WARNING: line length of 85 exceeds 80 columns
#34: FILE: tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c:585:
+	 * We attach to 3 uprobes on 2 functions, so 2 uprobes share single function,

WARNING: Missing a blank line after declarations
#82: FILE: tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c:766:
+	struct bpf_link **link = get_link(skel, idx);
+	LIBBPF_OPTS(bpf_uprobe_multi_opts, opts);

CHECK: Alignment should match open parenthesis
#91: FILE: tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c:775:
+	*link = bpf_program__attach_uprobe_multi(prog, 0, "/proc/self/exe",
+						"uprobe_session_consumer_test",

WARNING: line length of 88 exceeds 80 columns
#126: FILE: tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c:810:
+			if (!ASSERT_OK(uprobe_attach(skel, idx), "uprobe_attach_after"))

WARNING: Prefer using '"%s...", __func__' to using 'session_consumer_test', this function's name, in a string
#138: FILE: tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c:822:
+	printf("session_consumer_test before %lu after %lu\n", before, after);

WARNING: line length of 89 exceeds 80 columns
#143: FILE: tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c:827:
+			if (!ASSERT_OK(uprobe_attach(skel, idx), "uprobe_attach_before"))

WARNING: line length of 94 exceeds 80 columns
#167: FILE: tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c:851:
+			 * to trigger uretprobe consumer, the uretprobe needs to be installed,

WARNING: line length of 96 exceeds 80 columns
#168: FILE: tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c:852:
+			 * which means one of the 'return' uprobes was alive when probe was hit:

WARNING: line length of 96 exceeds 80 columns
#172: FILE: tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c:856:
+			 * in addition if 'after' state removes everything that was installed in

WARNING: line length of 96 exceeds 80 columns
#173: FILE: tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c:857:
+			 * 'before' state, then uprobe kernel object goes away and return uprobe

WARNING: line length of 94 exceeds 80 columns
#174: FILE: tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c:858:
+			 * is not installed and we won't hit it even if it's in 'after' state.

WARNING: line length of 92 exceeds 80 columns
#176: FILE: tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c:860:
+			unsigned long installed = before & 0b1100; // is uretprobe installed

WARNING: line length of 88 exceeds 80 columns
#177: FILE: tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c:861:
+			unsigned long exists    = before & after;  // did uprobe go away

WARNING: added, moved or deleted file(s), does MAINTAINERS need updating?
#259: 
new file mode 100644

total: 0 errors, 13 warnings, 1 checks, 272 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 5a6efb56c549 ("selftests/bpf: Add uprobe multi consumers test") 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, 13 warnings, 1 checks, 272 lines checked