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SubjectERESTARTSYS escaping from sem_wait with Preempt-RT
Apologies, the message below is for Preempt-RT, not RTLinux. The
original message with full details can be found here:

On Sat, 2009-10-10 at 02:09 -0700, Blaise Gassend wrote:
> The attached python program, in which 500 threads spin with microsecond
> sleeps, crashes with a "sem_wait: Unknown error 512" (conditions
> described below). This appears to be due to an ERESTARTSYS generated
> from futex_wait escaping to user space (libc). My understanding is that
> this should never happen and I am trying to track down what is going on.

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