Re: [PATCH 1/2] stackprotector: add stack smashing protectorgeneric implementation

[Carmelo AMOROSO]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On 1/11/2011 6:30 AM, Mike Frysinger wrote:
> what are you using to test this ? is there a simple strcpy or similar
> code you run as a kernel module that'll allow me to verify ?
> -mike
> 
Hi Mike,
yes, a simple kernel module with a init func that use strcpy or memcpy
to write over the boundaries of an local array variable is enough.
As you know, the array has to be larger than 8 bytes to match with the
gcc heuristic and generate the call to the guard.

Cheers,
Carmelo



-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.10 (MingW32)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/

iEYEARECAAYFAk0sfZIACgkQoRq/3BrK1s8kfwCeIjayIoaHapweG53icp1yoCN+
ypMAnA08chxTu49eP4QYTQU8UzO4PVpp
=ysi4
-----END PGP SIGNATURE-----
¢éì®&Þ~º&¶¬–+-±éÝ¥Šw®žË±Êâmébžìdz¹Þ)í…æèw*jg¬±¨¶‰šŽŠÝj/êäz¹ÞŠà2ŠÞ¨è­Ú&¢)ß«a¶Úþø®G«éh®æj:+v‰¨Šwè†Ù>Wš±êÞiÛaxPjØm¶ŸÿÃ-»+ƒùdš_