[Bug binutils/29231] New: objdump crashes on show_line:objdump.c:1958

[shaohua.li at inf dot ethz.ch]

https://sourceware.org/bugzilla/show_bug.cgi?id=29231

            Bug ID: 29231
           Summary: objdump crashes on show_line:objdump.c:1958
           Product: binutils
           Version: 2.39 (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 14136
  --> https://sourceware.org/bugzilla/attachment.cgi?id=14136&action=edit
poc

On the given poc file, `objdump -S` crashes.

AddressSanitizer report:
AddressSanitizer:DEADLYSIGNAL
=================================================================
==1668551==ERROR: AddressSanitizer: SEGV on unknown address 0x0000000005f8 (pc
0x00000050a616 bp 0x7ffe4fa9ff70 sp 0x7ffe4fa9f980 T0)
==1668551==The signal is caused by a READ memory access.
==1668551==Hint: address points to the zero page.
    #0 0x50a616 in show_line
//objdump/repo/binutils-asan/binutils/./objdump.c:1958:31
    #1 0x500f08 in disassemble_bytes
//objdump/repo/binutils-asan/binutils/./objdump.c:3085:6
    #2 0x4f158e in disassemble_section
//objdump/repo/binutils-asan/binutils/./objdump.c:3778:4
    #3 0x15298d5 in bfd_map_over_sections
//objdump/repo/binutils-asan/bfd/section.c:1370:5
    #4 0x4dec21 in disassemble_data
//objdump/repo/binutils-asan/binutils/./objdump.c:3922:3
    #5 0x4d76dd in dump_bfd
//objdump/repo/binutils-asan/binutils/./objdump.c:5358:2
    #6 0x4d5a4f in display_object_bfd
//objdump/repo/binutils-asan/binutils/./objdump.c:5421:7
    #7 0x4d594d in display_any_bfd
//objdump/repo/binutils-asan/binutils/./objdump.c:5511:5
    #8 0x4d32cc in display_file
//objdump/repo/binutils-asan/binutils/./objdump.c:5532:3
    #9 0x4d0d4c in main
//objdump/repo/binutils-asan/binutils/./objdump.c:5924:6
    #10 0x7f333efed082 in __libc_start_main
(/lib/x86_64-linux-gnu/libc.so.6+0x24082)
    #11 0x41d5cd in _start
(/objdump/repo/binutils-asan/binutils/objdump+0x41d5cd)

AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV
//objdump/repo/binutils-asan/binutils/./objdump.c:1958:31 in show_line
==1668551==ABORTING

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