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From: "Demetrios Obenour" <demetriobenour@gmail.com>
To: "'Daniel Colascione'" <dancol@dancol.org>,
	"'Paul Eggert'" <eggert@cs.ucla.edu>,
	"'Stefan Monnier'" <monnier@iro.umontreal.ca>
Cc: 18410@debbugs.gnu.org
Subject: bug#18410: Use SAFE_ALLOCA etc. to avoid unbounded stack allocation.
Date: Sun, 7 Sep 2014 23:20:47 -0400	[thread overview]
Message-ID: <022901cfcb13$e2785db0$a7691910$@gmail.com> (raw)
In-Reply-To: <540D2054.4000909@dancol.org>

That would work also, and is probably the best approach.

-----Original Message-----
From: Daniel Colascione [mailto:dancol@dancol.org] 
Sent: Sunday, September 7, 2014 11:20 PM
To: Demetrios Obenour; 'Paul Eggert'; 'Stefan Monnier'
Cc: 18410@debbugs.gnu.org
Subject: Re: bug#18410: Use SAFE_ALLOCA etc. to avoid unbounded stack allocation.

On 09/07/2014 08:17 PM, Demetrios Obenour wrote:
> This is crucial. Otherwise, a security vulnerability could result.
> 
> MAX_ALLOCA should not be larger than the page size for the target architecture.

You could just touch every page inside a large alloca.







  reply	other threads:[~2014-09-08  3:20 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-09-05  6:08 bug#18410: Use SAFE_ALLOCA etc. to avoid unbounded stack allocation Paul Eggert
2014-09-05  8:45 ` Dmitry Antipov
2014-09-05 15:01   ` Paul Eggert
2014-09-05 15:44   ` Stefan Monnier
2014-09-05 16:04     ` Andreas Schwab
2014-09-05 17:22       ` Stefan Monnier
2014-09-05  8:59 ` Dmitry Antipov
2014-09-05 15:03   ` Paul Eggert
2014-09-07  7:20 ` Paul Eggert
2014-09-07 17:09   ` Eli Zaretskii
2014-09-07 20:33     ` Paul Eggert
2014-09-08  2:22       ` Stefan Monnier
2014-09-08  2:35         ` Eli Zaretskii
2014-09-08  2:43           ` Stefan Monnier
2014-09-08  2:38         ` Paul Eggert
2014-09-08  3:17           ` Demetrios Obenour
2014-09-08  3:19             ` Daniel Colascione
2014-09-08  3:20               ` Demetrios Obenour [this message]
2014-09-08  7:26           ` Dmitry Antipov
2014-09-08  2:36       ` Eli Zaretskii
2014-09-08 12:48         ` Stefan Monnier
2014-09-09 13:17           ` Eli Zaretskii
2014-09-09 13:49             ` Stefan Monnier

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