From 6c90a1d02e1c716299ad78e0a11b79da60b46637 Mon Sep 17 00:00:00 2001
From: Gong Yuanjun <ruc_gongyuanjun@163.com>
Date: Fri, 14 Mar 2025 09:15:49 +0000
Subject: [PATCH] mips: cpc: Fix refcount leak in mips_cpc_default_phys_base

stable inclusion
from stable-v4.19.247
commit 961ee8a6eeef4632a215d995d837b204f8c7c2d4
category: bugfix
bugzilla: https://gitee.com/src-openeuler/kernel/issues/IBP2G2
CVE: CVE-2022-49324

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=961ee8a6eeef4632a215d995d837b204f8c7c2d4

----------------------

[ Upstream commit 4107fa700f314592850e2c64608f6ede4c077476 ]

Add the missing of_node_put() to release the refcount incremented
by of_find_compatible_node().

Signed-off-by: Gong Yuanjun <ruc_gongyuanjun@163.com>
Reviewed-by: Serge Semin <fancer.lancer@gmail.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Liu Chuang <liuchuang40@huawei.com>
---
 arch/mips/kernel/mips-cpc.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/mips/kernel/mips-cpc.c b/arch/mips/kernel/mips-cpc.c
index fcf9af492d60..cf46502c605e 100644
--- a/arch/mips/kernel/mips-cpc.c
+++ b/arch/mips/kernel/mips-cpc.c
@@ -31,6 +31,7 @@ phys_addr_t __weak mips_cpc_default_phys_base(void)
 	cpc_node = of_find_compatible_node(of_root, NULL, "mti,mips-cpc");
 	if (cpc_node) {
 		err = of_address_to_resource(cpc_node, 0, &res);
+		of_node_put(cpc_node);
 		if (!err)
 			return res.start;
 	}
-- 
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