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Date:      Mon, 20 Nov 2000 12:14:25 -0800 (PST)
From:      John Baldwin <jhb@FreeBSD.org>
To:        John Hay <jhay@icomtek.csir.co.za>
Cc:        cp@bsdi.com, smp@FreeBSD.org, jburkhol@home.com
Subject:   Re: cvs commit: src/sys/kern kern_timeout.c
Message-ID:  <XFMail.001120121425.jhb@FreeBSD.org>
In-Reply-To: <200011201555.eAKFtYS92502@zibbi.icomtek.csir.co.za>

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On 20-Nov-00 John Hay wrote:
>> > 
>> > Here's a patch that seems to work ok here.  It works on my UP box running
>> > X and stuff, I don't notice any hung processes.  It works on the SMP box,
>> > I built a kernel over NFS and it seemed ok, except that I can't
>> > get a kernel to boot using the serial console with WITNESS enabled.  It
>> > stops at the twiddle thing before the copyright is printed and just hangs.
>> > This also happens without the patch and even with a UP kernel, so I don't
>> > really know what's going on.  Please try and let me know if you still
>> > see the hung processes.
>> > 
>> 
>> Well I have tried your patch and so far it looks good. I have finished
>> a "make -j13 world" and a "make release NODOC=YES WORLD_FLAGS=-j4" with
>> no problems on a dual 266MHz PII.
> 
> It looks like I spoke too soon. After those 2 runs without problems, I
> haven't been able to get a world or release to finish again. Always
> some process that gets stuck somewhere with no error or anything. If I
> kill it it dies and everything seems ok again.
> 
> One thing that I have noticed the last few times is that there is always
> a zombie process when this happens and it looks like it is the zombie's
> parent that gets stuck. If I kill the parent, the zombie goes away and 
> the rest of the processes that was waiting for it to finish untangle
> themselves.

This is the bug involving CURSIG() in msleep().

> I have also tried allproc2.diff, but it did not seem to make a difference.
> 
> John
> -- 
> John Hay -- John.Hay@icomtek.csir.co.za

-- 

John Baldwin <jhb@FreeBSD.org> -- http://www.FreeBSD.org/~jhb/
PGP Key: http://www.baldwin.cx/~john/pgpkey.asc
"Power Users Use the Power to Serve!"  -  http://www.FreeBSD.org/


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