Subject: Re: "BUG: MAX_STACK_TRACE_ENTRIES too low!" - reason for concern?
From: Peter Zijlstra <peterz@infradead.org>
To: Stefan Richter <stefanr@s5r6.in-berlin.de>
Cc: Ingo Molnar <mingo@redhat.com>, linux-kernel@vger.kernel.org
In-Reply-To: <tkrat.7ea353e737215fa2@s5r6.in-berlin.de>
References: <tkrat.7ea353e737215fa2@s5r6.in-berlin.de>
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Date: Sun, 14 Dec 2008 13:41:25 +0100
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On Sun, 2008-12-14 at 02:38 +0100, Stefan Richter wrote:
> Is the following anything that anybody should do something about?
> 
> # unloading IEEE 1394 drivers (as slightly before linux1394-2.6.git)
> 
> Dec 14 01:23:24 stein ieee1394: Node removed: ID:BUS[3-00:1023]  GUID[00d0f5200800613d]
> Dec 14 01:23:24 stein ieee1394: Node removed: ID:BUS[2-00:1023]  GUID[0010dc5600fed2d4]
> Dec 14 01:23:24 stein ieee1394: Node removed: ID:BUS[1-01:1023]  GUID[0030bd051800064f]
> Dec 14 01:23:24 stein ieee1394: Node removed: ID:BUS[1-00:1023]  GUID[0012870035000f94]
> Dec 14 01:23:24 stein ieee1394: Node removed: ID:BUS[0-08:1023]  GUID[080028560000319b]
> 
> # reloading IEEE 1394 drivers (as in linux1394-2.6.git)
> 
> Dec 14 01:23:29 stein BUG: MAX_STACK_TRACE_ENTRIES too low!

lockdep resource allocation is pretty simple wrt to modules, it will not
re-use anything, therefore cycling modules will let it run out of its
resources pretty quickly.

I suppose one could go add all kinds of smart and complicate the whole
thing, but I'm not sure its worth it.

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