linux-kernel - Re: [PATCH] vhost: vringh: Fix copy_to

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Message-ID: <CACGkMEtU9YSuJhuHCk=RZ2wyPbb+zYp05jdGp1rtpJx8iRDpXg@mail.gmail.com>
Date: Wed, 24 Sep 2025 08:54:09 +0800
From: Jason Wang <jasowang@...hat.com>
To: "Michael S. Tsirkin" <mst@...hat.com>
Cc: linux-kernel@...r.kernel.org, zhang jiao <zhangjiao2@...s.chinamobile.com>, 
	Eugenio Pérez <eperezma@...hat.com>, kvm@...r.kernel.org, 
	virtualization@...ts.linux.dev, netdev@...r.kernel.org
Subject: Re: [PATCH] vhost: vringh: Fix copy_to_iter return value check

On Wed, Sep 24, 2025 at 5:48 AM Michael S. Tsirkin <mst@...hat.com> wrote:
>
> The return value of copy_to_iter can't be negative, check whether the
> copied length is equal to the requested length instead of checking for
> negative values.
>
> Cc: zhang jiao <zhangjiao2@...s.chinamobile.com>
> Link: https://lore.kernel.org/all/20250910091739.2999-1-zhangjiao2@cmss.chinamobile.com
> Signed-off-by: Michael S. Tsirkin <mst@...hat.com>
> ---
>
>

Acked-by: Jason Wang <jasowang@...hat.com>

Thanks