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Add the __counted_by compiler attribute to the flexible array member attrs to improve access bounds-checking via CONFIG_UBSAN_BOUNDS and CONFIG_FORTIFY_SOURCE. Increment num before adding a new param_attribute to the attrs array and adjust the array index accordingly. Increment num immediately after the first reallocation such that the reallocation for the NULL terminator only needs to add 1 (instead of 2) to mk->mp->num. Use struct_size() instead of manually calculating the size for the reallocation. Use krealloc_array() for the additional NULL terminator. Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Luis Chamberlain <mcgrof@kernel.org> Cc: Nathan Chancellor <nathan@kernel.org> Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev> Reviewed-by: Luis Chamberlain <mcgrof@kernel.org> Link: https://lore.kernel.org/r/20250213221352.2625-3-thorsten.blum@linux.dev Signed-off-by: Petr Pavlu <petr.pavlu@suse.com>