From: Blaise Gassend <blaise@willowgarage.com>
To: linux-kernel@vger.kernel.org
Subject: ERESTARTSYS escaping from sem_wait with Preempt-RT
Date: Sat, 10 Oct 2009 09:40:09 -0700 [thread overview]
Message-ID: <1255192809.6385.120.camel@doodleydee> (raw)
In-Reply-To: <1255165747.6385.117.camel@doodleydee>
Apologies, the message below is for Preempt-RT, not RTLinux. The
original message with full details can be found here:
http://lkml.org/lkml/2009/10/10/36
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.
next prev parent reply other threads:[~2009-10-10 16:40 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-10 9:09 ERESTARTSYS escaping from sem_wait with RTLinux patch Blaise Gassend
2009-10-10 16:40 ` Blaise Gassend [this message]
2009-10-10 17:59 ` Thomas Gleixner
2009-10-10 19:08 ` Jeremy Leibs
2009-10-11 2:07 ` Jeremy Leibs
2009-10-11 5:48 ` Jeremy Leibs
2009-10-12 14:16 ` Darren Hart
[not found] ` <1255384010.10236.123.camel@lts.willowgarage.com>
[not found] ` <4AD3BD57.6080703@us.ibm.com>
[not found] ` <4AD3D6AE.2050609@us.ibm.com>
[not found] ` <4AD3FFB0.5030405@us.ibm.com>
2009-10-13 4:54 ` Darren Hart
2009-10-13 8:56 ` Blaise Gassend
2009-10-13 15:13 ` Darren Hart
2009-10-13 18:45 ` Thomas Gleixner
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