Re: [PATCH v3 5/5] selftests/landlock: Fix format warning for __u64 in net_test

["Günther Noack" <gnoack3000@gmail.com>]

On Thu, Apr 02, 2026 at 09:26:06PM +0200, Mickaël Salaün wrote:
> On architectures where __u64 is unsigned long (e.g. powerpc64), using
> %llx to format a __u64 triggers a -Wformat warning because %llx expects
> unsigned long long.  Cast the argument to unsigned long long.
> 
> Cc: Günther Noack <gnoack@google.com>
> Cc: stable@vger.kernel.org
> Fixes: a549d055a22e ("selftests/landlock: Add network tests")
> Reported-by: kernel test robot <lkp@intel.com>
> Closes: https://lore.kernel.org/r/202604020206.62zgOTeP-lkp@intel.com/
> Signed-off-by: Mickaël Salaün <mic@digikod.net>
> ---
> 
> Changes since v2:
> - New patch.
> ---
>  tools/testing/selftests/landlock/net_test.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/tools/testing/selftests/landlock/net_test.c b/tools/testing/selftests/landlock/net_test.c
> index b34b139b3f89..4c528154ea92 100644
> --- a/tools/testing/selftests/landlock/net_test.c
> +++ b/tools/testing/selftests/landlock/net_test.c
> @@ -1356,7 +1356,7 @@ TEST_F(mini, network_access_rights)
>  					    &net_port, 0))
>  		{
>  			TH_LOG("Failed to add rule with access 0x%llx: %s",
> -			       access, strerror(errno));
> +			       (unsigned long long)access, strerror(errno));
>  		}
>  	}
>  	EXPECT_EQ(0, close(ruleset_fd));
> -- 
> 2.53.0
> 

Reviewed-by: Günther Noack <gnoack3000@gmail.com>