linux-kernel - [PATCH 5.4 089/158] selftests/bpf: Fix error return code in run_getsockopt

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Date:   Mon, 23 Nov 2020 13:21:57 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Hulk Robot <hulkci@...wei.com>,
        Wang Hai <wanghai38@...wei.com>,
        Daniel Borkmann <daniel@...earbox.net>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.4 089/158] selftests/bpf: Fix error return code in run_getsockopt_test()

From: Wang Hai <wanghai38@...wei.com>

[ Upstream commit 2acc3c1bc8e98bc66b1badec42e9ea205b4fcdaa ]

Fix to return a negative error code from the error handling
case instead of 0, as done elsewhere in this function.

Fixes: 65b4414a05eb ("selftests/bpf: add sockopt test that exercises BPF_F_ALLOW_MULTI")
Reported-by: Hulk Robot <hulkci@...wei.com>
Signed-off-by: Wang Hai <wanghai38@...wei.com>
Signed-off-by: Daniel Borkmann <daniel@...earbox.net>
Link: https://lore.kernel.org/bpf/20201116101633.64627-1-wanghai38@huawei.com
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 tools/testing/selftests/bpf/prog_tests/sockopt_multi.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tools/testing/selftests/bpf/prog_tests/sockopt_multi.c b/tools/testing/selftests/bpf/prog_tests/sockopt_multi.c
index 29188d6f5c8de..51fac975b3163 100644
--- a/tools/testing/selftests/bpf/prog_tests/sockopt_multi.c
+++ b/tools/testing/selftests/bpf/prog_tests/sockopt_multi.c
@@ -138,7 +138,8 @@ static int run_getsockopt_test(struct bpf_object *obj, int cg_parent,
 	 */
 
 	buf = 0x40;
-	if (setsockopt(sock_fd, SOL_IP, IP_TOS, &buf, 1) < 0) {
+	err = setsockopt(sock_fd, SOL_IP, IP_TOS, &buf, 1);
+	if (err < 0) {
 		log_err("Failed to call setsockopt(IP_TOS)");
 		goto detach;
 	}
-- 
2.27.0