linux-kernel - Re: Problems with arm64 compat vdso

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Message-ID: <CAKv+Gu_-zGLaZfWb5r-yrMjh-cST+zvL7HrYV8ubf9ch0m4oqw@mail.gmail.com>
Date:   Wed, 25 Sep 2019 17:58:47 +0200
From:   Ard Biesheuvel <ard.biesheuvel@...aro.org>
To:     Vincenzo Frascino <vincenzo.frascino@....com>
Cc:     Will Deacon <will@...nel.org>, linux-kernel@...ts.infradead.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Russell King <linux@...linux.org.uk>,
        Catalin Marinas <catalin.marinas@....com>
Subject: Re: Problems with arm64 compat vdso

On Mon, 23 Sep 2019 at 18:41, Ard Biesheuvel <ard.biesheuvel@...aro.org> wrote:
>
> On Fri, 20 Sep 2019 at 18:33, Vincenzo Frascino
> <vincenzo.frascino@....com> wrote:
> >
> > Hi Will,
> >
> > thank you for reporting this.
> >
> > On 20/09/2019 15:27, Will Deacon wrote:
> > > Hi Vincenzo,
> > >
> > > I've been running into a few issues with the COMPAT vDSO. Please could
> > > you have a look?
> > >
> >
> > I will be at Linux Recipes next week. I will look at this with priority when I
> > come back.
> >
>
> Hi all,
>
> I noticed another issue: I build out of tree, and the VDSO gets
> rebuilt every time I build the kernel, even if I haven't made any
> changes to the source tree at all.
>
> Could you please look into that as well? (once you get around to it)
>

I haven't managed to reproduce this on a fresh checkout, so it looks
like this is a transient thing.