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From: Mikael Pettersson <mikpe@it.uu.se>
To: Adrian Bunk <adrian.bunk@movial.fi>
Cc: Ingo Molnar <mingo@elte.hu>, Thomas Gleixner <tglx@linutronix.de>,
	linux-kernel@vger.kernel.org, Riku Voipio <riku.voipio@movial.fi>,
	Mikael Pettersson <mikpe@it.uu.se>,
	Lennert Buytenhek <buytenh@wantstofly.org>,
	Rusty Russell <rusty@rustcorp.com.au>
Subject: Re: futex local DoS on most architectures
Date: Mon, 11 Feb 2008 14:56:36 +0100	[thread overview]
Message-ID: <18352.21524.186194.426982@harpo.it.uu.se> (raw)
In-Reply-To: <20080211130700.GF27537@movial.fi>

Adrian Bunk writes:
 > The issue described in [1] is still present and unfixed (and even the 
 > fix there wasn't complete since it didn't cover SMP).
 > 
 > Thanks to Riku Voipio for noting that it is still unfixed.
 > 
 > cu
 > Adrian
 > 
 > [1] http://lkml.org/lkml/2007/8/1/474

I think calling it a local DoS may make people take it
less seriously.

The problem is not related to attacks or malice.
It's NORMAL futex usage on the affected architectures
that's broken and will throw the kernel into a loop.

/Mikael

  reply	other threads:[~2008-02-11 13:57 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-02-11 13:07 Adrian Bunk
2008-02-11 13:56 ` Mikael Pettersson [this message]
2008-02-11 13:59 ` Thomas Gleixner
2008-02-11 14:16   ` Lennert Buytenhek
2008-02-12 12:50   ` Riku Voipio
2008-02-14 21:46   ` Andrew Morton
2008-02-15  1:19     ` Thomas Gleixner
2008-02-15  1:23       ` [PATCH 1/2] futex: fix init order Thomas Gleixner
2008-02-15  1:36       ` [PATCH 2/2] futex: runtime enable pi and robust functionality Thomas Gleixner

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