onifconsole prevent shutdown on mbr 2013

[Huang Wen Hui]

  PID    TID COMM             TDNAME           KSTACK
    1 100002 init             -                mi_switch
sleepq_catch_signals sleepq_wait_sig _cv_wait_sig ttydev_leave ttydev_close
devfs_close VOP_CLOSE_APV vgonel vgone devfs_revoke VOP_REVOKE_APV
sys_revoke amd64_syscall Xfast_syscall

Cheers,

Huang Wen-Hui



2014-07-02 4:55 GMT+08:00 Jilles Tjoelker <jilles at stack.nl>:

> On Sat, Jun 14, 2014 at 07:58:17AM +0800, Huang Wen Hui wrote:
> > I notice onifconsole is enable on STABLE recently, In mbr 2013 there is
> an
> > uart port, it may not useful:
>
> > uart0: <8250 or 16450 or compatible> at port 0x3f8-0x3ff irq 4 flags 0x10
> > on isa0
> > uart0: console (338,n,8,1)
>
> > If onifconsole is enable, "shutdown -p now"  or press power button on
> > keyboard is not properly work.
> > system still can ssh.
>
> > Before shutdown command, ps -ax show:
> > [snip]
> > After showdown command, ps -ax show:
> >  PID TT  STAT    TIME COMMAND
> >    0  -  DLs  0:00.10 [kernel]
> >    1  -  SLs  0:00.02 /sbin/init -s
> > [snip]
> > 1693 v0- Z+   0:00.01 <defunct>
> > 1694 v1- Z+   0:00.00 <defunct>
> > 1695 v2- Z+   0:00.01 <defunct>
> > 1696 v3- Z+   0:00.01 <defunct>
> > 1697 v4- Z+   0:00.01 <defunct>
> > 1698 v5- Z+   0:00.01 <defunct>
> > 1699 v6- Z+   0:00.01 <defunct>
> > 1700 v7- Z+   0:00.00 <defunct>
> > 1701 u0- Z+   0:00.01 <defunct>
> > 1747  0  Ss   0:00.01 -csh (csh)
> > 1780  0  R+   0:00.00 ps -ax
>
> > All getty processes become to defunct.
>
> Please provide the output of
>   procstat -k 1
> during the hang (after the shutdown command).
>
> If you are running stable/10, reverting r261997 (an MFC of r259441)
> might help. In some circumstances, r261997 makes a process unkillable
> while waiting for output to drain while closing a tty.
>
> --
> Jilles Tjoelker
>