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From: Andrii Nakryiko <andriin@fb.com>
To: <bpf@vger.kernel.org>, <netdev@vger.kernel.org>, <ast@fb.com>,
	<daniel@iogearbox.net>
Cc: <andrii.nakryiko@gmail.com>, <kernel-team@fb.com>,
	Andrii Nakryiko <andriin@fb.com>
Subject: [PATCH bpf-next 2/3] selftests/bpf: fix test_progs's parsing of test numbers
Date: Fri, 13 Mar 2020 18:39:31 -0700	[thread overview]
Message-ID: <20200314013932.4035712-2-andriin@fb.com> (raw)
In-Reply-To: <20200314013932.4035712-1-andriin@fb.com>

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>
---
 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 dc12fd0de1c2..c8cb407482c6 100644
--- a/tools/testing/selftests/bpf/test_progs.c
+++ b/tools/testing/selftests/bpf/test_progs.c
@@ -424,7 +424,7 @@ static int parse_str_list(const char *s, struct str_set *set)
 
 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;
 
@@ -459,18 +459,19 @@ 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)
-- 
2.17.1


  reply	other threads:[~2020-03-14  1:39 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-14  1:39 [PATCH bpf-next 1/3] selftests/bpf: fix race in tcp_rtt test Andrii Nakryiko
2020-03-14  1:39 ` Andrii Nakryiko [this message]
2020-03-17  5:28   ` [PATCH bpf-next 2/3] selftests/bpf: fix test_progs's parsing of test numbers Martin KaFai Lau
2020-03-14  1:39 ` [PATCH bpf-next 3/3] selftests/bpf: reset process and thread affinity after each test/sub-test Andrii Nakryiko
2020-03-17  5:35   ` [Potential Spoof] " Martin KaFai Lau
2020-03-17  5:39     ` Andrii Nakryiko
2020-03-17  5:27 ` [Potential Spoof] [PATCH bpf-next 1/3] selftests/bpf: fix race in tcp_rtt test Martin KaFai Lau
2020-03-17 18:58 ` Daniel Borkmann

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