Hello Dave, While I was investigating ARM support for CONFIG_SPARSEMEM, I noticed read_module_unwind_table in unwind_arm.c would call free(tbl->idx) twice if(!readmem(idx_start, KVADDR, tbl->idx, idx, size, "module unwind index table", RETURN_ON_ERROR)) I think you can remove free(tbl->idx) which just before "return FALSE". Takuo -- Crash-utility mailing list Crash-utility@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/crash-utility