WARNING: Missing a blank line after declarations
#73: FILE: tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c:775:
+	struct bpf_link **link = get_link(skel, idx);
+	LIBBPF_OPTS(bpf_uprobe_multi_opts, opts);

CHECK: Alignment should match open parenthesis
#85: FILE: tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c:787:
+	*link = bpf_program__attach_uprobe_multi(prog, 0, "/proc/self/exe",
+						"uprobe_consumer_test",

WARNING: line length of 88 exceeds 80 columns
#120: FILE: tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c:822:
+			if (!ASSERT_OK(uprobe_attach(skel, idx), "uprobe_attach_after"))

WARNING: Prefer using '"%s...", __func__' to using 'consumer_test', this function's name, in a string
#132: FILE: tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c:834:
+	printf("consumer_test before %lu after %lu\n", before, after);

WARNING: line length of 89 exceeds 80 columns
#137: FILE: tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c:839:
+			if (!ASSERT_OK(uprobe_attach(skel, idx), "uprobe_attach_before"))

WARNING: line length of 94 exceeds 80 columns
#162: FILE: tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c:864:
+			 * to trigger uretprobe consumer, the uretprobe needs to be installed,

WARNING: line length of 96 exceeds 80 columns
#163: FILE: tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c:865:
+			 * which means one of the 'return' uprobes was alive when probe was hit:

WARNING: line length of 96 exceeds 80 columns
#167: FILE: tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c:869:
+			 * in addition if 'after' state removes everything that was installed in

WARNING: line length of 96 exceeds 80 columns
#168: FILE: tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c:870:
+			 * 'before' state, then uprobe kernel object goes away and return uprobe

WARNING: line length of 94 exceeds 80 columns
#169: FILE: tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c:871:
+			 * is not installed and we won't hit it even if it's in 'after' state.

WARNING: line length of 98 exceeds 80 columns
#171: FILE: tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c:873:
+			unsigned long had_uretprobes  = before & 0b1100; // is uretprobe installed

WARNING: line length of 94 exceeds 80 columns
#172: FILE: tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c:874:
+			unsigned long probe_preserved = before & after;  // did uprobe go away

WARNING: line length of 86 exceeds 80 columns
#174: FILE: tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c:876:
+			if (had_uretprobes && probe_preserved && test_bit(idx, after))

WARNING: added, moved or deleted file(s), does MAINTAINERS need updating?
#254: 
new file mode 100644

total: 0 errors, 13 warnings, 1 checks, 268 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 838079a9813e ("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, 268 lines checked