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| author | Dan Carpenter <dan.carpenter@oracle.com> | 2022-07-19 12:50:32 +0300 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2022-07-19 20:45:45 +0300 |
| commit | c5d22f4cfe8dfb93f1db0a1e7e2e7ebc41395d98 (patch) | |
| tree | d71de2438770abdb4f9c9a9ea9eabaa265c2b7d4 /tools/testing/selftests | |
| parent | 979855d3026401ed6eecfd1935d19fd7b74df479 (diff) | |
| download | linux-c5d22f4cfe8dfb93f1db0a1e7e2e7ebc41395d98.tar.xz | |
selftests/bpf: fix a test for snprintf() overflow
The snprintf() function returns the number of bytes which *would*
have been copied if there were space. In other words, it can be
> sizeof(pin_path).
Fixes: c0fa1b6c3efc ("bpf: btf: Add BTF tests")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Link: https://lore.kernel.org/r/YtZ+aD/tZMkgOUw+@kili
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'tools/testing/selftests')
| -rw-r--r-- | tools/testing/selftests/bpf/prog_tests/btf.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/btf.c b/tools/testing/selftests/bpf/prog_tests/btf.c index 941b0100bafa..ef6528b8084c 100644 --- a/tools/testing/selftests/bpf/prog_tests/btf.c +++ b/tools/testing/selftests/bpf/prog_tests/btf.c @@ -5338,7 +5338,7 @@ static void do_test_pprint(int test_num) ret = snprintf(pin_path, sizeof(pin_path), "%s/%s", "/sys/fs/bpf", test->map_name); - if (CHECK(ret == sizeof(pin_path), "pin_path %s/%s is too long", + if (CHECK(ret >= sizeof(pin_path), "pin_path %s/%s is too long", "/sys/fs/bpf", test->map_name)) { err = -1; goto done; |