linux-kernel - Re: bisected - arm64 kvm unit test failures

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Message-ID: <1533103345.4735.19.camel@gmx.de>
Date:   Wed, 01 Aug 2018 08:02:25 +0200
From:   Mike Galbraith <efault@....de>
To:     Marc Zyngier <marc.zyngier@....com>
Cc:     Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
        Thomas Gleixner <tglx@...utronix.de>,
        LKML <linux-kernel@...r.kernel.org>,
        linux-rt-users <linux-rt-users@...r.kernel.org>,
        Steven Rostedt <rostedt@...dmis.org>
Subject: Re: bisected - arm64 kvm unit test failures

On Wed, 2018-08-01 at 06:35 +0100, Marc Zyngier wrote:
> 
> Is it something that is reproducible with the current mainline (non-RT)?

These waters are a bit muddy, it's config dependent.  I'm trying to
generate a reproducing !RT config for -rc7 as we speak.  If I build
openSUSE/master-default, it does NOT reproduce.  That with the bisect
config just finished building, and.... yup, it reproduced (attached). 

Every RT tree 4.16..master.today reproduces, and is fixed up (modulo
the RT specific failure) by reverting the fingered commit.

> Pretty worrying. What HW is that on?

Box is a 4 node/64 core TaiShan 2280.

	-Mike
Download attachment "config-4.18.0-rc7-bisect.xz" of type "application/x-xz" (27428 bytes)