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authorAlexey Khoroshilov <khoroshilov@ispras.ru>2013-06-10 23:29:16 +0400
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-06-11 17:13:37 -0700
commit773fe724ab7ca9c32e2411eb2d85ea455e82714e (patch)
tree56fa1074d719a118bdb04159525563db78b02dfb
parent5f43264c5320624f3b458c5794f37220c4fc2934 (diff)
staging: ft1000: fix memory leak on error path in ft1000_probe()
ft1000dev->tx_urb and ft1000dev->rx_urb are not deallocated if something goes wrong in ft1000_probe(). Also there is no check for success of urb allocation. The patch fixes the both issues. By the way, there is no sense in GFP_ATOMIC for urb allocation here, so it is changed to GFP_KERNEL. Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--drivers/staging/ft1000/ft1000-usb/ft1000_usb.c10
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/staging/ft1000/ft1000-usb/ft1000_usb.c b/drivers/staging/ft1000/ft1000-usb/ft1000_usb.c
index 614db55..29a7cd2 100644
--- a/drivers/staging/ft1000/ft1000-usb/ft1000_usb.c
+++ b/drivers/staging/ft1000/ft1000-usb/ft1000_usb.c
@@ -79,8 +79,12 @@ static int ft1000_probe(struct usb_interface *interface,
ft1000dev->dev = dev;
ft1000dev->status = 0;
ft1000dev->net = NULL;
- ft1000dev->tx_urb = usb_alloc_urb(0, GFP_ATOMIC);
- ft1000dev->rx_urb = usb_alloc_urb(0, GFP_ATOMIC);
+ ft1000dev->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
+ ft1000dev->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
+ if (!ft1000dev->tx_urb || !ft1000dev->rx_urb) {
+ ret = -ENOMEM;
+ goto err_fw;
+ }
DEBUG("ft1000_probe is called\n");
numaltsetting = interface->num_altsetting;
@@ -209,6 +213,8 @@ err_thread:
err_load:
kfree(pFileStart);
err_fw:
+ usb_free_urb(ft1000dev->rx_urb);
+ usb_free_urb(ft1000dev->tx_urb);
kfree(ft1000dev);
return ret;
}