WARNING: line length of 88 exceeds 80 columns
#100: FILE: tools/testing/selftests/bpf/libarena/selftests/selftest.c:108:
+		ret = libarena_run_prog(bpf_program__fd(skel->progs.arena_buddy_reset));

WARNING: line length of 81 exceeds 80 columns
#165: FILE: tools/testing/selftests/bpf/libarena/selftests/st_asan_buddy.bpf.c:53:
+ * verification failures if verified with the rest of asan_test_buddy_uaf_single.

CHECK: spaces preferred around that '*' (ctx:WxV)
#167: FILE: tools/testing/selftests/bpf/libarena/selftests/st_asan_buddy.bpf.c:55:
+__weak int asan_test_buddy_byte(u8 __arena __arg_arena *mem, int i, bool freed)
                                                        ^

CHECK: Alignment should match open parenthesis
#173: FILE: tools/testing/selftests/bpf/libarena/selftests/st_asan_buddy.bpf.c:61:
+	if (freed && BUDDY_HEADER_OFF <= i &&
+		i < BUDDY_HEADER_OFF + sizeof(struct buddy_header))

WARNING: Use of volatile is usually wrong: see Documentation/process/volatile-considered-harmful.rst
#222: FILE: tools/testing/selftests/bpf/libarena/selftests/st_asan_buddy.bpf.c:110:
+	volatile u8 mem[48];

WARNING: Use of volatile is usually wrong: see Documentation/process/volatile-considered-harmful.rst
#228: FILE: tools/testing/selftests/bpf/libarena/selftests/st_asan_buddy.bpf.c:116:
+	volatile struct buddy_blob __arena *blob;

WARNING: Prefer ARRAY_SIZE(sizes)
#270: FILE: tools/testing/selftests/bpf/libarena/selftests/st_asan_buddy.bpf.c:158:
+	for (i = zero; i < sizeof(sizes) / sizeof(sizes[0]) && can_loop; i++) {

CHECK: Alignment should match open parenthesis
#274: FILE: tools/testing/selftests/bpf/libarena/selftests/st_asan_buddy.bpf.c:162:
+			arena_stdout("%s:%d Failed for size %lu", __func__,
+				   __LINE__, sizes[i]);

WARNING: Prefer ARRAY_SIZE(sizes)
#301: FILE: tools/testing/selftests/bpf/libarena/selftests/st_asan_buddy.bpf.c:189:
+	for (i = zero; i < sizeof(sizes) / sizeof(sizes[0]) && can_loop; i++) {

CHECK: Alignment should match open parenthesis
#305: FILE: tools/testing/selftests/bpf/libarena/selftests/st_asan_buddy.bpf.c:193:
+			arena_stdout("%s:%d Failed for size %lu", __func__,
+				   __LINE__, sizes[i]);

CHECK: Alignment should match open parenthesis
#336: FILE: tools/testing/selftests/bpf/libarena/selftests/st_asan_buddy.bpf.c:224:
+			arena_stdout("%s:%d Failed on iteration %d", __func__,
+				   __LINE__, i);

WARNING: line length of 87 exceeds 80 columns
#380: FILE: tools/testing/selftests/bpf/libarena/selftests/st_buddy.bpf.c:21:
+size_t __arena alloc_multiple_sizes[] = { 3, 17, 1025, 129, 16350, 333, 9, 517, 2099 };

CHECK: Alignment should match open parenthesis
#516: FILE: tools/testing/selftests/bpf/libarena/selftests/st_buddy.bpf.c:157:
+				arena_stdout("%s:%d %lx %u vs %u", __func__,
+					   __LINE__, &mem[j], mem[j], poison);

WARNING: line length of 81 exceeds 80 columns
#542: FILE: tools/testing/selftests/bpf/libarena/selftests/st_buddy.bpf.c:183:
+			arena_stdout("alignment test: alloc failed for size %lu",

CHECK: Alignment should match open parenthesis
#543: FILE: tools/testing/selftests/bpf/libarena/selftests/st_buddy.bpf.c:184:
+			arena_stdout("alignment test: alloc failed for size %lu",
+				   alignment_sizes[i]);

CHECK: Lines should not end with a '('
#550: FILE: tools/testing/selftests/bpf/libarena/selftests/st_buddy.bpf.c:191:
+			arena_stdout(

CHECK: Alignment should match open parenthesis
#587: FILE: tools/testing/selftests/bpf/prog_tests/libarena.c:14:
+static void run_libarena_test(struct libarena *skel, struct bpf_program *prog,
+		const char *name)

WARNING: line length of 88 exceeds 80 columns
#592: FILE: tools/testing/selftests/bpf/prog_tests/libarena.c:19:
+		ret = libarena_run_prog(bpf_program__fd(skel->progs.arena_buddy_reset));

CHECK: Blank lines aren't necessary before a close brace '}'
#601: FILE: tools/testing/selftests/bpf/prog_tests/libarena.c:28:
+
+}

WARNING: line length of 82 exceeds 80 columns
#617: FILE: tools/testing/selftests/bpf/prog_tests/libarena.c:44:
+	ret = libarena_run_prog(bpf_program__fd(skel->progs.arena_alloc_reserve));

CHECK: Alignment should match open parenthesis
#657: FILE: tools/testing/selftests/bpf/prog_tests/libarena_asan.c:16:
+static void run_libarena_asan_test(struct libarena_asan *skel,
+		struct bpf_program *prog, const char *name)

WARNING: line length of 88 exceeds 80 columns
#662: FILE: tools/testing/selftests/bpf/prog_tests/libarena_asan.c:21:
+		ret = libarena_run_prog(bpf_program__fd(skel->progs.arena_buddy_reset));

WARNING: line length of 82 exceeds 80 columns
#685: FILE: tools/testing/selftests/bpf/prog_tests/libarena_asan.c:44:
+	ret = libarena_run_prog(bpf_program__fd(skel->progs.arena_alloc_reserve));

CHECK: Lines should not end with a '('
#689: FILE: tools/testing/selftests/bpf/prog_tests/libarena_asan.c:48:
+	ret = libarena_asan_init(

WARNING: void function return statements are not generally useful
#727: FILE: tools/testing/selftests/bpf/prog_tests/libarena_asan.c:86:
+	return;
+}

total: 0 errors, 13 warnings, 12 checks, 656 lines checked

NOTE: For some of the reported defects, checkpatch may be able to
      mechanically convert to the typical style using --fix or --fix-inplace.

Commit 5f700f1c6312 ("selftests/bpf: Add selftests for libarena buddy allocator") has style problems, please review.

NOTE: Ignored message types: ALLOC_SIZEOF_STRUCT BAD_REPORTED_BY_LINK CAMELCASE COMMIT_LOG_LONG_LINE FILE_PATH_CHANGES GIT_COMMIT_ID MACRO_ARG_REUSE NO_AUTHOR_SIGN_OFF

NOTE: If any of the errors are false positives, please report
      them to the maintainer, see CHECKPATCH in MAINTAINERS.
total: 0 errors, 13 warnings, 12 checks, 656 lines checked