xs.c |    9 ++++++---
>  1 file changed, 6 insertions(+), 3 deletions(-)
> 
> diff --git a/tools/xenstore/xs.c b/tools/xenstore/xs.c
> index a636498..9cd99eb 100644
> --- a/tools/xenstore/xs.c
> +++ b/tools/xenstore/xs.c
> @@ -1095,12 +1095,15 @@ int xs_suspend_evtchn_port(int domid)
>      portstr = xs_read(xs, XBT_NULL, path, &plen);
>      xs_daemon_close(xs);
>  
> -    if (!portstr || !plen)
> -        return -1;
> +    if (!portstr || !plen) {
> +        port = -1;
> +     goto out;
> +    }
>  
>      port = atoi(portstr);
> -    free(portstr);
>  
> +out:
> +    free(portstr);
>      return port;
>  }
>  



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