linux-kernel - [PATCH] bpf, btf: Make if test explicit to fix Coccinelle error

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Date: Mon, 24 Jun 2024 21:54:27 +0200
From: Thorsten Blum <thorsten.blum@...lux.com>
To: martin.lau@...ux.dev,
	ast@...nel.org,
	daniel@...earbox.net,
	andrii@...nel.org,
	eddyz87@...il.com,
	song@...nel.org,
	john.fastabend@...il.com,
	kpsingh@...nel.org,
	sdf@...ichev.me,
	haoluo@...gle.com,
	jolsa@...nel.org,
	yonghong.song@...ux.dev,
	bpf@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc: Thorsten Blum <thorsten.blum@...lux.com>
Subject: [PATCH] bpf, btf: Make if test explicit to fix Coccinelle error

Explicitly test the iterator variable i > 0 to fix the following
Coccinelle/coccicheck error reported by itnull.cocci:

	ERROR: iterator variable bound on line 4688 cannot be NULL

Compile-tested only.

Signed-off-by: Thorsten Blum <thorsten.blum@...lux.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 821063660d9f..7720f8967814 100644
--- a/kernel/bpf/btf.c
+++ b/kernel/bpf/btf.c
@@ -4687,7 +4687,7 @@ static void btf_datasec_show(const struct btf *btf,
 			    __btf_name_by_offset(btf, t->name_off));
 	for_each_vsi(i, t, vsi) {
 		var = btf_type_by_id(btf, vsi->type);
-		if (i)
+		if (i > 0)
 			btf_show(show, ",");
 		btf_type_ops(var)->show(btf, var, vsi->type,
 					data + vsi->offset, bits_offset, show);
-- 
2.45.2