WARNING: Use of volatile is usually wrong: see Documentation/process/volatile-considered-harmful.rst
#49: FILE: tools/testing/selftests/bpf/progs/test_ringbuf_write.c:15:
+const volatile int reserve_size = 0;

total: 0 errors, 1 warnings, 0 checks, 37 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 5e1aa1b5fd42 ("selftests/bpf: Fix ringbuf/ringbuf_write test failure with arm64 64KB page size") 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, 1 warnings, 0 checks, 37 lines checked