Messages in this thread | | | Subject | 2.4.26 oops in i810_audio on HP Pavilion zd7100 | Date | Mon, 26 Apr 2004 19:21:06 -0700 | From | "I-Gene Leong" <> |
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I'm attempting to get sound working on an HP Pavilion zd7100. I get this on driver init:
Intel 810 + AC97 Audio, version 0.24, 18:44:49 Apr 26 2004 i810: Intel ICH5 found at IO 0x1c80 and 0x1400, MEM 0xd0000c00 and 0xd0000800, IRQ 10 i810: Intel ICH5 mmio at 0xe0b10c00 and 0xe0b12800 i810_audio: Primary codec has ID 0 i810_audio: Audio Controller supports 6 channels. i810_audio: Defaulting to base 2 channel mode. i810_audio: Resetting connection 0 i810_audio: Connection 0 with codec id 0 ac97_codec: AC97 Modem codec, id: CXT48 (Unknown) i810_audio: codec 0 is a softmodem - skipping. Unable to handle kernel NULL pointer dereference at virtual address 00000024 printing eip: c01e3fb2 *pde = 00000000 Oops: 0000 CPU: 0 EIP: 0010:[<c01e3fb2>] Not tainted EFLAGS: 00010246 eax: ffffffff ebx: 00000000 ecx: dff6a580 edx: c15ec800 esi: 000001f0 edi: 00000000 ebp: dff6a580 esp: dff6df00 ds: 0018 es: 0018 ss: 0018 Process swapper (pid: 1, stackpage=dff6d000) Stack: 00000282 00000246 00000246 00000032 dff6a580 000001f0 00000000 00000000 c02a5646 dff6a580 ffffffff 00000000 00000a04 00000282 c1587388 dff6a580 dff6a580 dff6a5b0 c15ec800 00000000 00000000 00000001 00000000 c15ec800 Call Trace: [<c01ea605>] [<c01ea6ac>] [<c0105000>] [<c0105080>] [<c01073ce>] [<c0105070>]
Code: 8b 43 24 8b 48 08 85 c9 75 27 0f b7 82 16 02 00 00 83 e0 fb <0>Kernel panic: Attempted to kill init!
Windows reports the laptop has a Conexant AC-Link audio codec.
I did some digging around with EIP and found it was dying in i810_set_spdif_output. The actual assembly source from the beginning of the function:
000E3F90 83EC20 sub esp,byte +0x20 000E3F93 896C241C mov [esp+0x1c],ebp 000E3F97 8B6C2424 mov ebp,[esp+0x24] 000E3F9B 897C2418 mov [esp+0x18],edi 000E3F9F 31FF xor edi,edi 000E3FA1 895C2410 mov [esp+0x10],ebx 000E3FA5 89742414 mov [esp+0x14],esi 000E3FA9 8B5504 mov edx,[ebp+0x4] 000E3FAC 8B9AF0010000 mov ebx,[edx+0x1f0] 000E3FB2 8B4324 mov eax,[ebx+0x24] 000E3FB5 8B4808 mov ecx,[eax+0x8] 000E3FB8 85C9 test ecx,ecx 000E3FBA 7527 jnz 0xe3fe3
Comparing this against the C source, I would hazard a guess that state->card->ac97_codec[0] is null. Wonder if this has something to do with the detection of the modem codec.
I'd do further digging but I'm not familiar at all with i810_audio.
Please cc me on all replies. Thanks. - I-Gene - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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