linux-kernel - Re: linux-next: build warning after merge of the tip tree

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Message-ID: <20201004210018.5bbc6126@canb.auug.org.au>
Date:   Sun, 4 Oct 2020 21:00:18 +1100
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     Kees Cook <keescook@...omium.org>
Cc:     Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...e.hu>,
        "H. Peter Anvin" <hpa@...or.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Linux Next Mailing List <linux-next@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: linux-next: build warning after merge of the tip tree

Hi Kees,

On Sun, 4 Oct 2020 01:27:01 -0700 Kees Cook <keescook@...omium.org> wrote:
>
> I assume CONFIG_CONSTRUCTORS is enabled for your build (it should be for

yes, indeed.

> allmodconfig). Does this patch fix it? (I'm kind of blindly guessing
> based on my understanding of where this could be coming from...)
> 
> 
> diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
> index e1843976754a..22f14956214a 100644
> --- a/include/asm-generic/vmlinux.lds.h
> +++ b/include/asm-generic/vmlinux.lds.h
> @@ -701,6 +701,7 @@
>  #ifdef CONFIG_CONSTRUCTORS
>  #define KERNEL_CTORS()	. = ALIGN(8);			   \
>  			__ctors_start = .;		   \
> +			KEEP(*(SORT(.ctors.*)))		   \
>  			KEEP(*(.ctors))			   \
>  			KEEP(*(SORT(.init_array.*)))	   \
>  			KEEP(*(.init_array))		   \

And that makes the messages go away.

-- 
Cheers,
Stephen Rothwell

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