From: Joe Perches <joe@perches.com>
To: Salah Triki <salah.triki@gmail.com>,
dan.j.williams@intel.com, vishal.l.verma@intel.com,
dave.jiang@intel.com
Cc: nvdimm@lists.linux.dev, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] dax: replace sprintf() by scnprintf()
Date: Sat, 10 Jul 2021 10:04:48 -0700 [thread overview]
Message-ID: <10621e048f62018432c42a3fccc1a5fd9a6d71d7.camel@perches.com> (raw)
In-Reply-To: <20210710164615.GA690067@pc>
On Sat, 2021-07-10 at 17:46 +0100, Salah Triki wrote:
> Replace sprintf() by scnprintf() in order to avoid buffer overflows.
OK but also not strictly necessary. DAX_NAME_LEN is 30.
Are you finding and changing these manually or with a script?
> diff --git a/drivers/dax/bus.c b/drivers/dax/bus.c
[]
> @@ -76,7 +76,7 @@ static ssize_t do_id_store(struct device_driver *drv, const char *buf,
> fields = sscanf(buf, "dax%d.%d", ®ion_id, &id);
> if (fields != 2)
> return -EINVAL;
> - sprintf(devname, "dax%d.%d", region_id, id);
> + scnprintf(devname, DAX_NAME_LEN, "dax%d.%d", region_id, id);
> if (!sysfs_streq(buf, devname))
> return -EINVAL;
>
>
next prev parent reply other threads:[~2021-07-11 22:23 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-10 16:46 [PATCH] dax: replace sprintf() by scnprintf() Salah Triki
2021-07-10 17:04 ` Joe Perches [this message]
2021-07-12 12:26 ` Salah Triki
2021-07-12 16:14 ` Joe Perches
2021-07-12 16:48 ` Salah Triki
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