From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alan Cox Subject: Re: [BUG] NULL pointer dereference in uart_write_room(). Date: Mon, 5 May 2008 11:30:55 +0100 Message-ID: <20080505113055.5284052e@core> References: <261636618@web.de> <200805022300.GIB30385.FJOVHQSMFtOOFL@I-love.SAKURA.ne.jp> <200805041716.DDG43279.JOSMHVFOFFQLOt@I-love.SAKURA.ne.jp> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Return-path: Received: from outpipe-village-512-1.bc.nu ([81.2.110.250]:34519 "EHLO lxorguk.ukuu.org.uk" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1751348AbYEEKjt (ORCPT ); Mon, 5 May 2008 06:39:49 -0400 In-Reply-To: <200805041716.DDG43279.JOSMHVFOFFQLOt@I-love.SAKURA.ne.jp> Sender: linux-serial-owner@vger.kernel.org List-Id: linux-serial@vger.kernel.org To: Tetsuo Handa Cc: rmk@arm.linux.org.uk, linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org > (5) uart_remove_one_port() is called by serial8250_register_port() > since ttyS0 is already in use but it is requested to be once removed. That means 8250_pnp is taking over and then trying to delete the console, so its breakage in the serial layer glue. Perhaps Russell has some ideas as its hard to tell what he intended to happen originally. Alan