From owner-freebsd-hackers@FreeBSD.ORG  Fri May 30 09:04:48 2003
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Date: Fri, 30 May 2003 19:07:23 +0300
From: Enache Adrian <enache@rdslink.ro>
To: Ruslan Ermilov <ru@FreeBSD.org>
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References: <20030530143541.GB42349@sunbay.com>
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cc: Daniel Eischen <deischen@FreeBSD.org>
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cc: Sergey Starosek <star@sunbay.com>
cc: Yaroslav Levchenko <yarick@sunbay.com>
Subject: Re: libc_r: threaded application could stuck in accept(2)
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On Fri, May 30, 2003 at 05:35:41PM +0300, Ruslan Ermilov wrote:
> We had a bug in our threaded application that would mistakenly close
> the descriptor 0, and this triggers a bug in libc_r which I will try
> to describe below.
...
> Some important notes: this bug is only applicable to descriptors
> 0 - 2 (stdio set), and might have something to do with the code
> in uthread_fd.c.  If you remove two lines that free the descriptor
> 0 in the attached test case, the bug won't manifest itself.

please have a look at

http://www.freebsd.org/cgi/query-pr.cgi?pr=51535

Regards,
Adi