WARNING: added, moved or deleted file(s), does MAINTAINERS need updating?
#54: 
new file mode 100644

WARNING: line length of 81 exceeds 80 columns
#81: FILE: tools/testing/selftests/bpf/prog_tests/build_id.c:23:
+				printf("%02hhx", (unsigned)stack[i].build_id[j]);

WARNING: Prefer 'unsigned int' to bare use of 'unsigned'
#81: FILE: tools/testing/selftests/bpf/prog_tests/build_id.c:23:
+				printf("%02hhx", (unsigned)stack[i].build_id[j]);

WARNING: line length of 86 exceeds 80 columns
#82: FILE: tools/testing/selftests/bpf/prog_tests/build_id.c:24:
+			printf(" OFFSET = %llx", (unsigned long long)stack[i].offset);

WARNING: line length of 85 exceeds 80 columns
#105: FILE: tools/testing/selftests/bpf/prog_tests/build_id.c:47:
+	skel->links.uprobe_nofault = bpf_program__attach(skel->progs.uprobe_nofault);

WARNING: line length of 86 exceeds 80 columns
#110: FILE: tools/testing/selftests/bpf/prog_tests/build_id.c:52:
+		ASSERT_OK(system("./uprobe_multi uprobe-paged-in"), "trigger_uprobe");

WARNING: line length of 87 exceeds 80 columns
#112: FILE: tools/testing/selftests/bpf/prog_tests/build_id.c:54:
+		ASSERT_OK(system("./uprobe_multi uprobe-paged-out"), "trigger_uprobe");

WARNING: line length of 88 exceeds 80 columns
#123: FILE: tools/testing/selftests/bpf/prog_tests/build_id.c:65:
+		ASSERT_EQ(stack[0].status, BPF_STACK_BUILD_ID_VALID, "build_id_status");

WARNING: line length of 97 exceeds 80 columns
#124: FILE: tools/testing/selftests/bpf/prog_tests/build_id.c:66:
+		ASSERT_EQ(memcmp(stack[0].build_id, build_id, build_id_sz), 0, "build_id_match");

WARNING: line length of 85 exceeds 80 columns
#126: FILE: tools/testing/selftests/bpf/prog_tests/build_id.c:68:
+		ASSERT_EQ(stack[0].status, BPF_STACK_BUILD_ID_IP, "build_id_status");

WARNING: line length of 89 exceeds 80 columns
#143: FILE: tools/testing/selftests/bpf/prog_tests/build_id.c:85:
+	skel->links.uprobe_sleepable = bpf_program__attach(skel->progs.uprobe_sleepable);

WARNING: line length of 81 exceeds 80 columns
#154: FILE: tools/testing/selftests/bpf/prog_tests/build_id.c:96:
+	frame_cnt = skel->bss->res_sleepable / sizeof(struct bpf_stack_build_id);

WARNING: line length of 89 exceeds 80 columns
#159: FILE: tools/testing/selftests/bpf/prog_tests/build_id.c:101:
+	ASSERT_EQ(memcmp(stack[0].build_id, build_id, build_id_sz), 0, "build_id_match");

WARNING: line length of 84 exceeds 80 columns
#207: FILE: tools/testing/selftests/bpf/progs/test_build_id.c:25:
+	res_sleepable = bpf_get_stack(ctx, stack_sleepable, sizeof(stack_sleepable),

WARNING: Prefer __weak over __attribute__((weak))
#232: FILE: tools/testing/selftests/bpf/uprobe_multi.c:15:
+int __attribute__((weak)) uprobe(void)

WARNING: externs should be avoided in .c files
#245: FILE: tools/testing/selftests/bpf/uprobe_multi.c:92:
+extern char build_id_end[];

WARNING: Prefer __weak over __attribute__((weak))
#247: FILE: tools/testing/selftests/bpf/uprobe_multi.c:94:
+int __attribute__((weak)) trigger_uprobe(bool build_id_resident)

total: 0 errors, 17 warnings, 0 checks, 233 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 1c77b30c1ff6 ("selftests/bpf: add build ID tests") has style problems, please review.

NOTE: Ignored message types: ALLOC_SIZEOF_STRUCT BAD_REPORTED_BY_LINK CAMELCASE COMMIT_LOG_LONG_LINE 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, 17 warnings, 0 checks, 233 lines checked