Re: [PATCH 6.6 00/28] fix CVE-2024-46701

[Greg KH <gregkh@linuxfoundation.org>]

On Thu, Oct 24, 2024 at 09:19:41PM +0800, Yu Kuai wrote:
> From: Yu Kuai <yukuai3@huawei.com>
> 
> Fix patch is patch 27, relied patches are from:
> 
>  - patches from set [1] to add helpers to maple_tree, the last patch to
> improve fork() performance is not backported;

So things slowed down?

>  - patches from set [2] to change maple_tree, and follow up fixes;
>  - patches from set [3] to convert offset_ctx from xarray to maple_tree;
> 
> Please notice that I'm not an expert in this area, and I'm afraid to
> make manual changes. That's why patch 16 revert the commit that is
> different from mainline and will cause conflict backporting new patches.
> patch 28 pick the original mainline patch again.
> 
> (And this is what we did to fix the CVE in downstream kernels).
> 
> [1] https://lore.kernel.org/all/20231027033845.90608-1-zhangpeng.00@bytedance.com/
> [2] https://lore.kernel.org/all/20231101171629.3612299-2-Liam.Howlett@oracle.com/T/
> [3] https://lore.kernel.org/all/170820083431.6328.16233178852085891453.stgit@91.116.238.104.host.secureserver.net/

This series looks rough.  I want to have the maintainers of these
files/subsystems to ack this before being able to take them.

thanks,

greg k-h