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Date: Mon, 01 Aug 2016 22:37:24 +1000
From: Michael Ellerman <mpe@...erman.id.au>
To: Kees Cook <keescook@...omium.org>, kernel-hardening@...ts.openwall.com
Cc: Kees Cook <keescook@...omium.org>, Arnd Bergmann <arnd@...db.de>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, Andrew Morton <akpm@...ux-foundation.org>, "David S. Miller" <davem@...emloft.net>, Mauro Carvalho Chehab <mchehab@....samsung.com>, Jiri Slaby <jslaby@...e.cz>, Guenter Roeck <linux@...ck-us.net>, linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org <linuxppc-dev@...ts.ozlabs.org>, Anton Blanchard <anton@...ba.org>
Subject: Linker segfault on powerpc when CONFIG_LKDTM=y (was Re: [PATCH 3/5] lkdtm: add function for testing .rodata section)
Kees Cook <keescook@...omium.org> writes:
> This adds a function that lives in the .rodata section. The section
> flags are corrected using objcopy since there is no way with gcc to
> declare section flags in an architecture-agnostic way.
>
> Signed-off-by: Kees Cook <keescook@...omium.org>
> ---
> drivers/misc/Makefile | 7 +++++++
> drivers/misc/lkdtm.h | 6 ++++++
> drivers/misc/lkdtm_core.c | 24 +++++++++++++++++-------
> drivers/misc/lkdtm_rodata.c | 10 ++++++++++
> 4 files changed, 40 insertions(+), 7 deletions(-)
> create mode 100644 drivers/misc/lkdtm.h
> create mode 100644 drivers/misc/lkdtm_rodata.c
This is blowing up my linker :(
scripts/link-vmlinux.sh: line 52: 36260 Segmentation fault (core dumped) ${LD} ${LDFLAGS} ${LDFLAGS_vmlinux} -o ${2} -T ${lds} ${KBUILD_VMLINUX_INIT} --start-group ${KBUILD_VMLINUX_MAIN} --end-group ${1}
Haven't had a chance to debug it further.
cheers
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