WARNING: use relative pathname instead of absolute in changelog text
#21: 
    /path/to/kernel/tools/include/linux/err.h:35:8: error: 'inline' can only appear on functions

WARNING: Unknown commit id '13b25489b6f8', maybe rebased or not pulled?
#52: 
[0] commit 13b25489b6f8 ("kbuild: change working directory to external module directory with M=")

WARNING: Unknown commit id '13b25489b6f8', maybe rebased or not pulled?
#55: 
Fixes: 13b25489b6f8 ("kbuild: change working directory to external module directory with M=")

total: 0 errors, 3 warnings, 0 checks, 26 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 7fd31320e6c1 ("samples/bpf: remove unnecessary -I flags from libbpf EXTRA_CFLAGS") 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, 3 warnings, 0 checks, 26 lines checked