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Description of problem: Random occurrence of the bug below. The audio output then stops working until next reboot. Version-Release number of selected component (if applicable): -2.6.19-1.2895.fc6 How reproducible: Don't know... random bug, but occurs often. Sorry! Steps to Reproduce: 1. 2. 3. Actual results: Audio stops working Expected results: No BUG! Audio stays OK Additional info: Audio device: 00:1f.5 Multimedia audio controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) AC'97 Audio Controller (rev 02) Excerpts from /var/log/message: eb 8 21:44:56 localhost kernel: BUG: unable to handle kernel NULL pointer dereference at virtual address 00000001 Feb 8 21:44:56 localhost kernel: printing eip: Feb 8 21:44:56 localhost kernel: e0a4186f Feb 8 21:44:56 localhost kernel: *pde = 1b440067 Feb 8 21:44:56 localhost kernel: Oops: 0000 [#1] Feb 8 21:44:56 localhost kernel: SMP Feb 8 21:44:56 localhost kernel: last sysfs file: /devices/pci0000:00/0000:00:1d.7/usb5/5-6/5-6:1.1/usbdev5.3_ep81/dev Feb 8 21:44:56 localhost kernel: Modules linked in: ppdev autofs4 hidp rfcomm l2cap bluetooth sunrpc ip_conntrack_netbios_ns ipt_REJECT xt_state ip_conntrack nfnetlink iptable_filter ip_tables ip6t_REJECT xt_tcpudp ip6table_filter ip6_tables x_tables nls_utf8 ntfs(U) dm_multipath video sbs i2c_ec button battery asus_acpi ac ipv6 lp snd_intel8x0 snd_ac97_codec snd_ac97_bus snd_seq_dummy snd_seq_oss uvcvideo(U) snd_seq_midi_event snd_usb_audio snd_seq nvidia(P)(U) snd_pcm_oss snd_mixer_oss snd_usb_lib ohci1394 videodev snd_pcm v4l1_compat i2c_i801 iTCO_wdt floppy skge ieee1394 v4l2_common snd_timer snd_rawmidi ide_cd usblp pcspkr snd_page_alloc snd_seq_device i2c_core serio_raw snd_hwdep snd cdrom parport_pc soundcore parport dm_snapshot dm_zero dm_mirror dm_mod ata_piix libata sd_mod scsi_mod ext3 jbd ehci_hcd ohci_hcd uhci_hcd Feb 8 21:44:56 localhost kernel: CPU: 1 Feb 8 21:44:56 localhost kernel: EIP: 0060:[<e0a4186f>] Tainted: P VLI Feb 8 21:44:56 localhost kernel: EFLAGS: 00210202 (2.6.19-1.2895.fc6 #1) Feb 8 21:44:56 localhost kernel: EIP is at snd_interval_list+0x21/0xa6 [snd_pcm] Feb 8 21:44:56 localhost kernel: eax: 00000001 ebx: c2f60928 ecx: 00000000 edx: 00000001 Feb 8 21:44:56 localhost kernel: esi: 00000013 edi: c2f60800 ebp: ffffffff esp: dd70fcec Feb 8 21:44:56 localhost kernel: ds: 007b es: 007b ss: 0068 Feb 8 21:44:56 localhost kernel: Process firefox-bin (pid: 3123, ti=dd70f000 task=dd84c370 task.ti=dd70f000) Feb 8 21:44:56 localhost kernel: Stack: dd70fe00 c2f60800 c2f60800 dd70fe34 e0a436d4 ffffffff c49d7ee0 00000017 Feb 8 21:44:56 localhost kernel: e0a3fad8 00000002 00000003 00000004 00000005 00000006 00000007 00000008 Feb 8 21:44:56 localhost kernel: 00000009 0000000a 0000000b 0000000c 0000000d 0000000e 0000000f 00000010 Feb 8 21:44:56 localhost kernel: Call Trace: Feb 8 21:44:56 localhost kernel: [<e0a436d4>] snd_pcm_hw_rule_list+0x25/0x29 [snd_pcm] Feb 8 21:44:56 localhost kernel: [<e0a3fad8>] snd_pcm_hw_refine+0x260/0x3b8 [snd_pcm] Feb 8 21:44:56 localhost kernel: [<e0a52107>] snd_pcm_oss_change_params+0x1a8/0xc4f [snd_pcm_oss] Feb 8 21:44:56 localhost kernel: [<e0a52eeb>] snd_pcm_oss_get_active_substream+0x2c/0x43 [snd_pcm_oss] Feb 8 21:44:56 localhost kernel: [<e0a52f2c>] snd_pcm_oss_get_formats+0xe/0xf9 [snd_pcm_oss] Feb 8 21:44:56 localhost kernel: [<e0a53f9d>] snd_pcm_oss_ioctl+0x366/0x9ca [snd_pcm_oss] Feb 8 21:44:56 localhost kernel: [<c048022b>] do_ioctl+0x1f/0x62 Feb 8 21:44:56 localhost kernel: [<c04804b8>] vfs_ioctl+0x24a/0x25c Feb 8 21:44:56 localhost kernel: [<c0480516>] sys_ioctl+0x4c/0x66 Feb 8 21:44:56 localhost kernel: [<c040404b>] syscall_call+0x7/0xb Feb 8 21:44:56 localhost kernel: [<00a17402>] 0xa17402 Feb 8 21:44:56 localhost kernel: ======================= Feb 8 21:44:56 localhost kernel: Code: 83 c4 40 89 c8 5b 5e 5f 5d c3 55 57 56 89 d6 53 8b 6c 24 14 89 ca 89 c3 31 c9 eb 21 85 ed 74 0b b8 01 00 00 00 d3 e0 85 c5 74 11 <8b> 04 8a 39 03 75 08 f6 43 08 01 75 04 eb 16 72 07 41 39 f1 75 Feb 8 21:44:56 localhost kernel: EIP: [<e0a4186f>] snd_interval_list+0x21/0xa6 [snd_pcm] SS:ESP 0068:dd70fcec
oops changed wrong bug
I'm getting this too: kernel-2.6.18-1.2869.fc6.i686 Feb 9 08:54:27 kirk kernel: BUG: unable to handle kernel NULL pointer dereference at virtual address 00000001 Feb 9 08:54:27 kirk kernel: printing eip: Feb 9 08:54:27 kirk kernel: f89e986f Feb 9 08:54:27 kirk kernel: *pde = 1560a067 Feb 9 08:54:27 kirk kernel: Oops: 0000 [#1] Feb 9 08:54:27 kirk kernel: SMP Feb 9 08:54:27 kirk kernel: last sysfs file: /devices/pci0000:00/0000:00:1e.0/0000:02:09.0/irq Feb 9 08:54:27 kirk kernel: Modules linked in: ppdev autofs4 ip_conntrack_netbios_ns ipt_MASQUERADE iptable_nat ip_nat ipt_REJECT xt_state ip_conntrack nfnetlink iptable_filter ip_tables ip6t_REJECT xt_tcpudp ip6table_filter ip6_tables x_tables vfat fat loop dm_multipath video sbs i2c_ec button battery asus_acpi ac ipv6 lp sg snd_intel8x0 snd_ac97_codec snd_ac97_bus snd_seq_dummy snd_usb_audio snd_seq_oss snd_seq_midi_event snd_seq nvidia(P)(U) snd_pcm_oss snd_mixer_oss iTCO_wdt snd_pcm floppy i2c_i801 usblp snd_timer serio_raw i2c_core snd_page_alloc snd_usb_lib snd_rawmidi ide_cd snd_seq_device parport_pc e100 parport snd_hwdep mii cdrom snd soundcore pcspkr usb_storage dm_snapshot dm_zero dm_mirror dm_mod ata_piix libata sd_mod scsi_mod ext3 jbd ehci_hcd ohci_hcd uhci_hcd Feb 9 08:54:27 kirk kernel: CPU: 1 Feb 9 08:54:27 kirk kernel: EIP: 0060:[<f89e986f>] Tainted: P VLI Feb 9 08:54:27 kirk kernel: EFLAGS: 00210202 (2.6.19-1.2895.fc6 #1) Feb 9 08:54:27 kirk kernel: EIP is at snd_interval_list+0x21/0xa6 [snd_pcm] Feb 9 08:54:27 kirk kernel: eax: 00000001 ebx: d1d70d28 ecx: 00000000 edx: 00000001 Feb 9 08:54:27 kirk kernel: esi: 00000013 edi: d1d70c00 ebp: ffffffff esp: d5437cf0 Feb 9 08:54:27 kirk kernel: ds: 007b es: 007b ss: 0068 Feb 9 08:54:27 kirk kernel: Process firefox-bin (pid: 4117, ti=d5437000 task=d5579770 task.ti=d5437000) Feb 9 08:54:27 kirk kernel: Stack: d5437e00 d1d70c00 d1d70c00 d5437e34 f89eb6d4 ffffffff d1d706e0 00000017 Feb 9 08:54:27 kirk kernel: f89e7ad8 ffffffff ffffffff 00000000 00000002 00000003 00000004 00000005 Feb 9 08:54:27 kirk kernel: 00000006 00000007 00000008 00000009 0000000a 0000000b 0000000c 0000000d Feb 9 08:54:27 kirk kernel: Call Trace: Feb 9 08:54:27 kirk kernel: [<f89eb6d4>] snd_pcm_hw_rule_list+0x25/0x29 [snd_pcm] Feb 9 08:54:27 kirk kernel: [<f89e7ad8>] snd_pcm_hw_refine+0x260/0x3b8 [snd_pcm] Feb 9 08:54:27 kirk kernel: [<f89fa107>] snd_pcm_oss_change_params+0x1a8/0xc4f [snd_pcm_oss] Feb 9 08:54:27 kirk kernel: [<f89faeeb>] snd_pcm_oss_get_active_substream+0x2c/0x43 [snd_pcm_oss] Feb 9 08:54:27 kirk kernel: [<f89faf2c>] snd_pcm_oss_get_formats+0xe/0xf9 [snd_pcm_oss] Feb 9 08:54:27 kirk kernel: [<f89fbf9d>] snd_pcm_oss_ioctl+0x366/0x9ca [snd_pcm_oss] Feb 9 08:54:27 kirk kernel: [<c048022b>] do_ioctl+0x1f/0x62 Feb 9 08:54:27 kirk kernel: [<c04804b8>] vfs_ioctl+0x24a/0x25c Feb 9 08:54:27 kirk kernel: [<c0480516>] sys_ioctl+0x4c/0x66 Feb 9 08:54:27 kirk kernel: [<c040404b>] syscall_call+0x7/0xb Feb 9 08:54:27 kirk kernel: [<007a5402>] 0x7a5402 Feb 9 08:54:27 kirk kernel: ======================= Feb 9 08:54:27 kirk kernel: Code: 83 c4 40 89 c8 5b 5e 5f 5d c3 55 57 56 89 d6 53 8b 6c 24 14 89 ca 89 c3 31 c9 eb 21 85 ed 74 0b b8 01 00 00 00 d3 e0 85 c5 74 11 <8b> 04 8a 39 03 75 08 f6 43 08 01 75 04 eb 16 72 07 41 39 f1 75 Feb 9 08:54:27 kirk kernel: EIP: [<f89e986f>] snd_interval_list+0x21/0xa6 [snd_pcm] SS:ESP 0068:d5437cf0
And it's random.
Please retest this without the proprietary binary modules loaded.
The latest kernel doesn't "Oops" anymore, so I did not perform the test required above... but: _ One thing I omitted to mention is that a "quickcam pro 5000" is also connected to this system... Although this cam does not have sound output (and is unused by Linux!), it seems there is a race at init time between the sound card and the quickcam microphone, and the later may be considered as the default sound device. After reboot, it sometimes work, sometimes not. The initial problem with kernel 2.6.19-1.2895.fc6 was probably related to USB sound, as external reference http://bugme.osdl.org/show_bug.cgi?id=7681 may suggest. _ The new problem has been partially solved according to bug #229227 comments (adapted to my hardware configuration). Mainly by not using sndconfig (edit modprobe.conf manually) and by creating an appropriate /etc/asound.conf file. However, some soundy applications (i.e.: some firefox plugins) still do not work.
Closing the bug, since it doesn't occur anymore in its original form.