[Bug binutils/30150] addr2line returns wrong results after several thousands of requests in pipe mode

[lveyde at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=30150

--- Comment #12 from Lev Veyde <lveyde at gmail dot com> ---
(In reply to Nick Clifton from comment #11)
> (In reply to Lev Veyde from comment #0)
> Hi Lev,
> 
> > It seems that after a few thousands of results (normally over 3000-4000) the
> > addr2line in pipe mode (with -fie option) begins to randomly return
> > incorrect results.
> 
> How exactly is addr2line being run ?  Can you provide an example command
> line ?
> 
> > Most frequently it begins to return file names for addresses of symbols
> > which have not been defined in source files, that is instead of the expected
> > ??:?
> 
> Have you tried compiling addr2line with address sanitization enabled ?  Or
> running it under valgrind ?  Given the description of the problem it sounds
> like some kind of memory problem/buffer overrun issue.
> 
> Cheers
>   Nick

It's being started as:

addr2line -fie vmlinux

and then requests are being made to it in a loop.

In our particular use case we have a code programmed in Golang that does all
these requests, using this module:

https://github.com/elazarl/addr2line


I haven't tried compiling the addr2line in any non-default configuration, nor
running it under valgrind.

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