linux-kernel - [PATCH v2 2/2] char: pcmcia: cm4040

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: <20210524230235.571-2-nizamhaider786@gmail.com>
Date:   Tue, 25 May 2021 04:32:35 +0530
From:   nizamhaider786@...il.com
To:     laforge@...monks.org
Cc:     arnd@...db.de, gregkh@...uxfoundation.org,
        linux-kernel@...r.kernel.org,
        Nijam Haider <nizamhaider786@...il.com>
Subject: [PATCH v2 2/2] char: pcmcia: cm4040_cs: Fix failure handling

From: Nijam Haider <nizamhaider786@...il.com>

Handled failure cases of device_create()

Signed-off-by: Nijam Haider <nizamhaider786@...il.com>
---
V1 -> V2: Added description and changelog
---
 drivers/char/pcmcia/cm4040_cs.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/drivers/char/pcmcia/cm4040_cs.c b/drivers/char/pcmcia/cm4040_cs.c
index d5e43606339c..526198be91fa 100644
--- a/drivers/char/pcmcia/cm4040_cs.c
+++ b/drivers/char/pcmcia/cm4040_cs.c
@@ -558,6 +558,7 @@ static void reader_release(struct pcmcia_device *link)
 static int reader_probe(struct pcmcia_device *link)
 {
 	struct reader_dev *dev;
+	struct device *dev_ret;
 	int i, ret;
 
 	for (i = 0; i < CM_MAX_DEV; i++) {
@@ -593,8 +594,14 @@ static int reader_probe(struct pcmcia_device *link)
 		return ret;
 	}
 
-	device_create(cmx_class, NULL, MKDEV(major, i), NULL, "cmx%d", i);
-
+	dev_ret = device_create(cmx_class, NULL, MKDEV(major, i), NULL, "cmx%d", i);
+	if (IS_ERR(dev_ret)) {
+		dev_err(&link->dev, "device_create failed for %d\n", i);
+		reader_release(link);
+		dev_table[i] = NULL;
+		kfree(dev);
+		return -ENODEV;
+	}
 	return 0;
 }
 
-- 
2.7.4