Subject: Re: kern/32682: netbsd-3 ptyfs intermittent failure with Matlab
To: None <kern-bug-people@netbsd.org, gnats-admin@netbsd.org,>
From: Hauke Fath <hf@spg.tu-darmstadt.de>
List: netbsd-bugs
Date: 07/25/2006 12:30:03
The following reply was made to PR kern/32682; it has been noted by GNATS.

From: Hauke Fath <hf@spg.tu-darmstadt.de>
To: christos@zoulas.com (Christos Zoulas)
Cc: Hauke Fath <hf@spg.tu-darmstadt.de>, gnats-bugs@NetBSD.org,
	kern-bug-people@NetBSD.org, gnats-admin@NetBSD.org,
	netbsd-bugs@NetBSD.org
Subject: Re: kern/32682: netbsd-3 ptyfs intermittent failure with Matlab
Date: Tue, 25 Jul 2006 14:26:10 +0200

 Am 17.07.2006 um 10:58 Uhr -0400 schrieb Christos Zoulas:
 >| But I still see matlab failing to open a /dev/pts/? every now and
 >| then, although the /dev/ptmx && /dev/pts/? way should be the only way
 >| to get a pty on the machine now, so no concurrent access, right?|
 
 Yet another data point: When another user logs in, with or without 
 running Matlab, this frequently "fixes" the pty problem for the first 
 user.
 
 >I have a theory. The pty returned by ptmx is not being marked as in
 >use immediately, so it can be potentially returned twice to two different
 >processes. I will check.
 
 Did you get any further with that theory?
 
 	hauke
 
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