Messages in this thread | | | Date | Tue, 12 Feb 2008 14:50:48 +0200 | From | Riku Voipio <> | Subject | Re: futex local DoS on most architectures |
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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/futex.h > > Pointed out by: Mikael Pettersson, Riku Voipio and Adrian Bunk > Original credits for finding this issue belong to Lennert Buytenhek. > 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 for me and kernel no longer deadlocks with this patch!
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