linux-kernel - [PATCH 1/2] staging: gdm72xx: fix memory leak

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Message-Id: <1441629502-16493-1-git-send-email-sudipm.mukherjee@gmail.com>
Date:	Mon,  7 Sep 2015 18:08:21 +0530
From:	Sudip Mukherjee <sudipm.mukherjee@...il.com>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:	linux-kernel@...r.kernel.org, devel@...verdev.osuosl.org,
	Sudip Mukherjee <sudipm.mukherjee@...il.com>
Subject: [PATCH 1/2] staging: gdm72xx: fix memory leak

We were successfully requesting the firmware but on error it was not
being released.

Signed-off-by: Sudip Mukherjee <sudip@...torindia.org>
---
 drivers/staging/gdm72xx/usb_boot.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/gdm72xx/usb_boot.c b/drivers/staging/gdm72xx/usb_boot.c
index 3ccc447..50fbec3 100644
--- a/drivers/staging/gdm72xx/usb_boot.c
+++ b/drivers/staging/gdm72xx/usb_boot.c
@@ -159,8 +159,10 @@ int usb_boot(struct usb_device *usbdev, u16 pid)
 	}
 
 	tx_buf = kmalloc(DOWNLOAD_SIZE, GFP_KERNEL);
-	if (tx_buf == NULL)
+	if (tx_buf == NULL) {
+		release_firmware(firm);
 		return -ENOMEM;
+	}
 
 	if (firm->size < sizeof(hdr)) {
 		dev_err(&usbdev->dev, "Cannot read the image info.\n");
@@ -285,8 +287,10 @@ static int em_download_image(struct usb_device *usbdev, const char *img_name,
 	}
 
 	buf = kmalloc(DOWNLOAD_CHUCK + pad_size, GFP_KERNEL);
-	if (buf == NULL)
+	if (buf == NULL) {
+		release_firmware(firm);
 		return -ENOMEM;
+	}
 
 	strcpy(buf+pad_size, type_string);
 	ret = gdm_wibro_send(usbdev, buf, strlen(type_string)+pad_size);
-- 
1.9.1

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