[Crash-utility] Re: Symbol info from System.map vs. DLKM-debuginfo
On October 5, 2009 04:25:49 pm Dave Anderson wrote:
However, then you loaded (via an internal "add-symbol-file"
gdb operation)
the older nfsd.ko module's information into the crash utility -- and it
overwrote the original symbol value data with that from the (non-matching)
nfsd.ko that contains the incorrect f908b984 address. So the crash utility
is just doing what you told it to do. There's no support for loading a
module that doesn't match reality, and continuing to use the old (correct)
symbol addresses.
Hi Dave,
thank you for clarifications. 'lru_head' originates indeed not from the
System.map but rather kallsyms. This means that on a live kernel I'll be able
to use old debuginfo nfsd.ko if I am careful and get the address _before_
using mod command. But now I understand that this approach is very
error-prone.
Thanks,
Alex
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Alexandre Sidorenko email: asid(a)hp.com
WTEC Linux Hewlett-Packard (Canada)
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