linux-kernel - [PATCH] PCI: imx: fix device node reference leak in imx_pcie

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20250903135150.2527259-1-linmq006@gmail.com>
Date: Wed,  3 Sep 2025 21:51:50 +0800
From: Miaoqian Lin <linmq006@...il.com>
To: Richard Zhu <hongxing.zhu@....com>,
	Lucas Stach <l.stach@...gutronix.de>,
	Lorenzo Pieralisi <lpieralisi@...nel.org>,
	Krzysztof Wilczyński <kwilczynski@...nel.org>,
	Manivannan Sadhasivam <mani@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Shawn Guo <shawnguo@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>,
	Trent Piepho <tpiepho@...inj.com>,
	linux-pci@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	imx@...ts.linux.dev,
	linux-kernel@...r.kernel.org
Cc: linmq006@...il.com,
	stable@...r.kernel.org
Subject: [PATCH] PCI: imx: fix device node reference leak in imx_pcie_probe

As the doc of of_parse_phandle() states:
"The device_node pointer with refcount incremented.  Use
 * of_node_put() on it when done."
Add missing of_node_put() after of_parse_phandle() call to properly
release the device node reference.

Found via static analysis.

Fixes: 1df82ec46600 ("PCI: imx: Add workaround for e10728, IMX7d PCIe PLL failure")
Cc: stable@...r.kernel.org
Signed-off-by: Miaoqian Lin <linmq006@...il.com>
---
 drivers/pci/controller/dwc/pci-imx6.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c
index 80e48746bbaf..618bc4b08a8b 100644
--- a/drivers/pci/controller/dwc/pci-imx6.c
+++ b/drivers/pci/controller/dwc/pci-imx6.c
@@ -1636,6 +1636,7 @@ static int imx_pcie_probe(struct platform_device *pdev)
 		struct resource res;
 
 		ret = of_address_to_resource(np, 0, &res);
+		of_node_put(np);
 		if (ret) {
 			dev_err(dev, "Unable to map PCIe PHY\n");
 			return ret;
-- 
2.35.1