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Seen some problems with elfuitls-0.131 on x86_64


Iam facing some problems with elfutils-0.131 on x86_64.

1) [root@llm42 obj]# ./stap -vvvvvv ../src/testsuite/buildok/seventeen.stp

SystemTap translator/driver (version 0.6/0.131 built 2007-12-17)
Copyright (C) 2005-2007 Red Hat, Inc. and others
This is free software; see the source for copying conditions.
Created temporary directory "/tmp/stap8sz4gd"
Searched '/home/systemtap/tmp/stap_testing_200712171145/install/share/systemtap/tapset/x86_64/*.stp', found 1
Searched '/home/systemtap/tmp/stap_testing_200712171145/install/share/systemtap/tapset/*.stp', found 37
Pass 1: parsed user script and 38 library script(s) in 510usr/10sys/526real ms.
control symbols: kts: 0xffffffff8046c570 kte: 0xffffffff8046f451 stext: 0xffffffff80209000
parsed 'pipe_write' -> func 'pipe_write'
pattern 'kernel' matches module 'kernel'
focused on module 'kernel = [0xffffffff80200000-0xffffffff809968a0, bias 0x0] file /boot/vmlinux-2.6.24-rc5 ELF machine x86_64 (code 62)
pattern 'pipe_write' matches function 'pipe_write'
selected function pipe_write
probe pipe_write@fs/pipe.c:396 kernel pc=0xffffffff8029b631
finding location for local 'write_fifo_fops' near address ffffffff8029b631, module bias 0
dwarf_builder releasing dwflpp
semantic error: cannot relocate user-space dso (?) address: identifier '$write_fifo_fops' at ../src/testsuite/buildok/seventeen.stp:8:19
Pass 2: analyzed script: 1 probe(s), 0 function(s), 0 embed(s), 0 global(s) in 230usr/60sys/288real ms.
Pass 2: analysis failed.  Try again with more '-v' (verbose) options.
Running rm -rf /tmp/stap8sz4gd

On debugging I found that mod->reloc_info(no relocation info) is NULL and hence the problem.

So Am I missing something??

2) Same could be the reason for bug 5483. Where I could clearly see that elfutils fails to fetch the init section name and causing the problem.

Could somebody throw light on this

Thanks
Srinivasa DS


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