Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261773AbUKHHmg (ORCPT ); Mon, 8 Nov 2004 02:42:36 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261769AbUKHHmg (ORCPT ); Mon, 8 Nov 2004 02:42:36 -0500 Received: from fw.osdl.org ([65.172.181.6]:2524 "EHLO mail.osdl.org") by vger.kernel.org with ESMTP id S261773AbUKHHmd (ORCPT ); Mon, 8 Nov 2004 02:42:33 -0500 Date: Sun, 7 Nov 2004 23:42:25 -0800 From: Andrew Morton To: Ingo Molnar Cc: diffie@gmail.com, linux-kernel@vger.kernel.org, diffie@blazebox.homeip.net, Greg KH Subject: Re: 2.6.10-rc1-mm3 Message-Id: <20041107234225.02c2f9b6.akpm@osdl.org> In-Reply-To: <20041108075934.GA4602@elte.hu> References: <9dda349204110611043e093bca@mail.gmail.com> <20041107024841.402c16ed.akpm@osdl.org> <20041108075934.GA4602@elte.hu> X-Mailer: Sylpheed version 0.9.7 (GTK+ 1.2.10; i386-redhat-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2053 Lines: 42 Ingo Molnar wrote: > > > Weird. Can you send me the .config? > > reproducible here too with Paul's .config. Me too. The problem starts out at tty_register_driver(): if ( !(driver->flags & TTY_DRIVER_NO_DEVFS) ) { for(i = 0; i < driver->num; i++) tty_register_device(driver, i, NULL); That NULL for the struct device* propagates all the way down to class_hotplug_name() and bang. This bug is present in Linus's tree. 0xc026d8ce in class_hotplug_name (kset=0xc03ccf80, kobj=0xc17b3614) at drivers/base/class.c:278 278 return class_dev->class->name; (gdb) bt #0 0xc026d8ce in class_hotplug_name (kset=0xc03ccf80, kobj=0xc17b3614) at drivers/base/class.c:278 #1 0xc02164eb in kobject_hotplug (kobj=0xc17b3614, action=0) at lib/kobject_uevent.c:243 #2 0xc0215f3a in kobject_add (kobj=0xc17b3614) at lib/kobject.c:188 #3 0xc026db46 in class_device_add (class_dev=0xc17b360c) at drivers/base/class.c:401 #4 0xc026dc0d in class_device_register (class_dev=0xc17b360c) at drivers/base/class.c:427 #5 0xc026e09f in class_simple_device_add (cs=0xcffa3d80, dev=0, device=0x0, fmt=0x0) at drivers/base/class_simple.c:153 #6 0xc0254b8d in tty_register_device (driver=0xc1781c00, index=0, device=0x0) at drivers/char/tty_io.c:2708 #7 0xc0254ed0 in tty_register_driver (driver=0xc1781c00) at drivers/char/tty_io.c:2845 #8 0xc0577a1b in legacy_pty_init () at drivers/char/pty.c:299 #9 0xc0577be9 in pty_init () at drivers/char/pty.c:406 #10 0xc05647da in do_initcalls () at init/main.c:625 #11 0xc056484e in do_basic_setup () at init/main.c:668 #12 0xc0100410 in init (unused=0x80) at init/main.c:736 #13 0xc0104255 in kernel_thread_helper () at arch/i386/kernel/process.c:293 I assume that tty_register_driver is at fault, but will call in Greg for adjudication. - 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/