linux-kernel - [PATCH] ARM: ux500: Fix refcount leak in ux500_pm_domains

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]

Date:   Mon,  2 Jan 2023 13:47:33 +0400
From:   Miaoqian Lin <linmq006@...il.com>
To:     Linus Walleij <linus.walleij@...aro.org>,
        Russell King <linux@...linux.org.uk>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:     linmq006@...il.com
Subject: [PATCH] ARM: ux500: Fix refcount leak in ux500_pm_domains_init

of_irq_find_parent() returns a node pointer with refcount incremented,
We should use of_node_put() on it when not needed anymore.
Add missing of_node_put() in the error path to avoid refcount leak.

Fixes: cd931dcfda5e ("ARM: ux500: Initial support for PM domains")
Signed-off-by: Miaoqian Lin <linmq006@...il.com>
---
 arch/arm/mach-ux500/pm_domains.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/arch/arm/mach-ux500/pm_domains.c b/arch/arm/mach-ux500/pm_domains.c
index 427b9ac4af6c..01cae91854ca 100644
--- a/arch/arm/mach-ux500/pm_domains.c
+++ b/arch/arm/mach-ux500/pm_domains.c
@@ -65,8 +65,10 @@ int __init ux500_pm_domains_init(void)
 		return -ENODEV;
 
 	genpd_data = kzalloc(sizeof(*genpd_data), GFP_KERNEL);
-	if (!genpd_data)
+	if (!genpd_data) {
+		of_node_put(np);
 		return -ENOMEM;
+	}
 
 	genpd_data->domains = ux500_pm_domains;
 	genpd_data->num_domains = ARRAY_SIZE(ux500_pm_domains);
-- 
2.25.1