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Date:      Sun, 05 Jun 2022 09:31:00 +0000
From:      bugzilla-noreply@freebsd.org
To:        net@FreeBSD.org
Subject:   [Bug 263445] [tcp] Fatal trap 12: page fault while in kernel mode // supervisor read data, page not present // 13.1-RC3
Message-ID:  <bug-263445-7501-1dFUrDFtjV@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-263445-7501@https.bugs.freebsd.org/bugzilla/>
References:  <bug-263445-7501@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D263445

--- Comment #14 from Igor A. Valkov <viaprog@gmail.com> ---
(In reply to Michael Tuexen from comment #13)

> How long does a server need to run until it crashes?
Sometimes several hours but sometimes several days.
Here are the timings of the incidents:

May 11 21:00
May 13 15:02
May 14 08:05
May 15 15:10
May 15 16:51
May 19 10:31 vmcore.1
May 20 01:04 vmcore.2
May 20 15:20 vmcore.3
May 30 20:17 vmcore.4
May 30 23:12 vmcore.5


> Are the servers running at high load?
Yes. Web serving on 10Gb channel (Intel X550T) with nginx. 64 cores of opte=
ron
6380.

> Regarding "custom build kernel": We were wondering if you can compile a k=
ernel with specific options turned on (like INVARIANTS and other things) an=
d potentially have some modifications to the source code? This intention is=
 to get more information about what is going on...

Yes. I can.

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