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don't access memory outside the array bounds.

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This commit is contained in:
christos 2012-07-20 02:23:35 +00:00
parent 09fca0b71e
commit a29c93ee4f
1 changed files with 5 additions and 6 deletions
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11
sys/dev/usb/usb.c
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@ -1,4 +1,4 @@
/* $NetBSD: usb.c,v 1.132 2012/07/17 10:33:46 cegger Exp $ */
/* $NetBSD: usb.c,v 1.133 2012/07/20 02:23:35 christos Exp $ */
/*
* Copyright (c) 1998, 2002, 2008, 2012 The NetBSD Foundation, Inc.
@ -37,7 +37,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: usb.c,v 1.132 2012/07/17 10:33:46 cegger Exp $");
__KERNEL_RCSID(0, "$NetBSD: usb.c,v 1.133 2012/07/20 02:23:35 christos Exp $");
#include "opt_compat_netbsd.h"
#include "opt_usb.h"
@ -362,15 +362,14 @@ usb_add_task(usbd_device_handle dev, struct usb_task *task, int queue)
void
usb_rem_task(usbd_device_handle dev, struct usb_task *task)
{
struct usb_taskq *taskq;
taskq = &usb_taskq[task->queue];
mutex_enter(&taskq->lock);
if (task->queue != -1) {
struct usb_taskq *taskq = &usb_taskq[task->queue];
mutex_enter(&taskq->lock);
TAILQ_REMOVE(&taskq->tasks, task, next);
task->queue = -1;
mutex_exit(&taskq->lock);
}
mutex_exit(&taskq->lock);
}
void