WARNING: Avoid line continuations in quoted strings
#96: FILE: tools/bpf/bpftool/gen.c:831:
+			codegen("\

WARNING: line length of 114 exceeds 80 columns
#98: FILE: tools/bpf/bpftool/gen.c:833:
+				static const int opts_signature_maps[1] __attribute__((__aligned__(8))) = {0}; \n\

WARNING: Prefer __aligned(8) over __attribute__((__aligned__(8)))
#98: FILE: tools/bpf/bpftool/gen.c:833:
+				static const int opts_signature_maps[1] __attribute__((__aligned__(8))) = {0}; \n\

WARNING: Avoid unnecessary line continuations
#110: FILE: tools/bpf/bpftool/gen.c:846:
+			codegen("\

WARNING: Avoid line continuations in quoted strings
#110: FILE: tools/bpf/bpftool/gen.c:846:
+			codegen("\

WARNING: line length of 91 exceeds 80 columns
#112: FILE: tools/bpf/bpftool/gen.c:848:
+				opts.signature_maps = (void *)opts_signature_maps;	\n\

WARNING: line length of 91 exceeds 80 columns
#113: FILE: tools/bpf/bpftool/gen.c:849:
+				opts.signature_maps_sz = 1; 				\n\

WARNING: please, no space before tabs
#113: FILE: tools/bpf/bpftool/gen.c:849:
+^I^I^I^Iopts.signature_maps_sz = 1; ^I^I^I^I\n\$

WARNING: Avoid unnecessary line continuations
#116: FILE: tools/bpf/bpftool/gen.c:852:
+			codegen("\

WARNING: Avoid line continuations in quoted strings
#116: FILE: tools/bpf/bpftool/gen.c:852:
+			codegen("\

WARNING: line length of 83 exceeds 80 columns
#118: FILE: tools/bpf/bpftool/gen.c:854:
+				opts.signature_maps = (void *)NULL;		\n\

WARNING: line length of 83 exceeds 80 columns
#119: FILE: tools/bpf/bpftool/gen.c:855:
+				opts.signature_maps_sz = 0;			\n\

WARNING: line length of 86 exceeds 80 columns
#210: FILE: tools/bpf/bpftool/sign.c:139:
+		libbpf_sha256(opts->data, opts->data_sz, hash + SHA256_DIGEST_LENGTH);

WARNING: line length of 90 exceeds 80 columns
#262: FILE: tools/lib/bpf/skel_internal.h:357:
+	const size_t prog_load_attr_sz = offsetofend(union bpf_attr, signature_maps_size);

CHECK: No space is necessary after a cast
#270: FILE: tools/lib/bpf/skel_internal.h:400:
+	attr.signature_maps = (long) opts->signature_maps;

total: 0 errors, 14 warnings, 1 checks, 193 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 f8fe822c1e2c ("bpftool: Add support for signing program and map hash chains") 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, 14 warnings, 1 checks, 193 lines checked