linux-kernel - [PATCH -next 2/2] sparc: use snprintf() in show_pciobppath

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20200509091849.116954-3-chenzhou10@huawei.com>
Date:   Sat, 9 May 2020 17:18:49 +0800
From:   Chen Zhou <chenzhou10@...wei.com>
To:     <davem@...emloft.net>
CC:     <sparclinux@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <chenzhou10@...wei.com>
Subject: [PATCH -next 2/2] sparc: use snprintf() in show_pciobppath_attr() in vio.c

snprintf() returns the number of bytes that would be written,
which may be greater than the the actual length to be written.

show_pciobppath_attr() should return the number of bytes printed
into the buffer. This is the return value of scnprintf().

Signed-off-by: Chen Zhou <chenzhou10@...wei.com>
---
 arch/sparc/kernel/vio.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/sparc/kernel/vio.c b/arch/sparc/kernel/vio.c
index c7cad9b7bba7..4f57056ed463 100644
--- a/arch/sparc/kernel/vio.c
+++ b/arch/sparc/kernel/vio.c
@@ -193,7 +193,7 @@ show_pciobppath_attr(struct device *dev, struct device_attribute *attr,
 	vdev = to_vio_dev(dev);
 	dp = vdev->dp;
 
-	return snprintf (buf, PAGE_SIZE, "%pOF\n", dp);
+	return scnprintf(buf, PAGE_SIZE, "%pOF\n", dp);
 }
 
 static DEVICE_ATTR(obppath, S_IRUSR | S_IRGRP | S_IROTH,
-- 
2.20.1