On 1/24/25 09:37, Marco Elver wrote: > On Fri, 24 Jan 2025 at 09:13, Vlastimil Babka <vbabka@xxxxxxx> wrote: >> >> On 1/23/25 23:44, Christoph Lameter via B4 Relay wrote: >> > From: Christoph Lameter <cl@xxxxxxxxx> >> > >> > KFENCE manages its own pools and redirects regular memory allocations >> > to those pools in a sporadic way. The usual memory allocator features >> > like NUMA, memory policies and pfmemalloc are not supported. >> >> Can it also violate __GFP_THISNODE constraint? That could be a problem, I >> recall a problem in the past where it could have been not honoured by the >> page allocator, leading to corruption of slab lists. > > KFENCE does not sample page allocator allocations. Is kmalloc() > allowed to take __GFP_THISNODE? Yeah and SLUB is honouring it.
