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Date: Mon, 16 Dec 2013 12:35:10 +0100
From: Christoph Paasch <christoph.paasch@uclouvain.be>
To: linux-kernel@vger.kernel.org, x86@kernel.org
Cc: WANG Cong <xiyou.wangcong@gmail.com>, Yinghai Lu <yinghai@kernel.org>,
        Tejun Heo <tj@kernel.org>, ianfang.cn@gmail.com,
        Andrew Morton <akpm@linux-foundation.org>,
        Ingo Molnar <mingo@redhat.com>, Thomas Gleixner <tglx@linutronix.de>,
        "H. Peter Anvin" <hpa@zytor.com>
Subject: BUG: crashkernel does not boot upon crash from sysrq-trigger
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Hello,

since 3.5, my crashkernel does not boot anymore when triggering an oops with
/proc/sysrq-trigger on my HP Elitebook 8540p.

I bisected it down to 722bc6b16771ed8 (x86/mm: Fix the size calculation of
mapping tables).


Does anybody has an idea what is going wrong here?
Let me know, if I should provide more information.


Thanks,
Christoph