Re: [Crash-utility] More fixes for kmem on slabs

How's this work for you? (patch also attached) --- crash-6.0.3/memory.c.orig +++ crash-6.0.3/memory.c @@ -7977,14 +7977,32 @@ kmem_cache_downsize(void) char *cache_buf; uint buffer_size; int nr_node_ids; + int nr_cpu_ids; if ((THIS_KERNEL_VERSION < LINUX(2,6,22)) || - (vt->flags & NODELISTS_IS_PTR) || !(vt->flags & PERCPU_KMALLOC_V2_NODES) || !kernel_symbol_exists("cache_cache") || !MEMBER_EXISTS("kmem_cache", "buffer_size")) return; + if (vt->flags & NODELISTS_IS_PTR) { + /* + * kmem_cache.array[] is actually sized by + * the number of cpus; real value is nr_cpu_ids, + * but fallback is kt->cpus. + */ + if (kernel_symbol_exists("nr_cpu_ids")) + get_symbol_data("nr_cpu_ids", sizeof(int), + &nr_cpu_ids); + else + nr_cpu_ids = kt->cpus; + + ARRAY_LENGTH(kmem_cache_s_array) = nr_cpu_ids; + ASSIGN_SIZE(kmem_cache_s) = OFFSET(kmem_cache_s_array) + + sizeof(ulong) * nr_cpu_ids; + return; + } + cache_buf = GETBUF(SIZE(kmem_cache_s)); if (!readmem(symbol_value("cache_cache"), KVADDR, cache_buf, Dave