linux-kernel - [PATCH] cpufreq: qcom-hw: Fix memory leak in qcom_cpufreq_hw_read

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Date:   Tue, 8 Nov 2022 15:23:02 +0800
From:   Chen Hui <judy.chenhui@...wei.com>
To:     <agross@...nel.org>, <andersson@...nel.org>,
        <konrad.dybcio@...ainline.org>, <rafael@...nel.org>,
        <viresh.kumar@...aro.org>, <sibis@...eaurora.org>,
        <mka@...omium.org>
CC:     <linux-arm-msm@...r.kernel.org>, <linux-pm@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, Chen Hui <judy.chenhui@...wei.com>
Subject: [PATCH] cpufreq: qcom-hw: Fix memory leak in qcom_cpufreq_hw_read_lut()

If "cpu_dev" fails to get opp table in qcom_cpufreq_hw_read_lut(),
the program will return, resulting in "table" resource is not released.

Fixes: 51c843cf77bb ("cpufreq: qcom: Update the bandwidth levels on frequency change")
Signed-off-by: Chen Hui <judy.chenhui@...wei.com>
---
 drivers/cpufreq/qcom-cpufreq-hw.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/cpufreq/qcom-cpufreq-hw.c b/drivers/cpufreq/qcom-cpufreq-hw.c
index 833589bc95e4..d15097549e8c 100644
--- a/drivers/cpufreq/qcom-cpufreq-hw.c
+++ b/drivers/cpufreq/qcom-cpufreq-hw.c
@@ -193,6 +193,7 @@ static int qcom_cpufreq_hw_read_lut(struct device *cpu_dev,
 		}
 	} else if (ret != -ENODEV) {
 		dev_err(cpu_dev, "Invalid opp table in device tree\n");
+		kfree(table);
 		return ret;
 	} else {
 		policy->fast_switch_possible = true;
-- 
2.17.1