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From:   =?utf-8?q?Thomas_Wei=C3=9Fschuh?= <linux@weissschuh.net>
Date:   Sun, 21 May 2023 11:36:32 +0200
Subject: [PATCH 4/7] tools/nolibc: add test for __stack_chk_guard
 initialization
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Message-Id: <20230521-nolibc-automatic-stack-protector-v1-4-dad6c80c51c1@weissschuh.net>
References: <20230521-nolibc-automatic-stack-protector-v1-0-dad6c80c51c1@weissschuh.net>
In-Reply-To: <20230521-nolibc-automatic-stack-protector-v1-0-dad6c80c51c1@weissschuh.net>
To:     Willy Tarreau <w@1wt.eu>, "Paul E. McKenney" <paulmck@kernel.org>,
        Shuah Khan <shuah@kernel.org>,
        Paul Walmsley <paul.walmsley@sifive.com>,
        Palmer Dabbelt <palmer@dabbelt.com>,
        Albert Ou <aou@eecs.berkeley.edu>,
        Nathan Chancellor <nathan@kernel.org>,
        Nick Desaulniers <ndesaulniers@google.com>,
        Tom Rix <trix@redhat.com>
Cc:     linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org,
        linux-riscv@lists.infradead.org, llvm@lists.linux.dev,
        =?utf-8?q?Thomas_Wei=C3=9Fschuh?= <linux@weissschuh.net>
Precedence: bulk

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
---
 tools/testing/selftests/nolibc/nolibc-test.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/tools/testing/selftests/nolibc/nolibc-test.c b/tools/testing/selftests/nolibc/nolibc-test.c
index d8b59c8f6c03..995dc39a177e 100644
--- a/tools/testing/selftests/nolibc/nolibc-test.c
+++ b/tools/testing/selftests/nolibc/nolibc-test.c
@@ -808,6 +808,14 @@ static int run_protection(int min, int max)
 	return 0;
 #endif
 
+#if defined(NOLIBC_STACKPROTECTOR)
+	if (!__stack_chk_guard) {
+		llen += printf("__stack_chk_guard not initialized");
+		pad_spc(llen, 64, "[FAIL]\n");
+		return 1;
+	}
+#endif
+
 	pid = -1;
 	pid = fork();
 

-- 
2.40.1