WARNING: char * array declaration might be better as static const
#35: FILE: tools/testing/selftests/bpf/prog_tests/fexit_bpf2bpf.c:352:
+	const char *prog_name[] = {

WARNING: quoted string split across lines
#57: FILE: tools/testing/selftests/bpf/prog_tests/fexit_bpf2bpf.c:452:
+				     "Return type UNKNOWN of test_freplace_int_with_void()"
+				     " doesn't match type INT of global_func2()");

WARNING: line length of 96 exceeds 80 columns
#120: FILE: tools/testing/selftests/bpf/progs/exceptions_fail.c:58:
+__failure __msg("Global function exception_cb_bad_ret_type1() return value not void or scalar.")

WARNING: Use of volatile is usually wrong: see Documentation/process/volatile-considered-harmful.rst
#151: FILE: tools/testing/selftests/bpf/progs/freplace_int_with_void.c:6:
+volatile int data;

WARNING: Use of volatile is usually wrong: see Documentation/process/volatile-considered-harmful.rst
#170: FILE: tools/testing/selftests/bpf/progs/freplace_void.c:5:
+volatile int data;

CHECK: Lines should not end with a '('
#202: FILE: tools/testing/selftests/bpf/progs/test_global_func18.c:17:
+	asm volatile(

total: 0 errors, 5 warnings, 1 checks, 146 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 8f03215ccc70 ("selftests: bpf: Add tests for void global subprogs") has style problems, please review.

NOTE: Ignored message types: ALLOC_SIZEOF_STRUCT BAD_REPORTED_BY_LINK CAMELCASE COMMIT_LOG_LONG_LINE FILE_PATH_CHANGES 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, 5 warnings, 1 checks, 146 lines checked