Patch "libnvdimm/of_pmem: Use devm_kstrdup instead of kstrdup and check its return value" has been added to the 5.4-stable tree

[Sasha Levin <sashal@xxxxxxxxxx>]

This is a note to let you know that I've just added the patch titled

    libnvdimm/of_pmem: Use devm_kstrdup instead of kstrdup and check its return value

to the 5.4-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     libnvdimm-of_pmem-use-devm_kstrdup-instead-of-kstrdu.patch
and it can be found in the queue-5.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit af7c50e750cce6bcd6a5b6e5a9ffda7a554a3eeb
Author: Chen Ni <nichen@xxxxxxxxxxx>
Date:   Thu Sep 14 07:03:27 2023 +0000

    libnvdimm/of_pmem: Use devm_kstrdup instead of kstrdup and check its return value
    
    [ Upstream commit 6fd4ebfc4d61e3097b595ab2725d513e3bbd6739 ]
    
    Use devm_kstrdup() instead of kstrdup() and check its return value to
    avoid memory leak.
    
    Fixes: 49bddc73d15c ("libnvdimm/of_pmem: Provide a unique name for bus provider")
    Signed-off-by: Chen Ni <nichen@xxxxxxxxxxx>
    Reviewed-by: Ira Weiny <ira.weiny@xxxxxxxxx>
    Reviewed-by: Dave Jiang <dave.jiang@xxxxxxxxx>
    Signed-off-by: Ira Weiny <ira.weiny@xxxxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/drivers/nvdimm/of_pmem.c b/drivers/nvdimm/of_pmem.c
index 8224d1431ea94..9d6664fcceb87 100644
--- a/drivers/nvdimm/of_pmem.c
+++ b/drivers/nvdimm/of_pmem.c
@@ -30,7 +30,13 @@ static int of_pmem_region_probe(struct platform_device *pdev)
 	if (!priv)
 		return -ENOMEM;
 
-	priv->bus_desc.provider_name = kstrdup(pdev->name, GFP_KERNEL);
+	priv->bus_desc.provider_name = devm_kstrdup(&pdev->dev, pdev->name,
+							GFP_KERNEL);
+	if (!priv->bus_desc.provider_name) {
+		kfree(priv);
+		return -ENOMEM;
+	}
+
 	priv->bus_desc.module = THIS_MODULE;
 	priv->bus_desc.of_node = np;