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Subject: Re: [tip:x86/urgent] x86/boot: Prevent KASLR and memmap collision
To: Ingo Molnar <mingo@kernel.org>, linux-kernel@vger.kernel.org,
        tglx@linutronix.de, hpa@zytor.com
References: <148044760044.153060.616417783293212181.stgit@djiang5-desk3.ch.intel.com>
 <tip-d1a5058c063d9e0aaaf4d360d0f8074ee55ed096@git.kernel.org>
 <20161220083118.GA810@gmail.com>
Cc: linux-tip-commits@vger.kernel.org, Kees Cook <keescook@chromium.org>
From: Dave Jiang <dave.jiang@intel.com>
Message-ID: <1f20c79e-af1c-a15d-8076-e888fab81ff0@intel.com>
Date: Tue, 20 Dec 2016 11:23:51 -0700
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On 12/20/2016 01:31 AM, Ingo Molnar wrote:
> 
> * tip-bot for Dave Jiang <tipbot@zytor.com> wrote:
> 
>> Commit-ID:  d1a5058c063d9e0aaaf4d360d0f8074ee55ed096
>> Gitweb:     http://git.kernel.org/tip/d1a5058c063d9e0aaaf4d360d0f8074ee55ed096
>> Author:     Dave Jiang <dave.jiang@intel.com>
>> AuthorDate: Tue, 29 Nov 2016 12:26:40 -0700
>> Committer:  Thomas Gleixner <tglx@linutronix.de>
>> CommitDate: Mon, 19 Dec 2016 12:27:52 +0100
>>
>> x86/boot: Prevent KASLR and memmap collision
> 
> This commit breaks the 32-bit build (allyesconfig32 and allmodconfig32):
> 
>  ld: -r and -shared may not be used together
>  scripts/Makefile.build:293: recipe for target 'arch/x86/boot/compressed/kaslr.o' failed
>  make[2]: *** [arch/x86/boot/compressed/kaslr.o] Error 1
>  make[2]: *** Waiting for unfinished jobs....
> 
> Thanks,
> 
> 	Ingo
> 

Looks like including lib/cmdline.c causes the issue. I'll need to find a
way around it.