On Fri, Aug 09, 2019 at 10:11:58PM +0800, Miles Chen wrote: > On Thu, 2019-08-08 at 19:46 -0700, Matthew Wilcox wrote: > > On Fri, Aug 09, 2019 at 09:08:37AM +0800, miles.chen@xxxxxxxxxxxx wrote: > > > INFO: Slab 0x(____ptrval____) objects=25 used=10 fp=0x(____ptrval____) > > > > ... you don't have any randomness on your platform? > > We have randomized base on our platforms. Look at initialize_ptr_random(). If you have randomness, then you get a siphash_1u32() of the address. With no randomness, you get this ___ptrval___ string instead.