linux-kernel - Re: Strange intermittent EIO error when writing to stdout since v3.8.0

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Message-ID: <loom.20130612T001313-422@post.gmane.org>
Date:	Tue, 11 Jun 2013 22:14:51 +0000 (UTC)
From:	Orion Poplawski <orion@...a.nwra.com>
To:	linux-kernel@...r.kernel.org
Subject: Re: Strange intermittent EIO error when writing to stdout since v3.8.0

Peter Hurley <peter <at> hurleysoftware.com> writes:
> Based on the other reports from Mikael and David, I suspect this problem
> may have to do with my commit 699390354da6c258b65bf8fa79cfd5feaede50b6:
> 
>    pty: Ignore slave pty close() if never successfully opened
> 
> This commit poisons the pty under certain error conditions that may
> occur from parallel open()s (or parallel close() with pending write()).
> 
> It's unclear to me which error condition is triggered and how user-space
> got an open file descriptor but that seems the most likely. Is the problem
> reproducible enough that a debug patch would likely trigger?

I get this pretty frequently on my machine with rpmbuild -ba 2>&1 | tee. 
I'd be happy to help to debug.


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