From: Vasiliy Kulikov <segoon@openwall.com>
Date: Wed, 19 Jan 2011 12:57:22 +0000 (+0300)
Subject: OMAP: PM: SmartReflex: fix potential NULL dereference
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=5c56f32e80ac8ea9878a0a5eb9ca99c703e953ab;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git

OMAP: PM: SmartReflex: fix potential NULL dereference

kzalloc() may fail, if so return -ENOMEM.  Also Walter Harms suggested
to use kasprintf() instead of kzalloc+strcpy+strcat.

Signed-off-by: Vasiliy Kulikov <segoon@openwall.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
---

diff --git a/arch/arm/mach-omap2/smartreflex.c b/arch/arm/mach-omap2/smartreflex.c
index 1a777e34d0c2..b57ae502e0c7 100644
--- a/arch/arm/mach-omap2/smartreflex.c
+++ b/arch/arm/mach-omap2/smartreflex.c
@@ -260,9 +260,11 @@ static int sr_late_init(struct omap_sr *sr_info)
 	if (sr_class->class_type == SR_CLASS2 &&
 		sr_class->notify_flags && sr_info->irq) {
 
-		name = kzalloc(SMARTREFLEX_NAME_LEN + 1, GFP_KERNEL);
-		strcpy(name, "sr_");
-		strcat(name, sr_info->voltdm->name);
+		name = kasprintf(GFP_KERNEL, "sr_%s", sr_info->voltdm->name);
+		if (name == NULL) {
+			ret = -ENOMEM;
+			goto error;
+		}
 		ret = request_irq(sr_info->irq, sr_interrupt,
 				0, name, (void *)sr_info);
 		if (ret)