linux-kernel - Re: frequent lockups in 3.18rc4

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Message-ID: <20141120165404.GA30170@redhat.com>
Date:	Thu, 20 Nov 2014 11:54:04 -0500
From:	Vivek Goyal <vgoyal@...hat.com>
To:	Dave Jones <davej@...hat.com>, Don Zickus <dzickus@...hat.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	the arch/x86 maintainers <x86@...nel.org>,
	WANG Chao <chaowang@...hat.com>, Baoquan He <bhe@...hat.com>,
	Dave Young <dyoung@...hat.com>
Subject: Re: frequent lockups in 3.18rc4

On Thu, Nov 20, 2014 at 11:10:55AM -0500, Dave Jones wrote:
> On Wed, Nov 19, 2014 at 11:28:06AM -0500, Vivek Goyal wrote:
>  
>  > I am wondering may be in some cases we panic in second kernel and sit
>  > there. Probably we should append a kernel command line automatically
>  > say "panic=1" so that it reboots itself if second kernel panics.
>  > 
>  > By any chance, have you enabled "CONFIG_RANDOMIZE_BASE"? If yes, please
>  > disable that as currently kexec/kdump stuff does not work with it. And
>  > it hangs very early in the boot process and I had to hook serial console
>  > to get following message on console.
> 
> I did have that enabled. (Perhaps the kconfig should conflict?)

Hi Dave,

Can you please also send me your kernel config file. I will try that on
my machine and see if I can reproduce the problem on my machine.

Thanks
Vivek
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