Re: [PATCH 1/3] Increase lockdep limits: MAX_STACK_TRACE_ENTRIES

From: Peter Zijlstra
Date: Tue Jul 07 2009 - 11:34:17 EST


On Tue, 2009-07-07 at 16:25 +0100, Joao Correia wrote:
> (Applies to current Linus tree, as of 2.6.31-rc2)
>
> As it stands now, the limit is too low and is being hit by false
> positives. Increasing its value will allow for more room to work with.
>
> This was suggested by Ingo Molnar
> (http://article.gmane.org/gmane.linux.kernel/852005) but never
> submitted as a patch, to the best of my knowledge.

Right, we found a bug in the dma-debug code that generated tons of
classes where only 1 was needed, which in turn generated tons of chains
and stack entries.

But that got merged, but you're seeing more of this?

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