linux-kernel - Re: linux-next: build failure after merge of the akpm-current tree

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Date:   Fri, 26 Jun 2020 14:08:05 -0700
From:   Kees Cook <keescook@...omium.org>
To:     Stephen Rothwell <sfr@...b.auug.org.au>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Linux Next Mailing List <linux-next@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: linux-next: build failure after merge of the akpm-current tree

On Fri, Jun 26, 2020 at 05:06:03PM +1000, Stephen Rothwell wrote:
> Hi all,
> 
> After merging the akpm-current tree, today's linux-next build (sparc
> defconfig) failed like this:
> 
> mm/slab.c: In function '___cache_free':
> mm/slab.c:3471:2: error: implicit declaration of function '__free_one'; did you mean '__free_page'? [-Werror=implicit-function-declaration]
>   __free_one(ac, objp);
>   ^~~~~~~~~~
>   __free_page
> 
> 
> Caused by commit
> 
>   1420b22124be ("mm/slab: add naive detection of double free")
> 
> __free_one() is ony defined when CONFIG_NUMA is set but used more
> generally.
> 
> I have reverted that commit for today.

Thanks! Just to close the loop here, Randy also pointed this out and
I've sent a fix:
https://lore.kernel.org/lkml/1de6b098-a759-dd96-df5d-9a282b2a991b@infradead.org/

-- 
Kees Cook