Hi... On Wed, Dec 1, 2010 at 15:17, naveen yadav <[email protected]> wrote: > Hi all, > > I Have following question with regard for 2.6.30 kernel > > If we do double kfree() > > a) Then what will happen?
if we check the code here: (assuming it's using SLOB) http://lxr.linux.no/linux+v2.6.36/mm/slob.c#L519 then I assume it simply detects that it is already freed and returns immediately. > b) Can kernel detect double kfree() ? not sure, but I saw a call to kmemleak facility close to the line I mentioned above...likely it could detect double [k]free() -- regards, Mulyadi Santosa Freelance Linux trainer and consultant blog: the-hydra.blogspot.com training: mulyaditraining.blogspot.com -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to [email protected] Please read the FAQ at http://kernelnewbies.org/FAQ
