From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261450AbTEEXXp (ORCPT ); Mon, 5 May 2003 19:23:45 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261506AbTEEXXp (ORCPT ); Mon, 5 May 2003 19:23:45 -0400 Received: from gateway-1237.mvista.com ([12.44.186.158]:499 "EHLO av.mvista.com") by vger.kernel.org with ESMTP id S261450AbTEEXXo (ORCPT ); Mon, 5 May 2003 19:23:44 -0400 Message-ID: <3EB6F546.6010802@mvista.com> Date: Mon, 05 May 2003 16:35:34 -0700 From: george anzinger User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.2) Gecko/20021202 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Aniruddha M Marathe CC: linux-kernel@vger.kernel.org, Chandrashekhar RS , Andrew Morton Subject: Re: [BUG] problem with timer_create(2) for SIGEV_NONE ?? References: In-Reply-To: Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Aniruddha M Marathe wrote: > George, > > timer_create(2) fails in the case where sigev_notify parameter of > sigevent structure is SIGEV_NONE. I believe this should not happen. > ~snip~ > > Line 377: > SIGEV_NONE & ~(SIGEV_SIGNAL | SIGEV_THREAD_ID) > = 001 & ~(000 | 100) > = 001 & ~(100) > = 001 & 011 > = 001 > therefore the if condition is true > therefore the function returns NULL from line 378. > > Now in sys_timer_create() at line number 462 > Process = NULL > > Now at line 489 > if (!process) becomes TRUE > and function returns with EINVAL > > Is my analysis right? If so can you comment on this behaviour? > Looks like a bug :( I feel a patch coming on... -- George Anzinger george@mvista.com High-res-timers: http://sourceforge.net/projects/high-res-timers/ Preemption patch: http://www.kernel.org/pub/linux/kernel/people/rml