From owner-freebsd-current@FreeBSD.ORG Thu May 12 17:07:28 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 8535216A4CE for ; Thu, 12 May 2005 17:07:28 +0000 (GMT) Received: from relay03.pair.com (relay03.pair.com [209.68.5.17]) by mx1.FreeBSD.org (Postfix) with SMTP id E5F2F43D54 for ; Thu, 12 May 2005 17:07:27 +0000 (GMT) (envelope-from pho@holm.cc) Received: (qmail 11066 invoked from network); 12 May 2005 17:07:26 -0000 Received: from unknown (HELO peter.osted.lan) (unknown) by unknown with SMTP; 12 May 2005 17:07:26 -0000 X-pair-Authenticated: 80.161.118.233 Received: from peter.osted.lan (localhost.osted.lan [127.0.0.1]) by peter.osted.lan (8.13.1/8.13.1) with ESMTP id j4CH7PPg091510 for ; Thu, 12 May 2005 19:07:25 +0200 (CEST) (envelope-from pho@peter.osted.lan) Received: (from pho@localhost) by peter.osted.lan (8.13.1/8.13.1/Submit) id j4CH7Pqn091509 for current@freebsd.org; Thu, 12 May 2005 19:07:25 +0200 (CEST) (envelope-from pho) Date: Thu, 12 May 2005 19:07:24 +0200 From: Peter Holm To: current@freebsd.org Message-ID: <20050512170724.GA91183@peter.osted.lan> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.4.2.1i Subject: Livelock with KTR dump 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: Thu, 12 May 2005 17:07:28 -0000 With GENERIC HEAD from May 10 17:58 UTC I got a livelock. This is old and reoccurring problem that I only get while stress testing. The livelock can be unlocked by issuing a kill from ddb to the curthread. More info at http://www.holm.cc/stress/log/cons129.html, which also includes a KTR dump (KTR_INTR|KTR_PROC|KTR_RUNQ|KTR_SYSC|KTR_CLK| KTR_TRAP) -- Peter Holm