netdev - [PATCH v2 1/2] Revert "selftests/harness: remove use of LINE

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date: Thu,  9 May 2024 13:31:12 +0800
From: Tao Su <tao1.su@...ux.intel.com>
To: linux-kselftest@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-sound@...r.kernel.org,
	kvm@...r.kernel.org,
	netdev@...r.kernel.org,
	linux-rtc@...r.kernel.org,
	linux-sgx@...r.kernel.org
Cc: akpm@...ux-foundation.org,
	edliaw@...gle.com,
	ivan.orlov0322@...il.com,
	broonie@...nel.org,
	perex@...ex.cz,
	tiwai@...e.com,
	shuah@...nel.org,
	seanjc@...gle.com,
	pbonzini@...hat.com,
	bongsu.jeon@...sung.com,
	davem@...emloft.net,
	edumazet@...gle.com,
	kuba@...nel.org,
	pabeni@...hat.com,
	alexandre.belloni@...tlin.com,
	jarkko@...nel.org,
	dave.hansen@...ux.intel.com,
	tao1.su@...ux.intel.com
Subject: [PATCH v2 1/2] Revert "selftests/harness: remove use of LINE_MAX"

This reverts commit 8092162335554c8ef5e7f50eff68aa9cfbdbf865.

asprintf() is declared in stdio.h when defining _GNU_SOURCE, but stdio.h
is so common that many files don’t define _GNU_SOURCE before including
stdio.h, and defining _GNU_SOURCE after including stdio.h will no longer
take effect, which causes warnings or even errors during compilation in
many selftests.

Revert 'commit 809216233555 ("selftests/harness: remove use of LINE_MAX")'
as that came in quite late in the 6.9 cycle.

Link: https://lore.kernel.org/linux-kselftest/ZjuA3aY_iHkjP7bQ@google.com/
Fixes: 809216233555 ("selftests/harness: remove use of LINE_MAX")
Signed-off-by: Tao Su <tao1.su@...ux.intel.com>
---
 tools/testing/selftests/kselftest_harness.h | 12 ++++--------
 tools/testing/selftests/mm/mdwe_test.c      |  1 -
 2 files changed, 4 insertions(+), 9 deletions(-)

diff --git a/tools/testing/selftests/kselftest_harness.h b/tools/testing/selftests/kselftest_harness.h
index d98702b6955d..ba3ddeda24bf 100644
--- a/tools/testing/selftests/kselftest_harness.h
+++ b/tools/testing/selftests/kselftest_harness.h
@@ -56,6 +56,7 @@
 #include <asm/types.h>
 #include <ctype.h>
 #include <errno.h>
+#include <limits.h>
 #include <stdbool.h>
 #include <stdint.h>
 #include <stdio.h>
@@ -1158,7 +1159,7 @@ void __run_test(struct __fixture_metadata *f,
 		struct __test_metadata *t)
 {
 	struct __test_xfail *xfail;
-	char *test_name;
+	char test_name[LINE_MAX];
 	const char *diagnostic;
 
 	/* reset test struct */
@@ -1166,12 +1167,8 @@ void __run_test(struct __fixture_metadata *f,
 	t->trigger = 0;
 	memset(t->results->reason, 0, sizeof(t->results->reason));
 
-	if (asprintf(&test_name, "%s%s%s.%s", f->name,
-		variant->name[0] ? "." : "", variant->name, t->name) == -1) {
-		ksft_print_msg("ERROR ALLOCATING MEMORY\n");
-		t->exit_code = KSFT_FAIL;
-		_exit(t->exit_code);
-	}
+	snprintf(test_name, sizeof(test_name), "%s%s%s.%s",
+		 f->name, variant->name[0] ? "." : "", variant->name, t->name);
 
 	ksft_print_msg(" RUN           %s ...\n", test_name);
 
@@ -1209,7 +1206,6 @@ void __run_test(struct __fixture_metadata *f,
 
 	ksft_test_result_code(t->exit_code, test_name,
 			      diagnostic ? "%s" : NULL, diagnostic);
-	free(test_name);
 }
 
 static int test_harness_run(int argc, char **argv)
diff --git a/tools/testing/selftests/mm/mdwe_test.c b/tools/testing/selftests/mm/mdwe_test.c
index 1e01d3ddc11c..200bedcdc32e 100644
--- a/tools/testing/selftests/mm/mdwe_test.c
+++ b/tools/testing/selftests/mm/mdwe_test.c
@@ -7,7 +7,6 @@
 #include <linux/mman.h>
 #include <linux/prctl.h>
 
-#define _GNU_SOURCE
 #include <stdio.h>
 #include <stdlib.h>
 #include <sys/auxv.h>
-- 
2.34.1