linux-kernel - Re: 'kbuild' merge before 4.9-rc1 breaks build and boot

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Date:   Mon, 21 Nov 2016 16:49:40 +1100
From:   Nicholas Piggin <npiggin@...il.com>
To:     Peter Wu <peter@...ensteyn.nl>
Cc:     Vince Weaver <vincent.weaver@...ne.edu>,
        Michal Marek <mmarek@...e.com>,
        Al Viro <viro@...iv.linux.org.uk>,
        Oliver Hartkopp <socketcan@...tkopp.net>,
        linux-kernel@...r.kernel.org, linux-kbuild@...r.kernel.org,
        linux-arch@...r.kernel.org, regressions@...mhuis.info,
        Adam Borowski <kilobyte@...band.pl>
Subject: Re: 'kbuild' merge before 4.9-rc1 breaks build and boot

On Sun, 20 Nov 2016 19:26:23 +0100
Peter Wu <peter@...ensteyn.nl> wrote:

> Hi Nicholas,
> 
> Current git master (v4.9-rc5-364-g77079b1) with the latest kbuild fixes
> is still failing to load modules when built with CONFIG_MODVERSIONS=y on
> x86_64 using GCC 6.2.1.
> 
> It can still be reproduced with make defconfig, then enabling
> CONFIG_MODVERSIONS=y. The build output contains:
> 
>     WARNING: "memcpy" [net/netfilter/nf_nat.ko] has no CRC!
>     WARNING: "memmove" [net/netfilter/nf_nat.ko] has no CRC!
>     WARNING: "_copy_to_user" [fs/efivarfs/efivarfs.ko] has no CRC!
>     WARNING: "memcpy" [fs/efivarfs/efivarfs.ko] has no CRC!
>     WARNING: "_copy_from_user" [fs/efivarfs/efivarfs.ko] has no CRC!

Hi Peter,

Sorry it's taken some time, bear with us. The arch specific patches need
to be merged now. Adam, what is the status of your patch? Please submit
to x86 maintainers if you haven't already.

Thanks,
Nick