linux-kernel - [Regression] sshd hangs on close

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Message-ID: <g9b39n$4et$1@ger.gmane.org>
Date:	Sat, 30 Aug 2008 09:18:47 +0000 (UTC)
From:	Matthias Urlichs <matthias@...ichs.de>
To:	linux-kernel@...r.kernel.org
Subject:  [Regression] sshd hangs on close

"top" sees multiple instances of:

 6008 root      20 3184 D    0   0:00.06 flush_cpu sshd: root@.../13            

This is 2.6.27rc5, preemption and tickless turned on, on a 4-CPU machine.
(OK, two hyperthreaded ones :-P) strace() shows that this happens on the
last close of its /dev/ptmx file descriptor, which hangs.

I'll do a bisect early next week unless somebody else identifies a likely
suspect.

-- 
Matthias Urlichs

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