From: Jiasheng Jiang <jiashengjiangcool@gmail.com>
To: gregkh@linuxfoundation.org
Cc: GR-QLogic-Storage-Upstream@marvell.com,
James.Bottomley@hansenpartnership.com, arun.easi@cavium.com,
bvanassche@acm.org, jhasan@marvell.com,
jiashengjiangcool@gmail.com, linux-kernel@vger.kernel.org,
linux-scsi@vger.kernel.org, manish.rangankar@cavium.com,
markus.elfring@web.de, martin.petersen@oracle.com,
nilesh.javali@cavium.com, skashyap@marvell.com,
stable@vger.kernel.org
Subject: [PATCH v2 1/2] scsi: qedf: Replace kmalloc_array() with kcalloc()
Date: Thu, 6 Feb 2025 19:19:59 +0000 [thread overview]
Message-ID: <20250206192000.17827-1-jiashengjiangcool@gmail.com> (raw)
In-Reply-To: <2025020658-backlog-riot-5faf@gregkh>
Replace kmalloc_array() with kcalloc() to avoid old (dirty) data being
used/freed.
Fixes: 61d8658b4a43 ("scsi: qedf: Add QLogic FastLinQ offload FCoE driver framework.")
Cc: <stable@vger.kernel.org> # v5.10+
Signed-off-by: Jiasheng Jiang <jiashengjiangcool@gmail.com>
---
Changlog:
v1 -> v2:
1. Replace kzalloc() with kcalloc() to not reintroduce the possibility of multiplication overflow.
---
drivers/scsi/qedf/qedf_io.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/drivers/scsi/qedf/qedf_io.c b/drivers/scsi/qedf/qedf_io.c
index fcfc3bed02c6..d52057b97a4f 100644
--- a/drivers/scsi/qedf/qedf_io.c
+++ b/drivers/scsi/qedf/qedf_io.c
@@ -254,9 +254,7 @@ struct qedf_cmd_mgr *qedf_cmd_mgr_alloc(struct qedf_ctx *qedf)
}
/* Allocate pool of io_bdts - one for each qedf_ioreq */
- cmgr->io_bdt_pool = kmalloc_array(num_ios, sizeof(struct io_bdt *),
- GFP_KERNEL);
-
+ cmgr->io_bdt_pool = kcalloc(num_ios, sizeof(*cmgr->io_bdt_pool), GFP_KERNEL);
if (!cmgr->io_bdt_pool) {
QEDF_WARN(&(qedf->dbg_ctx), "Failed to alloc io_bdt_pool.\n");
goto mem_err;
--
2.25.1
next prev parent reply other threads:[~2025-02-06 19:20 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <d4db5506-6ace-4585-972e-6b7a6fc882a4@web.de>
[not found] ` <20250206052523.16683-1-jiashengjiangcool@gmail.com>
2025-02-06 5:25 ` [PATCH 1/2] scsi: qedf: Replace kmalloc_array() with kcalloc() Jiasheng Jiang
2025-02-06 5:36 ` Greg KH
2025-02-06 5:38 ` Greg KH
2025-02-06 19:19 ` Jiasheng Jiang [this message]
2025-02-06 19:20 ` [PATCH v2 2/2] scsi: qedf: Add check for bdt_info Jiasheng Jiang
2025-02-07 15:09 ` [PATCH v2 1/2] scsi: qedf: Replace kmalloc_array() with kcalloc() Greg KH
2025-02-07 15:45 ` [PATCH v3 " Jiasheng Jiang
2025-02-07 15:45 ` [PATCH v3 2/2] scsi: qedf: Add check for bdt_info Jiasheng Jiang
2025-02-07 15:46 ` [PATCH v2 1/2] scsi: qedf: Replace kmalloc_array() with kcalloc() Jiasheng Jiang
2025-02-06 5:25 ` [PATCH 2/2] scsi: qedf: Add check for bdt_info Jiasheng Jiang
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