Re: [Crash-utility] "zero-size memory allocation!" is back for Linux 3.1

In include/linux/slab_def.h circa linux 3.0, this def for field nodelists: struct kmem_cache { /* 1) per-cpu data, touched during every alloc/free */ struct array_cache *array[NR_CPUS]; ... struct kmem_list3 *nodelists[MAX_NUMNODES]; /* * Do not add fields after nodelists[] */ }; Became this in 3.1: struct kmem_cache { ... /* 6) per-cpu/per-node data, touched during every alloc/free */ /* * We put array[] at the end of kmem_cache, because we want to size * this array to nr_cpu_ids slots instead of NR_CPUS * (see kmem_cache_init()) * We still use [NR_CPUS] and not [1] or [0] because cache_cache * is statically defined, so we reserve the max number of cpus. */ struct kmem_list3 **nodelists; struct array_cache *array[NR_CPUS]; /* * Do not add fields after array[] */ }; Which causes this in crash/memory.c:vm_init() ARRAY_LENGTH_INIT(vt->kmem_cache_len_nodes, NULL, "kmem_cache.nodelists", NULL, 0); to set vt->kmem_cache_len_nodes to 0, and leads to the initialization failure when max_cpudata_limit calls getbuf with a size of 0. Got a fix in the works yet? Thanks, Bob Montgomery