WARNING: Use of volatile is usually wrong: see Documentation/process/volatile-considered-harmful.rst
#143: FILE: tools/testing/selftests/bpf/progs/test_ringbuf_overwrite.c:17:
+const volatile unsigned long LEN1;

WARNING: Use of volatile is usually wrong: see Documentation/process/volatile-considered-harmful.rst
#144: FILE: tools/testing/selftests/bpf/progs/test_ringbuf_overwrite.c:18:
+const volatile unsigned long LEN2;

WARNING: Use of volatile is usually wrong: see Documentation/process/volatile-considered-harmful.rst
#145: FILE: tools/testing/selftests/bpf/progs/test_ringbuf_overwrite.c:19:
+const volatile unsigned long LEN3;

WARNING: Use of volatile is usually wrong: see Documentation/process/volatile-considered-harmful.rst
#146: FILE: tools/testing/selftests/bpf/progs/test_ringbuf_overwrite.c:20:
+const volatile unsigned long LEN4;

WARNING: Use of volatile is usually wrong: see Documentation/process/volatile-considered-harmful.rst
#147: FILE: tools/testing/selftests/bpf/progs/test_ringbuf_overwrite.c:21:
+const volatile unsigned long LEN5;

total: 0 errors, 5 warnings, 0 checks, 187 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 4fde80088985 ("selftests/bpf: Add overwrite mode test for BPF ring buffer") 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, 0 checks, 187 lines checked