linux-kernel - [PATCH 4.19 006/267] selftests: bpf: fix use of undeclared RET

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Message-Id: <20200619141649.161195522@linuxfoundation.org>
Date:   Fri, 19 Jun 2020 16:29:51 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        kernel test robot <rong.a.chen@...el.com>,
        Lorenz Bauer <lmb@...udflare.com>
Subject: [PATCH 4.19 006/267] selftests: bpf: fix use of undeclared RET_IF macro

From: Lorenz Bauer <lmb@...udflare.com>

commit 634efb750435 ("selftests: bpf: Reset global state between
reuseport test runs") uses a macro RET_IF which doesn't exist in
the v4.19 tree. It is defined as follows:

        #define RET_IF(condition, tag, format...) ({
                if (CHECK_FAIL(condition)) {
                        printf(tag " " format);
                        return;
                }
        })

CHECK_FAIL in turn is defined as:

        #define CHECK_FAIL(condition) ({
                int __ret = !!(condition);
                int __save_errno = errno;
                if (__ret) {
                        test__fail();
                        fprintf(stdout, "%s:FAIL:%d\n", __func__, __LINE__);
                }
                errno = __save_errno;
                __ret;
        })

Replace occurences of RET_IF with CHECK. This will abort the test binary
if clearing the intermediate state fails.

Fixes: 634efb750435 ("selftests: bpf: Reset global state between reuseport test runs")
Reported-by: kernel test robot <rong.a.chen@...el.com>
Signed-off-by: Lorenz Bauer <lmb@...udflare.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 tools/testing/selftests/bpf/test_select_reuseport.c |    8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

--- a/tools/testing/selftests/bpf/test_select_reuseport.c
+++ b/tools/testing/selftests/bpf/test_select_reuseport.c
@@ -616,13 +616,13 @@ static void cleanup_per_test(void)
 
 	for (i = 0; i < NR_RESULTS; i++) {
 		err = bpf_map_update_elem(result_map, &i, &zero, BPF_ANY);
-		RET_IF(err, "reset elem in result_map",
-		       "i:%u err:%d errno:%d\n", i, err, errno);
+		CHECK(err, "reset elem in result_map",
+		      "i:%u err:%d errno:%d\n", i, err, errno);
 	}
 
 	err = bpf_map_update_elem(linum_map, &zero, &zero, BPF_ANY);
-	RET_IF(err, "reset line number in linum_map", "err:%d errno:%d\n",
-	       err, errno);
+	CHECK(err, "reset line number in linum_map", "err:%d errno:%d\n",
+	      err, errno);
 
 	for (i = 0; i < REUSEPORT_ARRAY_SIZE; i++)
 		close(sk_fds[i]);