[Bug translator/9792] probefunc() returns absolute address instead of the function name

["mjw at redhat dot com" <sourceware-bugzilla at sourceware dot org>]

------- Additional Comments From mjw at redhat dot com  2009-02-01 11:10 -------
The patch to elfutils in the description is indeed the culprit.
7d9b821d "Fix last fix: ET_DYN addresses are taken as relative to MOD->low_addr."

The problem that this fixes is that dwfl_module_relocate_address now returns an
actual relocated address for kernel symbol addresses relative to the "load
address" (since the kernel is ET_DYN). Previously it would just substract
main.bias (or even more wrongly debug.bias) both of which were always zero for
the kernel.

Luckily all we need is the address relative to _stext. So all we need to do is
make sure that the extra_offset we calculate based on the _stext address is also
relocated (currently we don't do this for the _stext address, but we do for all
sym.addr). That should work whether we use an elfutils with or without this bugfix.

Testing a patch.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |roland at redhat dot com
         AssignedTo|systemtap at sources dot    |mjw at redhat dot com
                   |redhat dot com              |
             Status|NEW                         |ASSIGNED


http://sourceware.org/bugzilla/show_bug.cgi?id=9792

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