From: Jason Wang <jasowang@redhat.com>
To: Xie Yongji <xieyongji@bytedance.com>,
mst@redhat.com, stefanha@redhat.com, sgarzare@redhat.com,
parav@nvidia.com, hch@infradead.org,
christian.brauner@canonical.com, rdunlap@infradead.org,
willy@infradead.org, viro@zeniv.linux.org.uk, axboe@kernel.dk,
bcrl@kvack.org, corbet@lwn.net, mika.penttila@nextfour.com,
dan.carpenter@oracle.com, joro@8bytes.org
Cc: virtualization@lists.linux-foundation.org,
netdev@vger.kernel.org, kvm@vger.kernel.org,
linux-fsdevel@vger.kernel.org, iommu@lists.linux-foundation.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v7 05/12] virtio_scsi: Add validation for residual bytes from response
Date: Wed, 26 May 2021 10:41:36 +0800 [thread overview]
Message-ID: <94abb1de-921d-8bf2-4cfc-55c7fc86c5a0@redhat.com> (raw)
In-Reply-To: <20210517095513.850-6-xieyongji@bytedance.com>
在 2021/5/17 下午5:55, Xie Yongji 写道:
> This ensures that the residual bytes in response (might come
> from an untrusted device) will not exceed the data buffer length.
>
> Signed-off-by: Xie Yongji <xieyongji@bytedance.com>
> ---
> drivers/scsi/virtio_scsi.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/scsi/virtio_scsi.c b/drivers/scsi/virtio_scsi.c
> index efcaf0674c8d..ad7d8cecec32 100644
> --- a/drivers/scsi/virtio_scsi.c
> +++ b/drivers/scsi/virtio_scsi.c
> @@ -97,7 +97,7 @@ static inline struct Scsi_Host *virtio_scsi_host(struct virtio_device *vdev)
> static void virtscsi_compute_resid(struct scsi_cmnd *sc, u32 resid)
> {
> if (resid)
> - scsi_set_resid(sc, resid);
> + scsi_set_resid(sc, min(resid, scsi_bufflen(sc)));
> }
>
> /*
Acked-by: Jason Wang <jasowang@redhat.com>
next prev parent reply other threads:[~2021-05-26 2:41 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-17 9:55 [PATCH v7 00/12] Introduce VDUSE - vDPA Device in Userspace Xie Yongji
2021-05-17 9:55 ` [PATCH v7 01/12] iova: Export alloc_iova_fast() Xie Yongji
2021-05-26 2:36 ` Jason Wang
2021-05-26 2:43 ` Yongji Xie
2021-05-17 9:55 ` [PATCH v7 02/12] file: Export receive_fd() to modules Xie Yongji
2021-05-20 6:18 ` Al Viro
2021-05-20 6:32 ` Yongji Xie
2021-05-17 9:55 ` [PATCH v7 03/12] eventfd: Increase the recursion depth of eventfd_signal() Xie Yongji
2021-05-17 9:55 ` [PATCH v7 04/12] virtio-blk: Add validation for block size in config space Xie Yongji
2021-05-19 13:39 ` Yongji Xie
2021-05-19 14:42 ` Dan Carpenter
2021-05-20 5:25 ` Yongji Xie
2021-05-20 5:43 ` Michael S. Tsirkin
2021-05-20 7:08 ` Yongji Xie
2021-05-17 9:55 ` [PATCH v7 05/12] virtio_scsi: Add validation for residual bytes from response Xie Yongji
2021-05-26 2:41 ` Jason Wang [this message]
2021-05-17 9:55 ` [PATCH v7 06/12] vhost-iotlb: Add an opaque pointer for vhost IOTLB Xie Yongji
2021-05-17 9:55 ` [PATCH v7 07/12] vdpa: Add an opaque pointer for vdpa_config_ops.dma_map() Xie Yongji
2021-05-17 9:55 ` [PATCH v7 08/12] vdpa: factor out vhost_vdpa_pa_map() and vhost_vdpa_pa_unmap() Xie Yongji
2021-05-17 9:55 ` [PATCH v7 09/12] vdpa: Support transferring virtual addressing during DMA mapping Xie Yongji
2021-05-17 9:55 ` [PATCH v7 10/12] vduse: Implement an MMU-based IOMMU driver Xie Yongji
2021-05-17 9:55 ` [PATCH v7 11/12] vduse: Introduce VDUSE - vDPA Device in Userspace Xie Yongji
2021-05-20 6:28 ` Al Viro
2021-05-20 7:03 ` Yongji Xie
2021-05-27 4:12 ` Jason Wang
2021-05-27 4:57 ` Yongji Xie
2021-05-27 5:00 ` Jason Wang
2021-05-27 5:08 ` Yongji Xie
2021-05-27 5:40 ` Jason Wang
2021-05-27 7:34 ` Yongji Xie
2021-05-27 8:41 ` Jason Wang
2021-05-27 8:43 ` Jason Wang
2021-05-27 10:14 ` Yongji Xie
2021-05-28 1:33 ` Jason Wang
2021-05-28 3:54 ` Yongji Xie
2021-05-28 6:38 ` Jason Wang
2021-05-27 13:17 ` Yongji Xie
2021-05-28 2:31 ` Jason Wang
2021-05-31 4:27 ` Yongji Xie
2021-05-31 4:38 ` Jason Wang
2021-05-31 6:24 ` Yongji Xie
2021-05-31 4:56 ` Greg KH
2021-05-31 6:19 ` Yongji Xie
2021-05-31 6:32 ` Greg KH
2021-05-31 7:13 ` Yongji Xie
2021-05-17 9:55 ` [PATCH v7 12/12] Documentation: Add documentation for VDUSE Xie Yongji
2021-05-20 6:06 ` [PATCH v7 00/12] Introduce VDUSE - vDPA Device in Userspace Michael S. Tsirkin
2021-05-20 9:06 ` Yongji Xie
2021-05-25 6:40 ` Jason Wang
2021-05-25 6:48 ` Michael S. Tsirkin
2021-05-25 7:11 ` Jason Wang
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