If intel_gvt_dma_map_guest_page failed, it will call
ppgtt_invalidate_spt, which will finally free the spt. But the
caller function ppgtt_populate_spt_by_guest_entry does not notice
that, it will free spt again in its error path.
Fix this by undoing the mapping of DMA address and freeing sub_sp
Zhenyu Wang 于2022年12月21日周三 11:01写道：
>
> On 2022.12.20 17:40:14 +0800, Zheng Wang wrote:
> > If intel_gvt_dma_map_guest_page failed, it will call
> > ppgtt_invalidate_spt, which will finally free the spt. But the
> > caller function ppgtt_populate_spt_by_guest_entry does not notice
> > that, it
On 2022.12.20 17:40:14 +0800, Zheng Wang wrote:
> If intel_gvt_dma_map_guest_page failed, it will call
> ppgtt_invalidate_spt, which will finally free the spt. But the
> caller function ppgtt_populate_spt_by_guest_entry does not notice
> that, it will free spt again in its error path.
indent
>
