On 02/22/2013 07:39 PM, Christoph Lameter wrote: > On Fri, 22 Feb 2013, Glauber Costa wrote: > >> As I've mentioned in the description, the real bug is from partial slabs >> being temporarily in the cpu_slab during a recent allocation and >> therefore unreachable through the partial list. > > The bootstrap code does not use cpu slabs but goes directly to the slab > pages. See early_kmem_cache_node_alloc. > That differs from what I am seeing here. I can trace an early __slab_alloc allocation from the kmem_cache_node cache, very likely coming from the kmem_cache boot cache creation. It takes the page out of the partial list and moves it to the cpu_slab. After that, that particular page becomes unreachable for bootstrap. At this point, we are already slab_state == PARTIAL, while init_kmem_cache_nodes will only differentiate against slab_state == DOWN. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>