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 <xieyon...@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 <jasow...@redhat.com> _______________________________________________ Virtualization mailing list Virtualization@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/virtualization
