On Sat, 9 Nov 2019, Yu Zhao wrote: > > struct page *page, *h; > > + unsigned long *map = bitmap_alloc(oo_objects(s->max), GFP_KERNEL); > > + > > + if (!map) > > + return; > > What would happen if we are trying to allocate from the slab that is > being shut down? And shouldn't the allocation be conditional (i.e., > only when CONFIG_SLUB_DEBUG=y)? Kmalloc slabs are never shut down. The allocation does not hurt and CONFIG_SLUB_DEBUG is on in most configurations.
