WARNING: added, moved or deleted file(s), does MAINTAINERS need updating?
#28: 
new file mode 100644

WARNING: Use of volatile is usually wrong: see Documentation/process/volatile-considered-harmful.rst
#226: FILE: tools/testing/selftests/bpf/progs/free_timer.c:23:
+	volatile int sum = 0;

total: 0 errors, 2 warnings, 0 checks, 236 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 634b59abcf1e ("selftests/bpf: Add test case for the freeing of bpf_timer") 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, 2 warnings, 0 checks, 236 lines checked