linux-kernel - Does anyone know when FUTEX

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Message-id: <fb82d1d46d8f.53d8186c@langara.bc.ca>
Date:	Tue, 29 Jul 2014 21:55:56 +0000 (GMT)
From:	Steven Stewart-Gallus <sstewartgallus00@...angara.bc.ca>
To:	linux-kernel@...r.kernel.org
Cc:	linux-api@...r.kernel.org, mtk@...7.org
Subject: Does anyone know when FUTEX_WAIT can fail with EAGAIN?

Hello,

I'm trying to debug a hangup where my program loops with FUTEX_WAIT (actually
FUTEX_WAIT_PRIVATE but same thing)  endlessly erring out with EAGAIN. I would
like to know if anyone on the mailing list knows when FUTEX_WAIT can fail with
EAGAIN.

Some info for people who are interested in what I'm working on.

I'm working on sand boxing my program at gitorious.org/linted with namespaces
and chroot.

The error only appeared after changing unshare then fork code into a direct
clone call.

> | uname -a
> Linux alonzo 3.13.0-24-generic #1trisquel1 SMP Tue May 13 15:17:50 UTC 2014
x86_64 x86_64 x86_64 GNU/Linux

Thank you,
Steven Stewart-Gallus
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