linux-kernel - Re: [PATCH v3] lockdep: Make MAX_STACK_TRACE

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <1271849823.1776.87.camel@laptop>
Date:	Wed, 21 Apr 2010 13:37:03 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	John Kacur <jkacur@...hat.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...e.hu>,
	linux-rt-users@...r.kernel.org,
	Thomas Gleixner <tglx@...utronix.de>,
	Clark Williams <williams@...hat.com>,
	"Luis Claudio R. Goncalves" <lgoncalv@...hat.com>
Subject: Re: [PATCH v3] lockdep: Make MAX_STACK_TRACE_ENTRIES configurable.

On Wed, 2010-04-21 at 13:12 +0200, John Kacur wrote:
> 
> Certain configurations that have LOCKDEP turned on, run into the limit
> where the MAX_STACK_TRACE_ENTRIES are too small. Rather than simply
> turning of the locking correctness validator let the user configure this
> value to something reasonable for their system.

I'm not sure its worth having a CONFIG_ value for this, that'll just be
yet another random value nobody knows what to do with.

Do you actually have a machine that reproduces this? Can you see how
many classes, avg stacktraces per class and the avg entries per
stacktrace there are?

Also, is there's lots of classes, are there many with a similar name?

That is, is it a valid depletion or is there something wonkey with those
setups?

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/