[Crash-utility] Re: source line numbers and modules (on x86_64)

[Dave Anderson]

Mike Snitzer wrote:
> Hi,
>
> I searched the archives and found that you've discussed an issue I'm
> seeing with x86_64 kernels where crash doesn't have line numbers for
> modules' symbols:
> https://www.redhat.com/archives/crash-utility/2008-January/msg00021.html
>
> I'm using crash-4.0-6.3 on a RHEL5U1 x86_64 system with a custom
> 2.6.22.19 kernel.  Given that the RHEL5U1 x86_64 kernels clearly do
> provide accurate line numbers for modules, has anyone identified how
> that is?  I have to believe the redhat kernel is patched to fix this
> issue.
>
> I looked over the various redhat patches that are applied to RHEL5's
> 2.6.18 sources but can't see a patch that stands out as specifically
> addressing this x86_64 issue.  But I could easily be overlooking some
> patch.
>
> please advise, thanks.
> Mike
>
> ps. please cc me as I've not yet been able to join the list
>   
You're on the list now...

Anyway, there are no kernel patches applied to RHEL5 kernels
to make it work that I'm aware of.  That being said, I don't
have an answer as to why they don't work for modules on your
custom kernel (or why they don't work in RHEL4 kernels...).

Dave