ARM: pxa/corgi: armv5te kernel 4.12 fails to decompress compiled with gcc7

[Robert Jarzmik]

Andrea Adami <andrea.adami at gmail.com> writes:

> Hello,

Hi Andrea,

I have the same report on userspace side on buildroot from Petr [1], which
triggers endless segfaults in userspace (init) with gcc7 while everything is
fine with gcc6. I have confirmation on my test farm the problem happens as well.

Since debugging in userspace is far easier, I would suggest attacking the debug
with Petr on userspace side, and once sorted out, come back to kernel side.

Cheers.

--
Robert

[1] Mail from Petr
From: Petr Cvek <petrcvekcz at gmail.com>
Subject: cross-gcc
To: robert.jarzmik at free.fr
Date: Wed, 12 Jul 2017 02:37:35 +0200 (1 week, 1 day, 6 hours ago)
Message-ID: <ea45c82f-35a8-a908-d199-c72c0c801340 at gmail.com>
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.2.1

Hi,

do you still have a PXA27x board? I'm trying to build a rootfs with a new GCC
(7.1 from crosstool-ng snapshot a few days ago, buildroot same way) and it keeps
segfaulting (busybox, sshd, udevd, Xorg). Do you have the same problem? (seems
it does not care for xscale/iwmmxt neither O1/O2/Os, maybe on O0).

The GCC 6.x was fine and if i will need to make a bug report I think I will need
confirmation.