linux-hardening - [PATCH 01/10][next] scsi: aacraid: Replace one-element array with flexible-array member

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Date:   Wed, 28 Jun 2023 11:54:27 -0600
From:   "Gustavo A. R. Silva" <gustavoars@...nel.org>
To:     aacraid@...rosemi.com, "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>
Cc:     linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org,
        Kees Cook <keescook@...omium.org>,
        "Gustavo A. R. Silva" <gustavoars@...nel.org>,
        linux-hardening@...r.kernel.org
Subject: [PATCH 01/10][next] scsi: aacraid: Replace one-element array with
 flexible-array member

Replace one-element array with flexible-array member in struct
aac_ciss_phys_luns_resp.

This results in no differences in binary output.

Issue found with the help of Coccinelle and audited and fixed,
manually.

Link: https://github.com/KSPP/linux/issues/79
Link: https://github.com/ClangBuiltLinux/linux/issues/1851
Signed-off-by: Gustavo A. R. Silva <gustavoars@...nel.org>
---
 drivers/scsi/aacraid/aachba.c  | 2 +-
 drivers/scsi/aacraid/aacraid.h | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/scsi/aacraid/aachba.c b/drivers/scsi/aacraid/aachba.c
index 70e1cac1975e..bba2d4d952ca 100644
--- a/drivers/scsi/aacraid/aachba.c
+++ b/drivers/scsi/aacraid/aachba.c
@@ -1833,7 +1833,7 @@ static int aac_get_safw_ciss_luns(struct aac_dev *dev)
 	struct aac_ciss_phys_luns_resp *phys_luns;
 
 	datasize = sizeof(struct aac_ciss_phys_luns_resp) +
-		(AAC_MAX_TARGETS - 1) * sizeof(struct _ciss_lun);
+		   AAC_MAX_TARGETS * sizeof(struct _ciss_lun);
 	phys_luns = kmalloc(datasize, GFP_KERNEL);
 	if (phys_luns == NULL)
 		goto out;
diff --git a/drivers/scsi/aacraid/aacraid.h b/drivers/scsi/aacraid/aacraid.h
index 7c6efde75da6..83fa890f28be 100644
--- a/drivers/scsi/aacraid/aacraid.h
+++ b/drivers/scsi/aacraid/aacraid.h
@@ -322,7 +322,7 @@ struct aac_ciss_phys_luns_resp {
 		u8	level3[2];
 		u8	level2[2];
 		u8	node_ident[16];	/* phys. node identifier */
-	} lun[1];			/* List of phys. devices */
+	} lun[];			/* List of phys. devices */
 };
 
 /*
-- 
2.34.1