From: Jesper Juhl <jesper.juhl@gmail.com>
Date: Thu, 28 Sep 2006 21:56:01 +0000 (+0200)
Subject: Driver core: Don't leak 'old_class_name' in drivers/base/core.c::device_rename()
X-Git-Tag: MMI-PSA29.97-13-9~45515^2~47^2~93^2~3
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=952ab431cd36c7ab573f685af8679c3677cbdc29;p=GitHub%2FMotorolaMobilityLLC%2Fkernel-slsi.git

Driver core: Don't leak 'old_class_name' in drivers/base/core.c::device_rename()

If kmalloc() fails to allocate space for 'old_symlink_name' in
drivers/base/core.c::device_rename(), then we'll leak 'old_class_name'.

Spotted by the Coverity checker.


Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/drivers/base/core.c b/drivers/base/core.c
index 365f709715ef..41f3dca55cd0 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -809,8 +809,10 @@ int device_rename(struct device *dev, char *new_name)
 
 	if (dev->class) {
 		old_symlink_name = kmalloc(BUS_ID_SIZE, GFP_KERNEL);
-		if (!old_symlink_name)
-			return -ENOMEM;
+		if (!old_symlink_name) {
+			error = -ENOMEM;
+			goto out_free_old_class;
+		}
 		strlcpy(old_symlink_name, dev->bus_id, BUS_ID_SIZE);
 	}
 
@@ -834,9 +836,10 @@ int device_rename(struct device *dev, char *new_name)
 	}
 	put_device(dev);
 
-	kfree(old_class_name);
 	kfree(new_class_name);
 	kfree(old_symlink_name);
+ out_free_old_class:
+	kfree(old_class_name);
 
 	return error;
 }