Date: Wed, 2 Jul 2014 10:09:26 +0800 From: Huang Wen Hui <huanghwh@gmail.com> To: Jilles Tjoelker <jilles@stack.nl> Cc: "freebsd-stable@freebsd.org" <freebsd-stable@freebsd.org> Subject: Re: onifconsole prevent shutdown on mbr 2013 Message-ID: <CAB8uncawY3Z7YLsRkgpxieV%2Bi-vN1RAc=K5Nq445vNWnMs97Kw@mail.gmail.com> In-Reply-To: <20140701205541.GB18628@stack.nl> References: <CAB8uncZ%2BwmMptLwyW4-AThXvP8oiRUpD-aLCrG-yYMo0fS0U9g@mail.gmail.com> <20140701205541.GB18628@stack.nl>
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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@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
>
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