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From:   Richard Weinberger <richard@nod.at>
To:     Masahiro Yamada <yamada.masahiro@socionext.com>
Cc:     Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Kate Stewart <kstewart@linuxfoundation.org>,
        Nicholas Piggin <npiggin@gmail.com>,
        Kees Cook <keescook@chromium.org>,
        Andrew Morton <akpm@linux-foundation.org>, david@sigma-star.at,
        kbuild-all@01.org, Sam Ravnborg <sam@ravnborg.org>,
        Arnaud Lacombe <lacombar@gmail.com>,
        Nick Bowler <nbowler@elliptictech.com>,
        Michal Marek <mmarek@suse.cz>, Nicolas Pitre <nico@linaro.org>,
        Rusty Russell <rusty@rustcorp.com.au>
Subject: Re: [PATCH v2] kbuild: Don't source kernel config
Date:   Tue, 20 Feb 2018 16:25:32 +0100
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References: <20180219092245.26404-1-richard@nod.at> <CAK7LNASLQnWFO+qA94ifX8Gv1vMxGE-BOEhh1x2P-_mMUWRbAw@mail.gmail.com>
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Am Dienstag, 20. Februar 2018, 16:18:11 CET schrieb Masahiro Yamada:
> 2018-02-19 18:22 GMT+09:00 Richard Weinberger <richard@nod.at>:
> > Don't source the kernel config file in shell scripts.
> > The config file is not a shell script and often imported from untrusted
> > sources.
> > What could possible go wrong? ;-)
> 
> Please enumerate your real problems.

Build a kernel where the .config contains something like:
CONFIG_CMDLINE_BOOL=y
CONFIG_CMDLINE="`echo hello > world`"

I'll send a v3 because I forgot to convert one function in the shell script to 
the new bash array. kbuild bot FTW. :-)

Thanks,
//richard