* Fuzzer extension for gcc
@ 2018-06-10 22:43 sameeran joshi
2018-06-11 8:06 ` Andi Kleen
0 siblings, 1 reply; 2+ messages in thread
From: sameeran joshi @ 2018-06-10 22:43 UTC (permalink / raw)
To: gcc; +Cc: ak
Hi all,I have been figuring out to work on some project,so while searching
I found fuzzer implementation project quite interesting,so please can I get
some information and links about the extension of fuzzer project for gcc .
Can anyone help me please.
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: Fuzzer extension for gcc
2018-06-10 22:43 Fuzzer extension for gcc sameeran joshi
@ 2018-06-11 8:06 ` Andi Kleen
0 siblings, 0 replies; 2+ messages in thread
From: Andi Kleen @ 2018-06-11 8:06 UTC (permalink / raw)
To: sameeran joshi; +Cc: gcc
On Sun, Jun 10, 2018 at 12:49:44PM +0530, sameeran joshi wrote:
> Hi all,I have been figuring out to work on some project,so while searching
> I found fuzzer implementation project quite interesting,so please can I
> get some information and links about theÃÂ extension ofÃÂ fuzzer project for
> gcc .
> Can anyone help me please.
Hi,
The deadline for the Google Summer of code project this year has already passed,
so at least for this year it's not possible as a paid project.
However if you're still interested in working on it outside of SoC
you're welcome of course.
The basic project is to extend an existing C language fuzzer, such
as https://embed.cs.utah.edu/csmith/ or
https://github.com/intel/yarpgen
to cover gcc language extensions,
run it against the compiler and report compiler crashes it finds.
For a description of the gcc language extensions please see
https://gcc.gnu.org/onlinedocs/gcc-8.1.0/gcc/#toc-Extensions-to-the-C-Language-Family
In addition there are other extensions, such as OpenMP, or the
transactional memory extensions.
https://www.openmp.org/specifications/
https://gcc.gnu.org/wiki/TransactionalMemory
Tasks:
- Investigate the documentation of some extensions and understand their scope
Pick a reasonable set to implement. For a short term project this
could be one or more simple extensions, or for a longer project this could be
a subset of a complex extension, such as a OpenMP
- Investigate the chosen extensions the code base of one the fuzzers
- Run fuzzing against the compiler
- See if it crashes the compiler or generates invalid output
- Investigate bug reports to see if they are not malformed
- Submit bugs
The main challenge of the project is to understand some extensions well
enough that you can implement a fuzzer and implement them
in a way that the resulting randomly generated code is not malformed.
-Andi
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