From: Wei-Chun Chao <weichunc@plumgrid.com>
To: netdev@vger.kernel.org
Cc: davem@davemloft.net, ast@plumgrid.com, xiakaixu@huawei.com
Subject: [PATCH v2 net-next] bpf: fix bpf_perf_event_read() loop upper bound
Date: Wed, 12 Aug 2015 07:57:12 -0700 [thread overview]
Message-ID: <1439391432-4690-1-git-send-email-weichunc@plumgrid.com> (raw)
Verifier rejects programs incorrectly.
Fixes: 35578d798400 ("bpf: Implement function bpf_perf_event_read()")
Cc: Kaixu Xia <xiakaixu@huawei.com>
Cc: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: Wei-Chun Chao <weichunc@plumgrid.com>
---
v2: better subject line
---
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 48e1c71..ed12e38 100644
--- a/kernel/bpf/verifier.c
+++ b/kernel/bpf/verifier.c
@@ -853,7 +853,7 @@ static int check_map_func_compatibility(struct bpf_map *map, int func_id)
if (!map)
return 0;
- for (i = 0; i <= ARRAY_SIZE(func_limit); i++) {
+ for (i = 0; i < ARRAY_SIZE(func_limit); i++) {
bool_map = (map->map_type == func_limit[i].map_type);
bool_func = (func_id == func_limit[i].func_id);
/* only when map & func pair match it can continue.
--
1.9.1
next reply other threads:[~2015-08-12 14:57 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-08-12 14:57 Wei-Chun Chao [this message]
2015-08-12 15:58 ` [PATCH v2 net-next] bpf: fix bpf_perf_event_read() loop upper bound Daniel Borkmann
2015-08-12 16:21 ` Alexei Starovoitov
2015-08-12 23:43 ` David Miller
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