linux-kernel - mm: OS boot failed when set command-line kmemcheck=1

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Date:	Wed, 19 Feb 2014 14:56:15 +0800
From:	Xishi Qiu <qiuxishi@...wei.com>
To:	Vegard Nossum <vegard.nossum@...il.com>
CC:	Linux MM <linux-mm@...ck.org>, LKML <linux-kernel@...r.kernel.org>,
	Xishi Qiu <qiuxishi@...wei.com>
Subject: mm: OS boot failed when set command-line kmemcheck=1

Hi all,

CONFIG_KMEMCHECK=y and set command-line "kmemcheck=1", I find OS 
boot failed. The kernel is v3.14.0-rc3

If set "kmemcheck=1 nowatchdog", OS will boot successfully.

Here is the boot failed log:
[   23.586826] Freeing unused kernel memory: 1160K (ffff8800014de000 - ffff88000
1600000)
[   23.600248] Freeing unused kernel memory: 1696K (ffff880001858000 - ffff88000
1a00000)
[   23.615534] Kernel panic - not syncing: Attempted to kill init! exitcode=0x00
000005
[   23.615534]
[   23.624885] CPU: 0 PID: 1 Comm: init Tainted: G        W    3.14.0-rc3-0.1-de
fault+ #1
[   23.632957] Hardware name: Huawei Technologies Co., Ltd. Tecal RH2285
  /BC11BTSA              , BIOS CTSAV036 04/27/2011
[   23.644661]  ffff880c1dd28000 ffff880c1dd31c48 ffffffff814ca491 ffff880c1dd31
cc8
[   23.652416]  ffffffff814ca1e6 0000000000000010 ffff880c1dd31cd8 ffff880c1dd31
c78
[   23.660171]  0000000000000027 ffff880c1dcb8280 0000000000000005 ffff880c1dd28
000
[   23.667931] Call Trace:
[   23.670482]  [<ffffffff814ca491>] dump_stack+0x6a/0x79
[   23.675712]  [<ffffffff814ca1e6>] panic+0xb9/0x1f4
[   23.680599]  [<ffffffff8104f78e>] forget_original_parent+0x42e/0x430
[   23.687043]  [<ffffffff81107da0>] ? perf_cgroup_switch+0x170/0x170
[   23.693314]  [<ffffffff8104f7a1>] exit_notify+0x11/0x140
[   23.698722]  [<ffffffff8104fb00>] do_exit+0x230/0x490
[   23.703865]  [<ffffffff8104fda3>] do_group_exit+0x43/0xb0
[   23.709357]  [<ffffffff8105fb31>] get_signal_to_deliver+0x241/0x4b0
[   23.715713]  [<ffffffff81002a0c>] do_notify_resume+0xac/0x1a0
[   23.721551]  [<ffffffff814d712a>] int_signal+0x12/0x17
[   23.726786] Kernel Offset: 0x0 from 0xffffffff81000000 (relocation range: 0xf
fffffff80000000-0xffffffff9fffffff)

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