From: Kumar Kartikeya Dwivedi <memxor@gmail.com>
To: bpf@vger.kernel.org
Cc: Alexei Starovoitov <ast@kernel.org>,
Andrii Nakryiko <andrii@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
Eduard Zingerman <eddyz87@gmail.com>,
Emil Tsalapatis <emil@etsalapatis.com>,
kkd@meta.com, kernel-team@meta.com
Subject: [PATCH bpf-next] bpf: Fix offset warn check for bpf_res_spin_lock
Date: Sun, 19 Jul 2026 14:17:40 +0200 [thread overview]
Message-ID: <20260719121740.1547434-1-memxor@gmail.com> (raw)
Sashiko pointed out correctly that the case statement for
BPF_RES_SPIN_LOCK incorrectly checks offset for BPF_SPIN_LOCK.
Fix it by checking res_spin_lock_off instead.
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
---
kernel/bpf/btf.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/bpf/btf.c b/kernel/bpf/btf.c
index cbb1e49b9bcb..e7d4e9ba24e2 100644
--- a/kernel/bpf/btf.c
+++ b/kernel/bpf/btf.c
@@ -4168,7 +4168,7 @@ struct btf_record *btf_parse_fields(const struct btf *btf, const struct btf_type
rec->spin_lock_off = rec->fields[i].offset;
break;
case BPF_RES_SPIN_LOCK:
- WARN_ON_ONCE(rec->spin_lock_off >= 0);
+ WARN_ON_ONCE(rec->res_spin_lock_off >= 0);
/* Cache offset for faster lookup at runtime */
rec->res_spin_lock_off = rec->fields[i].offset;
break;
--
2.53.0
next reply other threads:[~2026-07-19 12:17 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-19 12:17 Kumar Kartikeya Dwivedi [this message]
2026-07-19 12:29 ` [PATCH bpf-next] bpf: Fix offset warn check for bpf_res_spin_lock sashiko-bot
2026-07-20 22:44 ` Emil Tsalapatis
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