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Commit e22a3b34 authored by Insu Yun's avatar Insu Yun Committed by Mauro Carvalho Chehab
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[media] usbtv: correctly handling failed allocation 



Since kzalloc can be failed,
if not properly handled, NULL dereference could be happened.

Signed-off-by: default avatarInsu Yun <wuninsu@gmail.com>
Signed-off-by: default avatarHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@osg.samsung.com>
parent f8433226

drivers/media/usb/usbtv/usbtv-video.c

+4 −0
Original line number Diff line number Diff line
@@ -393,6 +393,10 @@ static struct urb *usbtv_setup_iso_transfer(struct usbtv *usbtv) 
	ip->transfer_flags = URB_ISO_ASAP;

	ip->transfer_buffer = kzalloc(size * USBTV_ISOC_PACKETS,

						GFP_KERNEL);

	if (!ip->transfer_buffer) {

		usb_free_urb(ip);

		return NULL;

	}

	ip->complete = usbtv_iso_cb;

	ip->number_of_packets = USBTV_ISOC_PACKETS;

	ip->transfer_buffer_length = size * USBTV_ISOC_PACKETS;