Re: [PATCH v3] drm/i915/gvt: fix double free bug in split_2MB_gtt_entry

[Zheng Hacker]

Dave Airlie <airlied@xxxxxxxxx> 于2022年10月27日周四 08:01写道：
>
> On Fri, 7 Oct 2022 at 11:38, Zheng Wang <zyytlz.wz@xxxxxxx> wrote:
> >
> > If intel_gvt_dma_map_guest_page failed, it will call
> > ppgtt_invalidate_spt, which will finally free the spt.
> > But the caller does not notice that, it will free spt again in error path.
> >
> > Fix this by spliting invalidate and free in ppgtt_invalidate_spt.
> > Only free spt when in good case.
> >
> > Reported-by: Zheng Wang <hackerzheng666@xxxxxxxxx>
> > Signed-off-by: Zheng Wang <zyytlz.wz@xxxxxxx>
>
> Has this landed in a tree yet, since it's a possible CVE, might be
> good to merge it somewhere.
>
> Dave.
>

Hi Dave,

This patched hasn't been merged yet. Could you please help with this?

Best Regards,
Zheng Wang