soc: qcom: Add check devm_kasprintf() returned value

JIRA: https://issues.redhat.com/browse/RHEL-85597

commit e694d2b
Author: Charles Han <hanchunchao@inspur.com>
Date:   Sun Sep 29 15:23:49 2024 +0800

    soc: qcom: Add check devm_kasprintf() returned value

    devm_kasprintf() can return a NULL pointer on failure but this
    returned value in qcom_socinfo_probe() is not checked.

    Signed-off-by: Charles Han <hanchunchao@inspur.com>
    Link: https://lore.kernel.org/r/20240929072349.202520-1-hanchunchao@inspur.com
    Signed-off-by: Bjorn Andersson <andersson@kernel.org>

Signed-off-by: Jared Kangas <jkangas@redhat.com>

Author: rh-jkangas

drivers/soc/qcom/socinfo.c

@@ -614,10 +614,16 @@ static int qcom_socinfo_probe(struct platform_device *pdev)
 	qs->attr.revision = devm_kasprintf(&pdev->dev, GFP_KERNEL, "%u.%u",
 					   SOCINFO_MAJOR(le32_to_cpu(info->ver)),
 					   SOCINFO_MINOR(le32_to_cpu(info->ver)));
-	if (offsetof(struct socinfo, serial_num) <= item_size)
+	if (!qs->attr.soc_id || qs->attr.revision)
+		return -ENOMEM;
+
+	if (offsetof(struct socinfo, serial_num) <= item_size) {
 		qs->attr.serial_number = devm_kasprintf(&pdev->dev, GFP_KERNEL,
 							"%u",
 							le32_to_cpu(info->serial_num));
+		if (!qs->attr.serial_number)
+			return -ENOMEM;
+	}
 
 	qs->soc_dev = soc_device_register(&qs->attr);
 	if (IS_ERR(qs->soc_dev))