From ce675043fa12dfc50276e00f31da61e14846b178 Mon Sep 17 00:00:00 2001 From: Tian Tao <tiantao6@hisilicon.com> Date: Mon, 12 Apr 2021 17:35:44 +0800 Subject: mtd: mtdpart: Convert sysfs sprintf/snprintf family to sysfs_emit Use sysfs_emit instead of snprintf to avoid buf overrun,because in sysfs_emit it strictly checks whether buf is null or buf whether pagesize aligned, otherwise it returns an error. Signed-off-by: Tian Tao <tiantao6@hisilicon.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/1618220144-33839-3-git-send-email-tiantao6@hisilicon.com --- drivers/mtd/mtdpart.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/mtd/mtdpart.c') diff --git a/drivers/mtd/mtdpart.c b/drivers/mtd/mtdpart.c index 665fd9020b76..66a67c6e3cbc 100644 --- a/drivers/mtd/mtdpart.c +++ b/drivers/mtd/mtdpart.c @@ -217,7 +217,7 @@ static ssize_t mtd_partition_offset_show(struct device *dev, { struct mtd_info *mtd = dev_get_drvdata(dev); - return snprintf(buf, PAGE_SIZE, "%lld\n", mtd->part.offset); + return sysfs_emit(buf, "%lld\n", mtd->part.offset); } static DEVICE_ATTR(offset, S_IRUGO, mtd_partition_offset_show, NULL); -- cgit v1.2.3-58-ga151