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From: Miaoqian Lin <linmq006@gmail.com>
To: Hector Martin <marcan@marcan.st>, Sven Peter <sven@svenpeter.dev>,
	Alyssa Rosenzweig <alyssa@rosenzweig.io>,
	Thomas Gleixner <tglx@linutronix.de>,
	Marc Zyngier <maz@kernel.org>,
	Linus Walleij <linus.walleij@linaro.org>,
	Birger Koblitz <mail@birger-koblitz.de>,
	John Crispin <john@phrozen.org>, Bert Vermeulen <bert@biot.com>,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Cc: Miaoqian Lin <linmq006@gmail.com>
Subject: [PATCH 5/6] irqchip/gic-v3: Fix refcount leak in gic_populate_ppi_partitions
Date: Wed,  1 Jun 2022 12:09:29 +0400	[thread overview]
Message-ID: <20220601080930.31005-6-linmq006@gmail.com> (raw)
In-Reply-To: <20220601080930.31005-1-linmq006@gmail.com>

of_find_node_by_phandle() returns a node pointer with refcount
incremented, we should use of_node_put() on it when not need anymore.
Add missing of_node_put() to avoid refcount leak.

Fixes: e3825ba1af3a ("irqchip/gic-v3: Add support for partitioned PPIs")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
---
 drivers/irqchip/irq-gic-v3.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/irqchip/irq-gic-v3.c b/drivers/irqchip/irq-gic-v3.c
index 1d5b4755a27e..5c1cf907ee68 100644
--- a/drivers/irqchip/irq-gic-v3.c
+++ b/drivers/irqchip/irq-gic-v3.c
@@ -1973,12 +1973,15 @@ static void __init gic_populate_ppi_partitions(struct device_node *gic_node)
 				continue;
 
 			cpu = of_cpu_node_to_id(cpu_node);
-			if (WARN_ON(cpu < 0))
+			if (WARN_ON(cpu < 0)) {
+				of_node_put(cpu_node);
 				continue;
+			}
 
 			pr_cont("%pOF[%d] ", cpu_node, cpu);
 
 			cpumask_set_cpu(cpu, &part->mask);
+			of_node_put(cpu_node);
 		}
 
 		pr_cont("}\n");
-- 
2.25.1


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  parent reply	other threads:[~2022-06-01  8:13 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-06-01  8:09 [PATCH 0/6] irqchip: Fix some refcount leaks Miaoqian Lin
2022-06-01  8:09 ` [PATCH 1/6] irqchip/gic/realview: Fix refcount leak in realview_gic_of_init Miaoqian Lin
2022-06-01  8:09 ` [PATCH 2/6] irqchip/apple-aic: Fix refcount leak in build_fiq_affinity Miaoqian Lin
2022-06-01  8:09 ` [PATCH 3/6] irqchip/apple-aic: Fix refcount leak in aic_of_ic_init Miaoqian Lin
2022-06-01  8:09 ` [PATCH 4/6] irqchip/gic-v3: Fix error handling in gic_populate_ppi_partitions Miaoqian Lin
2022-06-01  8:09 ` Miaoqian Lin [this message]
2022-06-01  8:09 ` [PATCH 6/6] irqchip/realtek-rtl: Fix refcount leak in map_interrupts Miaoqian Lin

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