CHECK: Please don't use multiple blank lines
#25: FILE: kernel/bpf/verifier.c:17803:
 
+

WARNING: line length of 92 exceeds 80 columns
#26: FILE: kernel/bpf/verifier.c:17804:
+static int return_retval_range(struct bpf_verifier_env *env, struct bpf_retval_range *range,

CHECK: Alignment should match open parenthesis
#27: FILE: kernel/bpf/verifier.c:17805:
+static int return_retval_range(struct bpf_verifier_env *env, struct bpf_retval_range *range,
+		bool *return_32bit)

WARNING: line length of 81 exceeds 80 columns
#169: FILE: kernel/bpf/verifier.c:17878:
+			if (range->minval == S32_MIN && range->maxval == S32_MAX)

WARNING: line length of 91 exceeds 80 columns
#203: FILE: kernel/bpf/verifier.c:17908:
+static int check_return_code(struct bpf_verifier_env *env, int regno, const char *reg_name)

WARNING: line length of 97 exceeds 80 columns
#222: FILE: kernel/bpf/verifier.c:17927:
+				/* See return_retval_range, can be 0 or 0-1 depending on hook. */

WARNING: line length of 87 exceeds 80 columns
#234: FILE: kernel/bpf/verifier.c:17939:
+			/* Allow a struct_ops program to return a referenced kptr if it

WARNING: line length of 86 exceeds 80 columns
#235: FILE: kernel/bpf/verifier.c:17940:
+			 * matches the operator's return type and is in its unmodified

WARNING: line length of 86 exceeds 80 columns
#236: FILE: kernel/bpf/verifier.c:17941:
+			 * form. A scalar zero (i.e., a null pointer) is also allowed.

WARNING: line length of 91 exceeds 80 columns
#238: FILE: kernel/bpf/verifier.c:17943:
+			reg_type = reg->btf ? btf_type_by_id(reg->btf, reg->btf_id) : NULL;

WARNING: line length of 91 exceeds 80 columns
#240: FILE: kernel/bpf/verifier.c:17945:
+							prog->aux->attach_func_proto->type,

WARNING: line length of 83 exceeds 80 columns
#243: FILE: kernel/bpf/verifier.c:17948:
+				return __check_ptr_off_reg(env, reg, regno, false);

WARNING: line length of 104 exceeds 80 columns
#273: FILE: kernel/bpf/verifier.c:17978:
+			verbose(env, "At subprogram exit the register R%d is not a scalar value (%s)\n",

WARNING: line length of 113 exceeds 80 columns
#283: FILE: kernel/bpf/verifier.c:17988:
+	if (prog_type == BPF_PROG_TYPE_CGROUP_SKB && (env->prog->expected_attach_type == BPF_CGROUP_INET_EGRESS))

CHECK: Unnecessary parentheses around 'env->prog->expected_attach_type == BPF_CGROUP_INET_EGRESS'
#283: FILE: kernel/bpf/verifier.c:17988:
+	if (prog_type == BPF_PROG_TYPE_CGROUP_SKB && (env->prog->expected_attach_type == BPF_CGROUP_INET_EGRESS))

total: 0 errors, 12 warnings, 3 checks, 272 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 558e6d7ad85c ("bpf: Factor out program return value calculation") 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, 12 warnings, 3 checks, 272 lines checked