CHECK: Alignment should match open parenthesis
#53: FILE: tools/testing/selftests/bpf/prog_tests/stacktrace_map.c:32:
+	CHECK(err, "compare_stack_ips stackmap vs. stack_amap",
+		"err %d errno %d\n", err, errno);

WARNING: line length of 84 exceeds 80 columns
#95: FILE: tools/testing/selftests/bpf/prog_tests/stacktrace_map.c:78:
+	check_stackmap(control_map_fd, stackid_hmap_fd, stackmap_fd, stack_amap_fd);

WARNING: Missing a blank line after declarations
#106: FILE: tools/testing/selftests/bpf/prog_tests/stacktrace_map.c:89:
+	int control_map_fd, stackid_hmap_fd, stackmap_fd, stack_amap_fd;
+	LIBBPF_OPTS(bpf_kprobe_multi_opts, opts,

CHECK: Alignment should match open parenthesis
#107: FILE: tools/testing/selftests/bpf/prog_tests/stacktrace_map.c:90:
+	LIBBPF_OPTS(bpf_kprobe_multi_opts, opts,
+		.retprobe = retprobe

WARNING: line length of 84 exceeds 80 columns
#133: FILE: tools/testing/selftests/bpf/prog_tests/stacktrace_map.c:116:
+	check_stackmap(control_map_fd, stackid_hmap_fd, stackmap_fd, stack_amap_fd);

total: 0 errors, 3 warnings, 2 checks, 179 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 e8d6eb817322 ("selftests/bpf: Add stacktrace test for kprobe multi") 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, 3 warnings, 2 checks, 179 lines checked