[Bug tdep/29598] New: dereferenced null pointer in arm-dis.c

[Bug tdep/29598] New: dereferenced null pointer in arm-dis.c

[nickkirkby at protonmail dot ch]

https://sourceware.org/bugzilla/show_bug.cgi?id=29598

            Bug ID: 29598
           Summary: dereferenced null pointer in arm-dis.c
           Product: gdb
           Version: HEAD
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: tdep
          Assignee: unassigned at sourceware dot org
          Reporter: nickkirkby at protonmail dot ch
  Target Milestone: ---

Created attachment 14349
  --> https://sourceware.org/bugzilla/attachment.cgi?id=14349&action=edit
patch

Thread 1 "gdb" received signal SIGSEGV, Segmentation fault.
0x000055555622616a in mapping_symbol_for_insn (During symbol reading:
incomplete CFI data; unspecified registers (e.g., rax) at 0x555556226181
During symbol reading: .debug_rnglists entry has start address of zero [in
module /home/user/repos/gdb-13.0.50.20220920/build/gdb/gdb]
During symbol reading: .debug_line address at offset 0x2511c7 is 0 [in module
/home/user/repos/gdb-13.0.50.20220920/build/gdb/gdb]
During symbol reading: unsupported tag: 'DW_TAG_unspecified_type'
During symbol reading: Member function "~_Sp_counted_base" (offset 0x1ceaf15)
is virtual but the vtable offset is not specified
During symbol reading: No DW_FORM_block* DW_AT_call_value for DW_TAG_call_site
child DIE 0x1d0ff23 [in module
/home/user/repos/gdb-13.0.50.20220920/build/gdb/gdb]
pc=pc@entry=68022, info=info@entry=0x7fffffffd1c8,
map_symbol=map_symbol@entry=0x7fffffffcf28) at ../../opcodes/arm-dis.c:11868
11868         || bfd_asymbol_flavour (*info->symtab) != bfd_target_elf_flavour)


Previously opened incorrectly at:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106996

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[Bug tdep/29598] dereferenced null pointer in arm-dis.c

[luis.machado at arm dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=29598

Luis Machado <luis.machado at arm dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |luis.machado at arm dot com
           Assignee|unassigned at sourceware dot org   |luis.machado at arm dot com

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[Bug tdep/29598] dereferenced null pointer in arm-dis.c

[cvs-commit at gcc dot gnu.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=29598

--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Luis Machado <luisgpm@sourceware.org>:

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=76a95facf1260326469dc9952adc6ee034bac735

commit 76a95facf1260326469dc9952adc6ee034bac735
Author: Luis Machado <luis.machado@arm.com>
Date:   Wed Nov 2 07:17:46 2022 +0000

    [opcodes/arm] Fix potential null pointer dereferences

      PR tdep/29598

      As pointed out in the bug ticket, we have a couple potential null pointer
      dereferencing situations. Harden those.

      Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=29598

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[Bug tdep/29598] dereferenced null pointer in arm-dis.c

[luis.machado at arm dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=29598

Luis Machado <luis.machado at arm dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |FIXED
             Status|UNCONFIRMED                 |RESOLVED

--- Comment #2 from Luis Machado <luis.machado at arm dot com> ---
Fixed. Please reopen if you see any issues.

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