Re: s390x: kernel BUG at fs/ext4/inode.c:1591! (powerpc too!)

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On Tue, Apr 02, 2013 at 01:47:44PM +0400, Dmitry Monakhov wrote:
> On Mon, 1 Apr 2013 23:15:07 -0700 (PDT), Christian Kujau <lists@xxxxxxxxxxxxxxx> wrote:
> > Hi,
> > 
> > my machine (PowerBook G4) just crashed and the only thing netconsole was 
> > able to transmit was:
> > 
> >   ------------[ cut here ]------------
> >   kernel BUG at /usr/local/src/linux-git/fs/ext4/inode.c:1591!
> > 
> > But (unfortunately) nothing more. I have no clear way to reproduce this, 
> > but I have some kind of a (longish) backstory to this, see below. The 
> > system is running 3.9-rc4, its .config and dmesg:
> > 
> >   http://nerdbynature.de/bits/3.9.0-rc1/config.gz (oldconfig'ed to -rc4)
> >   http://nerdbynature.de/bits/3.9.0-rc1/dmesg.txt (w/o the calltrace at the end)
> > 
> > 
> > I was having trouble all day downloading a file via bittorrent to an 
> > ext4 filesystem.

It looks like the same problem [1].  But it should have been fixed in
3.9-rc4.  Frankly, I think the root cause is es_cache.  Sorry, it hasn't
been well tested.

1. http://www.serverphorums.com/read.php?12,667656

Could you please revert your tree to this commit (3a225670), and try
again. I want to make sure that the regression won't be fixed until now
or it is introduced after this commit.

Thanks in advance,
                                                - Zheng
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