WARNING: line length of 86 exceeds 80 columns
#72: FILE: tools/testing/selftests/bpf/prog_tests/tailcalls.c:1196:
+	int err, map_fd, prog_fd, main_data_fd, fentry_data_fd, fexit_data_fd, i, val;

CHECK: Alignment should match open parenthesis
#81: FILE: tools/testing/selftests/bpf/prog_tests/tailcalls.c:1205:
+	LIBBPF_OPTS(bpf_test_run_opts, topts,
+		.data_in = buff,

WARNING: line length of 93 exceeds 80 columns
#100: FILE: tools/testing/selftests/bpf/prog_tests/tailcalls.c:1224:
+		fentry_obj = bpf_object__open_file("tailcall_bpf2bpf_hierarchy_fentry.bpf.o",

WARNING: line length of 83 exceeds 80 columns
#127: FILE: tools/testing/selftests/bpf/prog_tests/tailcalls.c:1251:
+		prog_array = bpf_object__find_map_by_name(fentry_obj, "jmp_table");

WARNING: line length of 83 exceeds 80 columns
#166: FILE: tools/testing/selftests/bpf/prog_tests/tailcalls.c:1290:
+		fentry_obj = bpf_object__open_file("tailcall_bpf2bpf_fentry.bpf.o",

WARNING: line length of 81 exceeds 80 columns
#190: FILE: tools/testing/selftests/bpf/prog_tests/tailcalls.c:1314:
+		fexit_obj = bpf_object__open_file("tailcall_bpf2bpf_fexit.bpf.o",

CHECK: Alignment should match open parenthesis
#234: FILE: tools/testing/selftests/bpf/prog_tests/tailcalls.c:1358:
+		if (!ASSERT_GE(fentry_data_fd, 0,
+				  "find tailcall_bpf2bpf_fentry.bss map fd"))

CHECK: Alignment should match open parenthesis
#251: FILE: tools/testing/selftests/bpf/prog_tests/tailcalls.c:1375:
+		if (!ASSERT_GE(fexit_data_fd, 0,
+				  "find tailcall_bpf2bpf_fexit.bss map fd"))

WARNING: Possible repeated word: 'entry'
#301: FILE: tools/testing/selftests/bpf/prog_tests/tailcalls.c:1425:
+ *         subprog --tailcall-> entry
+ * entry <

WARNING: added, moved or deleted file(s), does MAINTAINERS need updating?
#395: 
new file mode 100644

WARNING: externs should be avoided in .c files
#446: FILE: tools/testing/selftests/bpf/progs/tailcall_bpf2bpf_hierarchy2.c:7:
+int classifier_1(struct __sk_buff *skb);

CHECK: No space is necessary after a cast
#455: FILE: tools/testing/selftests/bpf/progs/tailcall_bpf2bpf_hierarchy2.c:16:
+		[0] = (void *) &classifier_0,

CHECK: No space is necessary after a cast
#456: FILE: tools/testing/selftests/bpf/progs/tailcall_bpf2bpf_hierarchy2.c:17:
+		[1] = (void *) &classifier_1,

WARNING: Use of volatile is usually wrong: see Documentation/process/volatile-considered-harmful.rst
#500: FILE: tools/testing/selftests/bpf/progs/tailcall_bpf2bpf_hierarchy2.c:61:
+	volatile int ret = 0;

CHECK: No space is necessary after a cast
#530: FILE: tools/testing/selftests/bpf/progs/tailcall_bpf2bpf_hierarchy3.c:15:
+		[0] = (void *) &classifier_0,

CHECK: No space is necessary after a cast
#541: FILE: tools/testing/selftests/bpf/progs/tailcall_bpf2bpf_hierarchy3.c:26:
+		[0] = (void *) &classifier_0,

WARNING: Use of volatile is usually wrong: see Documentation/process/volatile-considered-harmful.rst
#569: FILE: tools/testing/selftests/bpf/progs/tailcall_bpf2bpf_hierarchy3.c:54:
+	volatile int ret = 0;

CHECK: Please don't use multiple blank lines
#617: FILE: tools/testing/selftests/bpf/progs/tailcall_bpf2bpf_hierarchy_fentry.c:34:
+
+

total: 0 errors, 10 warnings, 8 checks, 549 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 ac9f268e3cd4 ("selftests/bpf: Add testcases for tailcall hierarchy fixing") 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, 10 warnings, 8 checks, 549 lines checked