On Sat, Dec 10, 2005 at 09:13:20PM +0100, Rene Herman wrote:
> Unable to handle kernel NULL pointer dereference at virtual address 00000000
>  printing eip:
> 00000000
> *pde = 00000000
> Oops: 0000 [#1]
> PREEMPT 
> Modules linked in: snd_cs4236 snd_opl3_lib snd_hwdep snd_cs4236_lib snd_mpu401_uart snd_rawmidi snd_seq_device snd_cs4231_lib snd_pcm snd_timer snd soundcore snd_page_alloc nfsd exportfs lockd sunrpc nls_iso8859_1 nls_cp437 vfat fat nls_base
> CPU:    0
> EIP:    0060:[<00000000>]    Not tainted VLI
> EFLAGS: 00010286   (2.6.14.3-local-wc) 
> EIP is at 0x0
> eax: ef2daa14   ebx: ef2daa1c   ecx: 00000008   edx: f094a494
> esi: 00000000   edi: f094a494   ebp: c01b30e8   esp: ee8c2e3c
> ds: 007b   es: 007b   ss: 0068
> Process modprobe (pid: 1516, threadinfo=ee8c2000 task=ef113a90)
> Stack: f093f00c c01b3097 ee8c2e54 00000000 ef2daa1c c01b2a75 c0299458 c0299458 
>        f094a4ec c016d676 ef2daa1c ef2daa1c c0299360 00000000 c01b3127 c01b30e8 
>        ef2daa84 c01b2b77 ef2daa84 ef2daa1c ef2daac6 00000000 c01b2022 c0299240 
> Call Trace:
>  [<f093f00c>] snd_platform_driver_probe+0xc/0xd [snd]
>  [<c01b3097>] driver_probe_device+0x31/0x82
>  [<c01b2a75>] bus_for_each_drv+0x35/0x59
>  [<c016d676>] create_files+0x27/0x51
>  [<c01b3127>] device_attach+0x3a/0x4d
>  [<c01b30e8>] __device_attach+0x0/0x5
>  [<c01b2b77>] bus_add_device+0x20/0x6f
>  [<c01b2022>] device_add+0x97/0xf8
>  [<c01b41d9>] platform_device_register+0xb5/0x103
>  [<f08f7995>] snd_cs4231_pm_suspend+0x0/0x15 [snd_cs4231_lib]
>  [<f09404b2>] snd_generic_device_register+0x64/0x81 [snd]
>  [<f08f79aa>] snd_cs4231_pm_resume+0x0/0x15 [snd_cs4231_lib]
>  [<f0940682>] snd_card_set_generic_pm_callback+0x13/0x2f [snd]
>  [<f08f7e63>] snd_cs4231_create+0x28a/0x29e [snd_cs4231_lib]
>  [<f09593a2>] snd_cs4236_create+0x70/0x2b1 [snd_cs4236_lib]
>  [<f09784e6>] snd_card_cs423x_probe+0x14c/0x30c [snd_cs4236]
>  [<f09786d0>] snd_cs423x_pnp_detect+0x2a/0x4c [snd_cs4236]
>  [<c0192e39>] card_probe+0x3b/0x85
>  [<c01933f0>] pnp_register_card_driver+0x7a/0x86
>  [<f08e103d>] alsa_card_cs423x_init+0x3d/0x62 [snd_cs4236]
>  [<c0126e59>] sys_init_module+0xae/0x1a5
>  [<c01024d1>] syscall_call+0x7/0xb
> Code:  Bad EIP value.

This also looks like the bug #1623:

https://bugtrack.alsa-project.org/alsa-bug/view.php?id=1623

Please try the patch attached to that bugreport.