5.1-RELEASE TODO

[Lars Eggert]

Dag-Erling Smorgrav wrote:

> Robert Watson <rwatson at FreeBSD.org> writes:
> 
>>   |-----------------+-------------+-------------+--------------------------|
>>   | Panic on        |             |             | If a network device      |
>>   | load/unload a   |             |             | driver, possibly any     |
>>   | kernel module   |             |             | driver, is linked into   |
>>   | for a driver    | Patch       | Maxime      | the kernel and then      |
>>   | already         | submitted   | Henrion     | loaded and unloaded as a |
>>   | statically      |             |             | module, the kernel will  |
>>   | linked into the |             |             | panic. This has been     |
>>   | kernel.         |             |             | observed with both if_dc |
>>   |                 |             |             | and if_fxp.              |
>>   |-----------------+-------------+-------------+--------------------------|
> 
> I'm unable to reproduce this; kldload refuses to load a module which
> is already present, and if you try to preload a driver which is
> compiled into the kernel, the kernel will refuse to register it.

I've seen panics like this happen with loading such duplicate modules 
via /boot/loader.conf (i.e. not with kldload from the console.) Is this 
what you mean by "preload"?

It doesn't happen for all modules, but it does for some. I think I 
remember random.ko being one that caused problems, but I'm not sure, and 
can't test right now (away from the machine).

Lars
-- 
Lars Eggert <larse at isi.edu>           USC Information Sciences Institute
-------------- next part --------------
A non-text attachment was scrubbed...
Name: smime.p7s
Type: application/x-pkcs7-signature
Size: 3529 bytes
Desc: S/MIME Cryptographic Signature
Url : http://lists.freebsd.org/pipermail/freebsd-current/attachments/20030513/48172ee6/smime.bin