linux-kernel - Re: lockdep question (was Re: IPoIB caused a kernel: BUG: soft lockup detected on CPU#0!)

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Date:	Sun, 11 Mar 2007 20:19:20 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	"Michael S. Tsirkin" <mst@...lanox.co.il>
Cc:	Roland Dreier <roland.list@...il.com>,
	Roland Dreier <rdreier@...co.com>,
	general@...ts.openfabrics.org,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: lockdep question (was Re: IPoIB caused a kernel: BUG: soft lockup detected on CPU#0!)


* Michael S. Tsirkin <mst@...lanox.co.il> wrote:

> After adding some printks, I started getting these:
> 
> [  597.036720] BUG: MAX_STACK_TRACE_ENTRIES too low!

this should go away if you double the size of MAX_STACK_TRACE_ENTRIES in 
kernel/lockdep_internals.h. (keep it a power of two) If it doesnt go 
away then it might signal some sort of leak.

	Ingo
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