linux-kernel - [PATCH 5.15 646/779] powerpc/spufs: Fix refcount leak in spufs_init_isolated

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Message-Id: <20220815180404.979237902@linuxfoundation.org>
Date:   Mon, 15 Aug 2022 20:04:50 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Miaoqian Lin <linmq006@...il.com>,
        Arnd Bergmann <arnd@...db.de>,
        Michael Ellerman <mpe@...erman.id.au>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.15 646/779] powerpc/spufs: Fix refcount leak in spufs_init_isolated_loader

From: Miaoqian Lin <linmq006@...il.com>

[ Upstream commit 6ac059dacffa8ab2f7798f20e4bd3333890c541c ]

of_find_node_by_path() returns remote device nodepointer with
refcount incremented, we should use of_node_put() on it when done.
Add missing of_node_put() to avoid refcount leak.

Fixes: 0afacde3df4c ("[POWERPC] spufs: allow isolated mode apps by starting the SPE loader")
Signed-off-by: Miaoqian Lin <linmq006@...il.com>
Acked-by: Arnd Bergmann <arnd@...db.de>
Signed-off-by: Michael Ellerman <mpe@...erman.id.au>
Link: https://lore.kernel.org/r/20220603121543.22884-1-linmq006@gmail.com
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 arch/powerpc/platforms/cell/spufs/inode.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/powerpc/platforms/cell/spufs/inode.c b/arch/powerpc/platforms/cell/spufs/inode.c
index bed05b644c2c..ed37a93bf858 100644
--- a/arch/powerpc/platforms/cell/spufs/inode.c
+++ b/arch/powerpc/platforms/cell/spufs/inode.c
@@ -659,6 +659,7 @@ spufs_init_isolated_loader(void)
 		return;
 
 	loader = of_get_property(dn, "loader", &size);
+	of_node_put(dn);
 	if (!loader)
 		return;
 
-- 
2.35.1