From: Zheng Hacker <hackerzheng666@gmail.com>
To: Dave Airlie <airlied@gmail.com>
Cc: Zheng Wang <zyytlz.wz@163.com>,
gregkh@linuxfoundation.org, alex000young@gmail.com,
security@kernel.org, airlied@linux.ie,
intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org,
linux-kernel@vger.kernel.org, 1002992920@qq.com
Subject: Re: [PATCH v3] drm/i915/gvt: fix double free bug in split_2MB_gtt_entry
Date: Thu, 27 Oct 2022 11:26:41 +0800 [thread overview]
Message-ID: <CAJedcCwxioxr+4TBTdrEjAZh97J3oroSHSgax+bxSNRXCBvkRg@mail.gmail.com> (raw)
In-Reply-To: <CAPM=9ty0+ouf+rQWhM=9XSKFOA2zxKfa00MsNBvwrQGPQm2uPQ@mail.gmail.com>
Dave Airlie <airlied@gmail.com> 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@163.com> 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@gmail.com>
> > Signed-off-by: Zheng Wang <zyytlz.wz@163.com>
>
> 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
next prev parent reply other threads:[~2022-10-27 3:27 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <tencent_ED24158E83CB9885E8BDD173EB5896B51906@qq.com>
2022-09-19 9:30 ` [PATCH] drm/i915/gvt: fix double-free bug in split_2MB_gtt_entry Jani Nikula
2022-09-19 9:55 ` Zheng Hacker
2022-09-21 9:13 ` Zheng Hacker
2022-09-28 3:33 ` [PATCH] drm/i915/gvt: fix double free " Zheng Wang
2022-10-02 14:18 ` Greg KH
2022-10-03 4:36 ` Zheng Hacker
2022-10-06 16:58 ` [PATCH v2] " Zheng Wang
2022-10-06 19:23 ` Greg KH
2022-10-07 0:39 ` Zheng Hacker
2022-10-07 1:37 ` [PATCH v3] " Zheng Wang
2022-10-27 0:01 ` Dave Airlie
2022-10-27 3:26 ` Zheng Hacker [this message]
2022-10-27 5:12 ` Dave Airlie
2022-10-30 15:10 ` Zheng Hacker
2022-12-15 10:47 ` Joonas Lahtinen
2022-12-15 11:33 ` Wang, Zhi A
2022-12-15 13:26 ` Zheng Hacker
2022-12-19 7:57 ` [Intel-gfx] " Zheng Wang
2022-12-19 8:22 ` Wang, Zhi A
2022-12-19 9:21 ` Zheng Wang
2022-12-19 12:46 ` [PATCH v4] [PATCH v4] " Zheng Wang
2022-12-19 12:52 ` [RESEND PATCH " Zheng Wang
2022-12-20 8:22 ` Zhenyu Wang
2022-12-20 9:03 ` Zheng Hacker
2022-12-20 9:40 ` [PATCH v5] " Zheng Wang
2022-12-21 2:58 ` Zhenyu Wang
2022-12-21 5:01 ` Zheng Hacker
2022-12-29 16:56 ` [PATCH v6] " Zheng Wang
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