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Bug with fuzz input at bfd_generic_get_relocated_section_contents


From: David Moreno Montero
Subject: Bug with fuzz input at bfd_generic_get_relocated_section_contents
Date: Sun, 22 Jul 2012 22:34:13 +0100

Hi,

at the Software Testing 258 at Udacity we were instructed to generate a
fuzzer and try it on a project Fom this work I found gcc (which is caling
ld) to give this output under certain fuzzed files:


/usr/bin/ld: BFD version 2.22.52.0.1-10.fc17 20120131 internal error,
aborting at reloc.c line 6394 in bfd_generic_get_relocated_section_contents
/usr/bin/ld: Please report this bug.


I attach a tar.gz with the .o objects that make it fail, along with a
gcc.sh that allows easy repeat of the message.

I will tidy up my fuzzer code, but nontheless I attach it so you can
improve and/or use it. It can be seen as a ugly proof of concept.

Thanks for the great job you are doing on gnu utils.
-- 
David Moreno Montero

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Attachment: fuzz.tar.gz
Description: GNU Zip compressed data

Attachment: fuzzer.py
Description: Binary data


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