[Rpm-maint] [rpm-software-management/rpm] debugedit fails to update section headers (#423)

[rguenth]

debugedit -b /home/abuild/rpmbuild/BUILD/xtables-addons-3.0 -d /usr/src/debug/xtables-addons-3.0-0.x86_64 test.ko

results in

There are 41 section headers, starting at offset 0x870a8:

Section Headers:
  [Nr] Name              Type             Address           Offset
       Size              EntSize          Flags  Link  Info  Align
  [ 0] et                NULL             0000000000000000  00000000
       0000000000000000  0000000000000000           0     0     0
  [ 1] ab                NOTE             0000000000000000  00000040
       0000000000000024  0000000000000000   A       0     0     4
  [ 2] ela.text          PROGBITS         0000000000000000  00000070
       0000000000000340  0000000000000000  AX       0     0     16
...

the .shstrtab (40) starts with

Hex dump of section 'ab':
  0x00000000 65740000 2e73796d 74616200 2e737472 et...symtab..str
  0x00000010 74616200 2e736873 74727461 62002e6e tab..shstrtab..n
  0x00000020 6f74652e 676e752e 6275696c 642d6964 ote.gnu.build-id

and suspiciously 37 (.rela.debug_frame) contains (look at the end!)

Hex dump of section 'ck':
  0x00000000 455f4944 5f766572 6d616769 63313400 E_ID_vermagic14.
  0x00000010 736b625f 636f7079 5f626974 73007874 skb_copy_bits.xt
  0x00000020 5f726567 69737465 725f6d61 74636800 _register_match.
  0x00000030 5f5f7468 69735f6d 6f64756c 6500736b __this_module.sk
  0x00000040 625f6d61 6b655f77 72697461 626c6500 b_make_writable.
  0x00000050 636c6561 6e75705f 6d6f6475 6c65005f cleanup_module._
  0x00000060 5f66656e 7472795f 5f00696e 69745f6d _fentry__.init_m
  0x00000070 6f64756c 65007874 5f756e72 65676973 odule.xt_unregis
  0x00000080 7465725f 6d617463 68005f5f 73746163 ter_match.__stac
  0x00000090 6b5f6368 6b5f6661 696c0078 745f7265 k_chk_fail.xt_re
  0x000000a0 67697374 65725f74 61726765 74007874 gister_target.xt
  0x000000b0 5f756e72 65676973 7465725f 74617267 _unregister_targ

so the real .shstrtab should start at 00086f1c instead of 00086f18.

So there's a off-by-4 error somewhere...

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