WARNING: line length of 91 exceeds 80 columns
#41: FILE: include/linux/btf.h:82:
+#define KF_MAGIC_ARGS   (1 << 16) /* kfunc signature is different from its BPF signature */

CHECK: Prefer using the BIT macro
#41: FILE: include/linux/btf.h:82:
+#define KF_MAGIC_ARGS   (1 << 16) /* kfunc signature is different from its BPF signature */

WARNING: line length of 87 exceeds 80 columns
#82: FILE: kernel/bpf/verifier.c:3295:
+static const struct btf_type *find_magic_kfunc_proto(struct btf *desc_btf, s32 func_id)

WARNING: line length of 93 exceeds 80 columns
#141: FILE: kernel/bpf/verifier.c:3420:
+	 * Note that kfunc_flags may be NULL at this point, which means that we couldn't find

WARNING: line length of 98 exceeds 80 columns
#142: FILE: kernel/bpf/verifier.c:3421:
+	 * func_id in any relevant kfunc_id_set. This most likely indicates an invalid kfunc call.

WARNING: line length of 92 exceeds 80 columns
#143: FILE: kernel/bpf/verifier.c:3422:
+	 * However we don't want to fail the verification here, because invalid calls may be

WARNING: line length of 88 exceeds 80 columns
#149: FILE: kernel/bpf/verifier.c:3428:
+			verbose(env, "cannot find _impl proto for kernel function %s\n",

CHECK: Alignment should match open parenthesis
#150: FILE: kernel/bpf/verifier.c:3429:
+			verbose(env, "cannot find _impl proto for kernel function %s\n",
+			func_name);

WARNING: line length of 82 exceeds 80 columns
#162: FILE: kernel/bpf/verifier.c:12134:
+static bool is_kfunc_arg_magic(const struct btf *btf, const struct btf_param *arg)

WARNING: line length of 91 exceeds 80 columns
#192: FILE: kernel/bpf/verifier.c:13729:
+		kfunc_flags = btf_kfunc_flags_if_allowed(desc_btf, tmp_func_id, env->prog);

WARNING: line length of 95 exceeds 80 columns
#215: FILE: kernel/bpf/verifier.c:14298:
+		 * For correct tracking of zero-extensions we have to reset subreg_def for such

WARNING: line length of 97 exceeds 80 columns
#216: FILE: kernel/bpf/verifier.c:14299:
+		 * args. Otherwise mark_btf_func_reg_size() will be inspecting subreg_def of regs

WARNING: line length of 96 exceeds 80 columns
#217: FILE: kernel/bpf/verifier.c:14300:
+		 * from an earlier (irrelevant) point in the program, which may lead to an error

CHECK: Logical continuations should be on the previous line
#221: FILE: kernel/bpf/verifier.c:14304:
+		if (unlikely(KF_MAGIC_ARGS & meta.kfunc_flags
+				&& is_kfunc_arg_magic(desc_btf, &args[i])))

total: 0 errors, 11 warnings, 3 checks, 179 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 af89f9883e3e ("bpf: Support for kfuncs with KF_MAGIC_ARGS") 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, 11 warnings, 3 checks, 179 lines checked