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Subject: Re: [PATCH] mm: fix dereference a null pointer in
 migrate[_huge]_page_move_mapping()
To:     David Hildenbrand <david@redhat.com>,
        Greg KH <gregkh@linuxfoundation.org>
Cc:     linux-mm@kvack.org, linux-kernel@vger.kernel.org,
        stable@vger.kernel.org
References: <20220217063808.42018-1-liqiong@nfschina.com>
 <Yg35UXjB7RpqVCOI@kroah.com>
 <d29fd91b-2043-0880-17ab-0ef7ec14bf62@redhat.com>
From:   =?UTF-8?B?5p2O5Yqb55C8?= <liqiong@nfschina.com>
Message-ID: <8f00ecbf-245d-f063-40a3-4aaa77680b73@nfschina.com>
Date:   Thu, 17 Feb 2022 16:48:27 +0800
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在 2022/2/17 下午3:51, David Hildenbrand 写道:
> On 17.02.22 08:29, Greg KH wrote:
>> On Thu, Feb 17, 2022 at 02:38:08PM +0800, liqiong wrote:
>>> Upstream has no this bug.
>> What do you mean by this?
>>
>> confused,
> Dito. If this is fixed upstream and broken in stable kernels, we'd want
> either a backport of the relevant upstream fix, or if too complicated, a
> stable-only fix.
>
>
There is a wrong describe， i thought 'Upstream' as the newest code.
The newest code has no this bug, i should submit this patch to "longterm:4.19".
How could i do it ?

Thanks.