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| author | Wei-Chun Chao <weichunc@plumgrid.com> | 2015-08-12 07:57:12 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-08-12 16:42:50 -0700 |
| commit | 140d8b335a9beb234fd0ed9a15aa6a47f47fd771 (patch) | |
| tree | 8e68a8ebfcc14bcda57bc1cca307a9d8b0534eb5 /kernel/bpf | |
| parent | dcef70704d6c2792c6025ceba9708554d441a4bb (diff) | |
| download | linux-140d8b335a9beb234fd0ed9a15aa6a47f47fd771.tar.gz linux-140d8b335a9beb234fd0ed9a15aa6a47f47fd771.tar.bz2 linux-140d8b335a9beb234fd0ed9a15aa6a47f47fd771.zip | |
bpf: fix bpf_perf_event_read() loop upper bound
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>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'kernel/bpf')
| -rw-r--r-- | kernel/bpf/verifier.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c index 48e1c7192560..ed12e385fb75 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. |