Re: [PATCH] mm: fix dereference a null pointer in migrate[_huge]_page_move_mapping()

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