linux-kernel - [PATCH 4.4 01/31] openrisc: Fix a memory leak

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Date:   Mon, 24 May 2021 17:24:44 +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,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>,
        Stafford Horne <shorne@...il.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.4 01/31] openrisc: Fix a memory leak

From: Christophe JAILLET <christophe.jaillet@...adoo.fr>

[ Upstream commit c019d92457826bb7b2091c86f36adb5de08405f9 ]

'setup_find_cpu_node()' take a reference on the node it returns.
This reference must be decremented when not needed anymore, or there will
be a leak.

Add the missing 'of_node_put(cpu)'.

Note that 'setup_cpuinfo()' that also calls this function already has a
correct 'of_node_put(cpu)' at its end.

Fixes: 9d02a4283e9c ("OpenRISC: Boot code")
Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
Signed-off-by: Stafford Horne <shorne@...il.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 arch/openrisc/kernel/setup.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/openrisc/kernel/setup.c b/arch/openrisc/kernel/setup.c
index b4ed8b36e078..e5f5b69a7b7b 100644
--- a/arch/openrisc/kernel/setup.c
+++ b/arch/openrisc/kernel/setup.c
@@ -278,6 +278,8 @@ void calibrate_delay(void)
 	pr_cont("%lu.%02lu BogoMIPS (lpj=%lu)\n",
 		loops_per_jiffy / (500000 / HZ),
 		(loops_per_jiffy / (5000 / HZ)) % 100, loops_per_jiffy);
+
+	of_node_put(cpu);
 }
 
 void __init setup_arch(char **cmdline_p)
-- 
2.30.2