kldunload(8) returns 0, although it fail

[Alexander Best]

On Wed Nov  3 10, Alexander Best wrote:
> hi there,
> 
> is this a known issue with kldunload(8)?

this is also very interesting:

***beginn***
otaku% kldstat -v|grep netgraph
 7    3 0xffffffff80bfa000 15e68    netgraph.ko (/boot/kernel/netgraph.ko)
		 6 netgraph
otaku% sudo kldunload netgraph
otaku% echo $?
0
otaku% kldstat -v|grep netgraph
 7    2 0xffffffff80bfa000 15e68    netgraph.ko (/boot/kernel/netgraph.ko)
		 6 netgraph
otaku% 
***end***

there seems to be a logical error in the ref counting code.

cheers.
alex

> 
> ***beginn***
> otaku% kldunload sound
> otaku% echo $?
> 0
> otaku% kldstat
> Id Refs Address            Size     Name
>  1   35 0xffffffff80100000 a2da40   kernel
>  2    1 0xffffffff80b2e000 295e8    snd_hda.ko
>  3    1 0xffffffff80b58000 85110    sound.ko
>  4    1 0xffffffff80bde000 da4bb8   nvidia.ko
>  5    4 0xffffffff81983000 418e0    linux.ko
>  6    1 0xffffffff819c5000 80e8     ng_ubt.ko
>  7    2 0xffffffff819ce000 fa78     ng_hci.ko
>  8    2 0xffffffff819de000 2bd0     ng_bluetooth.ko
>  9    3 0xffffffff819e1000 15e68    netgraph.ko
> 10    1 0xffffffff81c12000 3edb     linprocfs.ko
> 11    3 0xffffffff81c16000 4698     pseudofs.ko
> 12    1 0xffffffff81c1b000 31b3     procfs.ko
> 13    1 0xffffffff81c1f000 a37      linsysfs.ko
> otaku% kldunload sound
> kldunload: attempt to unload file that was loaded by the kernel
> kldunload: can't unload file: Device busy
> otaku% echo $?
> 1
> otaku%
> ***end***
> 
> cheers.
> alex
> 
> -- 
> a13x

-- 
a13x