RE: [PATCH] mm/slub.c: re-randomize random_seq if necessary

2019-01-09 Thread Peng Wang
On Wednesday, January 9, 2019 8:14 PM, Matthew Wilcox wrote: > On Wed, Jan 09, 2019 at 05:06:27PM +0800, Peng Wang wrote: > > calculate_sizes() could be called in several places > > like (red_zone/poison/order/store_user)_store() while > > random_seq remains unchanged. > > > > If random_seq is no

Re: [PATCH] mm/slub.c: re-randomize random_seq if necessary

2019-01-09 Thread Matthew Wilcox
On Wed, Jan 09, 2019 at 05:06:27PM +0800, Peng Wang wrote: > calculate_sizes() could be called in several places > like (red_zone/poison/order/store_user)_store() while > random_seq remains unchanged. > > If random_seq is not NULL in calculate_sizes(), re-randomize it. Why do we want to re-random