Messages in this thread Patch in this message | | | From | Neeraj Upadhyay <> | Subject | [PATCH] vringh: Use wiov->used to check for read/write desc order | Date | Tue, 22 Jun 2021 17:07:53 +0530 |
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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
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