linux-kernel - Re: [tip:tracing/urgent] tracing: Fix too large stack usage in do_one

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: <alpine.LFD.2.01.0908211217411.3158@localhost.localdomain>
Date:	Fri, 21 Aug 2009 12:19:31 -0700 (PDT)
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Ingo Molnar <mingo@...e.hu>
cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-tip-commits@...r.kernel.org,
	Arjan van de Ven <arjan@...radead.org>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Dave Jones <davej@...hat.com>,
	Kyle McMartin <kyle@...artin.ca>, Greg KH <gregkh@...e.de>,
	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...hat.com,
	catalin.marinas@....com, a.p.zijlstra@...llo.nl,
	jens.axboe@...cle.com, fweisbec@...il.com, stable@...nel.org,
	srostedt@...hat.com, tglx@...utronix.de
Subject: Re: [tip:tracing/urgent] tracing: Fix too large stack usage in
 do_one_initcall()



On Fri, 21 Aug 2009, Linus Torvalds wrote:
> 
> And we probably should really complain more actively about big stack 
> frames. We have that CONFIG_FRAME_WARN thing, but it's set very high. 

Hmm. Setting it down to 256 on x86-64 does cause a fair number of 
warnings even for something like my personal build (that avoids all the 
crazy drivers etc), but it looks "manageable" - ie something where a 
kernel developer should try it, and fix all the ones that they maintain.

And if you don't get any warnings in your area, try lowering it to 100 or 
something.

		Linus
--
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/