From mboxrd@z Thu Jan  1 00:00:00 1970
From: Fengguang Wu <wfg@linux.intel.com>
Subject: Re: Kernel boot hangs on commit "switch fput to task_work_add"
Date: Sat, 14 Jul 2012 22:34:59 +0800
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To: Al Viro <viro@ZenIV.linux.org.uk>
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On Sat, Jul 14, 2012 at 03:14:15PM +0100, Al Viro wrote:
> On Sat, Jul 14, 2012 at 09:58:49PM +0800, Fengguang Wu wrote:
> > > Hi Al, here I got the output for
> > > 
> > > (qemu) sendkey alt-sysrq-l
> > > (qemu) sendkey alt-sysrq-t
> > 
> > I repeated that several times and here are the results.
> > 
> > (qemu) sendkey alt-sysrq-l
> > (qemu) sendkey alt-sysrq-l
> > (qemu) sendkey alt-sysrq-l
> > (qemu) sendkey alt-sysrq-t
> > (qemu) sendkey alt-sysrq-t
> > (qemu) quit
> > 
> > The user space shutdown is polling on something, which prevents the
> > system from reboot..
> 
> Which userland it is?

It's a customized ubuntu core. The original tgz image is downloaded
here, however it's not directly usable as initrd.. Should I send my
hacked one?

24M     quantal-core-x86_64.cgz

http://cdimage.ubuntu.com/ubuntu-core/releases/quantal/alpha-2/

Thanks,
Fengguang