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From: Kees Cook <kees@kernel.org>
To: Jack Wang <jinpu.wang@cloud.ionos.com>
Cc: Kees Cook <kees@kernel.org>,
	"James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>,
	"Martin K. Petersen" <martin.petersen@oracle.com>,
	linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-hardening@vger.kernel.org
Subject: [PATCH] scsi: pm80xx: Add __nonstring annotations for unterminated strings
Date: Mon, 10 Mar 2025 15:25:54 -0700	[thread overview]
Message-ID: <20250310222553.work.437-kees@kernel.org> (raw)

When a character array without a terminating NUL character has a static
initializer, GCC 15's -Wunterminated-string-initialization will only
warn if the array lacks the "nonstring" attribute[1]. Mark the arrays
with __nonstring to and correctly identify the char array as "not a C
string" and thereby eliminate the warning.

Link: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117178 [1]
Cc: Jack Wang <jinpu.wang@cloud.ionos.com>
Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: linux-scsi@vger.kernel.org
Signed-off-by: Kees Cook <kees@kernel.org>
---
 drivers/scsi/pm8001/pm8001_ctl.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/scsi/pm8001/pm8001_ctl.c b/drivers/scsi/pm8001/pm8001_ctl.c
index 85ff95c6543a..7618f9cc9986 100644
--- a/drivers/scsi/pm8001/pm8001_ctl.c
+++ b/drivers/scsi/pm8001/pm8001_ctl.c
@@ -644,7 +644,7 @@ static DEVICE_ATTR(gsm_log, S_IRUGO, pm8001_ctl_gsm_log_show, NULL);
 #define FLASH_CMD_SET_NVMD    0x02
 
 struct flash_command {
-     u8      command[8];
+     u8      command[8] __nonstring;
      int     code;
 };
 
-- 
2.34.1


             reply	other threads:[~2025-03-10 22:25 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-03-10 22:25 Kees Cook [this message]
2025-03-10 22:38 ` [PATCH] scsi: pm80xx: Add __nonstring annotations for unterminated strings James Bottomley
2025-04-07 18:37   ` Kees Cook
2025-04-12  1:55     ` Martin K. Petersen

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