When it happened to me back then (2022) I'm pretty sure I did a "down"
followed by a "delete" and then the "destroy".
Have not tried to recreate since then.


On Wed, Oct 4, 2023 at 10:31 AM Alexander Bluhm <alexander.bl...@gmx.net>
wrote:

> On Wed, Oct 04, 2023 at 10:08:01AM -0400, Sonic wrote:
> > See the post:
> > "Uninterruptible D State after ifconfig wg0 destroy" Oct. 31, 2022 in the
> > Bugs archive.
>
> I have a test regress/sys/net/wg that configures a wg(4), sends
> some traffic, and destroys it.  I have never seen this bug.  There
> must be something special to trigger it.
>
> If it happns again, could you send an 'ps axlww | grep ifconifg'
> output?  Then we see the wait channel where it hangs in the kernel.
>
> $ ps axlww
>   UID   PID  PPID CPU PRI  NI   VSZ   RSS WCHAN   STAT   TT       TIME
> COMMAND
>
> The WCHAN string can be found in the kernel sources and gives hints.
> More sophisticated would be to break into ddb and show the kernel
> stack trace of the ifconfig process.  If you want to do that, I can
> give some advice.  But I recommend a serial console for that.
>
> Any idea what you did specially to trigger the problem?
>
> bluhm
>

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