linux-kernel - Re: framebuffer corruption due to overlapping stp instructions on arm64

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Message-ID: <alpine.LRH.2.02.1808081010130.9997@file01.intranet.prod.int.rdu2.redhat.com>
Date:   Wed, 8 Aug 2018 10:10:48 -0400 (EDT)
From:   Mikulas Patocka <mpatocka@...hat.com>
To:     Marcin Wojtas <mw@...ihalf.com>
cc:     Ard Biesheuvel <ard.biesheuvel@...aro.org>,
        Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>,
        Joao Pinto <Joao.Pinto@...opsys.com>,
        Catalin Marinas <catalin.marinas@....com>,
        linux-pci@...r.kernel.org, Will Deacon <will.deacon@....com>,
        Russell King - ARM Linux <linux@...linux.org.uk>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Matt Sealey <neko@...uhatsu.net>,
        Jingoo Han <jingoohan1@...il.com>,
        Robin Murphy <robin.murphy@....com>,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: framebuffer corruption due to overlapping stp instructions on
 arm64



On Wed, 8 Aug 2018, Marcin Wojtas wrote:

> Hi Mikulas,
> 
> wt., 7 sie 2018 o 19:39 Mikulas Patocka <mpatocka@...hat.com> napisa?(a):
> >
> >
> >
> > On Tue, 7 Aug 2018, Marcin Wojtas wrote:
> >
> > > Ard, Mikulas,
> > >
> > > After some self-caused setup issues I was able to run the test on my
> > > MacchiatoBin with the kernel v4.18-rc8. It's been running for 1h+ now,
> > > loading the CPU to 100% and no single error event...
> > >
> > > I built the binary file with:
> > > gcc-linaro-7.2.1-2017.11-x86_64_aarch64-linux-gnu/bin/aarch64-linux-gnu-gcc -O2
> > >
> > > Maybe it's the older firmware issue?
> >
> > I have downloaded and built the firmware recently (it has timestamp Jul 30
> > 2018).
> >
> > Do you still have your firmware file "flash-image.bin" that you used, so
> > that I could try it?
> 
> Attached. Please let know if you see any difference.

I booted this image, but the same corruption happens.

Mikulas