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From: Ilya Leoshkevich <iii@linux.ibm.com>
To: Alexei Starovoitov <ast@kernel.org>,
	Daniel Borkmann <daniel@iogearbox.net>
Cc: bpf@vger.kernel.org, Heiko Carstens <hca@linux.ibm.com>,
	Vasily Gorbik <gor@linux.ibm.com>,
	Andrii Nakryiko <andrii.nakryiko@gmail.com>,
	Ilya Leoshkevich <iii@linux.ibm.com>
Subject: [PATCH bpf-next v2] selftests/bpf: Fix endianness issue in sk_assign
Date: Tue, 15 Sep 2020 13:38:15 +0200	[thread overview]
Message-ID: <20200915113815.3768217-1-iii@linux.ibm.com> (raw)

server_map's value size is 8, but the test tries to put an int there.
This sort of works on x86 (unless followed by non-0), but hard fails on
s390.

Fix by using __s64 instead of int.

Fixes: 2d7824ffd25c ("selftests: bpf: Add test for sk_assign")
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
---

v1->v2: Use __s64.

tools/testing/selftests/bpf/prog_tests/sk_assign.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/selftests/bpf/prog_tests/sk_assign.c b/tools/testing/selftests/bpf/prog_tests/sk_assign.c
index a49a26f95a8b..3a469099f30d 100644
--- a/tools/testing/selftests/bpf/prog_tests/sk_assign.c
+++ b/tools/testing/selftests/bpf/prog_tests/sk_assign.c
@@ -265,7 +265,7 @@ void test_sk_assign(void)
 		TEST("ipv6 udp port redir", AF_INET6, SOCK_DGRAM, false),
 		TEST("ipv6 udp addr redir", AF_INET6, SOCK_DGRAM, true),
 	};
-	int server = -1;
+	__s64 server = -1;
 	int server_map;
 	int self_net;
 	int i;
-- 
2.25.4


             reply	other threads:[~2020-09-16  0:51 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-15 11:38 Ilya Leoshkevich [this message]
2020-09-16  1:18 ` [PATCH bpf-next v2] selftests/bpf: Fix endianness issue in sk_assign Andrii Nakryiko
2020-09-16 22:19   ` Song Liu
2020-09-18 23:08 ` Daniel Borkmann

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