From mboxrd@z Thu Jan  1 00:00:00 1970
From: Andy Shevchenko <andy.shevchenko@gmail.com>
Date: Wed, 5 Sep 2018 20:31:19 +0300
Subject: [U-Boot] Fwd: Parallel build is broken
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On Wed, Sep 5, 2018 at 2:58 PM Adam Ford <aford173@gmail.com> wrote:
>
> On Wed, Sep 5, 2018 at 3:46 AM Alex Kiernan <alex.kiernan@gmail.com> wrote:
> >
> > On Tue, Sep 4, 2018 at 3:54 PM Andy Shevchenko
> > <andy.shevchenko@gmail.com> wrote:
> > >
> > > On Tue, Sep 4, 2018 at 5:50 PM Andy Shevchenko
> > > <andy.shevchenko@gmail.com> wrote:
> > > >
> > > > On Tue, Sep 4, 2018 at 5:00 PM Tom Rini <trini@konsulko.com> wrote:
> > > > >
> > > > > On Tue, Sep 04, 2018 at 03:42:05PM +0300, Andy Shevchenko wrote:
> > > > >
> > > > > > ---------- Forwarded message ---------
> > > > > > From: Andy Shevchenko <andy.shevchenko@gmail.com>
> > > > > > Date: Tue, Sep 4, 2018 at 3:40 PM
> > > > > > Subject: Parallel build is broken
> > > > > > To: Tom Rini <trini@konsulko.com>
> > > > > > Cc: Bin Meng <bmeng.cn@gmail.com>, Simon Glass <sjg@chromium.org>
> > > > > >
> > > > > >
> > > > > > U-Boot can't be build with make -j16.
> > > > > >
> > > > > > Second pass passes fine.
> > > > > >
> > > > > > Didn't investigate myself and probably will not have time (near to
> > > > > > vacation time for me).
> > > > > > So, please, fix it before release.
> > > > > >
> > > > > > sh: echo: I/O error
> > > > > > make[1]: *** [scripts/Makefile.build:278: common/malloc_simple.o] Error 1
>
> I am no expert, but I/O error to me indicates a hardware problem on
> the build machine and not necessarily a software issue.

Not exactly. AFAIR it's a message mapped to EIO errno.
The scenario can be like that (hypothetically), make runs compiler,
but instead of compiler ccache is being called and, in case it's
somehow broken, it might try to access to wrong block on the block
device which returns EIO on some (read()?) system call.

-- 
With Best Regards,
Andy Shevchenko