From: Martin KaFai Lau <kafai@fb.com>
To: <netdev@vger.kernel.org>
Cc: Alexei Starovoitov <ast@fb.com>,
Daniel Borkmann <daniel@iogearbox.net>, <kernel-team@fb.com>,
John Fastabend <john.fastabend@gmail.com>
Subject: [PATCH net-next] bpf: Fix map-in-map checking in the verifier
Date: Thu, 17 Aug 2017 18:14:43 -0700 [thread overview]
Message-ID: <20170818011443.562793-1-kafai@fb.com> (raw)
In check_map_func_compatibility(), a 'break' has been accidentally
removed for the BPF_MAP_TYPE_ARRAY_OF_MAPS and BPF_MAP_TYPE_HASH_OF_MAPS
cases. This patch adds it back.
Fixes: 174a79ff9515 ("bpf: sockmap with sk redirect support")
Cc: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
---
kernel/bpf/verifier.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c
index 40f669ddb571..4f6e7eb42ba0 100644
--- a/kernel/bpf/verifier.c
+++ b/kernel/bpf/verifier.c
@@ -1523,6 +1523,7 @@ static int check_map_func_compatibility(struct bpf_map *map, int func_id)
case BPF_MAP_TYPE_HASH_OF_MAPS:
if (func_id != BPF_FUNC_map_lookup_elem)
goto error;
+ break;
case BPF_MAP_TYPE_SOCKMAP:
if (func_id != BPF_FUNC_sk_redirect_map &&
func_id != BPF_FUNC_sock_map_update &&
--
2.9.5
next reply other threads:[~2017-08-18 1:14 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-18 1:14 Martin KaFai Lau [this message]
2017-08-18 1:17 ` [PATCH net-next] bpf: Fix map-in-map checking in the verifier Alexei Starovoitov
2017-08-18 2:08 ` John Fastabend
2017-08-18 8:10 ` Daniel Borkmann
2017-08-18 23:26 ` David Miller
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