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To: linux-kernel@vger.kernel.org
From: Orion Poplawski <orion@cora.nwra.com>
Subject: Re: Strange intermittent EIO error when writing to stdout since v3.8.0
Date: Tue, 11 Jun 2013 22:14:51 +0000 (UTC)
Message-ID: <loom.20130612T001313-422@post.gmane.org>
References: <20130606115417.GA520@x4> <51B09A26.3080603@hurleysoftware.com> <20130606143750.GB520@x4> <51B1FEB1.8040103@hurleysoftware.com>
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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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