linux-kernel - BUG: crashkernel does not boot upon crash from sysrq-trigger

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Message-ID: <20131216113510.GA5211@cpaasch-mac>
Date:	Mon, 16 Dec 2013 12:35:10 +0100
From:	Christoph Paasch <christoph.paasch@...ouvain.be>
To:	linux-kernel@...r.kernel.org, x86@...nel.org
Cc:	WANG Cong <xiyou.wangcong@...il.com>,
	Yinghai Lu <yinghai@...nel.org>, Tejun Heo <tj@...nel.org>,
	ianfang.cn@...il.com, Andrew Morton <akpm@...ux-foundation.org>,
	Ingo Molnar <mingo@...hat.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>
Subject: BUG: crashkernel does not boot upon crash from sysrq-trigger

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

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