From: Insu Yun <wuninsu@gmail.com>
Date: Thu, 15 Oct 2015 16:19:30 +0000 (-0400)
Subject: ACPI / sysfs: correctly check failing memory allocation
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=bc1e49df345cf9be38ba29ead45a12f86ceb5fe2;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

ACPI / sysfs: correctly check failing memory allocation

Since kobject_create_and_add() can fail under memory pressure,
its return value needs to be checked against NULL before passing
it to sysfs_create_file().

Signed-off-by: Insu Yun <wuninsu@gmail.com>
[ rjw: Subject & changelog ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---

diff --git a/drivers/acpi/sysfs.c b/drivers/acpi/sysfs.c
index 40a42655227c..0243d375c6fd 100644
--- a/drivers/acpi/sysfs.c
+++ b/drivers/acpi/sysfs.c
@@ -878,6 +878,9 @@ int __init acpi_sysfs_init(void)
 		return result;
 
 	hotplug_kobj = kobject_create_and_add("hotplug", acpi_kobj);
+	if (!hotplug_kobj)
+		return -ENOMEM;
+
 	result = sysfs_create_file(hotplug_kobj, &force_remove_attr.attr);
 	if (result)
 		return result;