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From:   jeffxu@chromium.org
To:     skhan@linuxfoundation.org, keescook@chromium.org
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Subject: [PATCH v1 2/2] selftests/memfd: sysctl: fix MEMFD_NOEXEC_SCOPE_NOEXEC_ENFORCED
Date:   Fri, 30 Jun 2023 03:17:20 +0000
Message-ID: <20230630031721.623955-3-jeffxu@google.com>
In-Reply-To: <20230630031721.623955-1-jeffxu@google.com>
References: <20230630031721.623955-1-jeffxu@google.com>
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From: Jeff Xu <jeffxu@google.com>

Add selftest for sysctl vm.memfd_noexec is 2
(MEMFD_NOEXEC_SCOPE_NOEXEC_ENFORCED)

memfd_create(.., MFD_EXEC) should fail in this case.

Signed-off-by: Jeff Xu <jeffxu@google.com>
---
 tools/testing/selftests/memfd/memfd_test.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/tools/testing/selftests/memfd/memfd_test.c b/tools/testing/selftests/memfd/memfd_test.c
index dba0e8ba002f..dbdd9ec5e397 100644
--- a/tools/testing/selftests/memfd/memfd_test.c
+++ b/tools/testing/selftests/memfd/memfd_test.c
@@ -1147,6 +1147,11 @@ static void test_sysctl_child(void)
 	sysctl_assert_write("2");
 	mfd_fail_new("kern_memfd_sysctl_2",
 		MFD_CLOEXEC | MFD_ALLOW_SEALING);
+	mfd_fail_new("kern_memfd_sysctl_2_MFD_EXEC",
+		MFD_CLOEXEC | MFD_EXEC);
+	fd = mfd_assert_new("", 0, MFD_NOEXEC_SEAL);
+	close(fd);
+
 	sysctl_fail_write("0");
 	sysctl_fail_write("1");
 }
-- 
2.41.0.255.g8b1d071c50-goog