[PATCH v3] ifconfig: fix double free fatal error in INET_sprint

[Denys Vlasenko]

On Tue, Feb 3, 2015 at 10:12 AM, Zheng Junling <zhengjunling at huawei.com> wrote:
> --- a/networking/interface.c
> +++ b/networking/interface.c
> @@ -92,6 +92,7 @@ static const char* FAST_FUNC INET_sprint(struct sockaddr *sap, int numeric)
>         static char *buff; /* defaults to NULL */
>
>         free(buff);
> +       buff = NULL;
>         if (sap->sa_family == 0xFFFF || sap->sa_family == 0)
>                 return "[NONE SET]";
>         buff = INET_rresolve((struct sockaddr_in *) sap, numeric, 0xffffff00);
> @@ -174,6 +175,7 @@ static const char* FAST_FUNC INET6_sprint(struct sockaddr *sap, int numeric)
>         static char *buff;
>
>         free(buff);
> +       buff = NULL;
>         if (sap->sa_family == 0xFFFF || sap->sa_family == 0)
>                 return "[NONE SET]";
>         buff = INET6_rresolve((struct sockaddr_in6 *) sap, numeric);

Thanks for finding it!
I am going for a different way to fix it: I'll just move free()
two lines down.