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Date:      Sun, 01 Dec 2002 20:06:37 -0800
From:      Manfred Antar <null@pozo.com>
To:        Chuck Robey <chuckr@chuckr.org>
Cc:        FreeBSD-current <current@FreeBSD.ORG>, <imp@FreeBSD.ORG>
Subject:   Re: console problem
Message-ID:  <5.2.0.9.2.20021201200517.00ace730@pozo.com>
In-Reply-To: <20021201184638.Q360-100000@april.chuckr.org>
References:  <5.2.0.9.2.20021201131426.00a7a308@pozo.com>

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At 06:52 PM 12/1/2002 -0500, Chuck Robey wrote:
>On Sun, 1 Dec 2002, Manfred Antar wrote:
>
>> >Anyhow, it's the console, it's been locking up.  I just retried it with a
>> >kernel cvsupped not 2 hours ago, and it's still here.  All the vty's lock
>> >up, and once even froze the PC speaker (beeping annoyingly at me).
>> >
>> >There don't seem to be any hung processes.  I can use X, and I can also
>> >ssh into the box, so it's the console only.  Can't switch to different
>> >vty's, and the one i'm on is frozen, no response to any keys.
>> >
>> >It seems to come on more quickly if I do something serious, like a
>> >buildkernel.  Happened once on startup, but even though rc hadn't
>> >finished, I WAS able to ssh into the box and shut it down (indicating to
>> >me that rc had finished, just no response from the console).
>> >
>> >Machine is a 2 processor Tyan Thunder, 1G memory, two Athlons, scsi disks
>> >and eide both.
>> >
>> I'm seeing the same here and the same on a serial console.
>> Kernel from Friday 29 Nov. 8pm PST sources works
>> So it happened sometime after that
>> Manfred
>
>OK, did two full rebuilds,once using ssh, once using x.  The one using ssh
>was fine, the one using X did hang the console, but the only way to notice
>that was because the PC speaker hangs while sounding off.
>
>I read the commitlogs, the only one that seemed at all connected with the
>console was this one (a weak link, admittedly):
>
>============begin commit message====================================
>imp         2002/11/29 16:49:43 PST
>
>  Modified files:
>    sys/kern             subr_bus.c
>  Log:
>  devd kernel improvements:
>  1) Record all device events when devctl is enabled, rather than just when
>     devd has devctl open.  This is necessary to prevent races between when
>     a device arrives, and when devd starts.
>  2) Add hw.bus.devctl_disable to disable devctl, this can also be set as a
>     tunable.
>  3) Fix async support. Reset nonblocking and async_td in open.  remove
>     async flags.
>  4) Free all memory when devctl is disabled.
>
>  Approved by: re (blanket)
>
>  Revision  Changes    Path
>  1.117     +38 -21    src/sys/kern/subr_bus.c
>===================end commit message==============================

Chuck
I tried backing out sub_bus.c to the earlier version and still the same thing happens
So it must be something else
Manfred

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