From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934176AbZFLWOE (ORCPT ); Fri, 12 Jun 2009 18:14:04 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1757075AbZFLWNz (ORCPT ); Fri, 12 Jun 2009 18:13:55 -0400 Received: from [212.98.175.89] ([212.98.175.89]:47670 "EHLO localdomain.by" rhost-flags-FAIL-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1751520AbZFLWNy (ORCPT ); Fri, 12 Jun 2009 18:13:54 -0400 Date: Sat, 13 Jun 2009 01:15:09 +0300 From: Sergey Senozhatsky To: Alan Cox Cc: linux-kernel@vger.kernel.org, Alan Cox Subject: BUG: scheduling while atomic: pptpgw Message-ID: <20090612221509.GA3888@localdomain.by> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.18 (2008-05-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello Alan. As I can see you've patched tty recently. --- commit c9b3976e3fec266be25c5001a70aa0a890b6c476 Author: Alan Cox Date: Fri Jan 2 13:44:56 2009 +0000 tty: Fix PPP hang under load Signed-off-by: Alan Cox Signed-off-by: Linus Torvalds --- I have some problems in tty + ppp. Part of syslog (the rest is in attach): [ 8506.042498] BUG: scheduling while atomic: pptpgw/3167/0x00000400 [ 8506.042504] Modules linked in: ppp_deflate zlib_deflate ppp_async crc_ccitt ppp_generic slhc ipv6 fuse sbp2 loop snd_hda_codec_si3054 snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_pcm snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device snd soundcore pcspkr i2c_i801 rng_core snd_page_alloc psmouse asus_laptop serio_raw evdev led_class usbhid hid sg sd_mod sr_mod cdrom ata_generic pata_acpi ata_piix ide_pci_generic ohci1394 ieee1394 r8169 mii uhci_hcd ehci_hcd usbcore [ 8506.042563] [ 8506.042568] Pid: 3167, comm: pptpgw Tainted: G W (2.6.30-nv-git3 #7) F3JC [ 8506.042572] EIP: 0060:[] EFLAGS: 00200246 CPU: 0 [ 8506.042580] EIP is at _spin_unlock_irqrestore+0x16/0x30 [ 8506.042583] EAX: c1660040 EBX: 00200246 ECX: 00000000 EDX: 00200246 [ 8506.042586] ESI: f66b97e0 EDI: 00000001 EBP: f22ebe5c ESP: f22ebe58 [ 8506.042590] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 [ 8506.042593] CR0: 8005003b CR2: b753c000 CR3: 36a91000 CR4: 000006d0 [ 8506.042596] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000 [ 8506.042599] DR6: ffff0ff0 DR7: 00000400 [ 8506.042601] Call Trace: [ 8506.042609] [] tty_ldisc_deref+0x5b/0x90 [ 8506.042615] [] tty_wakeup+0x79/0x90 [ 8506.042620] [] pty_unthrottle+0x23/0x50 [ 8506.042624] [] tty_unthrottle+0x40/0x70 [ 8506.042628] [] n_tty_read+0x47f/0x720 [ 8506.042636] [] ? default_wake_function+0x0/0x40 [ 8506.042640] [] tty_read+0x98/0xe0 [ 8506.042644] [] ? n_tty_read+0x0/0x720 [ 8506.042651] [] vfs_read+0xbb/0x1c0 [ 8506.042655] [] ? tty_read+0x0/0xe0 [ 8506.042659] [] sys_read+0x58/0xa0 [ 8506.042665] [] sysenter_do_call+0x12/0x22 Sergey p.s. Reported :http://bugzilla.kernel.org/show_bug.cgi?id=13522