From: Wen Yang <wen.yang99@zte.com.cn> To: linux-kernel@vger.kernel.org Cc: wang.yi59@zte.com.cn, Wen Yang <wen.yang99@zte.com.cn>, Liviu Dudau <liviu.dudau@arm.com>, Sudeep Holla <sudeep.holla@arm.com>, Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>, Russell King <linux@armlinux.org.uk>, linux-arm-kernel@lists.infradead.org Subject: [PATCH v2 12/15] ARM: vexpress: fix a leaked reference by adding missing of_node_put Date: Tue, 5 Mar 2019 19:34:03 +0800 [thread overview] Message-ID: <1551785646-46173-12-git-send-email-wen.yang99@zte.com.cn> (raw) In-Reply-To: <1551785646-46173-1-git-send-email-wen.yang99@zte.com.cn> 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-vexpress/dcscb.c:150:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 145, but without a corresponding object release within this function. ./arch/arm/mach-vexpress/dcscb.c:160:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 145, but without a corresponding object release within this function. ./arch/arm/mach-vexpress/dcscb.c:171:1-7: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 145, 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: Liviu Dudau <liviu.dudau@arm.com> Cc: Sudeep Holla <sudeep.holla@arm.com> Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> 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-vexpress/dcscb.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/mach-vexpress/dcscb.c b/arch/arm/mach-vexpress/dcscb.c index ee2a0fa..aaade91 100644 --- a/arch/arm/mach-vexpress/dcscb.c +++ b/arch/arm/mach-vexpress/dcscb.c @@ -146,6 +146,7 @@ static int __init dcscb_init(void) if (!node) return -ENODEV; dcscb_base = of_iomap(node, 0); + of_node_put(node); if (!dcscb_base) return -EADDRNOTAVAIL; cfg = readl_relaxed(dcscb_base + DCS_CFG_R); -- 2.9.5
WARNING: multiple messages have this Message-ID (diff)
From: Wen Yang <wen.yang99@zte.com.cn> To: linux-kernel@vger.kernel.org Cc: wang.yi59@zte.com.cn, Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>, Liviu Dudau <liviu.dudau@arm.com>, Russell King <linux@armlinux.org.uk>, Sudeep Holla <sudeep.holla@arm.com>, Wen Yang <wen.yang99@zte.com.cn>, linux-arm-kernel@lists.infradead.org Subject: [PATCH v2 12/15] ARM: vexpress: fix a leaked reference by adding missing of_node_put Date: Tue, 5 Mar 2019 19:34:03 +0800 [thread overview] Message-ID: <1551785646-46173-12-git-send-email-wen.yang99@zte.com.cn> (raw) In-Reply-To: <1551785646-46173-1-git-send-email-wen.yang99@zte.com.cn> 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-vexpress/dcscb.c:150:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 145, but without a corresponding object release within this function. ./arch/arm/mach-vexpress/dcscb.c:160:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 145, but without a corresponding object release within this function. ./arch/arm/mach-vexpress/dcscb.c:171:1-7: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 145, 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: Liviu Dudau <liviu.dudau@arm.com> Cc: Sudeep Holla <sudeep.holla@arm.com> Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> 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-vexpress/dcscb.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/mach-vexpress/dcscb.c b/arch/arm/mach-vexpress/dcscb.c index ee2a0fa..aaade91 100644 --- a/arch/arm/mach-vexpress/dcscb.c +++ b/arch/arm/mach-vexpress/dcscb.c @@ -146,6 +146,7 @@ static int __init dcscb_init(void) if (!node) return -ENODEV; dcscb_base = of_iomap(node, 0); + of_node_put(node); if (!dcscb_base) return -EADDRNOTAVAIL; cfg = readl_relaxed(dcscb_base + DCS_CFG_R); -- 2.9.5 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2019-03-05 11:33 UTC|newest] Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-03-05 11:33 [PATCH v2 01/15] ARM: actions: fix a leaked reference by adding missing of_node_put Wen Yang 2019-03-05 11:33 ` Wen Yang 2019-03-05 11:33 ` [PATCH v2 02/15] ARM: bcm: " Wen Yang 2019-03-05 11:33 ` Wen Yang 2019-03-05 17:24 ` Ray Jui 2019-03-05 17:24 ` Ray Jui 2019-03-08 18:50 ` Florian Fainelli 2019-03-08 18:50 ` Florian Fainelli 2019-03-05 11:33 ` [PATCH v2 03/15] ARM: exynos: " Wen Yang 2019-03-05 11:33 ` Wen Yang 2019-03-05 11:33 ` Wen Yang 2019-03-19 20:39 ` Krzysztof Kozlowski 2019-03-19 20:39 ` Krzysztof Kozlowski 2019-03-05 11:33 ` [PATCH v2 04/15] ARM: hisi: " Wen Yang 2019-03-05 11:33 ` Wen Yang 2019-04-05 11:26 ` Markus Elfring 2019-04-05 11:26 ` Markus Elfring 2019-03-05 11:33 ` [PATCH v2 05/15] ARM: imx51: " Wen Yang 2019-03-05 11:33 ` Wen Yang 2019-03-06 2:58 ` Shawn Guo 2019-03-06 2:58 ` Shawn Guo 2019-03-05 11:33 ` [PATCH v2 06/15] arm: npcm: " Wen Yang 2019-03-05 11:33 ` Wen Yang 2019-03-06 12:02 ` Avi Fishman 2019-03-06 12:02 ` Avi Fishman 2019-03-06 12:02 ` Avi Fishman 2019-03-05 11:33 ` [PATCH v2 07/15] ARM: rockchip: " Wen Yang 2019-03-05 11:33 ` Wen Yang 2019-04-23 17:48 ` Heiko Stuebner 2019-04-23 17:48 ` Heiko Stuebner 2019-03-05 11:33 ` [PATCH v2 08/15] ARM: shmobile: " Wen Yang 2019-03-05 11:33 ` Wen Yang 2019-03-08 12:07 ` Simon Horman 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 ` Wen Yang 2019-03-05 11:34 ` [PATCH v2 10/15] ARM: sunxi: " Wen Yang 2019-03-05 11:34 ` Wen Yang 2019-03-05 11:59 ` maxime.ripard 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 ` Wen Yang 2019-03-05 11:34 ` Wen Yang [this message] 2019-03-05 11:34 ` [PATCH v2 12/15] ARM: vexpress: " Wen Yang 2019-03-05 11:39 ` Sudeep Holla 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 ` Wen Yang 2019-03-05 11:34 ` [PATCH v2 14/15] arm64: cpu_ops: " Wen Yang 2019-03-05 11:34 ` Wen Yang 2019-04-01 15:37 ` Will Deacon 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 2019-04-03 12:44 ` Will Deacon 2019-03-05 11:34 ` [PATCH v2 15/15] ARM: axxia: fix a leaked reference by adding " Wen Yang 2019-03-05 11:34 ` Wen Yang 2019-03-05 11:40 ` [PATCH v2 01/15] ARM: actions: " Russell King - ARM Linux admin 2019-03-05 11:40 ` Russell King - ARM Linux admin 2019-03-09 2:17 ` Manivannan Sadhasivam 2019-03-09 2:17 ` Manivannan Sadhasivam 2019-03-09 8:14 ` Russell King - ARM Linux admin 2019-03-09 8:14 ` Russell King - ARM Linux admin
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