From: Andrii Nakryiko andriin@fb.com

[ Upstream commit fc32490bff855a539d253c8a52c5a1ba51d1325a ]

When specifying disjoint set of tests, test_progs doesn't set skipped test's array elements to false. This leads to spurious execution of tests that should have been skipped. Fix it by explicitly initializing them to false.

Fixes: 3a516a0a3a7b ("selftests/bpf: add sub-tests support for test_progs") Signed-off-by: Andrii Nakryiko andriin@fb.com Signed-off-by: Daniel Borkmann daniel@iogearbox.net Acked-by: Martin KaFai Lau kafai@fb.com Link: https://lore.kernel.org/bpf/20200314013932.4035712-2-andriin@fb.com Signed-off-by: Sasha Levin sashal@kernel.org --- tools/testing/selftests/bpf/test_progs.c | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/tools/testing/selftests/bpf/test_progs.c b/tools/testing/selftests/bpf/test_progs.c index 7fa7d08a8104d..849c1e8b8e3dc 100644 --- a/tools/testing/selftests/bpf/test_progs.c +++ b/tools/testing/selftests/bpf/test_progs.c @@ -361,7 +361,7 @@ static int libbpf_print_fn(enum libbpf_print_level level,

int parse_num_list(const char *s, struct test_selector *sel) { - int i, set_len = 0, num, start = 0, end = -1; + int i, set_len = 0, new_len, num, start = 0, end = -1; bool *set = NULL, *tmp, parsing_end = false; char *next;

@@ -396,18 +396,19 @@ int parse_num_list(const char *s, struct test_selector *sel) return -EINVAL;

if (end + 1 > set_len) { - set_len = end + 1; - tmp = realloc(set, set_len); + new_len = end + 1; + tmp = realloc(set, new_len); if (!tmp) { free(set); return -ENOMEM; } + for (i = set_len; i < start; i++) + tmp[i] = false; set = tmp; + set_len = new_len; } - for (i = start; i <= end; i++) { + for (i = start; i <= end; i++) set[i] = true; - } - }

if (!set)