From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bartlomiej Zolnierkiewicz Subject: Re: [2.6.27.10] warn_on_slowpath on CD access Date: Mon, 12 Jan 2009 19:04:02 +0100 Message-ID: <200901121904.02584.bzolnier@gmail.com> References: <50218D5BDC%linux@youmustbejoking.demon.co.uk> Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Return-path: Received: from fg-out-1718.google.com ([72.14.220.155]:33263 "EHLO fg-out-1718.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752822AbZALSGB (ORCPT ); Mon, 12 Jan 2009 13:06:01 -0500 In-Reply-To: <50218D5BDC%linux@youmustbejoking.demon.co.uk> Content-Disposition: inline Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Darren Salt Cc: linux-kernel@vger.kernel.org, linux-ide@vger.kernel.org, Borislav Petkov On Sunday 11 January 2009, Darren Salt wrote: > I'm seeing warn_on_slowpath traces if I run "gxine cdda://" with a CD in the > drive. (The test CD has a data track followed by some audio tracks, but > that's probably not important.) > > The warning follows this paragraph. There is taint, but that's entirely due > to earlier warn_on_slowpath traces, all identical to this one. Hardware, if > it's relevant, is an nForce4-based board. Kernel is a locally-compiled > 2.6.27.10; config is attached. > > > WARNING: at arch/x86/kernel/pci-nommu.c:62 nommu_map_sg+0x31/0xb2() > Modules linked in: mt2060 dvb_usb_dib0700 dib7000p dib7000m dvb_usb dib3000mc > dibx000_common dib0070 vfat fat usb_storage sd_mod radeon drm rfcomm l2cap > ip6t_LOG xt_tcpudp ip6t_REJECT nf_conntrack_ipv6 xt_state nf_conntrack > ip6table_mangle ip6table_filter ip6_tables x_tables snd_emu10k1_synth > snd_emux_synth snd_seq_virmidi snd_seq_midi_emul dvb_pll cx22702 cx88_dvb > videobuf_dvb dvb_core snd_emu10k1 snd_seq_midi cx8800 snd_rawmidi > compat_ioctl32 cx8802 cx88xx snd_util_mem ir_common videodev v4l1_compat > snd_intel8x0 tveeprom snd_hwdep sata_nv v4l2_common btcx_risc videobuf_dma_sg > btusb snd_ac97_codec videobuf_core ac97_bus snd_pcm_oss snd_mixer_oss libata > dock snd_pcm bluetooth snd_page_alloc > Pid: 9809, comm: gxine Tainted: G W 2.6.27.10 #1 > > Call Trace: > [] warn_on_slowpath+0x51/0x77 > [] delay_tsc+0x15/0x27 > [] do_rw_taskfile+0x1cb/0x1e3 > [] cfq_dispatch_insert+0x37/0x4a > [] update_curr+0x3b/0x57 > [] dequeue_entity+0x12/0x80 > [] nommu_map_sg+0x31/0xb2 > [] ide_build_dmatable+0x29/0x127 > [] ide_dma_setup+0x36/0xd0 > [] cdrom_do_newpc_cont+0x0/0x18 > [] ide_cd_do_request+0x56b/0x5f8 > [] ide_do_request+0x6c0/0x904 > [] elv_insert+0x81/0x19a > [] blk_execute_rq_nowait+0x51/0x6d > [] blk_execute_rq+0x88/0xb0 > [] get_request_wait+0x3a/0xdd > [] blk_recount_segments+0x30/0x5b > [] ide_cd_queue_pc+0xc2/0x154 > [] get_request+0x19f/0x236 > [] ide_cdrom_packet+0x77/0x8e > [] mmc_ioctl+0x1ec/0x1214 > [] nommu_map_sg+0x0/0xb2 > [] delay_tsc+0x15/0x27 > [] __ide_wait_stat+0x9b/0xc7 > [] update_curr+0x3b/0x57 > [] __dequeue_entity+0x25/0x68 > [] pick_next_task_fair+0x9a/0xaa > [] sync_page_killable+0x0/0x31 > [] io_schedule+0xf/0x17 > [] sync_page+0x39/0x3e > [] __wait_on_bit_lock+0x63/0x71 > [] current_fs_time+0x1e/0x24 > [] cdrom_ioctl+0x8d3/0xc39 > [] generic_file_aio_read+0x4d4/0x534 > [] idecd_ioctl+0x149/0x15c > [] find_get_page+0x1a/0x51 > [] find_lock_page+0x22/0x54 > [] blkdev_ioctl+0x605/0x63a > [] __do_fault+0x307/0x350 > [] handle_mm_fault+0x315/0x5a4 > [] block_ioctl+0x1b/0x1f > [] vfs_ioctl+0x1b/0x50 > [] do_vfs_ioctl+0x212/0x21f > [] sys_ioctl+0x3c/0x5d > [] system_call_fastpath+0x16/0x1b > > ---[ end trace 7284c9695c67e9c1 ]--- Please try patches from: http://bugzilla.kernel.org/show_bug.cgi?id=12320 Thanks, Bart