This is a note to let you know that I've just added the patch titled selftests/bpf: Fix missing BUILD_BUG_ON() declaration to the 6.1-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: selftests-bpf-fix-missing-build_bug_on-declaration.patch and it can be found in the queue-6.1 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit ef41fc6ff8a445d2ecaaa799a9c8ef4f67f71a19 Author: Tony Ambardar <tony.ambardar@xxxxxxxxx> Date: Mon Jul 22 22:54:36 2024 -0700 selftests/bpf: Fix missing BUILD_BUG_ON() declaration [ Upstream commit 6495eb79ca7d15bd87c38d77307e8f9b6b7bf4ef ] Explicitly include '<linux/build_bug.h>' to fix errors seen compiling with gcc targeting mips64el/musl-libc: user_ringbuf.c: In function 'test_user_ringbuf_loop': user_ringbuf.c:426:9: error: implicit declaration of function 'BUILD_BUG_ON' [-Werror=implicit-function-declaration] 426 | BUILD_BUG_ON(total_samples <= c_max_entries); | ^~~~~~~~~~~~ cc1: all warnings being treated as errors Fixes: e5a9df51c746 ("selftests/bpf: Add selftests validating the user ringbuf") Signed-off-by: Tony Ambardar <tony.ambardar@xxxxxxxxx> Signed-off-by: Andrii Nakryiko <andrii@xxxxxxxxxx> Link: https://lore.kernel.org/bpf/b28575f9221ec54871c46a2e87612bb4bbf46ccd.1721713597.git.tony.ambardar@xxxxxxxxx Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/tools/testing/selftests/bpf/prog_tests/user_ringbuf.c b/tools/testing/selftests/bpf/prog_tests/user_ringbuf.c index 02b18d018b36a..ca81d660eb96f 100644 --- a/tools/testing/selftests/bpf/prog_tests/user_ringbuf.c +++ b/tools/testing/selftests/bpf/prog_tests/user_ringbuf.c @@ -4,6 +4,7 @@ #define _GNU_SOURCE #include <linux/compiler.h> #include <linux/ring_buffer.h> +#include <linux/build_bug.h> #include <pthread.h> #include <stdio.h> #include <stdlib.h>