Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757399AbXHTIMK (ORCPT ); Mon, 20 Aug 2007 04:12:10 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751577AbXHTIL4 (ORCPT ); Mon, 20 Aug 2007 04:11:56 -0400 Received: from helios.cs.csubak.edu ([136.168.201.112]:51299 "EHLO helios.cs.csubak.edu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751450AbXHTILy (ORCPT ); Mon, 20 Aug 2007 04:11:54 -0400 Date: Mon, 20 Aug 2007 01:11:41 -0700 (PDT) From: David Griffith To: Clemens Ladisch cc: Linux Kernel Mailing List Subject: MIDI-related oops (was MOTU Fastlane USB MIDI interface) In-Reply-To: Message-ID: References: <20070816093703.sndy0gg44gk0o0ko@webmail.df.eu> <20070816174510.6o8cray64g8kosos@webmail.df.eu> <1187331453.13767.1205847147@webmail.messagingengine.com> <1187591842.11769.1206227263@webmail.messagingengine.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-Spam-Score: -2.5 (--) X-Spam-Report: ---- Start Spam Filter Report Filter Analysis score is (-2.5/5.0) -0.0 NO_RELAYS Informational: message was not relayed via SMTP -2.6 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] 0.1 AWL AWL: From: address is in the auto white-list ---- End Spam Filter results Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 6463 Lines: 100 On Mon, 20 Aug 2007, David Griffith wrote: > On Mon, 20 Aug 2007, Clemens Ladisch wrote: [snip] > $ aplaymidi -p 128:0 casablan.mid > > At this point, MIDI data flew by in the xterm in which amidi was running. After I did what Clemens suggested, I started MIOS Studio (http://www.midibox.org/mios_studio/) to see if I could jog something started. I patched MIOS Studio's internal in port to all available out ports including the virtual one previously mentioned. A couple minutes later, I pulled out the MIDI interface. Then I quit MIOS Studio and immediately got an Oops. This was still when "amidi -d -p virtual" was running. Aug 20 00:45:34 zaphod kernel: [694784.397469] BUG: unable to handle kernel NULL pointer dereference at virtual address 00000128 Aug 20 00:45:34 zaphod kernel: [694784.397484] printing eip: Aug 20 00:45:34 zaphod kernel: [694784.397487] e0883480 Aug 20 00:45:34 zaphod kernel: [694784.397490] *pde = 1e91f067 Aug 20 00:45:34 zaphod kernel: [694784.397496] Oops: 0000 [#1] Aug 20 00:45:34 zaphod kernel: [694784.397498] SMP Aug 20 00:45:34 zaphod kernel: [694784.397503] Modules linked in: nls_iso8859_1 nls_cp437 vfat fat sg sd_mod usb_storage libusual snd_rtctimer snd_usb_audio snd_usb_lib snd_hwdep isofs udf binfmt_misc rfcomm l2cap bluetooth ppdev cpufreq_stats cpufreq_conservative cpufreq_powersave cpufreq_ondemand freq_table cpufreq_userspace tc1100_wmi dev_acpi sony_acpi pcc_acpi button battery sbs container ac i2c_ec asus_acpi video backlight dock af_packet parport_pc lp parport fuse snd_ens1371 gameport snd_ac97_codec ac97_bus snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_dummy snd_seq_oss snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device psmouse via_ircc irda crc_ccitt i2c_viapro serio_raw snd soundc ore snd_page_alloc pcspkr via_agp agpgart i2c_core shpchp pci_hotplug tsdev evdev ipv6 ext3 jbd mbcache ide_cd cdrom ide_disk ata_generic libata scsi_mod usbhid hid via82cxxx floppy via_rhine mii generic ehci_hcd uhci_hcd usbcore thermal processor fan fbcon tileblit font bitblit softcursor vesafb capabili Aug 20 00:45:34 zaphod kernel: y commoncap Aug 20 00:45:34 zaphod kernel: [694784.397606] CPU: 0 Aug 20 00:45:34 zaphod kernel: [694784.397608] EIP: 0060:[] Not tainted VLI Aug 20 00:45:34 zaphod kernel: [694784.397610] EFLAGS: 00010246 (2.6.20-16-generic #2) Aug 20 00:45:34 zaphod kernel: [694784.397664] EIP is at hcd_buffer_free+0x20/0xa0 [usbcore] Aug 20 00:45:34 zaphod kernel: [694784.397669] eax: 00000000 ebx: 00000004 ecx: 1fb8e020 edx: 00000000 Aug 20 00:45:34 zaphod kernel: [694784.397675] esi: dfb8e020 edi: bf94df18 ebp: dc6d9d40 esp: dd865d6c Aug 20 00:45:34 zaphod kernel: [694784.397679] ds: 007b es: 007b ss: 0068 Aug 20 00:45:34 zaphod kernel: [694784.397684] Process java (pid: 4436, ti=dd864000 task=c1f74050 task.ti=dd864000) Aug 20 00:45:34 zaphod kernel: [694784.397688] Stack: 1fb8e020 d0ebde00 00000000 e0ca4c2c 1fb8e020 dc6d9d70 dc6d9d74 e0ca4cc8 Aug 20 00:45:34 zaphod kernel: [694784.397699] cdb5948c cdb593e0 00001fff c6a95c00 e0a43538 d42626a0 c6a95d40 e0a2f96a Aug 20 00:45:34 zaphod kernel: [694784.397709] dd865dd0 00001000 e0a2fa0b c6a95c00 c6a95c00 de43f4e0 00000000 e0a2b680 Aug 20 00:45:35 zaphod kernel: [694784.397718] Call Trace: Aug 20 00:45:35 zaphod kernel: [694784.397728] [] snd_usbmidi_out_endpoint_delete+0x2c/0x50 [snd_usb_lib] Aug 20 00:45:35 zaphod kernel: [694784.397746] [] snd_usbmidi_free+0x28/0x60 [snd_usb_lib] Aug 20 00:45:35 zaphod kernel: [694784.397760] [] snd_rawmidi_free+0x68/0x80 [snd_rawmidi] Aug 20 00:45:35 zaphod kernel: [694784.397781] [] snd_device_free+0x4a/0xa0 [snd] Aug 20 00:45:35 zaphod kernel: [694784.397815] [] snd_device_free_all+0x4b/0x60 [snd] Aug 20 00:45:35 zaphod kernel: [694784.397838] [] snd_card_do_free+0x30/0x100 [snd] Aug 20 00:45:35 zaphod kernel: [694784.397856] [] snd_card_file_remove+0xdf/0x120 [snd] Aug 20 00:45:35 zaphod kernel: [694784.397879] [] snd_rawmidi_release+0x4f/0x70 [snd_rawmidi] Aug 20 00:45:35 zaphod kernel: [694784.397898] [] snd_disconnect_release+0x72/0xa0 [snd] Aug 20 00:45:35 zaphod kernel: [694784.397922] [__fput+167/400] __fput+0xa7/0x190 Aug 20 00:45:35 zaphod kernel: [694784.397945] [filp_close+71/128] filp_close+0x47/0x80 Aug 20 00:45:35 zaphod kernel: [694784.397963] [put_files_struct+143/176] put_files_struct+0x8f/0xb0 Aug 20 00:45:35 zaphod kernel: [694784.397980] [do_exit+308/2048] do_exit+0x134/0x800 Aug 20 00:45:35 zaphod kernel: [694784.397988] [schedule_timeout+120/208] schedule_timeout+0x78/0xd0 Aug 20 00:45:35 zaphod kernel: [694784.397997] [get_futex_key+64/272] get_futex_key+0x40/0x110 Aug 20 00:45:35 zaphod kernel: [694784.398007] [unqueue_me+80/160] unqueue_me+0x50/0xa0 Aug 20 00:45:35 zaphod kernel: [694784.398024] [do_group_exit+38/128] do_group_exit+0x26/0x80 Aug 20 00:45:35 zaphod kernel: [694784.398034] [get_signal_to_deliver+681/1056] get_signal_to_deliver+0x2a9/0x420 Aug 20 00:45:35 zaphod kernel: [694784.398053] [do_notify_resume+147/1824] do_notify_resume+0x93/0x720 Aug 20 00:45:35 zaphod kernel: [694784.398086] [default_wake_function+0/16] default_wake_function+0x0/0x10 Aug 20 00:45:35 zaphod kernel: [694784.398111] [sys_futex+145/320] sys_futex+0x91/0x140 Aug 20 00:45:35 zaphod kernel: [694784.398132] [work_notifysig+19/24] work_notifysig+0x13/0x18 Aug 20 00:45:35 zaphod kernel: [694784.398160] ======================= Aug 20 00:45:35 zaphod kernel: [694784.398163] Code: 89 e0 bd ed ff ff ff eb a1 90 90 83 ec 0c 89 74 24 04 89 ce 8b 4c 24 10 85 f6 89 1c 24 89 d3 89 7c 24 08 89 c7 74 5e 8b 00 31 d2 <8b> 80 28 01 00 00 85 c0 74 5f 8d b6 00 00 00 00 3b 1c 95 ac 9c Aug 20 00:45:35 zaphod kernel: [694784.398201] EIP: [] hcd_buffer_free+0x20/0xa0 [usbcore] SS:ESP 0068:dd865d6c Aug 20 00:45:35 zaphod kernel: [694784.398228] <1>Fixing recursive fault but reboot is needed! -- David Griffith dgriffi@cs.csubak.edu A: Because it fouls the order in which people normally read text. 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