On Thu, Dec 28, 2006 at 07:14:39PM +0100, Chitlesh GOORAH wrote: > On 12/14/05, Dave Jones <davej@xxxxxxxxxx> wrote: > > On Wed, Dec 14, 2005 at 12:35:01PM -0500, Gavin Li wrote: > > > > > When I do ldd a.out, it depends linux-gate.so.1, what is it? I can't find it > > > in my whole system. > > > > It's the vdso where vsyscalls live. The kernel provides it. > > > > Dave > > > > I have seen everywhere on internet linux-gate.so.1 => (0xffffe000) > > but why is my linux-gate.so.1 => (0x00732000) Address space randomization. Exec-shield does some things that the upstream kernel doesn't, which could explain the disparity. (or it could be that the examples you saw are from older kernels which didn't have randomization). Dave -- http://www.codemonkey.org.uk