On Tue, 18 Apr 2017, Michal Hocko wrote: > Are you even reading those emails? First of all we are talking about > slab here. Secondly I've already pointed out that the BUG_ON(!PageSlab) > in kmem_freepages is already too late because we do operate on a > potential garbage from invalid page...
Before I forget: 1. The patch affects both slab and slub since it patches mm/slab.h and is called by both allocators. 2. The check in the patch we are discussing here when calling kmem_cache_free() will be executing before kmem_freepages() is called in slab.
