When I ran a movie, I got these errors in dmesg. Also, sound began to skip too
fastly. My audio device is:
tarkane@tarkane:~$ lspci | grep -i audio
00:1b.0 Audio device: Intel Corporation 82801G (ICH7 Family) High Definition
Audio Controller (rev 01)
Tarkan Erimer
[81001.954666] BUG: unable to handle kernel NULL pointer dereference at
00000000000000a8
[81001.954677] IP: [<ffffffffa010f4b5>] snd_pcm_period_elapsed+0x11/0x1ec
[snd_pcm]
[81001.954701] PGD 1a028067 PUD 1a022067 PMD 0
[81001.954708] Oops: 0000 [#1] PREEMPT SMP
[81001.954713] last sysfs file:
/sys/devices/pci0000:00/0000:00:1d.7/usb5/5-8/5-8:1.0/host5/target5:0:0/5:0:0:0/block/sdb/size
[81001.954718] CPU 1
[81001.954721] Modules linked in: nls_iso8859_1 nls_cp437 vfat fat usb_storage
nfs lockd fscache nfs_acl auth_rpcgss sunrpc xt_multiport iptable_filter
ip_tables x_tables binfmt_misc bridge stp llc bnep xfrm_user xfrm4_tunnel
tunnel4 ipcomp xfrm_ipcomp esp4 ah4 deflate ctr twofish twofish_common
camellia serpent blowfish cast5 des_generic cbc aes_x86_64 aes_generic xcbc
rmd160 sha256_generic sha1_generic crypto_null af_key xfs exportfs btrfs
zlib_deflate crc32c libcrc32c snd_hda_codec_realtek snd_hda_intel
snd_hda_codec 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 iTCO_wdt
snd_seq_device iTCO_vendor_support snd soundcore snd_page_alloc psmouse
serio_raw pcspkr usbhid ehci_hcd uhci_hcd tg3 floppy
[81001.954806] Pid: 2180, comm: hd-audio0 Not tainted 2.6.31-rc8-git1 #4 HP
Compaq dc7600 Small Form Factor
[81001.954810] RIP: 0010:[<ffffffffa010f4b5>] [<ffffffffa010f4b5>]
snd_pcm_period_elapsed+0x11/0x1ec [snd_pcm]
[81001.954827] RSP: 0018:ffff88003a0cddd0 EFLAGS: 00010282
[81001.954831] RAX: 0000000000000000 RBX: ffff88003a1cf9e0 RCX:
0000000000000000
[81001.954834] RDX: 0000000000000001 RSI: 0000000000000003 RDI:
0000000000000000
[81001.954837] RBP: 0000000000000004 R08: ffff88003a1cf9e0 R09:
00000000ffffffff
[81001.954841] R10: 0000000000000013 R11: ffffffff81033a48 R12:
ffff88003a49cc48
[81001.954844] R13: 0000000000000000 R14: ffff88003a49cc00 R15:
ffffffffa014c092
[81001.954849] FS: 0000000000000000(0000) GS:ffff8800017f8000(0000)
knlGS:0000000000000000
[81001.954853] CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b
[81001.954856] CR2: 00000000000000a8 CR3: 000000001a01b000 CR4:
00000000000006a0
[81001.954860] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[81001.954863] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7:
0000000000000400
[81001.954868] Process hd-audio0 (pid: 2180, threadinfo ffff88003a0cc000, task
ffff88003f197750)
[81001.954870] Stack:
[81001.954872] 0000000000000000 ffff88003a1cf9e0 0000000000000004
ffff88003a49cc48
[81001.954878] <0> 0000000000000000 ffff88003a49cc00 ffffffffa014c092
ffffffffa014c11c
[81001.954884] <0> ffff88003a0cdec8 ffffc9000260c100 ffff88003a49cdf0
ffff88003a49cdf8
[81001.954892] Call Trace:
[81001.954905] [<ffffffffa014c092>] ? azx_irq_pending_work+0x0/0xbc
[snd_hda_intel]
[81001.954914] [<ffffffffa014c11c>] ? azx_irq_pending_work+0x8a/0xbc
[snd_hda_intel]
[81001.954923] [<ffffffff81051f35>] ? worker_thread+0x1cb/0x268
[81001.954928] [<ffffffff81056355>] ? autoremove_wake_function+0x0/0x2e
[81001.954933] [<ffffffff81051d6a>] ? worker_thread+0x0/0x268
[81001.954938] [<ffffffff81055f9c>] ? kthread+0x8b/0x93
[81001.954944] [<ffffffff81011c5a>] ? child_rip+0xa/0x20
[81001.954949] [<ffffffff81055f11>] ? kthread+0x0/0x93
[81001.954953] [<ffffffff81011c50>] ? child_rip+0x0/0x20
[81001.954955] Code: 01 00 00 31 c9 ba 01 00 00 00 be 06 00 00 00 e8 5d 7c f2
e0 31 c9 89 c8 5f c3 41 57 41 56 41 55 41 54 55 53 48 83 ec 08 49 89 fd <4c>
8b bf a8 00 00 00 49 8b 87 b0 02 00 00 48 85 c0 74 02 ff d0
[81001.955011] RIP [<ffffffffa010f4b5>] snd_pcm_period_elapsed+0x11/0x1ec
[snd_pcm]
[81001.955026] RSP <ffff88003a0cddd0>
[81001.955029] CR2: 00000000000000a8
[81001.955033] ---[ end trace 552f354de445b720 ]---
At Fri, 4 Sep 2009 14:45:28 +0300,
Tarkan Erimer wrote:
>
>
> When I ran a movie, I got these errors in dmesg. Also, sound began to skip too
> fastly. My audio device is:
>
> tarkane@tarkane:~$ lspci | grep -i audio
> 00:1b.0 Audio device: Intel Corporation 82801G (ICH7 Family) High Definition
> Audio Controller (rev 01)
>
>
> Tarkan Erimer
>
>
> [81001.954666] BUG: unable to handle kernel NULL pointer dereference at
> 00000000000000a8
> [81001.954677] IP: [<ffffffffa010f4b5>] snd_pcm_period_elapsed+0x11/0x1ec
> [snd_pcm]
> [81001.954701] PGD 1a028067 PUD 1a022067 PMD 0
> [81001.954708] Oops: 0000 [#1] PREEMPT SMP
> [81001.954713] last sysfs file:
> /sys/devices/pci0000:00/0000:00:1d.7/usb5/5-8/5-8:1.0/host5/target5:0:0/5:0:0:0/block/sdb/size
> [81001.954718] CPU 1
> [81001.954721] Modules linked in: nls_iso8859_1 nls_cp437 vfat fat usb_storage
> nfs lockd fscache nfs_acl auth_rpcgss sunrpc xt_multiport iptable_filter
> ip_tables x_tables binfmt_misc bridge stp llc bnep xfrm_user xfrm4_tunnel
> tunnel4 ipcomp xfrm_ipcomp esp4 ah4 deflate ctr twofish twofish_common
> camellia serpent blowfish cast5 des_generic cbc aes_x86_64 aes_generic xcbc
> rmd160 sha256_generic sha1_generic crypto_null af_key xfs exportfs btrfs
> zlib_deflate crc32c libcrc32c snd_hda_codec_realtek snd_hda_intel
> snd_hda_codec 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 iTCO_wdt
> snd_seq_device iTCO_vendor_support snd soundcore snd_page_alloc psmouse
> serio_raw pcspkr usbhid ehci_hcd uhci_hcd tg3 floppy
> [81001.954806] Pid: 2180, comm: hd-audio0 Not tainted 2.6.31-rc8-git1 #4 HP
> Compaq dc7600 Small Form Factor
> [81001.954810] RIP: 0010:[<ffffffffa010f4b5>] [<ffffffffa010f4b5>]
> snd_pcm_period_elapsed+0x11/0x1ec [snd_pcm]
> [81001.954827] RSP: 0018:ffff88003a0cddd0 EFLAGS: 00010282
> [81001.954831] RAX: 0000000000000000 RBX: ffff88003a1cf9e0 RCX:
> 0000000000000000
> [81001.954834] RDX: 0000000000000001 RSI: 0000000000000003 RDI:
> 0000000000000000
> [81001.954837] RBP: 0000000000000004 R08: ffff88003a1cf9e0 R09:
> 00000000ffffffff
> [81001.954841] R10: 0000000000000013 R11: ffffffff81033a48 R12:
> ffff88003a49cc48
> [81001.954844] R13: 0000000000000000 R14: ffff88003a49cc00 R15:
> ffffffffa014c092
> [81001.954849] FS: 0000000000000000(0000) GS:ffff8800017f8000(0000)
> knlGS:0000000000000000
> [81001.954853] CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b
> [81001.954856] CR2: 00000000000000a8 CR3: 000000001a01b000 CR4:
> 00000000000006a0
> [81001.954860] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
> 0000000000000000
> [81001.954863] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7:
> 0000000000000400
> [81001.954868] Process hd-audio0 (pid: 2180, threadinfo ffff88003a0cc000, task
> ffff88003f197750)
> [81001.954870] Stack:
> [81001.954872] 0000000000000000 ffff88003a1cf9e0 0000000000000004
> ffff88003a49cc48
> [81001.954878] <0> 0000000000000000 ffff88003a49cc00 ffffffffa014c092
> ffffffffa014c11c
> [81001.954884] <0> ffff88003a0cdec8 ffffc9000260c100 ffff88003a49cdf0
> ffff88003a49cdf8
> [81001.954892] Call Trace:
> [81001.954905] [<ffffffffa014c092>] ? azx_irq_pending_work+0x0/0xbc
> [snd_hda_intel]
> [81001.954914] [<ffffffffa014c11c>] ? azx_irq_pending_work+0x8a/0xbc
> [snd_hda_intel]
> [81001.954923] [<ffffffff81051f35>] ? worker_thread+0x1cb/0x268
> [81001.954928] [<ffffffff81056355>] ? autoremove_wake_function+0x0/0x2e
> [81001.954933] [<ffffffff81051d6a>] ? worker_thread+0x0/0x268
> [81001.954938] [<ffffffff81055f9c>] ? kthread+0x8b/0x93
> [81001.954944] [<ffffffff81011c5a>] ? child_rip+0xa/0x20
> [81001.954949] [<ffffffff81055f11>] ? kthread+0x0/0x93
> [81001.954953] [<ffffffff81011c50>] ? child_rip+0x0/0x20
> [81001.954955] Code: 01 00 00 31 c9 ba 01 00 00 00 be 06 00 00 00 e8 5d 7c f2
> e0 31 c9 89 c8 5f c3 41 57 41 56 41 55 41 54 55 53 48 83 ec 08 49 89 fd <4c>
> 8b bf a8 00 00 00 49 8b 87 b0 02 00 00 48 85 c0 74 02 ff d0
> [81001.955011] RIP [<ffffffffa010f4b5>] snd_pcm_period_elapsed+0x11/0x1ec
> [snd_pcm]
> [81001.955026] RSP <ffff88003a0cddd0>
> [81001.955029] CR2: 00000000000000a8
> [81001.955033] ---[ end trace 552f354de445b720 ]---
It's the first case of such a report. Might be some races.
Did you set CONFIG_SND_DEBUG=y?
thanks,
Takashi
On Saturday 05 September 2009 11:44:32 am Takashi Iwai wrote:
> At Fri, 4 Sep 2009 14:45:28 +0300,
>
> Tarkan Erimer wrote:
> > When I ran a movie, I got these errors in dmesg. Also, sound began to
> > skip too fastly. My audio device is:
> >
> > tarkane@tarkane:~$ lspci | grep -i audio
> > 00:1b.0 Audio device: Intel Corporation 82801G (ICH7 Family) High
> > Definition Audio Controller (rev 01)
> >
> >
> > Tarkan Erimer
> >
> >
> > [81001.954666] BUG: unable to handle kernel NULL pointer dereference at
> > 00000000000000a8
> > [81001.954677] IP: [<ffffffffa010f4b5>] snd_pcm_period_elapsed+0x11/0x1ec
> > [snd_pcm]
> > [81001.954701] PGD 1a028067 PUD 1a022067 PMD 0
> > [81001.954708] Oops: 0000 [#1] PREEMPT SMP
> > [81001.954713] last sysfs file:
> > /sys/devices/pci0000:00/0000:00:1d.7/usb5/5-8/5-8:1.0/host5/target5:0:0/5
> >:0:0:0/block/sdb/size [81001.954718] CPU 1
> > [81001.954721] Modules linked in: nls_iso8859_1 nls_cp437 vfat fat
> > usb_storage nfs lockd fscache nfs_acl auth_rpcgss sunrpc xt_multiport
> > iptable_filter ip_tables x_tables binfmt_misc bridge stp llc bnep
> > xfrm_user xfrm4_tunnel tunnel4 ipcomp xfrm_ipcomp esp4 ah4 deflate ctr
> > twofish twofish_common camellia serpent blowfish cast5 des_generic cbc
> > aes_x86_64 aes_generic xcbc rmd160 sha256_generic sha1_generic
> > crypto_null af_key xfs exportfs btrfs zlib_deflate crc32c libcrc32c
> > snd_hda_codec_realtek snd_hda_intel snd_hda_codec 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 iTCO_wdt snd_seq_device
> > iTCO_vendor_support snd soundcore snd_page_alloc psmouse serio_raw pcspkr
> > usbhid ehci_hcd uhci_hcd tg3 floppy
> > [81001.954806] Pid: 2180, comm: hd-audio0 Not tainted 2.6.31-rc8-git1 #4
> > HP Compaq dc7600 Small Form Factor
> > [81001.954810] RIP: 0010:[<ffffffffa010f4b5>] [<ffffffffa010f4b5>]
> > snd_pcm_period_elapsed+0x11/0x1ec [snd_pcm]
> > [81001.954827] RSP: 0018:ffff88003a0cddd0 EFLAGS: 00010282
> > [81001.954831] RAX: 0000000000000000 RBX: ffff88003a1cf9e0 RCX:
> > 0000000000000000
> > [81001.954834] RDX: 0000000000000001 RSI: 0000000000000003 RDI:
> > 0000000000000000
> > [81001.954837] RBP: 0000000000000004 R08: ffff88003a1cf9e0 R09:
> > 00000000ffffffff
> > [81001.954841] R10: 0000000000000013 R11: ffffffff81033a48 R12:
> > ffff88003a49cc48
> > [81001.954844] R13: 0000000000000000 R14: ffff88003a49cc00 R15:
> > ffffffffa014c092
> > [81001.954849] FS: 0000000000000000(0000) GS:ffff8800017f8000(0000)
> > knlGS:0000000000000000
> > [81001.954853] CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b
> > [81001.954856] CR2: 00000000000000a8 CR3: 000000001a01b000 CR4:
> > 00000000000006a0
> > [81001.954860] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
> > 0000000000000000
> > [81001.954863] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7:
> > 0000000000000400
> > [81001.954868] Process hd-audio0 (pid: 2180, threadinfo ffff88003a0cc000,
> > task ffff88003f197750)
> > [81001.954870] Stack:
> > [81001.954872] 0000000000000000 ffff88003a1cf9e0 0000000000000004
> > ffff88003a49cc48
> > [81001.954878] <0> 0000000000000000 ffff88003a49cc00 ffffffffa014c092
> > ffffffffa014c11c
> > [81001.954884] <0> ffff88003a0cdec8 ffffc9000260c100 ffff88003a49cdf0
> > ffff88003a49cdf8
> > [81001.954892] Call Trace:
> > [81001.954905] [<ffffffffa014c092>] ? azx_irq_pending_work+0x0/0xbc
> > [snd_hda_intel]
> > [81001.954914] [<ffffffffa014c11c>] ? azx_irq_pending_work+0x8a/0xbc
> > [snd_hda_intel]
> > [81001.954923] [<ffffffff81051f35>] ? worker_thread+0x1cb/0x268
> > [81001.954928] [<ffffffff81056355>] ? autoremove_wake_function+0x0/0x2e
> > [81001.954933] [<ffffffff81051d6a>] ? worker_thread+0x0/0x268
> > [81001.954938] [<ffffffff81055f9c>] ? kthread+0x8b/0x93
> > [81001.954944] [<ffffffff81011c5a>] ? child_rip+0xa/0x20
> > [81001.954949] [<ffffffff81055f11>] ? kthread+0x0/0x93
> > [81001.954953] [<ffffffff81011c50>] ? child_rip+0x0/0x20
> > [81001.954955] Code: 01 00 00 31 c9 ba 01 00 00 00 be 06 00 00 00 e8 5d
> > 7c f2 e0 31 c9 89 c8 5f c3 41 57 41 56 41 55 41 54 55 53 48 83 ec 08 49
> > 89 fd <4c> 8b bf a8 00 00 00 49 8b 87 b0 02 00 00 48 85 c0 74 02 ff d0
> > [81001.955011] RIP [<ffffffffa010f4b5>]
> > snd_pcm_period_elapsed+0x11/0x1ec [snd_pcm]
> > [81001.955026] RSP <ffff88003a0cddd0>
> > [81001.955029] CR2: 00000000000000a8
> > [81001.955033] ---[ end trace 552f354de445b720 ]---
>
> It's the first case of such a report. Might be some races.
> Did you set CONFIG_SND_DEBUG=y?
>
>
> thanks,
>
> Takashi
>
Thanks for your respond.
No, I didn't. But; today, I will try with CONFIG_SND_DEBUG=y and then will try
to reproduce the problem.
Tarkan
At Mon, 7 Sep 2009 10:01:15 +0300,
Tarkan Erimer wrote:
>
> On Saturday 05 September 2009 11:44:32 am Takashi Iwai wrote:
> > At Fri, 4 Sep 2009 14:45:28 +0300,
> >
> > Tarkan Erimer wrote:
> > > When I ran a movie, I got these errors in dmesg. Also, sound began to
> > > skip too fastly. My audio device is:
> > >
> > > tarkane@tarkane:~$ lspci | grep -i audio
> > > 00:1b.0 Audio device: Intel Corporation 82801G (ICH7 Family) High
> > > Definition Audio Controller (rev 01)
> > >
> > >
> > > Tarkan Erimer
> > >
> > >
> > > [81001.954666] BUG: unable to handle kernel NULL pointer dereference at
> > > 00000000000000a8
> > > [81001.954677] IP: [<ffffffffa010f4b5>] snd_pcm_period_elapsed+0x11/0x1ec
> > > [snd_pcm]
> > > [81001.954701] PGD 1a028067 PUD 1a022067 PMD 0
> > > [81001.954708] Oops: 0000 [#1] PREEMPT SMP
> > > [81001.954713] last sysfs file:
> > > /sys/devices/pci0000:00/0000:00:1d.7/usb5/5-8/5-8:1.0/host5/target5:0:0/5
> > >:0:0:0/block/sdb/size [81001.954718] CPU 1
> > > [81001.954721] Modules linked in: nls_iso8859_1 nls_cp437 vfat fat
> > > usb_storage nfs lockd fscache nfs_acl auth_rpcgss sunrpc xt_multiport
> > > iptable_filter ip_tables x_tables binfmt_misc bridge stp llc bnep
> > > xfrm_user xfrm4_tunnel tunnel4 ipcomp xfrm_ipcomp esp4 ah4 deflate ctr
> > > twofish twofish_common camellia serpent blowfish cast5 des_generic cbc
> > > aes_x86_64 aes_generic xcbc rmd160 sha256_generic sha1_generic
> > > crypto_null af_key xfs exportfs btrfs zlib_deflate crc32c libcrc32c
> > > snd_hda_codec_realtek snd_hda_intel snd_hda_codec 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 iTCO_wdt snd_seq_device
> > > iTCO_vendor_support snd soundcore snd_page_alloc psmouse serio_raw pcspkr
> > > usbhid ehci_hcd uhci_hcd tg3 floppy
> > > [81001.954806] Pid: 2180, comm: hd-audio0 Not tainted 2.6.31-rc8-git1 #4
> > > HP Compaq dc7600 Small Form Factor
> > > [81001.954810] RIP: 0010:[<ffffffffa010f4b5>] [<ffffffffa010f4b5>]
> > > snd_pcm_period_elapsed+0x11/0x1ec [snd_pcm]
> > > [81001.954827] RSP: 0018:ffff88003a0cddd0 EFLAGS: 00010282
> > > [81001.954831] RAX: 0000000000000000 RBX: ffff88003a1cf9e0 RCX:
> > > 0000000000000000
> > > [81001.954834] RDX: 0000000000000001 RSI: 0000000000000003 RDI:
> > > 0000000000000000
> > > [81001.954837] RBP: 0000000000000004 R08: ffff88003a1cf9e0 R09:
> > > 00000000ffffffff
> > > [81001.954841] R10: 0000000000000013 R11: ffffffff81033a48 R12:
> > > ffff88003a49cc48
> > > [81001.954844] R13: 0000000000000000 R14: ffff88003a49cc00 R15:
> > > ffffffffa014c092
> > > [81001.954849] FS: 0000000000000000(0000) GS:ffff8800017f8000(0000)
> > > knlGS:0000000000000000
> > > [81001.954853] CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b
> > > [81001.954856] CR2: 00000000000000a8 CR3: 000000001a01b000 CR4:
> > > 00000000000006a0
> > > [81001.954860] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
> > > 0000000000000000
> > > [81001.954863] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7:
> > > 0000000000000400
> > > [81001.954868] Process hd-audio0 (pid: 2180, threadinfo ffff88003a0cc000,
> > > task ffff88003f197750)
> > > [81001.954870] Stack:
> > > [81001.954872] 0000000000000000 ffff88003a1cf9e0 0000000000000004
> > > ffff88003a49cc48
> > > [81001.954878] <0> 0000000000000000 ffff88003a49cc00 ffffffffa014c092
> > > ffffffffa014c11c
> > > [81001.954884] <0> ffff88003a0cdec8 ffffc9000260c100 ffff88003a49cdf0
> > > ffff88003a49cdf8
> > > [81001.954892] Call Trace:
> > > [81001.954905] [<ffffffffa014c092>] ? azx_irq_pending_work+0x0/0xbc
> > > [snd_hda_intel]
> > > [81001.954914] [<ffffffffa014c11c>] ? azx_irq_pending_work+0x8a/0xbc
> > > [snd_hda_intel]
> > > [81001.954923] [<ffffffff81051f35>] ? worker_thread+0x1cb/0x268
> > > [81001.954928] [<ffffffff81056355>] ? autoremove_wake_function+0x0/0x2e
> > > [81001.954933] [<ffffffff81051d6a>] ? worker_thread+0x0/0x268
> > > [81001.954938] [<ffffffff81055f9c>] ? kthread+0x8b/0x93
> > > [81001.954944] [<ffffffff81011c5a>] ? child_rip+0xa/0x20
> > > [81001.954949] [<ffffffff81055f11>] ? kthread+0x0/0x93
> > > [81001.954953] [<ffffffff81011c50>] ? child_rip+0x0/0x20
> > > [81001.954955] Code: 01 00 00 31 c9 ba 01 00 00 00 be 06 00 00 00 e8 5d
> > > 7c f2 e0 31 c9 89 c8 5f c3 41 57 41 56 41 55 41 54 55 53 48 83 ec 08 49
> > > 89 fd <4c> 8b bf a8 00 00 00 49 8b 87 b0 02 00 00 48 85 c0 74 02 ff d0
> > > [81001.955011] RIP [<ffffffffa010f4b5>]
> > > snd_pcm_period_elapsed+0x11/0x1ec [snd_pcm]
> > > [81001.955026] RSP <ffff88003a0cddd0>
> > > [81001.955029] CR2: 00000000000000a8
> > > [81001.955033] ---[ end trace 552f354de445b720 ]---
> >
> > It's the first case of such a report. Might be some races.
> > Did you set CONFIG_SND_DEBUG=y?
> >
> >
> > thanks,
> >
> > Takashi
> >
>
> Thanks for your respond.
>
> No, I didn't. But; today, I will try with CONFIG_SND_DEBUG=y and then will try
> to reproduce the problem.
Thanks, that'll be helpful.
Also, there should be some relevant messages from the driver before
entering this point. Could you check it?
Another questions:
- how often does it happen, how reproducible is it?
- is whether it's a regression in 2.6.31 -- have you ever gotten this
in the earlier version?
There are a few changes in the codec communication code since 2.6.30,
but I don't see any obvious problem in them...
thanks,
Takashi
On Monday 07 September 2009 10:12:13 am Takashi Iwai wrote:
> At Mon, 7 Sep 2009 10:01:15 +0300,
>
> Tarkan Erimer wrote:
> > On Saturday 05 September 2009 11:44:32 am Takashi Iwai wrote:
> > > At Fri, 4 Sep 2009 14:45:28 +0300,
> > >
> > > Tarkan Erimer wrote:
> > > > When I ran a movie, I got these errors in dmesg. Also, sound began to
> > > > skip too fastly. My audio device is:
> > > >
> > > > tarkane@tarkane:~$ lspci | grep -i audio
> > > > 00:1b.0 Audio device: Intel Corporation 82801G (ICH7 Family) High
> > > > Definition Audio Controller (rev 01)
> > > >
> > > >
> > > > Tarkan Erimer
> > > >
> > > >
> > > > [81001.954666] BUG: unable to handle kernel NULL pointer dereference
> > > > at 00000000000000a8
> > > > [81001.954677] IP: [<ffffffffa010f4b5>]
> > > > snd_pcm_period_elapsed+0x11/0x1ec [snd_pcm]
> > > > [81001.954701] PGD 1a028067 PUD 1a022067 PMD 0
> > > > [81001.954708] Oops: 0000 [#1] PREEMPT SMP
> > > > [81001.954713] last sysfs file:
> > > > /sys/devices/pci0000:00/0000:00:1d.7/usb5/5-8/5-8:1.0/host5/target5:0
> > > >:0/5
> > > >
> > > >:0:0:0/block/sdb/size [81001.954718] CPU 1
> > > >
> > > > [81001.954721] Modules linked in: nls_iso8859_1 nls_cp437 vfat fat
> > > > usb_storage nfs lockd fscache nfs_acl auth_rpcgss sunrpc xt_multiport
> > > > iptable_filter ip_tables x_tables binfmt_misc bridge stp llc bnep
> > > > xfrm_user xfrm4_tunnel tunnel4 ipcomp xfrm_ipcomp esp4 ah4 deflate
> > > > ctr twofish twofish_common camellia serpent blowfish cast5
> > > > des_generic cbc aes_x86_64 aes_generic xcbc rmd160 sha256_generic
> > > > sha1_generic crypto_null af_key xfs exportfs btrfs zlib_deflate
> > > > crc32c libcrc32c snd_hda_codec_realtek snd_hda_intel snd_hda_codec
> > > > 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
> > > > iTCO_wdt snd_seq_device iTCO_vendor_support snd soundcore
> > > > snd_page_alloc psmouse serio_raw pcspkr usbhid ehci_hcd uhci_hcd tg3
> > > > floppy
> > > > [81001.954806] Pid: 2180, comm: hd-audio0 Not tainted 2.6.31-rc8-git1
> > > > #4 HP Compaq dc7600 Small Form Factor
> > > > [81001.954810] RIP: 0010:[<ffffffffa010f4b5>] [<ffffffffa010f4b5>]
> > > > snd_pcm_period_elapsed+0x11/0x1ec [snd_pcm]
> > > > [81001.954827] RSP: 0018:ffff88003a0cddd0 EFLAGS: 00010282
> > > > [81001.954831] RAX: 0000000000000000 RBX: ffff88003a1cf9e0 RCX:
> > > > 0000000000000000
> > > > [81001.954834] RDX: 0000000000000001 RSI: 0000000000000003 RDI:
> > > > 0000000000000000
> > > > [81001.954837] RBP: 0000000000000004 R08: ffff88003a1cf9e0 R09:
> > > > 00000000ffffffff
> > > > [81001.954841] R10: 0000000000000013 R11: ffffffff81033a48 R12:
> > > > ffff88003a49cc48
> > > > [81001.954844] R13: 0000000000000000 R14: ffff88003a49cc00 R15:
> > > > ffffffffa014c092
> > > > [81001.954849] FS: 0000000000000000(0000) GS:ffff8800017f8000(0000)
> > > > knlGS:0000000000000000
> > > > [81001.954853] CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b
> > > > [81001.954856] CR2: 00000000000000a8 CR3: 000000001a01b000 CR4:
> > > > 00000000000006a0
> > > > [81001.954860] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
> > > > 0000000000000000
> > > > [81001.954863] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7:
> > > > 0000000000000400
> > > > [81001.954868] Process hd-audio0 (pid: 2180, threadinfo
> > > > ffff88003a0cc000, task ffff88003f197750)
> > > > [81001.954870] Stack:
> > > > [81001.954872] 0000000000000000 ffff88003a1cf9e0 0000000000000004
> > > > ffff88003a49cc48
> > > > [81001.954878] <0> 0000000000000000 ffff88003a49cc00 ffffffffa014c092
> > > > ffffffffa014c11c
> > > > [81001.954884] <0> ffff88003a0cdec8 ffffc9000260c100 ffff88003a49cdf0
> > > > ffff88003a49cdf8
> > > > [81001.954892] Call Trace:
> > > > [81001.954905] [<ffffffffa014c092>] ? azx_irq_pending_work+0x0/0xbc
> > > > [snd_hda_intel]
> > > > [81001.954914] [<ffffffffa014c11c>] ? azx_irq_pending_work+0x8a/0xbc
> > > > [snd_hda_intel]
> > > > [81001.954923] [<ffffffff81051f35>] ? worker_thread+0x1cb/0x268
> > > > [81001.954928] [<ffffffff81056355>] ?
> > > > autoremove_wake_function+0x0/0x2e [81001.954933]
> > > > [<ffffffff81051d6a>] ? worker_thread+0x0/0x268 [81001.954938]
> > > > [<ffffffff81055f9c>] ? kthread+0x8b/0x93
> > > > [81001.954944] [<ffffffff81011c5a>] ? child_rip+0xa/0x20
> > > > [81001.954949] [<ffffffff81055f11>] ? kthread+0x0/0x93
> > > > [81001.954953] [<ffffffff81011c50>] ? child_rip+0x0/0x20
> > > > [81001.954955] Code: 01 00 00 31 c9 ba 01 00 00 00 be 06 00 00 00 e8
> > > > 5d 7c f2 e0 31 c9 89 c8 5f c3 41 57 41 56 41 55 41 54 55 53 48 83 ec
> > > > 08 49 89 fd <4c> 8b bf a8 00 00 00 49 8b 87 b0 02 00 00 48 85 c0 74
> > > > 02 ff d0 [81001.955011] RIP [<ffffffffa010f4b5>]
> > > > snd_pcm_period_elapsed+0x11/0x1ec [snd_pcm]
> > > > [81001.955026] RSP <ffff88003a0cddd0>
> > > > [81001.955029] CR2: 00000000000000a8
> > > > [81001.955033] ---[ end trace 552f354de445b720 ]---
> > >
> > > It's the first case of such a report. Might be some races.
> > > Did you set CONFIG_SND_DEBUG=y?
> > >
> > >
> > > thanks,
> > >
> > > Takashi
> >
> > Thanks for your respond.
> >
> > No, I didn't. But; today, I will try with CONFIG_SND_DEBUG=y and then
> > will try to reproduce the problem.
>
> Thanks, that'll be helpful.
> Also, there should be some relevant messages from the driver before
> entering this point. Could you check it?
>
> Another questions:
> - how often does it happen, how reproducible is it?
> - is whether it's a regression in 2.6.31 -- have you ever gotten this
> in the earlier version?
>
> There are a few changes in the codec communication code since 2.6.30,
> but I don't see any obvious problem in them...
>
>
> thanks,
>
> Takashi
>
Hi again Takashi,
I compiled the same kernel version with CONFIG_SND_DENUG=y. But;
unfortunately, I wasn't able to reproduce it. It happened when I was playing
some HD movie content and it only happened with this (2.6.31-rc8-git1-rt9)
kernel release. All the previous versions, that I tried, don't have this
issue. Just I discovered this warning in dmesg. Maybe, it can give some clue :
\
[ 24.197420] hda-intel: azx_pcm_prepare: bufsize=0x10000, format=0x31
[ 24.197431] hda_codec_setup_stream: NID=0x2, stream=0x5, channel=0,
format=0x31
[ 24.219842] hda-intel: IRQ timing workaround is activated for card #0.
Suggest a bigger bdl_pos_adj.
Tarkan