I just compiled 2.6.26.6 and alsa 1.0.18rc3 (driver, lib and utils) and
when I load the snd_hda_intel module I get the following:
PCI: Setting latency timer of device 0000:80:01.0 to 64
alsactl[3495]: segfault at 0 ip b7db7283 sp bffc48dc error 4 in
libc-2.7.so[b7d45000+149000]
alsactl[3498]: segfault at 0 ip b7ed2283 sp bfcdf23c error 4 in
libc-2.7.so[b7e60000+149000]
BUG: unable to handle kernel NULL pointer dereference at 00000000
IP: [<f893cef1>] :snd_hda_intel:snd_hda_input_mux_info+0x11/0x40
*pde = 00000000
Oops: 0000 [#1] PREEMPT
Modules linked in: snd_hda_intel snd_hwdep snd_pcm_oss snd_pcm
snd_page_alloc snd_mixer_oss snd_seq_dummy snd_seq_oss
snd_seq_midi_event snd_seq snd_timer snd_seq_device snd via_agp
Pid: 3499, comm: amixer Not tainted (2.6.26.6 #1)
EIP: 0060:[<f893cef1>] EFLAGS: 00010286 CPU: 0
EIP is at snd_hda_input_mux_info+0x11/0x40 [snd_hda_intel]
EAX: 00000000 EBX: 00000000 ECX: 0000000e EDX: f70d7e04
ESI: c1105511 EDI: bfbb6ba0 EBP: f7237c00 ESP: f70d7da8
DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 0068
Process amixer (pid: 3499, ti=f70d6000 task=f7266000 task.ti=f70d6000)
Stack: f71de100 f8865c0a f8850580 f70d7e04 00000001 00000001 00000001
f75bae50
bfbb6ba0 f7208400 f7208560 f720854c f8850000 00000000 f720854c
f720859c
f720854c f75badc0 f749a980 f70d7e5c 00000000 00000009 f7b9e009
0000000d
Call Trace:
[<f8865c0a>] snd_ctl_ioctl+0x75a/0xc50 [snd]
[<c0145a0d>] __alloc_pages_internal+0x9d/0x410
[<c013d185>] handle_IRQ_event+0x25/0x50
[<c0111886>] kmap_atomic_prot+0x56/0xb0
[<c01117f5>] kunmap_atomic+0x35/0x70
[<f88654b0>] snd_ctl_ioctl+0x0/0xc50 [snd]
[<c016ef7c>] vfs_ioctl+0x1c/0x70
[<c016f1eb>] do_vfs_ioctl+0x21b/0x2b0
[<c010f8fd>] do_page_fault+0x26d/0x640
[<c016f2af>] sys_ioctl+0x2f/0x50
[<c0102fc1>] sysenter_past_esp+0x6a/0x99
=======================
Code: 0b ff 11 89 5e 5c 89 c7 89 e8 e8 eb c7 a7 c7 89 f8 5b 5e 5f 5d c3
8d 74 26 00 53 c7 42 40 03 00 00 00 c7 42 48 01 00 00 00 89 c3 <8b> 00
89 d1 89 42 50 8b 13 85 d2 74 13 8b 41 54 39 c2 76 10 8b
EIP: [<f893cef1>] snd_hda_input_mux_info+0x11/0x40 [snd_hda_intel]
SS:ESP 0068:f70d7da8
---[ end trace e7f83906cd780bf4 ]---
I've alsa .17 on here without a problem, so it's a new issue. The
machine is a Via Epia SN18000G which uses the via VT1708 audio chip. I
decided to try the new alsa release because I see the fixes related to
via devices in the release notes. With previous releases of ALSA, the
card probed and output audio OK, but would not record.
Let me know if there's anymore information anyone needs to resolve this.
Andrew
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