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Tool for checking common errors in rpm packages

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Unable to decode utf-8 when rpmlint some debuginfo packages

carlosrodfern opened this issue · comments

commented

How to reproduce:

$ curl -LO https://kojipkgs.fedoraproject.org//packages/libcap/2.69/1.fc40/x86_64/libcap-debuginfo-2.69-1.fc40.x86_64.rpm

$ rpmlint libcap-debuginfo-2.69-1.fc40.x86_64.rpm

(none): E: fatal error while reading libcap-debuginfo-2.69-1.fc40.x86_64.rpm: 'utf-8' codec can't decode byte 0xcc in position 448: invalid continuation byte

The Cause

$ rpm2cpio libcap-debuginfo-2.69-1.fc40.x86_64.rpm | cpio -imvd

$ readelf -W -l ./usr/lib/debug/usr/lib64/libpsx.so.2.69-2.69-1.fc40.x86_64.debug

Elf file type is DYN (Shared object file)
Entry point 0x3a50
There are 13 program headers, starting at offset 64

Program Headers:
  Type           Offset   VirtAddr           PhysAddr           FileSiz  MemSiz   Flg Align
  PHDR           0x000040 0x0000000000000040 0x0000000000000040 0x0002d8 0x0002d8 R   0x8
  INTERP         0x004200 0x0000000000004200 0x0000000000004200 0x00001c 0x00001c R   0x10
      [Requesting program interpreter: �BY"��[�]
  LOAD           0x000000 0x0000000000000000 0x0000000000000000 0x001318 0x001318 R   0x1000
  LOAD           0x002000 0x0000000000002000 0x0000000000002000 0x001c2d 0x001c2d R E 0x1000
  LOAD           0x004000 0x0000000000004000 0x0000000000004000 0x000713 0x000713 R   0x1000
  LOAD           0x004c40 0x0000000000005c40 0x0000000000005c40 0x0003c8 0x000608 RW  0x1000
  DYNAMIC        0x004c58 0x0000000000005c58 0x0000000000005c58 0x000200 0x000200 RW  0x8
  NOTE           0x000318 0x0000000000000318 0x0000000000000318 0x000040 0x000040 R   0x8
  NOTE           0x000358 0x0000000000000358 0x0000000000000358 0x0000ac 0x0000ac R   0x4
  GNU_PROPERTY   0x000318 0x0000000000000318 0x0000000000000318 0x000040 0x000040 R   0x8
  GNU_EH_FRAME   0x00421c 0x000000000000421c 0x000000000000421c 0x0000dc 0x0000dc R   0x4
  GNU_STACK      0x000000 0x0000000000000000 0x0000000000000000 0x000000 0x000000 RW  0x10
  GNU_RELRO      0x004c40 0x0000000000005c40 0x0000000000005c40 0x0003c0 0x0003c0 R   0x1
...

The .interp section is left but the content is removed by the find-debuginfo.sh tool (using eu-strip), so when readelf attempts to locate its content, it just loads gibberish, which may be non-utf-8 characters.

The .interp section is correct before the debug is separated:

$ git clone https://git.kernel.org/pub/scm/libs/libcap/libcap.git
$ cd libcap
$ make
$ readelf -W -l libcap/libpsx.so

...
Program Headers:
  Type           Offset   VirtAddr           PhysAddr           FileSiz  MemSiz   Flg Align
  PHDR           0x000040 0x0000000000000040 0x0000000000000040 0x0002d8 0x0002d8 R   0x8
  INTERP         0x0041f0 0x00000000000041f0 0x00000000000041f0 0x00001c 0x00001c R   0x10
      [Requesting program interpreter: /lib64/ld-linux-x86-64.so.2]
  LOAD           0x000000 0x0000000000000000 0x0000000000000000 0x001218 0x001218 R   0x1000
...