Fredrik Tolf ha scritto:

>On Thu, 2005-03-17 at 14:05 -0800, ms419@freezone.co.uk wrote:
>  
>
>>Begin forwarded message:
>>
>>    
>>
>>>From: Antonio-Blasco Bonito <blasco.bonito@email.it>
>>>Date: March 17, 2005 4:02:35 AM PST
>>>To: ms419@freezone.co.uk
>>>Subject: Re: alsa bluetooth module
>>>      
>>>
>[...]
>  
>
>>>I get:
>>># modprobe snd-bt-sco
>>>FATAL: Error inserting snd_bt_sco 
>>>(/lib/modules/2.6.8-2-686/extra/snd-bt-sco.ko): Unknown symbol in 
>>>module, or unknown parameter (see dmesg)
>>>
>>># dmesg|tail
>>>...
>>>snd_bt_sco: no version for "struct_module" found: kernel tainted.
>>>snd_bt_sco: Unknown symbol kcalloc
>>>      
>>>
>
>Well, I'm not sure (especially since I don't use Debian and thus have no
>idea how they compile their kernels), but I would guess that this is a
>matter of symbol versioning. Is this module compiled against the same
>kernel (and with the same compilation options) that Blasco is using?
>  
>
Yes. Running kernel is from debian package 2.6.8-2-686 and the module is 
compiled against kernel-headers-2.6.8-2-686

>Try to check the output of `grep kcalloc /proc/kallsyms' and compare
>that to the output of `nm /path/to/snd-bt-sco.ko | grep kcalloc'.
>  
>
$ grep kcalloc /proc/kallsyms
ce9f6a40 U snd_kcalloc  [snd_opl3_lib]
ce9f6a40 U snd_kcalloc  [snd_hwdep]
ce9f6a40 U snd_kcalloc  [snd_mpu401_uart]
ce9f6a40 U snd_kcalloc  [snd_rawmidi]
ce9f6a40 U snd_kcalloc  [snd_seq_device]
ce9f6a40 U snd_kcalloc  [snd_cs4231_lib]
ce9f6a40 U snd_kcalloc  [snd_pcm_oss]
ce9f6a40 U snd_kcalloc  [snd_mixer_oss]
ce9f6a40 U snd_kcalloc  [snd_pcm]
ce9f6a40 U snd_kcalloc  [snd_timer]
ce9fc4d8 r __kcrctab_snd_kcalloc        [snd]
ce9fc634 r __kstrtab_snd_kcalloc        [snd]
ce9fca40 r __ksymtab_snd_kcalloc        [snd]
ce9f6a40 T snd_kcalloc  [snd]
4da9e78a a __crc_snd_kcalloc    [snd]

$ nm /lib/modules/2.6.8-2-686/extra/snd-bt-sco.ko |grep kcalloc
         U kcalloc

>  
>
>>>I looked in alsa sources in the kernel and I only found 
>>>"snd_magic_kcalloc"
>>>Maybe kcalloc calls should be renamed as such?
>>>      
>>>
>
>By no means. kcalloc() is a core kernel function, defined in mm/slab.c.
>It's not an ALSA-specific routine.
>  
>
No kcalloc in there... see the appended file from kernel-source-2.6.8

Blasco


 

 

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