[Dovecot] Strange dmesg messages

Raphael Bittencourt S. Costa raphael.costa at alog.com.br
Thu Apr 3 22:55:47 EEST 2008


The erro stops when I uncomment 

mail_max_userip_connections = 10

does it make any sence?

On Thu, 2008-04-03 at 16:34 -0300, Raphael Bittencourt S. Costa wrote:

> I moved the maildir location from Hitachi's storage to local sas disk
> and got the same erro using imaptest. Debug doesn't show any usable
> information. :-(
> 
> Any ideas? 
> 
> 
> 
> On Thu, 2008-04-03 at 19:01 +0300, Uldis Pakuls wrote: 
> 
> > Raphael Bittencourt S. Costa wrote:
> > > On Thu, 2008-04-03 at 09:25 +0300, Uldis Pakuls wrote:
> > >
> > >   
> > >> Raphael Bittencourt S. Costa wrote:
> > >>     
> > >>> Guys,
> > >>>
> > >>> I'm getting strange messages on my new server with dovecot-1.1rc4 + lda
> > >>> + sieve + ldap + postfix + suse10.  This server is in production since
> > >>> monday, and worked fine until today. The only thing I had changed was
> > >>> dovecot from 1.1rc3 to 1.1rc4. I already enabled mail_debug, but I got
> > >>> any erros after that.
> > >>>
> > >>> Does anyone have any idea of what is happening?
> > >>>
> > >>> Unable to handle kernel NULL pointer dereference at 0000000000000020
> > >>> RIP:
> > >>> <ffffffff8019df99>{sys_inotify_rm_watch+280}
> > >>>   
> > >>>       
> > >> It is a kernel level crash  in function sys_inotify_rm_watch.; 
> > >>
> > >> */*/fs/inotify_user.c - inotify support for userspace/*/*
> > >>
> > >>  I don't think its dovecot's fault. Have you installed any vendor 
> > >> specific/propertary storage drivers?
> > >>
> > >>     
> > >
> > > Just using Hitachi's HDLM for multipath and failover.
> > >
> > >   
> > It's looks like problem with storage drivers (kernel modules) ; crash
> > after attempt to free inotify data.
> > As workaroud I may sugest to use difrenet notify method. (configure
> > option "--with-notify=")
> > 
> > Uldis
> > 
> > p.s.
> > I have 9 production servers running different versions of SuSE linux and
> > never have such a problem.
> > Something like this I got only once: after adding LSI pseudo raid
> > adapter useing LSI propertary drivers./**/*/*/
> > 
> > /*/*

Atenciosamente,










Raphael Bittencourt S. Costa
Engenharia
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