From owner-freebsd-current@FreeBSD.ORG Mon Jan 17 22:07:35 2005 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id DF57116A4D0 for ; Mon, 17 Jan 2005 22:07:35 +0000 (GMT) Received: from transport.cksoft.de (transport.cksoft.de [62.111.66.27]) by mx1.FreeBSD.org (Postfix) with ESMTP id 15C8943D39 for ; Mon, 17 Jan 2005 22:07:35 +0000 (GMT) (envelope-from bzeeb-lists@lists.zabbadoz.net) Received: from transport.cksoft.de (localhost [127.0.0.1]) by transport.cksoft.de (Postfix) with ESMTP id 28B9A1FF9AF for ; Mon, 17 Jan 2005 23:07:33 +0100 (CET) Received: by transport.cksoft.de (Postfix, from userid 66) id 26E0A1FF9AD; Mon, 17 Jan 2005 23:07:31 +0100 (CET) Received: by mail.int.zabbadoz.net (Postfix, from userid 1060) id 454DF1537B; Mon, 17 Jan 2005 22:07:20 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by mail.int.zabbadoz.net (Postfix) with ESMTP id 3A7A015329 for ; Mon, 17 Jan 2005 22:07:21 +0000 (UTC) Date: Mon, 17 Jan 2005 22:07:21 +0000 (UTC) From: "Bjoern A. Zeeb" X-X-Sender: bz@e0-0.zab2.int.zabbadoz.net To: FreeBSD current mailing list Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-Virus-Scanned: by AMaViS cksoft-s20020300-20031204bz on transport.cksoft.de Subject: LOR: kern_descrip.c:2277,2278 X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 17 Jan 2005 22:07:36 -0000 Hi, I have added the following as LOR #055 to "the LOR page"[1]. lock order reversal 1st 0xffffffff80c3a9e8 sleep mtxpool (sleep mtxpool) @ sys/kern/kern_descrip.c:2277 2nd 0xffffff00222d8a48 filedesc structure (filedesc structure) @ sys/kern/kern_descrip.c:2278 KDB: stack backtrace: witness_checkorder() at witness_checkorder+0x5f1 _mtx_lock_flags() at _mtx_lock_flags+0x4a dupfdopen() at dupfdopen+0x320 kern_open() at kern_open+0x5de syscall() at syscall+0x4ab Xfast_syscall() at Xfast_syscall+0xa8 --- syscall (5, FreeBSD ELF64, open), rip = 0x80077e7d0, rsp = 0x7fffffffe6f8, rbp = 0x7fffffffec70 --- I can easily reproduce it every boot. It seems to be triggered by Capi4BSD[2] framework which I incorporated in my private tree. Can someone please comment on this ? [1] http://sources.zabbadoz.net/freebsd/lor.html#055 [2] http://lists.freebsd.org/pipermail/freebsd-isdn/2004-December/000308.html -- Bjoern A. Zeeb bzeeb at Zabbadoz dot NeT