linux-kernel - [PATCH] xen: check return value of xenbus

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-next>] [day] [month] [year] [list]

Message-Id: <1444934412-18248-1-git-send-email-wuninsu@gmail.com>
Date:	Thu, 15 Oct 2015 18:40:12 +0000
From:	Insu Yun <wuninsu@...il.com>
To:	dmitry.torokhov@...il.com, david.vrabel@...rix.com,
	wei.liu2@...rix.com, julien.grall@...rix.com,
	stefano.stabellini@...citrix.com, huaixin.chx@...baba-inc.com,
	linux-input@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:	taesoo@...ech.edu, yeongjin.jang@...ech.edu, insu@...ech.edu,
	Insu Yun <wuninsu@...il.com>
Subject: [PATCH] xen: check return value of xenbus_printf

Signed-off-by: Insu Yun <wuninsu@...il.com>
---
 drivers/input/misc/xen-kbdfront.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/drivers/input/misc/xen-kbdfront.c b/drivers/input/misc/xen-kbdfront.c
index 23d0549..9d465d7 100644
--- a/drivers/input/misc/xen-kbdfront.c
+++ b/drivers/input/misc/xen-kbdfront.c
@@ -129,8 +129,14 @@ static int xenkbd_probe(struct xenbus_device *dev,
 
 	if (xenbus_scanf(XBT_NIL, dev->otherend, "feature-abs-pointer", "%d", &abs) < 0)
 		abs = 0;
-	if (abs)
-		xenbus_printf(XBT_NIL, dev->nodename, "request-abs-pointer", "1");
+	if (abs) {
+		ret = xenbus_printf(XBT_NIL, dev->nodename,
+					"request-abs-pointer", "1");
+		if (ret) {
+			pr_warning("xenkbd: can't request abs-pointer");
+			abs = 0;
+		}
+	}
 
 	/* keyboard */
 	kbd = input_allocate_device();
-- 
1.9.1

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/