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* [PATCH] libnvdimm/of_pmem: Fix leaking bus_desc.provider_name in some paths
@ 2020-01-23  3:18 ` Vaibhav Jain
  0 siblings, 0 replies; 8+ messages in thread
From: Vaibhav Jain @ 2020-01-23  3:18 UTC (permalink / raw)
  To: linuxppc-dev, linux-nvdimm; +Cc: Vaibhav Jain, Aneesh Kumar K . V, stable

String 'bus_desc.provider_name' allocated inside
of_pmem_region_probe() will leak in case call to nvdimm_bus_register()
fails or when of_pmem_region_remove() is called.

This minor patch ensures that 'bus_desc.provider_name' is freed in
error path for of_pmem_region_probe() as well as in
of_pmem_region_remove().

Cc: stable@vger.kernel.org
Fixes:49bddc73d15c2("libnvdimm/of_pmem: Provide a unique name for bus provider")
Signed-off-by: Vaibhav Jain <vaibhav@linux.ibm.com>
---
 drivers/nvdimm/of_pmem.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/nvdimm/of_pmem.c b/drivers/nvdimm/of_pmem.c
index 8224d1431ea9..9cb76f9837ad 100644
--- a/drivers/nvdimm/of_pmem.c
+++ b/drivers/nvdimm/of_pmem.c
@@ -36,6 +36,7 @@ static int of_pmem_region_probe(struct platform_device *pdev)
 
 	priv->bus = bus = nvdimm_bus_register(&pdev->dev, &priv->bus_desc);
 	if (!bus) {
+		kfree(priv->bus_desc.provider_name);
 		kfree(priv);
 		return -ENODEV;
 	}
@@ -81,6 +82,7 @@ static int of_pmem_region_remove(struct platform_device *pdev)
 	struct of_pmem_private *priv = platform_get_drvdata(pdev);
 
 	nvdimm_bus_unregister(priv->bus);
+	kfree(priv->bus_desc.provider_name);
 	kfree(priv);
 
 	return 0;
-- 
2.24.1
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^ permalink raw reply related	[flat|nested] 8+ messages in thread

end of thread, other threads:[~2020-02-18 21:07 UTC | newest]

Thread overview: 8+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2020-01-23  3:18 [PATCH] libnvdimm/of_pmem: Fix leaking bus_desc.provider_name in some paths Vaibhav Jain
2020-01-23  3:18 ` Vaibhav Jain
2020-01-23  3:18 ` Vaibhav Jain
2020-02-04 15:29 ` Aneesh Kumar K.V
2020-02-04 15:29   ` Aneesh Kumar K.V
2020-02-18 21:03 ` Jeff Moyer
2020-02-18 21:03   ` Jeff Moyer
2020-02-18 21:03   ` Jeff Moyer

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