[Bug binutils/28176] New: Floating point exception on `nm-new -l`

[shaohua.li at inf dot ethz.ch]

https://sourceware.org/bugzilla/show_bug.cgi?id=28176

            Bug ID: 28176
           Summary: Floating point exception on `nm-new -l`
           Product: binutils
           Version: 2.38 (HEAD)
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: binutils
          Assignee: unassigned at sourceware dot org
          Reporter: shaohua.li at inf dot ethz.ch
  Target Milestone: ---

Created attachment 13586
  --> https://sourceware.org/bugzilla/attachment.cgi?id=13586&action=edit
poc

Hi there,

I found a FPE (floating point exception) on `nm-new -l` with a fuzzer.

- binutils version: 2.38(Head), commit af51804103a08cd1e12edc4f4a30eec2c5c4f9e8
- Compiler: clang12
- Platform: Ubuntu 18.04.5 LTS, x86_64
- Reproduce: run `nm-new -l poc`

AddressSanitizer report:

==652==ERROR: AddressSanitizer: FPE on unknown address 0x000001106c24 (pc
0x000001106c24 bp 0x7ffc482e0680 sp 0x7ffc482e0360 T0)
    #0 0x1106c24 in rl78_compute_complex_reloc
/binutils_latest/repo/bfd/elf32-rl78.c:531:12
    #1 0x1103d97 in rl78_special_reloc
/binutils_latest/repo/bfd/elf32-rl78.c:578:16
    #2 0x154b6b7 in bfd_perform_relocation
/binutils_latest/repo/bfd/reloc.c:711:14
    #3 0x154f66f in bfd_generic_get_relocated_section_contents
/binutils_latest/repo/bfd/reloc.c:8463:10
    #4 0x4eaa6f in bfd_get_relocated_section_contents
/binutils_latest/repo/bfd/bfd.c:2166:10
    #5 0x1551708 in bfd_simple_get_relocated_section_contents
/binutils_latest/repo/bfd/simple.c:298:14
    #6 0x6a9f0c in read_section /binutils_latest/repo/bfd/./dwarf2.c:582:7
    #7 0x6a6ba7 in _bfd_dwarf2_slurp_debug_info
/binutils_latest/repo/bfd/./dwarf2.c:4737:13
    #8 0x6ab131 in _bfd_dwarf2_find_nearest_line
/binutils_latest/repo/bfd/./dwarf2.c:4985:9
    #9 0x5d0246 in _bfd_elf_find_line /binutils_latest/repo/bfd/elf.c:9241:10
    #10 0x4d1ba0 in print_symbol /binutils_latest/repo/binutils/nm.c:1071:9
    #11 0x4ceaeb in print_symbols /binutils_latest/repo/binutils/nm.c:1152:7
    #12 0x4cd23c in display_rel_file /binutils_latest/repo/binutils/nm.c:1279:5
    #13 0x4c97dd in display_file /binutils_latest/repo/binutils/nm.c:1446:7
    #14 0x4c90db in main /binutils_latest/repo/binutils/nm.c:1965:12
    #15 0x7f5e6373a0b2 in __libc_start_main
(/lib/x86_64-linux-gnu/libc.so.6+0x270b2)
    #16 0x41c55d in _start (/out_bin/nm-new+0x41c55d)

AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: FPE /binutils_latest/repo/bfd/elf32-rl78.c:531:12 in
rl78_compute_complex_reloc
==652==ABORTING

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