From: Neeraj Upadhyay <neeraju@codeaurora.org>
To: mst@redhat.com, jasowang@redhat.com
Cc: virtualization@lists.linux-foundation.org,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
Neeraj Upadhyay <neeraju@codeaurora.org>
Subject: [PATCH] vringh: Use wiov->used to check for read/write desc order
Date: Tue, 22 Jun 2021 17:07:53 +0530 [thread overview]
Message-ID: <1624361873-6097-1-git-send-email-neeraju@codeaurora.org> (raw)
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>
---
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;
--
QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
hosted by The Linux Foundation
next reply other threads:[~2021-06-22 11:39 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-22 11:37 Neeraj Upadhyay [this message]
2021-06-23 3:21 ` [PATCH] vringh: Use wiov->used to check for read/write desc order Jason Wang
2021-06-23 16:10 ` Stefano Garzarella
2021-06-23 20:09 ` Michael S. Tsirkin
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