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Date: Wed, 26 Oct 2022 23:44:58 -0400 From: Xu Kuohai <xukuohai@...weicloud.com> To: bpf@...r.kernel.org, linux-kernel@...r.kernel.org Cc: Alexei Starovoitov <ast@...nel.org>, Daniel Borkmann <daniel@...earbox.net>, John Fastabend <john.fastabend@...il.com>, Andrii Nakryiko <andrii@...nel.org>, Martin KaFai Lau <martin.lau@...ux.dev>, Song Liu <song@...nel.org>, Yonghong Song <yhs@...com>, KP Singh <kpsingh@...nel.org>, Stanislav Fomichev <sdf@...gle.com>, Hao Luo <haoluo@...gle.com>, Jiri Olsa <jolsa@...nel.org>, "David S . Miller" <davem@...emloft.net> Subject: [PATCH bpf-next v2] bpf: Fix a typo in comment for DFS algorithm From: Xu Kuohai <xukuohai@...wei.com> There is a typo in comment for DFS algorithm in bpf/verifier.c. The top element should not be popped until all its neighbors have been checked. Fix it. Fixes: 475fb78fbf48 ("bpf: verifier (add branch/goto checks)") Signed-off-by: Xu Kuohai <xukuohai@...wei.com> --- kernel/bpf/verifier.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c index adf998159897..8c1152c7c289 100644 --- a/kernel/bpf/verifier.c +++ b/kernel/bpf/verifier.c @@ -10662,7 +10662,7 @@ static int check_return_code(struct bpf_verifier_env *env) * 3 let S be a stack * 4 S.push(v) * 5 while S is not empty - * 6 t <- S.pop() + * 6 t <- S.peek() * 7 if t is what we're looking for: * 8 return t * 9 for all edges e in G.adjacentEdges(t) do -- 2.30.2
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