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Date:      Sun, 13 Sep 2015 07:25:55 -0600 (MDT)
From:      Warren Block <wblock@wonkity.com>
To:        Mark R V Murray <markm@FreeBSD.org>
Cc:        Sean Bruno <sbruno@freebsd.org>, freebsd-current@freebsd.org
Subject:   Re: em broken on current amd64
Message-ID:  <alpine.BSF.2.20.1509130718001.26613@wonkity.com>
In-Reply-To: <2B045997-23A9-4B83-B34B-B9E4C06EF2C5@FreeBSD.org>
References:  <1B3BC636-6765-4478-AAE0-122E6904276E@pozo.com> <70759B1C-6685-4EF9-BC65-52590ABD398E@gmail.com> <63EACBE5-F82A-47D9-BA9A-E95D0E6AE80D@FreeBSD.org> <55EE2153.1050704@freebsd.org> <A9598479-1AA1-4FDB-82BC-9918B647B49F@grondar.org> <55EF0B39.30507@freebsd.org> <5CEDDA5F-7858-4A7D-BB45-CB902F53A83B@FreeBSD.org> <2B045997-23A9-4B83-B34B-B9E4C06EF2C5@FreeBSD.org>

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On Sat, 12 Sep 2015, Mark R V Murray wrote:

> I just caught this, on today¢s build:
>
> em0: Watchdog timeout Queue[0]-- resetting
> Interface is RUNNING and ACTIVE
> em0: TX Queue 0 ------
> em0: hw tdh = 127, hw tdt = 139
> em0: Tx Queue Status = -2147483648
> em0: TX descriptors avail = 1012
> em0: Tx Descriptors avail failure = 0
> em0: RX Queue 0 ------
> em0: hw rdh = 0, hw rdt = 1023
> em0: RX discarded packets = 0
> em0: RX Next to Check = 0
> em0: RX Next to Refresh = 1023
>
> [graveyard] /usr/ports 09:42 pm # uname -a
> FreeBSD graveyard.grondar.org 11.0-CURRENT FreeBSD 11.0-CURRENT #0 r287705: Sat Sep 12 15:07:54 BST 2015     root@graveyard.grondar.org:/b/obj/usr/src/sys/G_AMD64_GATE  amd64

That happened on an amd64 10-STABLE (r287148) system here a couple of 
days ago.  Both I217-V and 82574L cards in that system, but I did not 
save the message and can't say which had the error.  Never seen before, 
has not happened again.
From owner-freebsd-current@freebsd.org  Sun Sep 13 15:17:15 2015
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From: Daniel Dettlaff <dmilith@gmail.com>
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Subject: Kernel panic with my kernel config. Applies to  9.x up to 10.2
Date: Sun, 13 Sep 2015 17:17:03 +0200
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Hi, I have custom kernel config: =
https://gist.github.com/dmilith/234b3e6b65b6fa606e27
If I uncomment VIMAGE and epair from lines 10-11, each time I try to =
launch any jail with vnet it panics the kernel. (also HBSD options might =
be omited - they change nothing in this case, panics happened also =
without HBSD patches on vanilla FreeBSD).

Basically it=E2=80=99s 100% reproductible on all my testing hosts, and =
applies from 9.x to latest 10.2 (didn=E2=80=99t check 11.0 yet).

I hope it helps someone track VIMAGE/epair bugs!


best regards
Daniel (dmilith) Dettlaff

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