From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ben Greear Subject: Re: [BUG] NULL pointer dereference in uart_write_room(). Date: Tue, 06 May 2008 09:03:09 -0700 Message-ID: <4820813D.6050608@candelatech.com> References: <261636618@web.de> <200805022300.GIB30385.FJOVHQSMFtOOFL@I-love.SAKURA.ne.jp> <200805041716.DDG43279.JOSMHVFOFFQLOt@I-love.SAKURA.ne.jp> <20080505113055.5284052e@core> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from mail.candelatech.com ([66.165.47.212]:36237 "EHLO ns3.lanforge.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752619AbYEFQ2P (ORCPT ); Tue, 6 May 2008 12:28:15 -0400 In-Reply-To: <20080505113055.5284052e@core> Sender: linux-serial-owner@vger.kernel.org List-Id: linux-serial@vger.kernel.org To: Alan Cox Cc: Tetsuo Handa , rmk@arm.linux.org.uk, linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org Alan Cox wrote: >> (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. > For what it's worth, I've been seeing this problem since about 2.6.23 on several different systems, and will be happy to test patches. The work-around of changing the .config file will be fine in the meantime, it seems. Thanks, Ben > Alan > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ > -- Ben Greear Candela Technologies Inc http://www.candelatech.com