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Date: Tue, 22 Apr 2025 08:06:37 +0200
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: Qingfang Deng <dqfext@gmail.com>
Cc: Sasha Levin <sashal@kernel.org>, stable@vger.kernel.org
Subject: Re: Please apply d2155fe54ddb to 5.10 and 5.4
Message-ID: <2025042251-energize-preorder-31cd@gregkh>
References: <CALW65jbBY3EyRD-5vXz6w87Q+trxaod-QVy2NhVxLNcQHVw0hg@mail.gmail.com>
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On Tue, Apr 22, 2025 at 02:04:45PM +0800, Qingfang Deng wrote:
> Hi Greg and Sasha,
> 
> Please consider applying d2155fe54ddb ("mm: compaction: remove
> duplicate !list_empty(&sublist) check") to 5.10 and 5.4, as it
> resolves a -Wdangling-pointer warning in recent GCC versions:
> 
> In function '__list_cut_position',
>     inlined from 'list_cut_position' at ./include/linux/list.h:400:3,
>     inlined from 'move_freelist_tail' at mm/compaction.c:1241:3:
> ./include/linux/list.h:370:21: warning: storing the address of local
> variable 'sublist' in '*&freepage_6(D)->D.15621.D.15566.lru.next'
> [-Wdangling-pointer=]

All mm patches MUST get approval from the mm maintainers/developers
before we can apply them to stable kernels.

Can you please do that here?

thanks,

greg k-h