Message-ID: <559BF71E.5070906@internode.on.net>
Date: Wed, 08 Jul 2015 01:28:22 +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> <20150706100447.GX3644@twins.programming.kicks-ass.net> <559A545A.80508@internode.on.net> <20150706103246.GY3644@twins.programming.kicks-ass.net> <559B63A2.4030601@internode.on.net> <20150707072951.GM3644@twins.programming.kicks-ass.net>
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Peter Zijlstra wrote on 07/07/15 16:59:

> Do you have a serial cable between those machines? serial console output
> will allow capturing more complete traces than these pictures can and
> might also aid in capturing some extra debug info.
>
> In any case, I'll go try and build some debug code.
>

I do have eia-232 serial ports on both machines and a serial cable but 
would need to hunt down a null modem adapter or cable and a how-to on 
booting with a serial console - I'll ask around in the next 24 hours.

Arthur.
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