vhost: Fix host panic if ioctl called with wrong index

Commit Message

Krishna Kumar May 25, 2010, 5:40 a.m. UTC

None

Patch

diff -ruNp org/drivers/vhost/vhost.c new/drivers/vhost/vhost.c
--- org/drivers/vhost/vhost.c	2010-05-24 09:25:57.000000000 +0530
+++ new/drivers/vhost/vhost.c	2010-05-24 09:26:53.000000000 +0530
@@ -374,7 +374,7 @@  static long vhost_set_vring(struct vhost
 	r = get_user(idx, idxp);
 	if (r < 0)
 		return r;
-	if (idx > d->nvqs)
+	if (idx >= d->nvqs)
 		return -ENOBUFS;
 
 	vq = d->vqs + idx;