Hi,
On Wed, Jul 18, 2018 at 08:23:30AM +0100, Andrew Rybchenko wrote:
> Space for string terminating NUL character should be provided to
> snprintf() to avoid the last symbol truncation.
>
> Fixes: a23bc2c4e01b ("devargs: add non-variadic parsing function")
>
> Reported-by: Ivan Malov <[email protected]>
> Signed-off-by: Andrew Rybchenko <[email protected]>
Acked-by: Gaetan Rivet <[email protected]>
> ---
> lib/librte_eal/common/eal_common_devargs.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/lib/librte_eal/common/eal_common_devargs.c
> b/lib/librte_eal/common/eal_common_devargs.c
> index a22a2002e..5ec688aab 100644
> --- a/lib/librte_eal/common/eal_common_devargs.c
> +++ b/lib/librte_eal/common/eal_common_devargs.c
> @@ -285,7 +285,7 @@ rte_devargs_parsef(struct rte_devargs *da, const char
> *format, ...)
> }
>
> va_start(ap, format);
> - vsnprintf(dev, len, format, ap);
> + vsnprintf(dev, len + 1, format, ap);
Indeed, thanks for reporting and fixing.
> va_end(ap);
>
> return rte_devargs_parse(da, dev);
> --
> 2.17.1
>
--
Gaëtan Rivet
6WIND
