From owner-freebsd-current Tue Nov 26 23:43:58 2002 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 E9EB637B429 for ; Tue, 26 Nov 2002 23:43:56 -0800 (PST) Received: from harmony.village.org (rover.bsdimp.com [204.144.255.66]) by mx1.FreeBSD.org (Postfix) with ESMTP id E094A43EA9 for ; Tue, 26 Nov 2002 23:43:55 -0800 (PST) (envelope-from imp@bsdimp.com) Received: from localhost (warner@rover2.village.org [10.0.0.1]) by harmony.village.org (8.12.3/8.12.3) with ESMTP id gAR7htpk054746; Wed, 27 Nov 2002 00:43:55 -0700 (MST) (envelope-from imp@bsdimp.com) Date: Wed, 27 Nov 2002 00:43:23 -0700 (MST) Message-Id: <20021127.004323.65008236.imp@bsdimp.com> To: aurelien.nephtali@wanadoo.fr Cc: current@FreeBSD.ORG Subject: Re: PANIC: "Most recently used by bus" From: "M. Warner Losh" In-Reply-To: <20021127.003130.15920342.imp@bsdimp.com> References: <20021126192147.GB530@nebula.wanadoo.fr> <20021127.003130.15920342.imp@bsdimp.com> X-Mailer: Mew version 2.1 on Emacs 21.2 / Mule 5.0 (SAKAKI) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG In message: <20021127.003130.15920342.imp@bsdimp.com> "M. Warner Losh" writes: : In message: <20021126192147.GB530@nebula.wanadoo.fr> : Aurelien Nephtali writes: : : I've got a panic by unplugging my NIC then plugging it again and then doing : : a dhclient . I've attached some informations about the panic. : : Kill the dhclient after you unplug the interface, but before you plug : it back in. This can also be caused by a bug in the network driver. If it failed to attach for some reason, but created (and not destroyed) a mutex, then the WITNESS code will modify the softc after it has been freed, trigging the panic you described. Warner To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message