linux-hardening - [PATCH 05/10] string: kunit: Mark nonstring test strings as _

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Message-Id: <20250207010022.749952-5-kees@kernel.org>
Date: Thu,  6 Feb 2025 17:00:14 -0800
From: Kees Cook <kees@...nel.org>
To: Andy Shevchenko <andy@...nel.org>
Cc: Kees Cook <kees@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-hardening@...r.kernel.org,
	Sathya Prakash <sathya.prakash@...adcom.com>,
	Sreekanth Reddy <sreekanth.reddy@...adcom.com>,
	Suganath Prabu Subramani <suganath-prabu.subramani@...adcom.com>,
	Kashyap Desai <kashyap.desai@...adcom.com>,
	Sumit Saxena <sumit.saxena@...adcom.com>,
	"James E.J. Bottomley" <James.Bottomley@...senPartnership.com>,
	"Martin K. Petersen" <martin.petersen@...cle.com>,
	Nilesh Javali <njavali@...vell.com>,
	"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
	Dave Hansen <dave.hansen@...ux.intel.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	Borislav Petkov <bp@...en8.de>,
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Subject: [PATCH 05/10] string: kunit: Mark nonstring test strings as __nonstring

In preparation for strtomem*() checking that its destination is a
__nonstring, annotate "nonstring" and "nonstring_small" variables
accordingly.

Signed-off-by: Kees Cook <kees@...nel.org>
---
Cc: Andy Shevchenko <andy@...nel.org>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: linux-hardening@...r.kernel.org
---
 lib/string_kunit.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/string_kunit.c b/lib/string_kunit.c
index c919e3293da6..0ed7448a26d3 100644
--- a/lib/string_kunit.c
+++ b/lib/string_kunit.c
@@ -579,8 +579,8 @@ static void string_test_strtomem(struct kunit *test)
 
 static void string_test_memtostr(struct kunit *test)
 {
-	char nonstring[7] = { 'a', 'b', 'c', 'd', 'e', 'f', 'g' };
-	char nonstring_small[3] = { 'a', 'b', 'c' };
+	char nonstring[7] __nonstring = { 'a', 'b', 'c', 'd', 'e', 'f', 'g' };
+	char nonstring_small[3] __nonstring = { 'a', 'b', 'c' };
 	char dest[sizeof(nonstring) + 1];
 
 	/* Copy in a non-NUL-terminated string into exactly right-sized dest. */
-- 
2.34.1