[ACPI] [PATCH] Debugging memory deallocation ...

[Hrvoje H. <hrv...@zg...>]

Hi!

Following patch make acpi_ut_free_and_track function to CHECK address BEFORE deallocating it.


Hrvoje

--- /usr/src/linux-2.4.22/drivers/acpi/utilities/utalloc.c      2003-08-25 13:44:41.000000000 +0200
+++ utalloc.c   2003-09-15 20:46:37.000000000 +0200
@@ -564,7 +562,7 @@
        char                            *module,
        u32                             line)
 {
-       struct acpi_debug_mem_block     *debug_block;
+       struct acpi_debug_mem_block     *debug_block,*element;
        acpi_status                     status;


@@ -581,6 +579,13 @@
        debug_block = ACPI_CAST_PTR (struct acpi_debug_mem_block,
                          (((char *) allocation) - sizeof (struct acpi_debug_mem_header)));

+       element = acpi_ut_find_allocation (ACPI_MEM_LIST_GLOBAL, debug_block);
+       if( element == NULL )
+       {
+               ACPI_REPORT_ERROR (("Trying to free unallocated segment\n"))
+               return_VOID;
+       }
+
        acpi_gbl_memory_lists[ACPI_MEM_LIST_GLOBAL].total_freed++;
        acpi_gbl_memory_lists[ACPI_MEM_LIST_GLOBAL].current_total_size -= debug_block->size;