linux-kernel - Re: pmwg/integ bisection: baseline.login on rk3328-rock64

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Message-ID: <CAKfTPtAeNCfqRJ8F3ZGTv1-q0fntXVJizOEmC6oqqXssiy6GfQ@mail.gmail.com>
Date:   Wed, 13 Jan 2021 15:53:32 +0100
From:   Vincent Guittot <vincent.guittot@...aro.org>
To:     Arnd Bergmann <arnd@...nel.org>
Cc:     Guillaume Tucker <guillaume.tucker@...labora.com>,
        "kernelci-results@...ups.io" <kernelci-results@...ups.io>,
        Anson Huang <Anson.Huang@....com>,
        Will Deacon <will@...nel.org>, Li Yang <leoyang.li@....com>,
        Arnd Bergmann <arnd@...db.de>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Shawn Guo <shawnguo@...nel.org>,
        Max Krummenacher <max.oss.09@...il.com>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        LAK <linux-arm-kernel@...ts.infradead.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Michael Walle <michael@...le.cc>
Subject: Re: pmwg/integ bisection: baseline.login on rk3328-rock64

On Wed, 13 Jan 2021 at 15:49, Arnd Bergmann <arnd@...nel.org> wrote:
>
> On Tue, Jan 12, 2021 at 2:46 PM Vincent Guittot
> <vincent.guittot@...aro.org> wrote:
> > On Tue, 12 Jan 2021 at 12:25, Guillaume Tucker <guillaume.tucker@...labora.com> wrote:
> > >
> > > Some details can be found here:
> > >
> > >   https://kernelci.org/test/case/id/5ffb978de38e717501c94cd8/
> > >
> > > The bisection was run with CONFIG_RANDOMIZE_BASE=y enabled, but
> > > the same issue occurs with a plain defconfig from that branch.
> > > Results with other configs and platforms can be compared here:
> > >
> > >   https://kernelci.org/test/job/pmwg/branch/integ/kernel/v5.11-rc3-13-gcea05edf93998/plan/baseline/
> > >
> > > Please let us know if you need some help to test a fix or debug
> > > the issue.
> >
> > I don't have any rockchip board on which I can run tests but I can
> > push an updated version of the patch without trace events if this can
> > then be then tested on kernelci rockchip board.
>
> It's odd that there is no output from the kernel at all, which
> rules out most of the options that change, as they should only
> have an effect later during boot.
>
> One thing I noticed is that the last successful boot has a kernel
> image size just under 32MB for the vmlinux, while the failing
> configurations have more than 34MB.
>
> I looked at the loadaddress as well:
>
> 11:43:57.119234  Filename '536723/tftp-deploy-j462agcw/kernel/Image'.
> 11:43:57.122622  Load address: 0x2000000
> 11:43:59.708404  Bytes transferred = 34361856 (20c5200 hex)
> ...
> 11:43:59.814346  Filename
> '536723/tftp-deploy-j462agcw/ramdisk/ramdisk.cpio.gz.uboot'.
> 11:43:59.814638  Load address: 0x4000000
> 11:44:00.447924  Bytes transferred = 8517374 (81f6fe hex)
>
> So the ramdisk and the kernel overlap when the kernel is larger than 32MB!

Good catch Arnd.
Thanks

>
>      Arnd