Peter Zijlstra wrote on 06/07/15 16:49:
> On Mon, Jul 06, 2015 at 04:03:45AM +0930, Arthur Marsh wrote:
>> I am happy to supply further details and run further tests.
>
> A .config and gcc version might be a good start. I'll see if 32bit
> userspace in KVM can reproduce.
>

Thanks, details are:

gcc version 5.1.1 20150616 (Debian 5.1.1-11)

(compiled on x86-64 using:
CONCURRENCY_LEVEL=4 DEB_HOST_ARCH=i386 \
MAKEFLAGS="CC=gcc-5 LD=ld.gold KCFLAGS=-march=athlon64" make-kpkg \
--initrd --config menuconfig --arch i386 \
--cross-compile - linux-image

)

.config from a test build near the problem commit attached.

Arthur.