linux-kernel - Re: [PATCH v3 2/2] powerpc/64: add stack protector support

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Date:   Wed, 26 Sep 2018 04:28:07 -0500
From:   Segher Boessenkool <segher@...nel.crashing.org>
To:     Christophe LEROY <christophe.leroy@....fr>
Cc:     Russell Currey <ruscur@...sell.cc>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        Andrew Donnellan <andrew.donnellan@....ibm.com>,
        linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 2/2] powerpc/64: add stack protector support

On Wed, Sep 26, 2018 at 09:58:30AM +0200, Christophe LEROY wrote:
> Segher, any idea about this problem ?

> >>arch/powerpc/platforms/powermac/bootx_init.o: In function `bootx_printf':
> >>/var/lib/jenkins-slave/workspace/snowpatch/snowpatch-linux-
> >>sparse/linux/arch/powerpc/platforms/powermac/bootx_init.c:88:
> >>undefined reference to `__stack_chk_fail_local'

Are you building as PIC?  Are you linking libssp_nonshared.a?  Why not?

:-)


Segher