[tor-relays] Tor fuzzying with AFL - issues with virt mem

[teor]

> On 25 Jul 2017, at 06:32, Toralf Förster <toralf.foerster at gmx.de> wrote:
> 
> Signed PGP part
> On 07/23/2017 09:08 PM, Toralf Förster wrote:
> > I do fuzz test the Tor sources with AFL using the script in [1].
> 
> Hhm, the root cause is the configure option "--enable-expensive-hardening".
> 
> Without that I can continue fuzz testing.
> I do wonder, since when this configure option doesn't play well together with AFL ?

This option enables ASAN.

ASAN requires a lot of extra shadow VM mappings, which it never uses,
but afl still sees them as part of its allocations.

See the afl documentation for details.

T
--
Tim Wilson-Brown (teor)

teor2345 at gmail dot com
PGP C855 6CED 5D90 A0C5 29F6 4D43 450C BA7F 968F 094B
ricochet:ekmygaiu4rzgsk6n
------------------------------------------------------------------------

-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 801 bytes
Desc: Message signed with OpenPGP
URL: <http://lists.torproject.org/pipermail/tor-relays/attachments/20170725/e0fd160e/attachment.sig>