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diff --git a/mm/slub.c b/mm/slub.c > index 20cb4f3b636d..73b2cfd0e123 100644 > --- a/mm/slub.c > +++ b/mm/slub.c > @@ -2797,6 +2797,7 @@ static void free_empty_sheaf(struct kmem_cache *s, struct slab_sheaf *sheaf) > if (s->flags & SLAB_KMALLOC) > mark_obj_codetag_empty(sheaf); > > + WARN_ON(sheaf->size > 0); > kfree(sheaf); > > stat(s, SHEAF_FREE); > @@ -2828,6 +2829,7 @@ static int refill_sheaf(struct kmem_cache *s, struct slab_sheaf *sheaf, > return 0; > } > > +static void sheaf_flush_unused(struct kmem_cache *s, struct slab_sheaf *sheaf); > > static struct slab_sheaf *alloc_full_sheaf(struct kmem_cache *s, gfp_t gfp) > { > @@ -2837,6 +2839,7 @@ static struct slab_sheaf *alloc_full_sheaf(struct kmem_cache *s, gfp_t gfp) > return NULL; > > if (refill_sheaf(s, sheaf, gfp | __GFP_NOMEMALLOC | __GFP_NOWARN)) { > + sheaf_flush_unused(s, sheaf); > free_empty_sheaf(s, sheaf); > return NULL; > } > @@ -4623,6 +4626,7 @@ __pcs_replace_empty_main(struct kmem_cache *s, struct slub_percpu_sheaves *pcs, > * we must be very low on memory so don't bother > * with the barn > */ > + sheaf_flush_unused(s, empty); > free_empty_sheaf(s, empty); > } > } else { This won't fix any kmemleak reports because kmemleak couldn't detect this in the first place. kmemleak doesn't know that those objects exist until they are allocated and kmemleak_alloc() is called for them. -- Cheers, Harry / Hyeonggon