public inbox for linux-mtd@lists.infradead.org
 help / color / mirror / Atom feed
From: Dan Carpenter <dan.carpenter@oracle.com>
To: "Rafał Miłecki" <rafal@milecki.pl>
Cc: Miquel Raynal <miquel.raynal@bootlin.com>,
	Richard Weinberger <richard@nod.at>,
	Vignesh Raghavendra <vigneshr@ti.com>,
	linux-mtd@lists.infradead.org, kernel-janitors@vger.kernel.org
Subject: [PATCH] mtd: parsers: tplink_safeloader: fix uninitialized variable bug
Date: Tue, 25 Oct 2022 18:34:24 +0300	[thread overview]
Message-ID: <Y1gCALFWXYYwqV1P@kili> (raw)

On 64 bit systems, the highest 32 bits of the "offset" variable are
not initialized.  Also the existing code is not endian safe (it will
fail on big endian systems).  Change the type of "offset" to a u32.

Fixes: aec4d5f5ffd0 ("mtd: parsers: add TP-Link SafeLoader partitions table parser")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
---
 drivers/mtd/parsers/tplink_safeloader.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/mtd/parsers/tplink_safeloader.c b/drivers/mtd/parsers/tplink_safeloader.c
index 23584a477391..f601e7bd8627 100644
--- a/drivers/mtd/parsers/tplink_safeloader.c
+++ b/drivers/mtd/parsers/tplink_safeloader.c
@@ -23,8 +23,8 @@ static void *mtd_parser_tplink_safeloader_read_table(struct mtd_info *mtd)
 	struct safeloader_cmn_header hdr;
 	struct device_node *np;
 	size_t bytes_read;
-	size_t offset;
 	size_t size;
+	u32 offset;
 	char *buf;
 	int err;
 
@@ -34,14 +34,14 @@ static void *mtd_parser_tplink_safeloader_read_table(struct mtd_info *mtd)
 	else
 		np = of_get_child_by_name(np, "partitions");
 
-	if (of_property_read_u32(np, "partitions-table-offset", (u32 *)&offset)) {
+	if (of_property_read_u32(np, "partitions-table-offset", &offset)) {
 		pr_err("Failed to get partitions table offset\n");
 		goto err_put;
 	}
 
 	err = mtd_read(mtd, offset, sizeof(hdr), &bytes_read, (uint8_t *)&hdr);
 	if (err && !mtd_is_bitflip(err)) {
-		pr_err("Failed to read from %s at 0x%zx\n", mtd->name, offset);
+		pr_err("Failed to read from %s at 0x%x\n", mtd->name, offset);
 		goto err_put;
 	}
 
-- 
2.35.1


______________________________________________________
Linux MTD discussion mailing list
http://lists.infradead.org/mailman/listinfo/linux-mtd/

             reply	other threads:[~2022-10-25 15:34 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-10-25 15:34 Dan Carpenter [this message]
2022-10-25 16:51 ` [PATCH] mtd: parsers: tplink_safeloader: fix uninitialized variable bug Rafał Miłecki
     [not found] ` <MN2PR17MB33758BC764511BB48B64192AB8319@MN2PR17MB3375.namprd17.prod.outlook.com>
2022-10-26  9:43   ` Dan Carpenter
2022-11-07 15:52 ` Miquel Raynal
2022-11-07 16:01   ` Rafał Miłecki
2022-11-07 16:10     ` Miquel Raynal
2022-11-07 16:22 ` Miquel Raynal

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=Y1gCALFWXYYwqV1P@kili \
    --to=dan.carpenter@oracle.com \
    --cc=kernel-janitors@vger.kernel.org \
    --cc=linux-mtd@lists.infradead.org \
    --cc=miquel.raynal@bootlin.com \
    --cc=rafal@milecki.pl \
    --cc=richard@nod.at \
    --cc=vigneshr@ti.com \
    /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
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox