CHECK: No space is necessary after a cast
#27: FILE: tools/testing/selftests/bpf/bpf_kfuncs.h:79:
+extern bool bpf_session_is_return(void) __ksym;

CHECK: extern prototypes should be avoided in .h files
#27: FILE: tools/testing/selftests/bpf/bpf_kfuncs.h:79:
+extern bool bpf_session_is_return(void) __ksym;

WARNING: Missing a blank line after declarations
#48: FILE: tools/testing/selftests/bpf/prog_tests/kprobe_multi_test.c:333:
+	struct kprobe_multi_session *skel = NULL;
+	LIBBPF_OPTS(bpf_kprobe_multi_opts, opts);

WARNING: line length of 82 exceeds 80 columns
#77: FILE: tools/testing/selftests/bpf/prog_tests/kprobe_multi_test.c:362:
+	ASSERT_EQ(skel->bss->kretprobe_test1_result, 0, "kretprobe_test1_result");

WARNING: line length of 82 exceeds 80 columns
#78: FILE: tools/testing/selftests/bpf/prog_tests/kprobe_multi_test.c:363:
+	ASSERT_EQ(skel->bss->kretprobe_test2_result, 1, "kretprobe_test2_result");

WARNING: line length of 82 exceeds 80 columns
#79: FILE: tools/testing/selftests/bpf/prog_tests/kprobe_multi_test.c:364:
+	ASSERT_EQ(skel->bss->kretprobe_test3_result, 0, "kretprobe_test3_result");

WARNING: line length of 82 exceeds 80 columns
#80: FILE: tools/testing/selftests/bpf/prog_tests/kprobe_multi_test.c:365:
+	ASSERT_EQ(skel->bss->kretprobe_test4_result, 1, "kretprobe_test4_result");

WARNING: line length of 82 exceeds 80 columns
#81: FILE: tools/testing/selftests/bpf/prog_tests/kprobe_multi_test.c:366:
+	ASSERT_EQ(skel->bss->kretprobe_test5_result, 0, "kretprobe_test5_result");

WARNING: line length of 82 exceeds 80 columns
#82: FILE: tools/testing/selftests/bpf/prog_tests/kprobe_multi_test.c:367:
+	ASSERT_EQ(skel->bss->kretprobe_test6_result, 1, "kretprobe_test6_result");

WARNING: line length of 82 exceeds 80 columns
#83: FILE: tools/testing/selftests/bpf/prog_tests/kprobe_multi_test.c:368:
+	ASSERT_EQ(skel->bss->kretprobe_test7_result, 0, "kretprobe_test7_result");

WARNING: line length of 82 exceeds 80 columns
#84: FILE: tools/testing/selftests/bpf/prog_tests/kprobe_multi_test.c:369:
+	ASSERT_EQ(skel->bss->kretprobe_test8_result, 1, "kretprobe_test8_result");

WARNING: added, moved or deleted file(s), does MAINTAINERS need updating?
#102: 
new file mode 100644

WARNING: externs should be avoided in .c files
#116: FILE: tools/testing/selftests/bpf/progs/kprobe_multi_session.c:10:
+extern const void bpf_fentry_test1 __ksym;

WARNING: externs should be avoided in .c files
#117: FILE: tools/testing/selftests/bpf/progs/kprobe_multi_session.c:11:
+extern const void bpf_fentry_test2 __ksym;

WARNING: externs should be avoided in .c files
#118: FILE: tools/testing/selftests/bpf/progs/kprobe_multi_session.c:12:
+extern const void bpf_fentry_test3 __ksym;

WARNING: externs should be avoided in .c files
#119: FILE: tools/testing/selftests/bpf/progs/kprobe_multi_session.c:13:
+extern const void bpf_fentry_test4 __ksym;

WARNING: externs should be avoided in .c files
#120: FILE: tools/testing/selftests/bpf/progs/kprobe_multi_session.c:14:
+extern const void bpf_fentry_test5 __ksym;

WARNING: externs should be avoided in .c files
#121: FILE: tools/testing/selftests/bpf/progs/kprobe_multi_session.c:15:
+extern const void bpf_fentry_test6 __ksym;

WARNING: externs should be avoided in .c files
#122: FILE: tools/testing/selftests/bpf/progs/kprobe_multi_session.c:16:
+extern const void bpf_fentry_test7 __ksym;

WARNING: externs should be avoided in .c files
#123: FILE: tools/testing/selftests/bpf/progs/kprobe_multi_session.c:17:
+extern const void bpf_fentry_test8 __ksym;

CHECK: Macro argument '__addr' may be better as '(__addr)' to avoid precedence issues
#152: FILE: tools/testing/selftests/bpf/progs/kprobe_multi_session.c:46:
+#define SET(__var, __addr) ({			\
+	if ((const void *) addr == __addr)	\
+		__var = 1;			\
+})

CHECK: No space is necessary after a cast
#153: FILE: tools/testing/selftests/bpf/progs/kprobe_multi_session.c:47:
+	if ((const void *) addr == __addr)	\

CHECK: No space is necessary after a cast
#183: FILE: tools/testing/selftests/bpf/progs/kprobe_multi_session.c:77:
+	if (((const void *) addr == &bpf_fentry_test1) ||

CHECK: No space is necessary after a cast
#184: FILE: tools/testing/selftests/bpf/progs/kprobe_multi_session.c:78:
+	    ((const void *) addr == &bpf_fentry_test3) ||

CHECK: No space is necessary after a cast
#185: FILE: tools/testing/selftests/bpf/progs/kprobe_multi_session.c:79:
+	    ((const void *) addr == &bpf_fentry_test5) ||

CHECK: No space is necessary after a cast
#186: FILE: tools/testing/selftests/bpf/progs/kprobe_multi_session.c:80:
+	    ((const void *) addr == &bpf_fentry_test7))

total: 0 errors, 18 warnings, 8 checks, 171 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 3fe67ec8b3e6 ("selftests/bpf: Add kprobe multi session 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, 18 warnings, 8 checks, 171 lines checked