[alsa-devel] snd_usb_caiaq bug?
Marco Santamaria
marco.santamaria at gmail.com
Sun Jan 4 17:29:47 CET 2009
Hi,
it's about one year that I'm using my Native Instruments Audio Kontrol 1
(USB2 audio/MIDI interface) only with audio applications and it has been
working well so far.
Now I'm trying to use it with Rosegarden (MIDI) and, as soon as I start
Rosegarden, JACK crashes, the process jackd becomes "uninterruptible" and
with the command dmesg I find the following new lines
[ 1935.173876] BUG: unable to handle kernel NULL pointer dereference at
virtual address 00000044
[ 1935.173885] printing eip: f8a5f6fd *pde = 00000000
[ 1935.173891] Oops: 0000 [#1] PREEMPT SMP
[ 1935.173896] Modules linked in: isofs udf ipv6 af_packet i915 drm rfcomm
l2cap bluetooth ppdev acpi_cpufreq cpufreq_ondemand cpufreq_conservative
cpufreq_stats freq_table cpufreq_userspace cpufreq_powersave dock container
sbs sbshc iptable_filter ip_tables x_tables sbp2 parport_pc lp parport
snd_hda_intel snd_usb_caiaq snd_hwdep snd_pcm_oss snd_mixer_oss arc4
snd_seq_oss snd_pcm ecb blkcipher snd_seq_midi snd_page_alloc joydev
snd_rawmidi snd_seq_midi_event snd_seq iwl3945 sdhci serio_raw mmc_core
iwlwifi_mac80211 video output cfg80211 battery led_class ac snd_timer
snd_seq_device wmi_acer button snd evdev dcdbas iTCO_wdt iTCO_vendor_support
intel_agp shpchp pci_hotplug pcspkr soundcore agpgart psmouse ext3 jbd
mbcache sg sr_mod cdrom sd_mod b44 ata_generic ssb mii ohci1394 ieee1394
ata_piix pata_acpi libata scsi_mod ehci_hcd uhci_hcd usbcore thermal
processor fan fuse
[ 1935.173964]
[ 1935.173967] Pid: 1421, comm: IRQ-18 Not tainted (2.6.24-19-rt #1)
[ 1935.173970] EIP: 0060:[<f8a5f6fd>] EFLAGS: 00010292 CPU: 1
[ 1935.173979] EIP is at snd_rawmidi_transmit_peek+0x1d/0x100 [snd_rawmidi]
[ 1935.173982] EAX: 00000000 EBX: f7106264 ECX: 0000003d EDX: f7106407
[ 1935.173985] ESI: ffffffea EDI: 00000000 EBP: f7106407 ESP: df85be38
[ 1935.173988] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
preempt:00000001
[ 1935.173991] Process IRQ-18 (pid: 1421, ti=df85a000 task=f7d45320
task.ti=df85a000)
[ 1935.173993] Stack: 0000003d 00000000 f7106264 00000000 00000000 df83fc00
f8b8cc09 00000000
[ 1935.174000] f7106264 f710630c 00000000 df83fc00 df83fc00 f710630c
f888c888 00000008
[ 1935.174007] df83fd08 00000000 f710630c f8870770 f728a0c0 f728a0c0
ffffff8d f721e180
[ 1935.174014] Call Trace:
[ 1935.174021] [<f8b8cc09>] snd_usb_caiaq_midi_send+0x29/0x80
[snd_usb_caiaq]
[ 1935.174034] [<f888c888>] usb_hcd_giveback_urb+0x48/0xc0 [usbcore]
[ 1935.174064] [<f8870770>] ehci_urb_done+0x70/0xb0 [ehci_hcd]
[ 1935.174075] [<f887153f>] qh_completions+0x24f/0x430 [ehci_hcd]
[ 1935.174087] [<f8870770>] ehci_urb_done+0x70/0xb0 [ehci_hcd]
[ 1935.174096] [<f887293e>] ehci_work+0x51e/0x810 [ehci_hcd]
[ 1935.174103] [<c010b1e3>] sched_clock+0x13/0x40
[ 1935.174116] [<c0129199>] dequeue_task_rt+0xb9/0x1c0
[ 1935.174129] [<f8875498>] ehci_irq+0x158/0x1c0 [ehci_hcd]
[ 1935.174142] [<f888cb7b>] usb_hcd_irq+0x2b/0x60 [usbcore]
[ 1935.174166] [<c016a9cc>] handle_IRQ_event+0x5c/0x100
[ 1935.174178] [<c016b00a>] thread_simple_irq+0x4a/0x90
[ 1935.174185] [<c016b959>] do_irqd+0x229/0x290
[ 1935.174194] [<c016b730>] do_irqd+0x0/0x290
[ 1935.174199] [<c0141fc2>] kthread+0x42/0x70
[ 1935.174203] [<c0141f80>] kthread+0x0/0x70
[ 1935.174209] [<c0105857>] kernel_thread_helper+0x7/0x10
[ 1935.174217] =======================
[ 1935.174219] Code: 24 10 83 c4 14 c3 bf ea ff ff ff eb e3 90 83 ec 18 89
74 24 0c be ea ff ff ff 89 6c 24 14 89 d5 89 5c 24 08 89 7c 24 10 89 0c 24
<8b> 58 44 8b 7b 04 85 ff 0f 84 8e 00 00 00 8d 43 20 31 f6 89 44
[ 1935.174256] EIP: [<f8a5f6fd>] snd_rawmidi_transmit_peek+0x1d/0x100
[snd_rawmidi] SS:ESP 0068:df85be38
[ 1935.174265] ---[ end trace 9090d02b798b5496 ]---
I already asked to the Rosegarden and JACK people, but they couldn't help
me: it seems to be a driver related problem, as I can happily use
Rosegarden if I run JACK with the internal Intel sound card.
The program versions I'm using are: jackd 0.116.1, rosegarden 1.7.2.
Here's some other outputs:
$ uname -a
Linux din6400 2.6.24-19-rt #1 SMP PREEMPT RT Thu Aug 21 02:08:03 UTC 2008
i686 GNU/Linux
$ cat /proc/asound/version
Advanced Linux Sound Architecture Driver Version 1.0.17.
Compiled on Jan 3 2009 for kernel 2.6.24-19-rt (SMP).
$ grep VERSION_STR /usr/include/alsa/version.h
#define SND_LIB_VERSION_STR "1.0.17a"
$ aplay -l
**** Lista di PLAYBACK dispositivi hardware ****
scheda 0: Intel [HDA Intel], dispositivo 0: STAC92xx Analog [STAC92xx
Analog]
Sottoperiferiche: 1/1
Sottoperiferica #0: subdevice #0
scheda 0: Intel [HDA Intel], dispositivo 1: STAC92xx Digital [STAC92xx
Digital]
Sottoperiferiche: 1/1
Sottoperiferica #0: subdevice #0
scheda 1: A1 [Audio Kontrol 1], dispositivo 0: Audio Kontrol 1 [Audio
Kontrol 1]
Sottoperiferiche: 1/2
Sottoperiferica #0: subdevice #0
Sottoperiferica #1: subdevice #1
$ cat /proc/interrupts
CPU0 CPU1
0: 5438968 0 IO-APIC-edge timer
1: 5123 0 IO-APIC-edge i8042
8: 7 0 IO-APIC-edge rtc
9: 2 0 IO-APIC-fasteoi acpi
12: 570309 0 IO-APIC-edge i8042
14: 16584 0 IO-APIC-edge libata
15: 7712 0 IO-APIC-edge libata
16: 312032 0 IO-APIC-fasteoi i915 at pci:0000:00:02.0
17: 2 0 IO-APIC-fasteoi ohci1394
18: 269358 0 IO-APIC-fasteoi uhci_hcd:usb1, ehci_hcd:usb5
19: 3999 0 IO-APIC-fasteoi uhci_hcd:usb2, HDA Intel
20: 0 0 IO-APIC-fasteoi uhci_hcd:usb3
21: 0 0 IO-APIC-fasteoi uhci_hcd:usb4
22: 7638 0 IO-APIC-fasteoi eth0
23: 0 0 IO-APIC-fasteoi sdhci:slot0
221: 31667 0 PCI-MSI-edge iwl3945
NMI: 0 0 Non-maskable interrupts
LOC: 266694 2894868 Local timer interrupts
RES: 1091345 1871342 Rescheduling interrupts
CAL: 12287 11042 function call interrupts
TLB: 1395 1581 TLB shootdowns
TRM: 0 0 Thermal event interrupts
SPU: 0 0 Spurious interrupts
ERR: 0
MIS: 0
I do not include the jackd and rosegarden outputs becouse they are quite
long, but, if you think they are useful to understand what is going on, I
can send them too.
Any ideas?
Thank you
Marco
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