linux-kernel - [PATCH v2 1/2] cdx: call of_node

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: <2e66efc4-a13a-4774-8c9d-763455fe4834@moroto.mountain>
Date: Tue, 2 Jan 2024 16:10:21 +0300
From: Dan Carpenter <dan.carpenter@...aro.org>
To: Abhijit Gangurde <abhijit.gangurde@....com>
Cc: Nipun Gupta <nipun.gupta@....com>,
	Nikhil Agarwal <nikhil.agarwal@....com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: [PATCH v2 1/2] cdx: call of_node_put() on error path

Add a missing call to of_node_put(np) on error.

There was a second error path where "np" was NULL, but that situation is
impossible.  The for_each_compatible_node() loop iterator is always
non-NULL.  Just deleted that error path.

Fixes: 54b406e10f03 ("cdx: Remove cdx controller list from cdx bus system")
Signed-off-by: Dan Carpenter <dan.carpenter@...aro.org>
---
v2: Christophe JAILLET pointed out this bug so I added this patch
    to the patchset.

 drivers/cdx/cdx.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/cdx/cdx.c b/drivers/cdx/cdx.c
index d84d153078d7..40035dd2e299 100644
--- a/drivers/cdx/cdx.c
+++ b/drivers/cdx/cdx.c
@@ -572,12 +572,11 @@ static ssize_t rescan_store(const struct bus_type *bus,
 
 	/* Rescan all the devices */
 	for_each_compatible_node(np, NULL, compat_node_name) {
-		if (!np)
-			return -EINVAL;
-
 		pd = of_find_device_by_node(np);
-		if (!pd)
+		if (!pd) {
+			of_node_put(np);
 			return -EINVAL;
+		}
 
 		cdx = platform_get_drvdata(pd);
 		if (cdx && cdx->controller_registered && cdx->ops->scan)
-- 
2.42.0