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Date: Fri, 15 Jul 2016 18:20:45 +0200
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To: Anton Blanchard <anton@samba.org>
Cc: Anna-Maria Gleixner <anna-maria@linutronix.de>,
        LKML <linux-kernel@vger.kernel.org>,
        Peter Zijlstra <peterz@infradead.org>, Ingo Molnar <mingo@kernel.org>,
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        Paul Mackerras <paulus@samba.org>,
        Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com>,
        linuxppc-dev@lists.ozlabs.org
Subject: Re: [patch V2 30/67] powerpc/numa: Convert to hotplug state machine
Message-ID: <20160715162045.GE16938@linutronix.de>
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* Anton Blanchard | 2016-07-15 10:28:25 [+1000]:

>Hi Anna-Maria,
Hi Anton,

>> >> Install the callbacks via the state machine and let the core invoke
>> >> the callbacks on the already online CPUs.  
>> >
>> > This is causing an oops on ppc64le QEMU, looks like a NULL
>> > pointer:  
>> 
>> Did you tested it against tip WIP.hotplug?
>
>I noticed tip started failing in my CI environment which tests on QEMU.
>The failure bisected to commit 425209e0abaf2c6e3a90ce4fedb935c10652bf80
>
>It reproduces running ppc64le QEMU on a x86-64 box. On Ubuntu:
…

Thanks for that. I can reproduce this ontop of latest WIP.hotplug with
this patch.

>Anton

Sebastian