Message-ID: <559A33DD.3060504@internode.on.net>
Date: Mon, 06 Jul 2015 17:23:01 +0930
From: Arthur Marsh <arthur.marsh@internode.on.net>
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To: Peter Zijlstra <peterz@infradead.org>
CC: linux-kernel@vger.kernel.org, Rusty Russell <rusty@rustcorp.com.au>,
        Steven Rostedt <rostedt@goodmis.org>,
        Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
        Oleg Nesterov <oleg@redhat.com>,
        "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Subject: Re: lock-up with module: Optimize __module_address() using a latched
 RB-tree
References: <55997889.5020101@internode.on.net> <20150706071911.GT3644@twins.programming.kicks-ass.net>
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Apologies if a duplicate, mailing list did not like the large .config.

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 is at 
http://www.users.on.net/~arthur.marsh/config-4.1.0-rc5+


Arthur.
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