On Thu, 2016-11-24 at 17:31 +0100, Arnd Bergmann wrote:
> Printing a size_t requires the %zd format rather than %d:
>
> mm/z3fold.c: In function ‘init_z3fold’:
> include/linux/kern_levels.h:4:18: error: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘long unsigned int’ [-Werror=format=]
>
> Fixes: 50a50d2676c4 ("z3fold: don't fail kernel build if z3fold_header is too big")
> Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
> ---
> mm/z3fold.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/mm/z3fold.c b/mm/z3fold.c
> index e282ba073e77..66ac7a7dc934 100644
> --- a/mm/z3fold.c
> +++ b/mm/z3fold.c
> @@ -884,7 +884,7 @@ static int __init init_z3fold(void)
> {
> /* Fail the initialization if z3fold header won't fit in one chunk */
> if (sizeof(struct z3fold_header) > ZHDR_SIZE_ALIGNED) {
> - pr_err("z3fold: z3fold_header size (%d) is bigger than "
> + pr_err("z3fold: z3fold_header size (%zd) is bigger than "
> "the chunk size (%d), can't proceed\n",
> sizeof(struct z3fold_header) , ZHDR_SIZE_ALIGNED);
> return -E2BIG;
The embedded "z3fold: " prefix here should be removed
as there's a pr_fmt that also adds it.
The test looks like it should be a BUILD_BUG_ON rather
than any runtime test too.
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