linux-kernel - [stable] KASLR could not find suitable E820 region...

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Message-ID: <20141125191416.GA4648@wfg-t540p.sh.intel.com>
Date:	Tue, 25 Nov 2014 11:14:16 -0800
From:	Fengguang Wu <fengguang.wu@...el.com>
To:	Kees Cook <keescook@...omium.org>,
	"Qian, Shijun" <shijun.qian@...el.com>
Cc:	"Bernal Marin, Miguel" <miguel.bernal.marin@...el.com>,
	Yuanhan Liu <yuanhan.liu@...el.com>,
	LKML <linux-kernel@...r.kernel.org>, stable@...r.kernel.org
Subject: [stable] KASLR could not find suitable E820 region...

Hi Kees,

We noticed the below boot errors in stable kernels 3.16.7 and 3.17.2
on real hardwares:

        early console in decompress_kernel
        KASLR could not find suitable E820 region...

        Decompressing Linux... Parsing ELF... Performing relocations... 

        32-bit relocation outside of kernel!

These kconfig options are enabled:

        CONFIG_RANDOMIZE_BASE=y
        CONFIG_RANDOMIZE_BASE_MAX_OFFSET=0x40000000

Before digging further, we'd like to ask for a quick answer that
whether they've been fixed by some commit in current mainline kernel?

Thanks,
Fengguang
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