linux-kernel - [PATCH v3 1/2] ACPI: processor: idle: Fix memory leak when register cpuidle device failed

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Message-ID: <20250728070612.1260859-2-lihuisong@huawei.com>
Date: Mon, 28 Jul 2025 15:06:11 +0800
From: Huisong Li <lihuisong@...wei.com>
To: <rafael@...nel.org>, <lenb@...nel.org>
CC: <linux-acpi@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<linuxarm@...wei.com>, <jonathan.cameron@...wei.com>,
	<zhanjie9@...ilicon.com>, <zhenglifeng1@...wei.com>, <yubowen8@...wei.com>,
	<liuyonglong@...wei.com>, <lihuisong@...wei.com>
Subject: [PATCH v3 1/2] ACPI: processor: idle: Fix memory leak when register cpuidle device failed

The cpuidle device's memory has been leaked when register cpuidle
device failed in acpi_processor_power_init().

Fixes: 3d339dcbb56d ("cpuidle / ACPI : move cpuidle_device field out of the acpi_processor_power structure")
Signed-off-by: Huisong Li <lihuisong@...wei.com>
---
 drivers/acpi/processor_idle.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index 2c2dc559e0f8..031738390f2d 100644
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -1405,6 +1405,8 @@ int acpi_processor_power_init(struct acpi_processor *pr)
 		if (retval) {
 			if (acpi_processor_registered == 0)
 				cpuidle_unregister_driver(&acpi_idle_driver);
+			kfree(dev);
+			per_cpu(acpi_cpuidle_device, pr->id) = NULL;
 			return retval;
 		}
 		acpi_processor_registered++;
-- 
2.33.0