Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753182AbZF0WuA (ORCPT ); Sat, 27 Jun 2009 18:50:00 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752081AbZF0Wtw (ORCPT ); Sat, 27 Jun 2009 18:49:52 -0400 Received: from smtp-4.concepts.nl ([213.197.30.111]:54491 "EHLO smtp-4.concepts.nl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751419AbZF0Wtv (ORCPT ); Sat, 27 Jun 2009 18:49:51 -0400 X-Greylist: delayed 1470 seconds by postgrey-1.27 at vger.kernel.org; Sat, 27 Jun 2009 18:49:51 EDT Message-ID: <4A469C4A.5050309@hotmail.com> Date: Sun, 28 Jun 2009 00:25:14 +0200 From: Arno Schuring User-Agent: Mozilla-Thunderbird 2.0.0.19 (X11/20090103) MIME-Version: 1.0 To: linux-kernel@vger.kernel.org Subject: 2.6.31-rc1 WARNING: at drivers/char/tty_ldisc.c:210 X-Enigmail-Version: 0.95.0 Content-Type: text/plain; charset=ISO-8859-15 Content-Transfer-Encoding: 7bit X-Concepts-MailScanner-Information: Please contact abuse@concepts.nl for more information X-Concepts-MailScanner-ID: 1MKgKl-0006Pd-Eb X-Concepts-MailScanner: Found to be clean X-Concepts-MailScanner-SpamCheck: X-Concepts-MailScanner-From: aelschuring@hotmail.com Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3746 Lines: 79 Hello to all, Current 2.6.31-rc1 is triggering a warning on my machine (x86 non-smp). I can reliably trigger this warning by booting single-user and performing telinit 2 (which continues normal boot). I'm testing with Radeon kernel modesetting enabled on an R300 card, but I'm not sure if that is relevant. First of all: if I'm posting to the wrong list, please kindly redirect me to the correct location. I have found one reference to this warning, it was on the PPC list: http://www.mail-archive.com/linuxppc-dev@lists.ozlabs.org/msg34679.html Since I'm not on ppc, I don't think I should raise the issue there. However, the thread suggested to enable TTY_DEBUG_HANGUP, which I have done. The relevant warning and backtrace is below. I can provide the full dmesg and .config (or other information), please let me know how I can best provide more information. Besides the warning, I have not noticed any problems on my machine: all terminals are still functional and X is running as well. If this is a harmless message, I'm quite happy to just ignore it just as well. Detailed information: aschuring@neminis:~/work/linux-GIT$ git describe HEAD v2.6.31-rc1-114-g4075ea8 [ 53.764065] WARNING: at drivers/char/tty_ldisc.c:210 tty_ldisc_put+0x77/0x90() [ 53.764069] Hardware name: [ 53.764070] Modules linked in: ipv6 ext3 jbd fuse dm_crypt dm_mod w83627hf hwmon_vid i2c_sis96x parport_pc evdev parport pcspkr processor serio_raw button xfs exportfs usbhid hid usb_storage ohci_hcd sg ehci_hcd sr_mod cdrom sd_mod usbcore nls_base floppy thermal fan thermal_sys [ 53.764102] Pid: 2521, comm: sh Not tainted 2.6.31-rc1 #9 [ 53.764105] Call Trace: [ 53.764110] [] ? tty_ldisc_put+0x77/0x90 [ 53.764114] [] ? tty_ldisc_put+0x77/0x90 [ 53.764121] [] ? warn_slowpath_common+0x76/0xd0 [ 53.764125] [] ? tty_ldisc_put+0x77/0x90 [ 53.764129] [] ? warn_slowpath_null+0x13/0x20 [ 53.764133] [] ? tty_ldisc_put+0x77/0x90 [ 53.764137] [] ? tty_ldisc_reinit+0x13/0x40 [ 53.764140] [] ? tty_ldisc_hangup+0xff/0x1a0 [ 53.764149] [] ? do_tty_hangup+0xf2/0x410 [ 53.764153] [] ? tty_vhangup+0x2c/0x40 [ 53.764161] [] ? remove_vma+0x0/0x60 [ 53.764166] [] ? exit_mmap+0x11f/0x170 [ 53.764174] [] ? filp_close+0x47/0x80 [ 53.764178] [] ? get_current_tty+0x38/0x60 [ 53.764184] [] ? lock_kernel+0x18/0x30 [ 53.764189] [] ? disassociate_ctty+0x3a/0x250 [ 53.764194] [] ? do_exit+0x725/0x750 [ 53.764202] [] ? recalc_sigpending+0xa/0x30 [ 53.764207] [] ? dequeue_signal+0x2f/0x1d0 [ 53.764211] [] ? do_group_exit+0x2b/0xa0 [ 53.764215] [] ? get_signal_to_deliver+0x194/0x490 [ 53.764220] [] ? do_notify_resume+0xcd/0x830 [ 53.764230] [] ? task_has_perm+0x6b/0x90 [ 53.764237] [] ? security_task_wait+0xc/0x10 [ 53.764241] [] ? wait_consider_task+0x75/0x940 [ 53.764250] [] ? remove_wait_queue+0x36/0x50 [ 53.764254] [] ? do_wait+0x1b5/0x2f0 [ 53.764258] [] ? default_wake_function+0x0/0x10 [ 53.764262] [] ? sys_wait4+0x90/0xd0 [ 53.764266] [] ? work_notifysig+0x13/0x19 [ 53.764270] ---[ end trace 1c55ed9a5fd77151 ]--- [ 53.764303] error attempted to write to tty [0x(null)] = NULL Kind regards, Arno Schuring -- 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/