Re: How do you fix a Kernel Panic?

[Don MacAskill <onethumb onethumb com>]

FYI, I have built my own 'netconsole' module and it's passing messages 
fine from my AMD64 box to my logging box.

Hopefully it gets what we need when the crash happens.

I'm still not sure why Red Hat wouldn't include this module by default 
for this platform, but I opened a support request with them.

Don


Don MacAskill wrote:

> For some reason, the ia64 and x86_64 kernels don't have netconsole 
> compiled as a module, making it tough to netdump:
>
> [root zeus configs]# pwd
> /usr/src/linux-2.4.21-15.EL/configs
> [root zeus configs]# grep NETCONSOLE *
> kernel-2.4.21-athlon.config:CONFIG_NETCONSOLE=m
> kernel-2.4.21-athlon-smp.config:CONFIG_NETCONSOLE=m
> kernel-2.4.21-i386-BOOT.config:CONFIG_NETCONSOLE=m
> kernel-2.4.21-i386.config:CONFIG_NETCONSOLE=m
> kernel-2.4.21-i586.config:CONFIG_NETCONSOLE=m
> kernel-2.4.21-i586-smp.config:CONFIG_NETCONSOLE=m
> kernel-2.4.21-i686.config:CONFIG_NETCONSOLE=m
> kernel-2.4.21-i686-hugemem.config:CONFIG_NETCONSOLE=m
> kernel-2.4.21-i686-smp.config:CONFIG_NETCONSOLE=m
> kernel-2.4.21-ia32e.config:# CONFIG_NETCONSOLE is not set
> kernel-2.4.21-ia32e.config:# CONFIG_NETCONSOLE is not set
> kernel-2.4.21-ia64.config:# CONFIG_NETCONSOLE is not set
> kernel-2.4.21-ia64.config:# CONFIG_NETCONSOLE is not set
> kernel-2.4.21-ppc64.config:CONFIG_NETCONSOLE=m
> kernel-2.4.21-ppc64iseries.config:CONFIG_NETCONSOLE=m
> kernel-2.4.21-ppc64pseries.config:CONFIG_NETCONSOLE=m
> kernel-2.4.21-s390.config:CONFIG_NETCONSOLE=m
> kernel-2.4.21-s390x.config:CONFIG_NETCONSOLE=m
> kernel-2.4.21-x86_64.config:# CONFIG_NETCONSOLE is not set
> kernel-2.4.21-x86_64.config:# CONFIG_NETCONSOLE is not set
> kernel-2.4.21-x86_64-smp.config:# CONFIG_NETCONSOLE is not set
> kernel-2.4.21-x86_64-smp.config:# CONFIG_NETCONSOLE is not set
>
>
> I'm currently buliding the x86_64 module myself, I'll see how it goes, 
> but I have consistent crashing with x86_64 WS every 8 days or so.
>
> Anyone know why those platforms don't have NETCONSOLE by default?  ppc64 
> does, so I don't think it's a 64bit thing.
>
> Don
>
>
>
> jmklinke rockwellcollins com wrote:
>
> > My 2 starting point suggestions would be:
> >
> > 1) enable kernel logging in the /etc/syslog.conf file.Sometimes it's
> > handier to send it to a file like /var/log/kernel instead of messages.
> >
> > 2) set up the netdump and netconsole services (see netdump and
> > netdump-server rpms) to a remote host so you can catch the dump 
> > (especially
> > if you aren't getting anywhere with the "Oops" message.
> >
> >
> > --Jon
> >
> >
> >                                                                                                                        
> >                       David 
> > Clements                                                                                   
> >                       <dclements mercury         To:       "Discussion 
> > of Red Hat Enterprise Linux 3 (Taroon)"                               
> > com>                        
> > <taroon-list redhat com>                                             
> >                       Sent by:                   
> > cc:                                                                   
> >                       taroon-list-bounces        Subject:  How do you 
> > fix a Kernel Panic?                                                    
> > @redhat.com                                                                                      
> >                                                                                                                        
> >                                                                                                                        
> >                       05/26/2004 10:42 
> > AM                                                                              
> >                       Please respond 
> > to                                                                                
> >                       "Discussion of 
> > Red                                                                               
> >                       Hat 
> > Enterprise                                                                                   
> >                       Linux 3 
> > (Taroon)"                                                                                
> >                                                                                                                        
> >                                                                                                                        
> >
> >
> >
> >
> >
> > Anyone have some advice on how to debug a Kernel Panic?  All I have is a
> > cryptic message from the console.  Does Linux provide a dump file like
> > Solaris does?
> >
> >
> > Dave--
> > Taroon-list mailing list
> > Taroon-list redhat com
> > http://www.redhat.com/mailman/listinfo/taroon-list
> >
> >
> >
> >
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