Public bug reported:
Binary package hint: linux-image-2.6-386
Hello,
I am trying out Herd 2 Feisty Live CD, NULL pointer reference always
happens at boot in snd_hda_codec module. There is no sound after boot.
[ 90.088000] BUG: unable to handle kernel NULL pointer dereference at virtual
address 00000000
[ 90.088000] printing eip:
[ 90.088000] f8b91093
[ 90.088000] *pde = 00000000
[ 90.088000] Oops: 0002 [#1]
[ 90.088000] SMP
[ 90.088000] Modules linked in: snd_hda_intel snd_hda_codec snd_pcm_oss
snd_mixer_oss snd_pcm snd_seq_dummy snd_seq_oss snd_seq_midi joydev usblp
snd_rawmidi snd_seq_midi_event ipw3945 hci_usb af_packet snd_seq bluetooth
snd_timer ieee80211 ieee80211_crypt snd_seq_device snd iTCO_wdt tpm_infineon
tpm shpchp psmouse serio_raw intel_agp agpgart soundcore iTCO_vendor_support
tpm_bios pci_hotplug snd_page_alloc pcspkr evdev tsdev ipv6 squashfs loop
unionfs nls_cp437 isofs usbhid hid sg sr_mod cdrom sd_mod ata_piix ata_generic
libata scsi_mod r8169 uhci_hcd generic ehci_hcd usbcore thermal processor fan
fbcon tileblit font bitblit softcursor vesafb capability commoncap
[ 90.092000] CPU: 1
[ 90.092000] EIP: 0060:[<f8b91093>] Not tainted VLI
[ 90.092000] EFLAGS: 00010202 (2.6.20-5-generic #2)
[ 90.092000] EIP is at get_input_type+0x83/0x90 [snd_hda_codec]
[ 90.092000] eax: 00000007 ebx: f6742640 ecx: 00000001 edx: 00000000
[ 90.092000] esi: f6742640 edi: 00000001 ebp: 00000000 esp: f67d3cf8
[ 90.092000] ds: 007b es: 007b ss: 0068
[ 90.092000] Process modprobe (pid: 4900, ti=f67d2000 task=f6790560
task.ti=f67d2000)
[ 90.092000] Stack: f6742664 f8b91e77 f8b9c4a8 f8b9c479 c18eaf70 00000000
00000000 f621a580
[ 90.092000] f6762800 f6762a24 00000000 f67d3d40 f663b740 f663bd40
00020000 c01e8a0a
[ 90.092000] 00000001 c01a92fa 0000031b 00008000 f663b740 f666eecc
c01a97bf 00000001
[ 90.092000] Call Trace:
[ 90.096000] [<f8b91e77>] build_generic_controls+0x97/0x3b0 [snd_hda_codec]
[ 90.096000] [<c01e8a0a>] idr_get_new+0xa/0x30
[ 90.096000] [<c01a92fa>] proc_register+0x7a/0x110
[ 90.096000] [<c01a97bf>] create_proc_entry+0x5f/0xd0
[ 90.096000] [<f8a23d18>] snd_create_proc_entry+0x8/0x20 [snd]
[ 90.096000] [<f8a23db1>] snd_info_register+0x81/0xa0 [snd]
[ 90.096000] [<f8b42337>] snd_pcm_lib_preallocate_pages+0x77/0x110 [snd_pcm]
[ 90.096000] [<f8b42420>] snd_pcm_lib_preallocate_pages_for_all+0x50/0x80
[snd_pcm]
[ 90.096000] [<f8a4cd6c>] create_codec_pcm+0xec/0x140 [snd_hda_intel]
[ 90.096000] [<f8b90b83>] snd_hda_build_controls+0x23/0x90 [snd_hda_codec]
[ 90.096000] [<f8a4d5fd>] azx_probe+0x5fd/0x7c0 [snd_hda_intel]
[ 90.096000] [<f8a4c730>] azx_send_cmd+0x0/0x100 [snd_hda_intel]
[ 90.096000] [<f8a4c830>] azx_get_response+0x0/0x180 [snd_hda_intel]
[ 90.096000] [<c01f6943>] pci_match_device+0x13/0xc0
[ 90.096000] [<f8a4d000>] azx_probe+0x0/0x7c0 [snd_hda_intel]
[ 90.096000] [<c01f6a66>] pci_device_probe+0x56/0x80
[ 90.096000] [<c0251c04>] really_probe+0x54/0x140
[ 90.096000] [<c0251d39>] driver_probe_device+0x49/0xc0
[ 90.096000] [<c0251eee>] __driver_attach+0x9e/0xa0
[ 90.096000] [<c025110b>] bus_for_each_dev+0x3b/0x60
[ 90.096000] [<c0251ab6>] driver_attach+0x16/0x20
[ 90.096000] [<c0251e50>] __driver_attach+0x0/0xa0
[ 90.096000] [<c025149b>] bus_add_driver+0x7b/0x1a0
[ 90.096000] [<c01f6c34>] __pci_register_driver+0x74/0xc0
[ 90.096000] [<c01416ed>] sys_init_module+0x15d/0x1bb0
[ 90.096000] [<c0107acd>] sys_mmap2+0xcd/0xd0
[ 90.096000] [<c0103116>] sysenter_past_esp+0x5f/0x89
[ 90.096000] =======================
[ 90.096000] Code: b9 f8 c3 83 e1 0f b8 1d c4 b9 f8 83 f9 02 74 c2 5b b8 27
c4 b9 f8 c3 83 e1 0f b8 0a c4 b9 f8 83 f9 02 74 ae 5b b8 15 c4 b9 f8 c3 <83> 0a
04 eb bf 90 8d b4 26 00 00 00 00 8b 48 4c 8b 11 85 d2 0f
[ 90.100000] EIP: [<f8b91093>] get_input_type+0x83/0x90 [snd_hda_codec]
SS:ESP 0068:f67d3cf8
If you need any other information, I will be glad to provide.
Thanks,
Boris Dušek
** Affects: linux-meta (Ubuntu)
Importance: Undecided
Status: Unconfirmed
--
(feisty, alsa-driver) NULL pointer in snd_hda_codec
https://launchpad.net/bugs/83096
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