Messages in this thread | | | Date | Mon, 11 Feb 2008 15:16:12 +0100 | From | Lennert Buytenhek <> | Subject | Re: futex local DoS on most architectures |
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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 <tglx@linutronix.de> > > 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/futex.h > > Pointed out by: Mikael Pettersson, Riku Voipio and Adrian Bunk
FWIW, I reported it originally.
> This patch is intended for easy backporting and needs to be cleaned up > further for current mainline. > > Signed-off-by: Thomas Gleixner <tglx@linutronix.de> > Acked-by: Ingo Molnar <mingo@elte.hu>
Looks good to me. Thanks.
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