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Date:      Wed, 19 Jan 2011 15:50:25 +0600
From:      Eugene Grosbein <egrosbein@rdtc.ru>
To:        lev@freebsd.org
Cc:        freebsd-stable@freebsd.org
Subject:   Re: 8-STABLE/amd64 semi-regular crash with "kernel trap 12 with	interrupts disabled" in "process 12 (swi4: clock)"
Message-ID:  <4D36B3E1.7020009@rdtc.ru>
In-Reply-To: <888480815.20110119120016@serebryakov.spb.ru>
References:  <1321946168.20110119001248@serebryakov.spb.ru>	<4D36A451.6070902@rdtc.ru> <888480815.20110119120016@serebryakov.spb.ru>

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On 19.01.2011 15:00, Lev Serebryakov wrote:
> Hello, Eugene.
> You wrote 19 января 2011 г., 11:44:01:
> 
>> There is known instability in em(4) driver in 8.2-RELEASE,
>> it may panic due to some lack of NULL pointer checks.
>> You should update to RELENG_8 containting fix and retest.
>  uname -v
>  FreeBSD 8.2-PRERELEASE #5: Sat Jan  8 14:38:46 MSK 2011
> 
>  It is built about hour after cvsup.

Yes, I've missed it's PRERELEASE already.
Backtrace points to the problem in em_local_timer() fixed in CURRENT
7 days ago, take a look:

http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/dev/e1000/if_em.c#rev1.65

I run my servers with this commit backported manually as
it has not been MFC'd yet.

Eugene Grosbein



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