From: Mario Schuknecht <mario.schuknecht@dresearch-fe.de>
Date: Tue, 16 Dec 2014 07:58:57 +0000 (+0100)
Subject: usb: gadget: gadgetfs: Free memory allocated by memdup_user()
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=b44be2462dbe3e23f0aedff64de52a1e8e47a1cd;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

usb: gadget: gadgetfs: Free memory allocated by memdup_user()

Commit 3b74c73f8d6f053f422e85fce955b61fb181cfe7 switched over to memdup_user()
in ep_write() function and removed kfree (kbuf).
memdup_user() function allocates memory which is never freed.

Fixes: 3b74c73 (usb: gadget: inode: switch over to memdup_user())
Cc: <stable@vger.kernel.org> # v3.15+
Signed-off-by: Mario Schuknecht <mario.schuknecht@dresearch-fe.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
---

diff --git a/drivers/usb/gadget/legacy/inode.c b/drivers/usb/gadget/legacy/inode.c
index c744e4975d74..08048613eed6 100644
--- a/drivers/usb/gadget/legacy/inode.c
+++ b/drivers/usb/gadget/legacy/inode.c
@@ -449,6 +449,7 @@ ep_write (struct file *fd, const char __user *buf, size_t len, loff_t *ptr)
 		data->name, len, (int) value);
 free1:
 	mutex_unlock(&data->lock);
+	kfree (kbuf);
 	return value;
 }