CHECK: No space is necessary after a cast
#118: FILE: tools/testing/selftests/bpf/progs/test_dst_clear.c:11:
+void *bpf_cast_to_kern_ctx(void *) __ksym;

WARNING: line length of 81 exceeds 80 columns
#140: FILE: tools/testing/selftests/bpf/progs/test_dst_clear.c:33:
+	if (bpf_skb_load_bytes(skb, ETH_HLEN + sizeof(iph), &udph, sizeof(udph)))

total: 0 errors, 1 warnings, 1 checks, 132 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 cb7a09719627 ("selftests/bpf: test that dst is cleared on same-protocol encap") 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, 1 warnings, 1 checks, 132 lines checked