linux-kernel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: "Gustavo A. R. Silva" <gustavoars@kernel.org>
To: linux-kernel@vger.kernel.org
Cc: Kashyap Desai <kashyap.desai@broadcom.com>,
	Sumit Saxena <sumit.saxena@broadcom.com>,
	Shivasharan S <shivasharan.srikanteshwara@broadcom.com>,
	"James E.J. Bottomley" <jejb@linux.ibm.com>,
	"Martin K. Petersen" <martin.petersen@oracle.com>,
	megaraidlinux.pdl@broadcom.com, linux-scsi@vger.kernel.org,
	linux-hardening@vger.kernel.org,
	"Gustavo A. R. Silva" <gustavoars@kernel.org>
Subject: [PATCH v2 2/4][next] scsi: megaraid_sas: Replace one-element array with flexible-array member in MR_FW_RAID_MAP_DYNAMIC
Date: Wed, 4 Aug 2021 23:18:58 -0500	[thread overview]
Message-ID: <894f0df7940def9afe2bcd3b8a982404a45bcba9.1628136510.git.gustavoars@kernel.org> (raw)
In-Reply-To: <cover.1628136510.git.gustavoars@kernel.org>

Replace one-element array with a flexible-array member in struct
MR_FW_RAID_MAP_DYNAMIC.

This helps with the ongoing efforts to globally enable -Warray-bounds
and get us closer to being able to tighten the FORTIFY_SOURCE routines
on memcpy().

Link: https://en.wikipedia.org/wiki/Flexible_array_member
Link: https://www.kernel.org/doc/html/v5.10/process/deprecated.html#zero-length-and-one-element-arrays
Link: https://github.com/KSPP/linux/issues/79
Link: https://github.com/KSPP/linux/issues/109
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
---
Changes in v2:
 - None.

 drivers/scsi/megaraid/megaraid_sas_fusion.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.h b/drivers/scsi/megaraid/megaraid_sas_fusion.h
index a47139ef9ee2..9adb8b30f422 100644
--- a/drivers/scsi/megaraid/megaraid_sas_fusion.h
+++ b/drivers/scsi/megaraid/megaraid_sas_fusion.h
@@ -1053,7 +1053,7 @@ struct MR_FW_RAID_MAP_DYNAMIC {
 	struct MR_RAID_MAP_DESC_TABLE
 			raid_map_desc_table[RAID_MAP_DESC_TYPE_COUNT];
 	/* Variable Size buffer containing all data */
-	u32 raid_map_desc_data[1];
+	u32 raid_map_desc_data[];
 }; /* Dynamicaly sized RAID MAp structure */
 
 #define IEEE_SGE_FLAGS_ADDR_MASK            (0x03)
-- 
2.27.0


  parent reply	other threads:[~2021-08-05  4:16 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-05  4:17 [PATCH v2 0/4][next] scsi: megaraid_sas: Replace one-element arrays with flexible-array members Gustavo A. R. Silva
2021-08-05  4:18 ` [PATCH v2 1/4][next] scsi: megaraid_sas: Replace one-element array with flexible-array member in MR_FW_RAID_MAP Gustavo A. R. Silva
2021-08-05  4:18 ` Gustavo A. R. Silva [this message]
2021-08-05  4:20 ` [PATCH v2 3/4][next] scsi: megaraid_sas: Replace one-element array with flexible-array member in MR_DRV_RAID_MAP Gustavo A. R. Silva
2021-08-05  4:20 ` [PATCH v2 4/4][next] scsi: megaraid_sas: Replace one-element array with flexible-array member in MR_PD_CFG_SEQ_NUM_SYNC Gustavo A. R. Silva

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=894f0df7940def9afe2bcd3b8a982404a45bcba9.1628136510.git.gustavoars@kernel.org \
    --to=gustavoars@kernel.org \
    --cc=jejb@linux.ibm.com \
    --cc=kashyap.desai@broadcom.com \
    --cc=linux-hardening@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-scsi@vger.kernel.org \
    --cc=martin.petersen@oracle.com \
    --cc=megaraidlinux.pdl@broadcom.com \
    --cc=shivasharan.srikanteshwara@broadcom.com \
    --cc=sumit.saxena@broadcom.com \
    --subject='Re: [PATCH v2 2/4][next] scsi: megaraid_sas: Replace one-element array with flexible-array member in MR_FW_RAID_MAP_DYNAMIC' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).