Messages in this thread | | | Subject | Re: [PATCH] vringh: Use wiov->used to check for read/write desc order | From | Jason Wang <> | Date | Wed, 23 Jun 2021 11:21:19 +0800 |
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在 2021/6/22 下午7:37, Neeraj Upadhyay 写道: > As iov->used is incremented when descriptors are processed > in __vringh_iov(), use it to check for incorrect read > and write descriptor order. > > Signed-off-by: Neeraj Upadhyay <neeraju@codeaurora.org>
Acked-by: Jason Wang <jasowang@redhat.com>
> --- > drivers/vhost/vringh.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/vhost/vringh.c b/drivers/vhost/vringh.c > index 4af8fa2..14e2043 100644 > --- a/drivers/vhost/vringh.c > +++ b/drivers/vhost/vringh.c > @@ -359,7 +359,7 @@ __vringh_iov(struct vringh *vrh, u16 i, > iov = wiov; > else { > iov = riov; > - if (unlikely(wiov && wiov->i)) { > + if (unlikely(wiov && wiov->used)) { > vringh_bad("Readable desc %p after writable", > &descs[i]); > err = -EINVAL;
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