WARNING: please, no space before tabs
#71: FILE: include/uapi/linux/bpf.h:1597:
+^I^I__u32 ^I^Isignature_size;$

WARNING: please, no space before tabs
#75: FILE: include/uapi/linux/bpf.h:1601:
+^I^I__u32 ^I^Ikeyring_id;$

WARNING: line length of 97 exceeds 80 columns
#87: FILE: kernel/bpf/syscall.c:2785:
+static int bpf_prog_verify_signature(struct bpf_prog *prog, union bpf_attr *attr, bpfptr_t uattr)

WARNING: please, no space before tabs
#182: FILE: tools/include/uapi/linux/bpf.h:1597:
+^I^I__u32 ^I^Isignature_size;$

WARNING: please, no space before tabs
#186: FILE: tools/include/uapi/linux/bpf.h:1601:
+^I^I__u32 ^I^Ikeyring_id;$

total: 0 errors, 5 warnings, 0 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 b5d99a920219 ("bpf: Implement signature verification for BPF programs") 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, 5 warnings, 0 checks, 132 lines checked