[Bug gdb/25479] AddressSanitizer: heap-buffer-overflow in lookup_minimal_symbol_by_pc_name

[Bug gdb/25479] AddressSanitizer: heap-buffer-overflow in lookup_minimal_symbol_by_pc_name

[tromey at sourceware dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=25479

--- Comment #8 from Tom Tromey <tromey at sourceware dot org> ---
(In reply to Christian Biesinger from comment #7)
> (In reply to Tom Tromey from comment #5)
> > I've looked at it a little.  I tend to think it is a pre-existing
> > bug.  I suspect Address Sanitizer doesn't understand how to examine
> > objects allocated on an obstack (neither does valgrind...), which is
> > why this was never detected.
> 
> Offtopic, but Valgrind can be taught this:
> http://valgrind.org/docs/manual/mc-manual.html#mc-manual.mempools
> I've been meaning to look into that.

Yeah, me too.  We also use a similar thing, "objalloc", via BFD
(obstack was deemed too heavy, lol, by someone in ancient times).
I imagine marking that up would reveal all the lurking BFD bugs.

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[Bug gdb/25479] AddressSanitizer: heap-buffer-overflow in lookup_minimal_symbol_by_pc_name

[sam at gentoo dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=25479

Sam James <sam at gentoo dot org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |sam at gentoo dot org

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[Bug gdb/25479] AddressSanitizer: heap-buffer-overflow in lookup_minimal_symbol_by_pc_name

[tromey at sourceware dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=25479

Tom Tromey <tromey at sourceware dot org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |dje at google dot com

--- Comment #9 from Tom Tromey <tromey at sourceware dot org> ---
*** Bug 15883 has been marked as a duplicate of this bug. ***

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[Bug gdb/25479] AddressSanitizer: heap-buffer-overflow in lookup_minimal_symbol_by_pc_name

[tromey at sourceware dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=25479

Tom Tromey <tromey at sourceware dot org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |FIXED
   Target Milestone|---                         |13.1
             Status|NEW                         |RESOLVED

--- Comment #10 from Tom Tromey <tromey at sourceware dot org> ---
It turns out this was fixed:

commit 9d428aae67a67087959822b0ffd81f7df96218c7
Author: Simon Marchi <simon.marchi@efficios.com>
Date:   Wed May 20 15:44:24 2020 -0400

    gdb: reset/recompute objfile section offsets in reread_symbols

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