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Subject[BUG] Ali snd soft lookup on 2.6.14 (regression)
Recently I upgrade from 2.6.10 to 2.6.14 and I my sound card doesn't
work anymore.
dmesg shows:
BUG: soft lockup detected on CPU#0!

Pid: 3798, comm: modprobe
EIP: 0060:[<dcb09031>] CPU: 0
EIP is at snd_ali_codec_ready+0x31/0x90 [snd_ali5451]
EFLAGS: 00000212 Not tainted (2.6.14-1-686)
EAX: 5374807e EBX: 5374807e ECX: 00008800 EDX: 00008840
ESI: fffbeeb4 EDI: dada6000 EBP: 00000040 DS: 007b ES: 007b
CR0: 8005003b CR2: b7f18000 CR3: 1acf4000 CR4: 000006d0
[<dcb092a8>] snd_ali_codec_peek+0xb8/0xf0 [snd_ali5451]
[<dcb09353>] snd_ali_codec_read+0x23/0x30 [snd_ali5451]
[<dcad9235>] snd_ac97_read+0x35/0x50 [snd_ac97_codec]
[<dcae0c91>] patch_ad1881_chained1+0x71/0x100 [snd_ac97_codec]
[<dcae0e85>] patch_ad1881_chained+0x165/0x1a0 [snd_ac97_codec]
[<dcae1057>] patch_ad1881+0x197/0x1e0 [snd_ac97_codec]
[<dcae13b0>] patch_ad1981b+0x10/0x50 [snd_ac97_codec]
[<dcadc74e>] snd_ac97_mixer+0x2ee/0xc90 [snd_ac97_codec]
[<dca069d4>] snd_info_register+0x34/0xa0 [snd]
[<c01492cf>] kzalloc+0x1f/0x50
[<dca0968d>] snd_device_new+0x1d/0x70 [snd]
[<dcadc338>] snd_ac97_bus+0x78/0xb0 [snd_ac97_codec]
[<dcb0b0cd>] snd_ali_mixer+0xed/0x120 [snd_ali5451]
[<dcb0afc0>] snd_ali_mixer_free_ac97+0x0/0x20 [snd_ali5451]
[<dcb0bbdf>] snd_ali_probe+0xcf/0x170 [snd_ali5451]
[<c01da326>] pci_match_device+0x26/0xc0
[<c01da436>] __pci_device_probe+0x56/0x70
[<c01da47f>] pci_device_probe+0x2f/0x50
[<c0231fa3>] driver_probe_device+0x43/0xd0
[<c02320b0>] __driver_attach+0x0/0x50
[<c02320f1>] __driver_attach+0x41/0x50
[<c02314dd>] bus_for_each_dev+0x5d/0x80
[<c0232125>] driver_attach+0x25/0x30
[<c02320b0>] __driver_attach+0x0/0x50
[<c0231a39>] bus_add_driver+0x89/0xf0
[<c01da6f2>] pci_register_driver+0x62/0x90
[<dca8f00f>] alsa_card_ali_init+0xf/0x11 [snd_ali5451]
[<c01371d1>] sys_init_module+0xc1/0x1a0
[<c01030b5>] syscall_call+0x7/0xb
lspci -v
0000:00:04.0 Multimedia audio controller: ALi Corporation M5451 PCI
AC-Link Controller Audio Device (rev 02)
Subsystem: Sony Corporation: Unknown device 8158
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-
ParErr- Stepping- SERR- FastB2B-
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium
>TAbort- <TAbort-<MAbort- >SERR+ <PERR+
Latency: 64 (500ns min, 6000ns max)
Interrupt: pin A routed to IRQ 11
Region 0: I/O ports at 8800 [size=256]
Region 1: Memory at e0401000 (32-bit, non-prefetchable) [size=4K]
Capabilities: [dc] Power Management version 2
Flags: PMEClk- DSI+ D1+ D2+ AuxCurrent=0mA
Status: D0 PME-Enable- DSel=0 DScale=0 PME-

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