From: Andrew Morton <akpm@linux-foundation.org>
To: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: Matthias Urlichs <matthias@urlichs.de>,
linux-kernel@vger.kernel.org, Ingo Molnar <mingo@elte.hu>,
Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [Regression] sshd hangs on close
Date: Sat, 30 Aug 2008 14:14:31 -0700 [thread overview]
Message-ID: <20080830141431.7bb34048.akpm@linux-foundation.org> (raw)
In-Reply-To: <200808302228.58255.rjw@sisk.pl>
On Sat, 30 Aug 2008 22:28:57 +0200 "Rafael J. Wysocki" <rjw@sisk.pl> wrote:
> [Adding CCs]
>
> On Saturday, 30 of August 2008, Matthias Urlichs wrote:
> > "top" sees multiple instances of:
> >
> > 6008 root 20 3184 D 0 0:00.06 flush_cpu sshd: root@pts/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.
> >
Please do `echo w > /proc/sysrq-trigger', send the resulting trace.
prev parent reply other threads:[~2008-08-30 21:15 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-08-30 9:18 [Regression] sshd hangs on close Matthias Urlichs
2008-08-30 20:28 ` Rafael J. Wysocki
2008-08-30 21:14 ` Andrew Morton [this message]
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