On 2021/2/5 上午1:22, Stefano Garzarella wrote:
__vringh_iov() overwrites the contents of riov and wiov, in fact it resets the 'i' and 'used' fields, but also the 'consumed' field should be reset to avoid an inconsistent state. Signed-off-by: Stefano Garzarella <[email protected]> --- drivers/vhost/vringh.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
Acked-by: Jason Wang <[email protected]>
diff --git a/drivers/vhost/vringh.c b/drivers/vhost/vringh.c index f68122705719..bee63d68201a 100644 --- a/drivers/vhost/vringh.c +++ b/drivers/vhost/vringh.c @@ -290,9 +290,9 @@ __vringh_iov(struct vringh *vrh, u16 i, return -EINVAL;if (riov)- riov->i = riov->used = 0; + riov->i = riov->used = riov->consumed = 0; if (wiov) - wiov->i = wiov->used = 0; + wiov->i = wiov->used = wiov->consumed = 0;for (;;) {void *addr;
