linux-kernel - [PATCH 2/2] s390/iucv: Fix vargs handling in iucv_alloc

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Message-ID: <patch-2.thread-d8267b.git-d8267bded9e9.your-ad-here.call-01723545029-ext-2515@work.hours>
Date: Tue, 13 Aug 2024 12:42:37 +0200
From: Vasily Gorbik <gor@...ux.ibm.com>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>
Cc: Andrew Morton <akpm@...ux-foundation.org>, linux-kernel@...r.kernel.org,
        Alexandra Winter <wintera@...ux.ibm.com>,
        Heiko Carstens <hca@...ux.ibm.com>, linux-s390@...r.kernel.org
Subject: [PATCH 2/2] s390/iucv: Fix vargs handling in iucv_alloc_device()

From: Heiko Carstens <hca@...ux.ibm.com>

iucv_alloc_device() gets a format string and a varying number of
arguments. This is incorrectly forwarded by calling dev_set_name() with
the format string and a va_list, while dev_set_name() expects also a
varying number of arguments.

Fix this and call kobject_set_name_vargs() instead which expects a
va_list parameter.

Fixes: 4452e8ef8c36 ("s390/iucv: Provide iucv_alloc_device() / iucv_release_device()")
Reference-ID: https://bugzilla.linux.ibm.com/show_bug.cgi?id=208008
Reviewed-by: Alexandra Winter <wintera@...ux.ibm.com>
Signed-off-by: Heiko Carstens <hca@...ux.ibm.com>
---
 net/iucv/iucv.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/iucv/iucv.c b/net/iucv/iucv.c
index 1e42e13ad24e..64102a31b569 100644
--- a/net/iucv/iucv.c
+++ b/net/iucv/iucv.c
@@ -92,7 +92,7 @@ struct device *iucv_alloc_device(const struct attribute_group **attrs,
 	if (!dev)
 		goto out_error;
 	va_start(vargs, fmt);
-	rc = dev_set_name(dev, fmt, vargs);
+	rc = kobject_set_name_vargs(&dev->kobj, fmt, vargs);
 	va_end(vargs);
 	if (rc)
 		goto out_error;
-- 
2.41.0