Date: Fri, 5 Dec 2014 14:03:25 -0800 From: Paul Pluzhnikov <ppluzhnikov@...il.com> To: oss-security@...ts.openwall.com Cc: Sriraman Tallam <tmsriram@...gle.com> Subject: Re: Offset2lib: bypassing full ASLR on 64bit Linux On Fri, Dec 5, 2014 at 1:07 PM, Hanno Böck <hanno@...eck.de> wrote: > > On Fri, 05 Dec 2014 15:55:27 -0500 > Daniel Micay <danielmicay@...il.com> wrote: > > > The context of the architecture you're testing on is required for the > > numbers to be meaningful. It's known to be expensive on x86 and should > > be nearly free elsewhere if there aren't compiler / linker perf bugs. FWIW, we've measured 1-2.5% degradation in our highly-optimized x86_64 binaries, and Sri's patch avoids most of it. Sri also tells me that H.J. Lu committed a patch for pie+copyrelocs to GNU-ld, and made the GCC copyreloc optimization (which has been committed) the default when linker support is available. -- Paul Pluzhnikov
Powered by blists - more mailing lists
Please check out the Open Source Software Security Wiki, which is counterpart to this mailing list.
Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.