linux-kernel - Re: [PATCH 1/3] um: fix parallel building with O= option

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <CAGXu5jK4aNuZ+RR4eC80yUQ2zxSoU9=ioaJBtt=VaX=_oZC=ew@mail.gmail.com>
Date:   Sat, 15 Sep 2018 11:47:07 -0700
From:   Kees Cook <keescook@...omium.org>
To:     Masahiro Yamada <yamada.masahiro@...ionext.com>
Cc:     Jeff Dike <jdike@...toit.com>, Richard Weinberger <richard@....at>,
        linux-um@...ts.infradead.org, Randy Dunlap <rdunlap@...radead.org>,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        Michal Marek <michal.lkml@...kovi.net>,
        Sam Ravnborg <sam@...nborg.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/3] um: fix parallel building with O= option

On Fri, Aug 3, 2018 at 9:47 PM, Masahiro Yamada
<yamada.masahiro@...ionext.com> wrote:
> Randy Dunlap reports UML occasionally fails to build with -j<N> and
> O=<builddir> options.

With v4.19-rc2 I'm still seeing a failure (for any parallelism) under ARCH=um

$ make -j8 ARCH=um O=/tmp/foo
...
/home/kees/src/linux-build/um/Makefile:1185: *** Headers not
exportable for the um architecture.  Stop.

Am I missing something?

-Kees

-- 
Kees Cook
Pixel Security