Hello, I notice that struct __wait_queue changed somewhere around 2.6.15 and as a result the waitq command fails because of the missing member "task" which was replaced by the member "private" containing the same information. The attached patch fixes this, tested on RHEL4 and RHEL5 i686 only. Regards, Alan Tyson, HP. --- kernel.c.orig 2007-10-30 15:51:54.000000000 +0000 +++ kernel.c 2007-11-06 10:12:25.000000000 +0000 @@ -390,8 +390,12 @@ kernel_init() STRUCT_SIZE_INIT(__wait_queue, "__wait_queue"); if (VALID_STRUCT(__wait_queue)) { - MEMBER_OFFSET_INIT(__wait_queue_task, - "__wait_queue", "task"); + if (MEMBER_EXISTS("__wait_queue", "task")) + MEMBER_OFFSET_INIT(__wait_queue_task, + "__wait_queue", "task"); + else + MEMBER_OFFSET_INIT(__wait_queue_task, + "__wait_queue", "private"); MEMBER_OFFSET_INIT(__wait_queue_head_task_list, "__wait_queue_head", "task_list"); MEMBER_OFFSET_INIT(__wait_queue_task_list,