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Date:      Wed, 26 Apr 2017 05:17:26 +0300
From:      "Andrey V. Elsukov" <bu7cher@yandex.ru>
To:        Tom Uffner <tom@uffner.com>, freebsd-current <freebsd-current@freebsd.org>
Subject:   Re: panics in network stack in 12-current
Message-ID:  <92a10822-3fde-f839-1836-92e8d936f2b6@yandex.ru>
In-Reply-To: <bccb9c51-3dc2-ea38-15ff-0dbef83b25c1@uffner.com>
References:  <bccb9c51-3dc2-ea38-15ff-0dbef83b25c1@uffner.com>

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From: "Andrey V. Elsukov" <bu7cher@yandex.ru>
To: Tom Uffner <tom@uffner.com>, freebsd-current <freebsd-current@freebsd.org>
Message-ID: <92a10822-3fde-f839-1836-92e8d936f2b6@yandex.ru>
Subject: Re: panics in network stack in 12-current
References: <bccb9c51-3dc2-ea38-15ff-0dbef83b25c1@uffner.com>
In-Reply-To: <bccb9c51-3dc2-ea38-15ff-0dbef83b25c1@uffner.com>

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On 26.04.2017 04:03, Tom Uffner wrote:
> Since updating my -current box to 12 several months ago, I have been
> trying to pin down several elusive and probably related panics.
>=20
> they always manifest a a trap out of rw_wlock_hard()
>=20
> i am fairly certain that r302409 was stable, revs up through r306792 ma=
y be
> stable, or perhaps I just didn't wait long enough for my system to pani=
c. I
> don't know of anything that I can reproducably poke at to trigger this.=

> r306807 is definitely bad, as is everything up through r309124. I
> haven't seen anything on the mailing lists or in the SVN logs that look=
s
> like it is related to my problem.
>=20
> my hardware is an Asus M4A77TD MB, AMD Phenom 2 X6 1100T CPU (for some =
of
> this time I had an Athlon 2 X2, but upgraded recently), and RealTek 816=
8
> PCIe Gigabit NIC.
>=20
> FreeBSD discordia.uffner.com 12.0-CURRENT FreeBSD 12.0-CURRENT #33
> r306807M: Tue Apr 18 17:09:55 EDT 2017
> tom@discordia.uffner.com:/usr/obj/usr/src/sys/DISCORDIA  amd64
>=20
> in revs between 306807-307125, the panics have been in flowcleaner, in
> more recent ones, they happen in arbitrary userspace processes that mak=
e
> heavy use
> of the network.
>=20
> I know I should try the latest rev to see if it went away. aside from
> that, any thoughts on how I should proceed?
I think the most of these panics should be fixed in r315956.

--=20
WBR, Andrey V. Elsukov


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