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From: Wen Yang <wen.yang99@zte.com.cn>
To: linux-kernel@vger.kernel.org
Cc: wang.yi59@zte.com.cn, "Russell King" <linux@armlinux.org.uk>,
	"Andreas Färber" <afaerber@suse.de>,
	"Manivannan Sadhasivam" <manivannan.sadhasivam@linaro.org>,
	"Wen Yang" <wen.yang99@zte.com.cn>,
	linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 01/15] ARM: actions: fix a leaked reference by adding missing of_node_put
Date: Tue, 5 Mar 2019 19:33:52 +0800	[thread overview]
Message-ID: <1551785646-46173-1-git-send-email-wen.yang99@zte.com.cn> (raw)

The call to of_get_next_child returns a node pointer with refcount
incremented thus it must be explicitly decremented after the last
usage.

Detected by coccinelle with the following warnings:
./arch/arm/mach-actions/platsmp.c:112:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 103, but without a corresponding object release within this function.
./arch/arm/mach-actions/platsmp.c:124:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 115, but without a corresponding object release within this function.
./arch/arm/mach-actions/platsmp.c:137:3-9: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 128, but without a corresponding object release within this function.

Signed-off-by: Wen Yang <wen.yang99@zte.com.cn>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Cc: "Andreas Färber" <afaerber@suse.de>
Cc: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
---
v2->v1: add a missing space between "adding" and "missing"

 arch/arm/mach-actions/platsmp.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/arm/mach-actions/platsmp.c b/arch/arm/mach-actions/platsmp.c
index 4fd479c..1a8e078 100644
--- a/arch/arm/mach-actions/platsmp.c
+++ b/arch/arm/mach-actions/platsmp.c
@@ -107,6 +107,7 @@ static void __init s500_smp_prepare_cpus(unsigned int max_cpus)
 	}
 
 	timer_base_addr = of_iomap(node, 0);
+	of_node_put(node);
 	if (!timer_base_addr) {
 		pr_err("%s: could not map timer registers\n", __func__);
 		return;
@@ -119,6 +120,7 @@ static void __init s500_smp_prepare_cpus(unsigned int max_cpus)
 	}
 
 	sps_base_addr = of_iomap(node, 0);
+	of_node_put(node);
 	if (!sps_base_addr) {
 		pr_err("%s: could not map sps registers\n", __func__);
 		return;
@@ -132,6 +134,7 @@ static void __init s500_smp_prepare_cpus(unsigned int max_cpus)
 		}
 
 		scu_base_addr = of_iomap(node, 0);
+		of_node_put(node);
 		if (!scu_base_addr) {
 			pr_err("%s: could not map scu registers\n", __func__);
 			return;
-- 
2.9.5


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             reply	other threads:[~2019-03-05 11:33 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-03-05 11:33 Wen Yang [this message]
2019-03-05 11:33 ` [PATCH v2 02/15] ARM: bcm: fix a leaked reference by adding missing of_node_put Wen Yang
2019-03-05 17:24   ` Ray Jui
2019-03-08 18:50     ` Florian Fainelli
2019-03-05 11:33 ` [PATCH v2 03/15] ARM: exynos: " Wen Yang
2019-03-19 20:39   ` Krzysztof Kozlowski
2019-03-05 11:33 ` [PATCH v2 04/15] ARM: hisi: " Wen Yang
2019-04-05 11:26   ` Markus Elfring
2019-03-05 11:33 ` [PATCH v2 05/15] ARM: imx51: " Wen Yang
2019-03-06  2:58   ` Shawn Guo
2019-03-05 11:33 ` [PATCH v2 06/15] arm: npcm: " Wen Yang
2019-03-06 12:02   ` Avi Fishman
2019-03-05 11:33 ` [PATCH v2 07/15] ARM: rockchip: " Wen Yang
2019-04-23 17:48   ` Heiko Stuebner
2019-03-05 11:33 ` [PATCH v2 08/15] ARM: shmobile: " Wen Yang
2019-03-08 12:07   ` Simon Horman
2019-03-05 11:34 ` [PATCH v2 09/15] ARM: socfpga: " Wen Yang
2019-03-05 11:34 ` [PATCH v2 10/15] ARM: sunxi: " Wen Yang
2019-03-05 11:59   ` maxime.ripard
2019-03-05 11:34 ` [PATCH v2 11/15] ARM: versatile: " Wen Yang
2019-03-05 11:34 ` [PATCH v2 12/15] ARM: vexpress: " Wen Yang
2019-03-05 11:39   ` Sudeep Holla
2019-03-05 11:34 ` [PATCH v2 13/15] ARM: zynq: " Wen Yang
2019-03-05 11:34 ` [PATCH v2 14/15] arm64: cpu_ops: " Wen Yang
2019-04-01 15:37   ` Will Deacon
     [not found]     ` <201904031356099956278@zte.com.cn>
2019-04-03 12:44       ` 答复: Re: [PATCH v2 14/15] arm64: cpu_ops: fix a leaked reference byadding " Will Deacon
2019-03-05 11:34 ` [PATCH v2 15/15] ARM: axxia: fix a leaked reference by adding " Wen Yang
2019-03-05 11:40 ` [PATCH v2 01/15] ARM: actions: " Russell King - ARM Linux admin
2019-03-09  2:17   ` Manivannan Sadhasivam
2019-03-09  8:14     ` Russell King - ARM Linux admin

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