Re: segctord problem

[Eric A <eric225125-/E1597aS9LQAvxtiuMwx3w@public.gmane.org>]

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________________________________
From: Ryusuke Konishi <ryusuke-sG5X7nlA6pw@public.gmane.org>
To: users-JrjvKiOkagjYtjvyW6yDsg@public.gmane.org; eric225125-/E1597aS9LQAvxtiuMwx3w@public.gmane.org
Sent: Tuesday, August 11, 2009 11:28:45 PM
Subject: Re: [NILFS users] segctord problem

Hi!
On Tue, 11 Aug 2009 18:28:05 -0700 (PDT), Eric A wrote:
> I'm using the latest vanilla kernel (2.6.31-rc5-git7).  My distro is Gentoo with nilfs-utils-2.0.14.
> 
> Eric
> 
> 
> 
> ________________________________
> From: Jiro SEKIBA <jir-hfpbi5WX9J54Eiagz67IpQ@public.gmane.org>
> To: NILFS Users mailing list <users-JrjvKiOkagjYtjvyW6yDsg@public.gmane.org>
> Sent: Tuesday, August 11, 2009 8:46:45 PM
> Subject: Re: [NILFS users] segctord problem
> 
> Hi,
> 
> > I have been using nilfs as my rootfs for several weeks now and have been
> > experiencing random problems.  X programs will be become unresponsive and top
> > will show that segctord is using ~50%hi (100% of one core).
> 
> Which version of kernel and distro are you using?

According to your log, preemption count of the log-writer thread goes
wrong; it must be equal or greater than 0, but your log shows it
became -1 (0xffffffff) maybe due to some kind of bug in nilfs.

> Aug 11 17:00:59 gentoo klogd: BUG: scheduling while atomic: segctord/1312/0xffffffff

I'm looking at this problem, but I don't have no clue why this
happened.

Is it reproducible after reboot?

Thanks,
Ryusuke Konishi
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