(+ Tvrtko as FYI) Zhenyu, can you take a look at the patch ASAP. Regards, Joonas Quoting Dave Airlie (2022-10-27 08:12:31) > On Thu, 27 Oct 2022 at 13:26, Zheng Hacker <hackerzheng666@xxxxxxxxx> wrote: > > > > 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? > > I'll add some more people who can probably look at it. > > Dave.
