Re: futex local DoS on most architectures

2008-02-14 Thread Thomas Gleixner
On Thu, 14 Feb 2008, Andrew Morton wrote: > > This patch is intended for easy backporting and needs to be cleaned up > > further for current mainline. > > So... > > I queued up this version with a cc to stable under the assumption that this > is the patch which should be applied to 2.6.x.y, but t

Re: futex local DoS on most architectures

2008-02-14 Thread Andrew Morton
On Mon, 11 Feb 2008 14:59:34 +0100 (CET) Thomas Gleixner <[EMAIL PROTECTED]> wrote: > On Mon, 11 Feb 2008, Adrian Bunk wrote: > > > The issue described in [1] is still present and unfixed (and even the > > fix there wasn't complete since it didn't cover SMP). > > Damn, this slipped through my a

Re: futex local DoS on most architectures

2008-02-12 Thread Riku Voipio
Thomas Gleixner wrote: We have to disable the complete PI/robust functionality for those archs, which do not implement futex_atomic_cmpxchg_inatomic(). The code in question relies on a valid implementation and does not expect -ENOSYS, which is returned by the stub implementation in asm-generic/fu

Re: futex local DoS on most architectures

2008-02-11 Thread Lennert Buytenhek
On Mon, Feb 11, 2008 at 02:59:34PM +0100, Thomas Gleixner wrote: > Subject: futex: disable PI/robust on archs w/o valid implementation > From: Thomas Gleixner <[EMAIL PROTECTED]> > > We have to disable the complete PI/robust functionality for those > archs, which do not implement futex_atomic_cmp

Re: futex local DoS on most architectures

2008-02-11 Thread Thomas Gleixner
On Mon, 11 Feb 2008, Adrian Bunk wrote: > The issue described in [1] is still present and unfixed (and even the > fix there wasn't complete since it didn't cover SMP). Damn, this slipped through my attention completely. Hotfix (which can be easily backported) below. > Thanks to Riku Voipio for

Re: futex local DoS on most architectures

2008-02-11 Thread Mikael Pettersson
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

futex local DoS on most architectures

2008-02-11 Thread Adrian Bunk
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 -- To unsubscribe from this list: send the line "unsubscribe lin