[Crash-utility] Crash fails for 2.6.19.2 kernel

Marc Milgram mmilgram at egenera.com
Tue Jan 16 13:54:57 UTC 2007


Thanks,

I built the latest version of crash, but was using an old version.
Oops.  Now I am past that problem.

Unfortunately, now I get System.map and /dev/crash do not match!
I probably built the kernel incorrectly for crash.  I will investigate.

-Marc

On Mon, 2007-01-15 at 17:18 -0500, Dave Anderson wrote:
> Marc Milgram wrote: 
> > I tried to use crash on a 2.6.19.2 dump, but it failed with the 
> > following complaint: 
> > crash: cannot resolve "system_utsname" 
> > 
> > I found that there is no longer a symbol by that name in 2.6.19.2.
> > It 
> > appears to be referenced by init_urs_ns->name, but I didn't
> > investigate 
> > fully.  The important issue for me is that crash doesn't work. 
> > 
> > -Marc 
> >  
> > 
> What version of crash?  The crash changelog refers to a fix 
> for that quite some time ago: 
> 
> 4.0-2.31 - Bumped crash-internal NR_CPUS for x86 and ia64; added a
> warning 
>            message to "recompile crash" and forced an initialization
> failure 
>            when the kernel's configured NR_CPUS is greater than the
> maximum 
>            allowed NR_CPUS value compiled into crash. 
>            (maneesh at in.ibm.com, anderson at redhat.com) 
> 
>          - Fix for initialization failure indicating a
> kernel/memory-source 
>            mismatch when x86 kernel configures its physical memory
> start 
>            address higher than the traditional 1MB starting point. 
>            (anderson at redhat.com) 
> 
>          - Fix for kernels that have replaced the "system_utsname"
> data 
>            structure with contents of the "init_uts_ns" data
> structure. 
>            This fixes a "crash: cannot resolve system_utsname"
> initialization 
>            failure.  (pbadari at us.ibm.com, anderson at redhat.com) 
>   
>          ... 
>   
>   
> 
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