[CentOS] cups causing segfault

Thu May 8 16:31:42 UTC 2008

Gregory P. Ennis wrote:
> On Thu, 2008-05-08 at 10:46 -0400, Ross S. W. Walker wrote:
> > Gregory P. Ennis wrote:
> > > 
> > > On Wed, 2008-05-07 at 12:00 -0500, Gregory P. Ennis wrote:
> > > > Everyone,
> > > > 
> > > > I have a new installation of Centos 5.1 that I am using on a gateway
> > > > server that also has dhcp, named servers.  I also have cups set up to
> > > > function as a print server, and sendmail is being used as a relay to our
> > > > mail server.  yum-cron appears to be updating everything daily as
> > > > desired.
> > > > 
> > > > This Centos 5.1 gateway was created to replace a Fedora Core 5 system
> > > > with the same functions.  When I set up cups I copied the FC5
> > > > subdirectory into the Centos 5.1 system.  Everything appears to work as
> > > > expected.
> > > > 
> > > > For some reason I am having sendmail crator without giving me a notice
> > > > in the logs as far as I can determine.  However, when I looked at the
> > > > messages logs I found it filled with many entries in the form of :
> > > > 
> > > > kernel: ipp[24519]: segfault at 0000000000000000 rip 00002aaaabf2abc0
> > > > rsp 00007fff25495348 error 4
> > > > 
> > > > I've done a google search and there appeared to be a problem with
> > > > doubled printer entries in the printer.conf causing the log entry, but
> > > > after checking my printer.conf file everything appears to be ok.  This
> > > > file also worked on FC5 without a problem.
> > > > 
> > > > I am not sure if the cups problem is related to the sendmail problem.
> > > > 
> > > > Any ideas?
> > > > 
> > > > Greg Ennis
> > > > 
> > > 
> > > I have tried several things in the past 48 hours to try to understand
> > > what is happening.  The only thing I have done that seems to have made a
> > > difference is that I have switched 2.6.18-53.1.14.el5xen to
> > > 2.6.18-53.1.14.el5.  
> > > 
> > > I am still getting the following log entries :
> > > 
> > > May  8 08:23:14 DeGw kernel: ipp[11677]: segfault at 0000000000000000
> > > rip 00002aaaabf2abc0 rsp 00007fff7b7ff6b8 error 4
> > > May  8 08:28:26 DeGw kernel: ipp[12925]: segfault at 0000000000000000
> > > rip 00002aaaabf2abc0 rsp 00007fffa5ab6988 error 4
> > > 
> > > However I have only received 7 of these since last night instead of
> > > hundreds while running xen.
> > > 
> > > When I booted the system last night with 2.6.18-53.1.14.el5 I received
> > > some additional "messages" log entries :
> > > 
> > > May  8 01:50:00 DeGw kernel: irq 193: nobody cared (try booting with the "irqpoll" option)
> > > May  8 01:50:00 DeGw kernel:
> > > May  8 01:50:00 DeGw kernel: Call Trace:
> > > May  8 01:50:00 DeGw kernel:  <IRQ>  [<ffffffff800b703a>]__report_bad_irq+0x30/0x7d
> > > May  8 01:50:00 DeGw kernel:  [<ffffffff800b726d>] note_interrupt+0x1e6/0x227
> > > May  8 01:50:00 DeGw kernel:  [<ffffffff800b677f>] __do_IRQ+0xc7/0x105
> > > May  8 01:50:00 DeGw kernel:  [<ffffffff80011cc5>] __do_softirq+0x5e/0xd5
> > > May  8 01:50:00 DeGw kernel:  [<ffffffff8006b3bd>] do_IRQ+0xe7/0xf5
> > > May  8 01:50:00 DeGw kernel:  [<ffffffff80069d0e>] default_idle+0x0/0x50
> > > May  8 01:50:00 DeGw kernel:  [<ffffffff8005c615>] ret_from_intr+0x0/0xa
> > > May  8 01:50:00 DeGw kernel:  <EOI>  [<ffffffff80069d37>] default_idle+0x29/0x50
> > > May  8 01:50:00 DeGw kernel:  [<ffffffff80046fb1>] cpu_idle+0x95/0xb8
> > > May  8 01:50:00 DeGw kernel:  [<ffffffff803d3806>] start_kernel+0x220/0x225
> > > May  8 01:50:00 DeGw kernel:  [<ffffffff803d3237>] _sinittext+0x237/0x23e
> > > May  8 01:50:00 DeGw kernel:
> > > May  8 01:50:00 DeGw kernel: handlers:
> > > May  8 01:50:00 DeGw kernel: [<ffffffff801dc154>] (usb_hcd_irq+0x0/0x55)
> > > May  8 01:50:00 DeGw kernel: Disabling IRQ #193
> > > 
> > > If any of you can help me get a start on this problem I would sure
> > > appreciate your help.
> > 
> > It appears to be a flakey USB controller. Is the printer USB?
> > Is it plugged into a USB hub? Check your USB cables, hubs and
> > try to plug it into a different port.
> > 
> 
> Ross,
> 
> Thanks for your response.  All the printers are networked and none are
> connected to the server's usb  ports.  In fact there is nothing
> connected to this server's usb ports.  
> 
> In looking at the cups error logs I am getting abundant entries of :
> 
> (/usr/lib/cups/backend/ipp) crashed on signal 11!
> 
> I turned on cups debug, but did not learn anything else.
> 
> Thanks again for your help,

Well the IRQ error is definitely USB related. Maybe a memory check
is in order here.

Sendmail and cups are not related and the fact that you see errors
in both and strange runaway IRQ errors seems to mean there is a
hardware problem here.

Check memory (low hanging fruit), then it may be time to start
looking at the motherboard.

-Ross

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