* [PATCH 5.0 210/346] cpufreq: imx6q: fix possible object reference leak
[not found] <20190530030540.363386121@linuxfoundation.org>
@ 2019-05-30 3:04 ` Greg Kroah-Hartman
2019-05-30 3:05 ` [PATCH 5.0 237/346] arm64: cpu_ops: fix a leaked reference by adding missing of_node_put Greg Kroah-Hartman
1 sibling, 0 replies; 2+ messages in thread
From: Greg Kroah-Hartman @ 2019-05-30 3:04 UTC (permalink / raw)
To: linux-kernel
Cc: Sasha Levin, Fabio Estevam, linux-pm, Greg Kroah-Hartman,
Sascha Hauer, Rafael J. Wysocki, stable, NXP Linux Team,
Pengutronix Kernel Team, Viresh Kumar, Shawn Guo, Wen Yang,
linux-arm-kernel
[ Upstream commit ddb64c5db3cc8fb9c1242214d5798b2c2865681c ]
The call to of_node_get returns a node pointer with refcount
incremented thus it must be explicitly decremented after the last
usage.
Detected by coccinelle with the following warnings:
./drivers/cpufreq/imx6q-cpufreq.c:391:4-10: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 348, but without a corresponding object release within this function.
./drivers/cpufreq/imx6q-cpufreq.c:395:3-9: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 348, but without a corresponding object release within this function.
Signed-off-by: Wen Yang <wen.yang99@zte.com.cn>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Pengutronix Kernel Team <kernel@pengutronix.de>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: NXP Linux Team <linux-imx@nxp.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/cpufreq/imx6q-cpufreq.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/cpufreq/imx6q-cpufreq.c b/drivers/cpufreq/imx6q-cpufreq.c
index 9fedf627e000d..3ee55aee5d71a 100644
--- a/drivers/cpufreq/imx6q-cpufreq.c
+++ b/drivers/cpufreq/imx6q-cpufreq.c
@@ -407,11 +407,11 @@ static int imx6q_cpufreq_probe(struct platform_device *pdev)
ret = imx6ul_opp_check_speed_grading(cpu_dev);
if (ret) {
if (ret == -EPROBE_DEFER)
- return ret;
+ goto put_node;
dev_err(cpu_dev, "failed to read ocotp: %d\n",
ret);
- return ret;
+ goto put_node;
}
} else {
imx6q_opp_check_speed_grading(cpu_dev);
--
2.20.1
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^ permalink raw reply related [flat|nested] 2+ messages in thread* [PATCH 5.0 237/346] arm64: cpu_ops: fix a leaked reference by adding missing of_node_put
[not found] <20190530030540.363386121@linuxfoundation.org>
2019-05-30 3:04 ` [PATCH 5.0 210/346] cpufreq: imx6q: fix possible object reference leak Greg Kroah-Hartman
@ 2019-05-30 3:05 ` Greg Kroah-Hartman
1 sibling, 0 replies; 2+ messages in thread
From: Greg Kroah-Hartman @ 2019-05-30 3:05 UTC (permalink / raw)
To: linux-kernel
Cc: Sasha Levin, Florian Fainelli, Greg Kroah-Hartman, Will Deacon,
stable, Catalin Marinas, Wen Yang, linux-arm-kernel
[ Upstream commit 92606ec9285fb84cd9b5943df23f07d741384bfc ]
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/arm64/kernel/cpu_ops.c:102:1-7: ERROR: missing of_node_put;
acquired a node pointer with refcount incremented on line 69, 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: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
arch/arm64/kernel/cpu_ops.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arm64/kernel/cpu_ops.c b/arch/arm64/kernel/cpu_ops.c
index ea001241bdd47..00f8b8612b69f 100644
--- a/arch/arm64/kernel/cpu_ops.c
+++ b/arch/arm64/kernel/cpu_ops.c
@@ -85,6 +85,7 @@ static const char *__init cpu_read_enable_method(int cpu)
pr_err("%pOF: missing enable-method property\n",
dn);
}
+ of_node_put(dn);
} else {
enable_method = acpi_get_enable_method(cpu);
if (!enable_method) {
--
2.20.1
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^ permalink raw reply related [flat|nested] 2+ messages in thread