linux-kernel - [PATCH bpf-next] bpf: Add the missing types in the logs

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Message-Id: <20260128085842.145057-1-yangfeng59949@163.com>
Date: Wed, 28 Jan 2026 16:58:42 +0800
From: Feng Yang <yangfeng59949@....com>
To: ast@...nel.org,
	daniel@...earbox.net,
	andrii@...nel.org,
	martin.lau@...ux.dev,
	eddyz87@...il.com,
	song@...nel.org,
	yonghong.song@...ux.dev,
	john.fastabend@...il.com,
	kpsingh@...nel.org,
	sdf@...ichev.me,
	haoluo@...gle.com,
	jolsa@...nel.org
Cc: bpf@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH bpf-next] bpf: Add the missing types in the logs

From: Feng Yang <yangfeng@...inos.cn>

Add the missing types to avoid such uninformative errors as shown below:
R1 type=ptr_ expected=ptr_

Signed-off-by: Feng Yang <yangfeng@...inos.cn>
---
 kernel/bpf/log.c | 16 ++++++++++++++--
 1 file changed, 14 insertions(+), 2 deletions(-)

diff --git a/kernel/bpf/log.c b/kernel/bpf/log.c
index a0c3b35de2ce..6fee3d8b3703 100644
--- a/kernel/bpf/log.c
+++ b/kernel/bpf/log.c
@@ -473,14 +473,26 @@ const char *reg_type_str(struct bpf_verifier_env *env, enum bpf_reg_type type)
 			strscpy(postfix, "_or_null");
 	}
 
-	snprintf(prefix, sizeof(prefix), "%s%s%s%s%s%s%s",
+	snprintf(prefix, sizeof(prefix), "%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s",
 		 type & MEM_RDONLY ? "rdonly_" : "",
 		 type & MEM_RINGBUF ? "ringbuf_" : "",
 		 type & MEM_USER ? "user_" : "",
 		 type & MEM_PERCPU ? "percpu_" : "",
 		 type & MEM_RCU ? "rcu_" : "",
 		 type & PTR_UNTRUSTED ? "untrusted_" : "",
-		 type & PTR_TRUSTED ? "trusted_" : ""
+		 type & PTR_TRUSTED ? "trusted_" : "",
+		 type & MEM_UNINIT ? "uninit_" : "",
+		 type & DYNPTR_TYPE_LOCAL ? "dynptr_local_" : "",
+		 type & DYNPTR_TYPE_RINGBUF ? "dynptr_ringbuf_" : "",
+		 type & MEM_FIXED_SIZE ? "fixed_size_" : "",
+		 type & MEM_ALLOC ? "alloc_" : "",
+		 type & NON_OWN_REF ? "non_own_ref_" : "",
+		 type & DYNPTR_TYPE_SKB ? "dynptr_skb_" : "",
+		 type & DYNPTR_TYPE_XDP ? "dynptr_xdp_" : "",
+		 type & MEM_ALIGNED ? "aligned_" : "",
+		 type & MEM_WRITE ? "write_" : "",
+		 type & DYNPTR_TYPE_SKB_META ? "dynptr_skb_meta_" : "",
+		 type & DYNPTR_TYPE_FILE ? "dynptr_file_" : ""
 	);
 
 	snprintf(env->tmp_str_buf, TMP_STR_BUF_LEN, "%s%s%s",
-- 
2.43.0