From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754595Ab0DTMqP (ORCPT ); Tue, 20 Apr 2010 08:46:15 -0400 Received: from hawking.rebel.net.au ([203.20.69.83]:45391 "EHLO hawking.rebel.net.au" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754546Ab0DTMqN (ORCPT ); Tue, 20 Apr 2010 08:46:13 -0400 Message-ID: <4BCDA20E.9050601@davidnewall.com> Date: Tue, 20 Apr 2010 22:16:06 +0930 From: David Newall User-Agent: Thunderbird 2.0.0.23 (X11/20090817) MIME-Version: 1.0 To: Linux Kernel Mailing List Subject: warning at serial_write_room and serial_write Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello all, What do the warnings, below, mean? Thanks, David Apr 20 20:03:04 ubuntu xinetd[2509]: added service telnet [file=/etc/inetd.conf] [line=1] Apr 20 20:03:04 ubuntu xinetd[2509]: xinetd Version 2.3.14 started with libwrap loadavg options compiled i n. Apr 20 20:03:04 ubuntu xinetd[2509]: Started working: 2 available services Apr 20 20:03:04 ubuntu kernel: [ 87.409895] ------------[ cut here ]------------ Apr 20 20:03:04 ubuntu kernel: [ 87.409931] WARNING: at /build/buildd/linux-2.6.28/drivers/usb/serial/usb-serial.c:326 serial_write_room+0x70/0x80 [usbserial]() Apr 20 20:03:04 ubuntu kernel: [ 87.409972] Modules linked in: ppdev parport_pc lp parport pl2303 usbserial serio_raw snd_usb_audio snd_usb_lib cm109 snd_rawmidi snd_seq_device snd_pcm snd_hwdep snd_timer snd soundcore snd_page_alloc pcspkr r6040 mii usbhid aufs exportfs fbcon tileblit font bitblit softcursor Apr 20 20:03:04 ubuntu kernel: [ 87.410199] Pid: 6, comm: events/0 Not tainted 2.6.28-15-generic #49-Ubuntu Apr 20 20:03:04 ubuntu kernel: [ 87.410227] Call Trace: Apr 20 20:03:04 ubuntu kernel: [ 87.410274] [] ? printk+0x18/0x1a Apr 20 20:03:04 ubuntu kernel: [ 87.410315] [] warn_on_slowpath+0x54/0x80 Apr 20 20:03:04 ubuntu kernel: [ 87.410370] [] ? finish_task_switch+0xb0/0xe0 Apr 20 20:03:04 ubuntu kernel: [ 87.410405] [] ? _spin_unlock_irqrestore+0x23/0x40 Apr 20 20:03:04 ubuntu kernel: [ 87.410444] [] ? dma_pool_alloc+0x10f/0x120 Apr 20 20:03:04 ubuntu kernel: [ 87.410477] [] ? dma_pool_alloc+0x10f/0x120 Apr 20 20:03:04 ubuntu kernel: [ 87.410530] [] serial_write_room+0x70/0x80 [usbserial] Apr 20 20:03:04 ubuntu kernel: [ 87.410573] [] ? handshake_on_error_set_halt+0x2a/0x90 Apr 20 20:03:04 ubuntu kernel: [ 87.410609] [] tty_write_room+0x18/0x20 Apr 20 20:03:04 ubuntu kernel: [ 87.410653] [] opost+0x1a/0x260 Apr 20 20:03:04 ubuntu kernel: [ 87.410683] [] echo_char+0x2d/0x70 Apr 20 20:03:04 ubuntu kernel: [ 87.410713] [] n_tty_receive_char+0x157/0x6f0 Apr 20 20:03:04 ubuntu kernel: [ 87.410748] [] ? qh_schedule+0x169/0x2e0 Apr 20 20:03:04 ubuntu kernel: [ 87.410780] [] n_tty_receive_buf+0x250/0x4b0 Apr 20 20:03:04 ubuntu kernel: [ 87.410814] [] ? update_curr+0x8d/0x1e0 Apr 20 20:03:04 ubuntu kernel: [ 87.410850] [] ? dequeue_entity+0x16/0x2a0 Apr 20 20:03:04 ubuntu kernel: [ 87.410883] [] ? _spin_unlock_irqrestore+0x23/0x40 Apr 20 20:03:04 ubuntu kernel: [ 87.410918] [] ? _spin_unlock_irqrestore+0x23/0x40 Apr 20 20:03:04 ubuntu init: set_tcp_rto_max main process (2556) terminated with status 2 Apr 20 20:03:04 ubuntu kernel: [ 87.410953] [] flush_to_ldisc+0xee/0x1b0 Apr 20 20:03:04 ubuntu kernel: [ 87.410983] [] ? flush_to_ldisc+0x0/0x1b0 Apr 20 20:03:04 ubuntu kernel: [ 87.411014] [] run_workqueue+0x8d/0x150 Apr 20 20:03:04 ubuntu kernel: [ 87.411051] [] ? prepare_to_wait+0x3a/0x70 Apr 20 20:03:04 ubuntu kernel: [ 87.411080] [] worker_thread+0x88/0xf0 Apr 20 20:03:04 ubuntu kernel: [ 87.411110] [] ? autoremove_wake_function+0x0/0x50 Apr 20 20:03:04 ubuntu kernel: [ 87.411140] [] ? worker_thread+0x0/0xf0 Apr 20 20:03:04 ubuntu kernel: [ 87.411169] [] kthread+0x3c/0x70 Apr 20 20:03:04 ubuntu kernel: [ 87.411197] [] ? kthread+0x0/0x70 Apr 20 20:03:05 ubuntu kernel: [ 87.411231] [] kernel_thread_helper+0x7/0x10 Apr 20 20:03:05 ubuntu kernel: [ 87.411256] ---[ end trace 62523b8bb1bd4d2e ]--- Apr 20 20:03:05 ubuntu kernel: [ 87.411307] ------------[ cut here ]------------ Apr 20 20:03:05 ubuntu kernel: [ 87.411330] WARNING: at /build/buildd/linux-2.6.28/drivers/usb/serial/usb-serial.c:313 serial_write+0x9f/0xb0 [usbserial]() Apr 20 20:03:05 ubuntu kernel: [ 87.411362] Modules linked in: ppdev parport_pc lp parport pl2303 usbserial serio_raw snd_usb_audio snd_usb_lib cm109 snd_rawmidi snd_seq_device snd_pcm snd_hwdep snd_timer snd soundcore snd_page_alloc pcspkr r6040 mii usbhid aufs exportfs fbcon tileblit font bitblit softcursor Apr 20 20:03:05 ubuntu kernel: [ 87.411565] Pid: 6, comm: events/0 Tainted: G W 2.6.28-15-generic #49-Ubuntu Apr 20 20:03:05 ubuntu kernel: [ 87.411590] Call Trace: Apr 20 20:03:05 ubuntu kernel: [ 87.411620] [] ? printk+0x18/0x1a Apr 20 20:03:05 ubuntu kernel: [ 87.411651] [] warn_on_slowpath+0x54/0x80 Apr 20 20:03:05 ubuntu kernel: [ 87.411694] [] ? finish_task_switch+0xb0/0xe0 Apr 20 20:03:05 ubuntu kernel: [ 87.411725] [] ? _spin_unlock_irqrestore+0x23/0x40 Apr 20 20:03:05 ubuntu kernel: [ 87.411756] [] ? _spin_unlock_irqrestore+0x23/0x40 Apr 20 20:03:05 ubuntu kernel: [ 87.411808] [] serial_write+0x9f/0xb0 [usbserial] Apr 20 20:03:05 ubuntu kernel: [ 87.411849] [] tty_put_char+0x2b/0x40 Apr 20 20:03:05 ubuntu kernel: [ 87.411880] [] opost+0xb1/0x260 Apr 20 20:03:05 ubuntu kernel: [ 87.411907] [] echo_char+0x2d/0x70 Apr 20 20:03:05 ubuntu kernel: [ 87.411935] [] n_tty_receive_char+0x157/0x6f0 Apr 20 20:03:05 ubuntu kernel: [ 87.411968] [] ? qh_schedule+0x169/0x2e0 Apr 20 20:03:05 ubuntu kernel: [ 87.411997] [] n_tty_receive_buf+0x250/0x4b0 Apr 20 20:03:05 ubuntu kernel: [ 87.412029] [] ? update_curr+0x8d/0x1e0 Apr 20 20:03:05 ubuntu kernel: [ 87.412061] [] ? dequeue_entity+0x16/0x2a0 Apr 20 20:03:05 ubuntu kernel: [ 87.412091] [] ? _spin_unlock_irqrestore+0x23/0x40 Apr 20 20:03:05 ubuntu kernel: [ 87.412122] [] ? _spin_unlock_irqrestore+0x23/0x40 Apr 20 20:03:05 ubuntu kernel: [ 87.412154] [] flush_to_ldisc+0xee/0x1b0 Apr 20 20:03:05 ubuntu kernel: [ 87.412184] [] ? flush_to_ldisc+0x0/0x1b0 Apr 20 20:03:05 ubuntu kernel: [ 87.412213] [] run_workqueue+0x8d/0x150 Apr 20 20:03:05 ubuntu kernel: [ 87.412246] [] ? prepare_to_wait+0x3a/0x70 Apr 20 20:03:05 ubuntu kernel: [ 87.412275] [] worker_thread+0x88/0xf0 Apr 20 20:03:05 ubuntu kernel: [ 87.412306] [] ? autoremove_wake_function+0x0/0x50 Apr 20 20:03:05 ubuntu kernel: [ 87.412336] [] ? worker_thread+0x0/0xf0 Apr 20 20:03:05 ubuntu kernel: [ 87.412366] [] kthread+0x3c/0x70 Apr 20 20:03:05 ubuntu kernel: [ 87.412393] [] ? kthread+0x0/0x70 Apr 20 20:03:05 ubuntu kernel: [ 87.412426] [] kernel_thread_helper+0x7/0x10 Apr 20 20:03:05 ubuntu kernel: [ 87.412449] ---[ end trace 62523b8bb1bd4d2e ]---