freebsd stable - Mar 2020 - kldunload geom_journal hangs with jfini

Hi everyone,

a recent 12-stable rev 358557 amd64 build hangs on kldunload of 
geom_journal.
To reproduce:
  kldload geom_journal
  kldunload geom_journal

kldunload just hangs indefinitely. top says the state is "jfini:".
It's
using some cpu time though.
procstat -k hangs as well.

Very reproducable, on both virtualbox as well as real hardware.

Any extra info that could help?


Johannes

On Thu, Mar 05, 2020 at 01:53:42AM +0000, Johannes Totz
wrote:
> Hi everyone,
> 
> a recent 12-stable rev 358557 amd64 build hangs on kldunload of
> geom_journal.
> To reproduce:
>  kldload geom_journal
>  kldunload geom_journal
> 
> kldunload just hangs indefinitely. top says the state is
"jfini:". It's
> using some cpu time though.
> procstat -k hangs as well.
> 
> Very reproducable, on both virtualbox as well as real hardware.
> 
> Any extra info that could help?
Hi Johannes,

This should be fixed by r359595.  It'll be merged to stable/12 in a few
days.