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From: 李力琼 <liqiong@nfschina.com>
To: Greg KH <gregkh@linuxfoundation.org>
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org
Subject: Re: [PATCH] mm: fix dereference a null pointer in migrate[_huge]_page_move_mapping()
Date: Thu, 17 Feb 2022 15:59:21 +0800	[thread overview]
Message-ID: <64157952-22d7-b21b-1b08-c784b8eed1fe@nfschina.com> (raw)
In-Reply-To: <Yg35UXjB7RpqVCOI@kroah.com>

Hi Greg,

Upstream replaces migrate_page_move_mapping() with folio_migrate_mapping(),
does not use radix tree any more. So, the upstream don't have the null
pointer bug.

We found and fix this bug on '4.19.191'.

在 2022/2/17 下午3:29, Greg KH 写道:
> On Thu, Feb 17, 2022 at 02:38:08PM +0800, liqiong wrote:
>> Upstream has no this bug.
> What do you mean by this?
>
> confused,
>
> greg k-h

  parent reply	other threads:[~2022-02-17  7:59 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-02-17  6:38 [PATCH] mm: fix dereference a null pointer in migrate[_huge]_page_move_mapping() liqiong
2022-02-17  7:29 ` Greg KH
2022-02-17  7:51   ` David Hildenbrand
2022-02-17  8:48     ` 李力琼
2022-02-17  8:56       ` David Hildenbrand
2022-02-17  7:59   ` 李力琼 [this message]
2022-02-17  8:39     ` 李力琼
2022-02-17 11:54 ` [PATCH] [PATCH 4.19 STABLE] " liqiong
2022-03-17 10:26   ` Greg KH

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