[Bug binutils/28175] New: Segment fault on `nm-new -a -l`

[shaohua.li at inf dot ethz.ch]

https://sourceware.org/bugzilla/show_bug.cgi?id=28175

            Bug ID: 28175
           Summary: Segment fault on `nm-new -a -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 13585
  --> https://sourceware.org/bugzilla/attachment.cgi?id=13585&action=edit
poc

Hi there,

I crashed `nm-new -a -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 -a -l poc`

AddressSanitizer report:

==640==ERROR: AddressSanitizer: SEGV on unknown address 0x621050000558 (pc
0x000000ced0ab bp 0x7ffff11c0d70 sp 0x7ffff11c0ca0 T0)
==640==The signal is caused by a READ memory access.
    #0 0xced0ab in reloc_processing
/binutils_latest/repo/bfd/coff-tic30.c:165:35
    #1 0xceac05 in coff_slurp_reloc_table
/binutils_latest/repo/bfd/./coffcode.h:5120:7
    #2 0xce63d8 in coff_canonicalize_reloc
/binutils_latest/repo/bfd/./coffcode.h:5238:13
    #3 0x4e96db in bfd_canonicalize_reloc
/binutils_latest/repo/bfd/bfd.c:1579:10
    #4 0x4d2276 in get_relocs /binutils_latest/repo/binutils/nm.c:913:25
    #5 0x50e6ba in bfd_map_over_sections
/binutils_latest/repo/bfd/section.c:1383:5
    #6 0x4d147a in print_symbol /binutils_latest/repo/binutils/nm.c:1037:8
    #7 0x4ceaeb in print_symbols /binutils_latest/repo/binutils/nm.c:1152:7
    #8 0x4cd23c in display_rel_file /binutils_latest/repo/binutils/nm.c:1279:5
    #9 0x4c97dd in display_file /binutils_latest/repo/binutils/nm.c:1446:7
    #10 0x4c90db in main /binutils_latest/repo/binutils/nm.c:1965:12
    #11 0x7fda9a2cb0b2 in __libc_start_main
(/lib/x86_64-linux-gnu/libc.so.6+0x270b2)
    #12 0x41c55d in _start (/out_bin/nm-new+0x41c55d)

AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV /binutils_latest/repo/bfd/coff-tic30.c:165:35
in reloc_processing
==640==ABORTING

-- 
You are receiving this mail because:
You are on the CC list for the bug.