linux-kernel - Re: [Oops][next-20170614][] powerpc boot fails with WARNING: CPU: 12 PID: 0 at mm/memblock.c

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Date:   Fri, 16 Jun 2017 10:04:16 +1000
From:   Benjamin Herrenschmidt <benh@...nel.crashing.org>
To:     "Rowand, Frank" <Frank.Rowand@...y.com>,
        Abdul Haleem <abdhalee@...ux.vnet.ibm.com>
Cc:     sachinp <sachinp@...ux.vnet.ibm.com>,
        Stephen Rothwell <sfr@...b.auug.org.au>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        linux-next <linux-next@...r.kernel.org>,
        linuxppc-dev <linuxppc-dev@...ts.ozlabs.org>
Subject: Re: [Oops][next-20170614][] powerpc boot fails with WARNING: CPU:
 12 PID: 0 at mm/memblock.c

On Thu, 2017-06-15 at 17:06 +0000, Rowand, Frank wrote:
> On Thursday, June 15, 2017 2:25 AM, Abdul Haleem [mailto:abdhalee@...ux.vnet.ibm.com]  wrote:
> > 
> > On Thu, 2017-06-15 at 11:30 +0530, Abdul Haleem wrote:
> > > Hi,
> > > 
> > > linux-next fails to boot on powerpc Bare-metal with these warnings.
> > > 
> > > machine booted fine on next-20170613
> > 
> > Thanks Michael, Yes it is (75fe04e59 of: remove *phandle properties from
> > expanded device tree)
> > 
> > Frank, would you please take a look at the trace.
> > 
> > Thanks
> 
> < snip >
> 
> My patch series 'of: remove *phandle properties from expanded device tree'
> in -next seems to have broken boot for a significant number of powerpc
> systems.  I am actively working on understanding and fixing the problem.

I think kexec needs them in sysfs (or /proc) when building the fdt
for the target kernel.

Cheers,
Ben.