linux-kernel - Re: linux-next: build failure after merge of the mm-hotfixes tree

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Message-ID: <aKbroo3zVidG0YdK@hyeyoo>
Date: Thu, 21 Aug 2025 18:49:22 +0900
From: Harry Yoo <harry.yoo@...cle.com>
To: Stephen Rothwell <sfr@...b.auug.org.au>
Cc: Andrew Morton <akpm@...ux-foundation.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Next Mailing List <linux-next@...r.kernel.org>
Subject: Re: linux-next: build failure after merge of the mm-hotfixes tree

On Thu, Aug 21, 2025 at 04:05:15PM +1000, Stephen Rothwell wrote:
> Hi all,
> 
> After merging the mm-hotfixes tree, today's linux-next build (powerpc
> allyesconfig) failed like this:
> 
> ld: mm/kasan/init.o:(.toc+0x0): undefined reference to `kasan_early_shadow_p4d'
> 
> Caused by commit
> 
>   4b99d7a3e69a ("mm: introduce and use {pgd,p4d}_populate_kernel()")
> 
> I have reverted that commit (and the following 07cf1bc1f659) for today.

Hi Stephen, thanks for reporting the build error.
I've sent a fix for it [1], and hopefully we can add it to mm-hotfixes soon.

[1] https://lore.kernel.org/linux-mm/20250821093542.37844-1-harry.yoo@oracle.com

-- 
Cheers,
Harry / Hyeonggon