>Number: 154959
>Category: kern
>Synopsis: age: "Bad packet length xxxxx, Disconnecting: Packet corrupt"
>(unless TSO, rxcsum, txcsum are disabled)
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Tue Feb 22 15:10:02 UTC 2011
>Closed-Date:
>Last-Modified:
>Originator: Julien Cigar
>Release: 8.2-RELEASE
>Organization:
Université Libre de Bruxelles
>Environment:
FreeBSD dev.lan 8.2-RELEASE FreeBSD 8.2-RELEASE #0: Tue Feb 22 11:58:24 CET
2011 [email protected]:/usr/obj/usr/src/sys/CUSTOM amd64
>Description:
On a Asus P5K motherboard with the following if:
age0@pci0:2:0:0: class=0x020000 card=0x82261043 chip=0x10481969 rev=0xb0
hdr=0x00
vendor = 'Attansic (Now owned by Atheros)'
device = 'Gigabit Ethernet 10/100/1000 Base-T Controller (Atheros L1)'
class = network
subclass = ethernet
the machine disconnects with a "Bad packet length XXXX" or a "Corrupted MAC on
input" message when I unzip a simple file through SSH.
>How-To-Repeat:
jcigar@frodon ~ % ssh dev
(...)
jcigar@dev ~ % cd tmp
jcigar@dev tmp % unzip elgg-1.7.7.zip
Archive: elgg-1.7.7.zip
creating: elgg-1.7.7/
creating: elgg-1.7.7/engine/
inflating: elgg-1.7.7/engine/settings.example.php
creating: elgg-1.7.7/engine/handlers/
(...)
inflating:
elgg-1.7.7/mod/tinymce/tinymce/jscripts/tiny_mce/plugins/fullpage/css/fullpage.css
creating:
elgg-1.7.7/mod/tinymce/tinymce/jscripts/tiny_mce/plugins/fullpage/js/
inflating:
elgg-1.7.7/mod/tinymce/tinymce/jscripts/tiny_mce/plugins/fullpage/js/fullpage.js
Bad packet length 2190802413.
Disconnecting: Packet corrupt
jcigar@frodon ~ %
(sometimes it also fails with:
Corrupted MAC on input.
Disconnecting: Packet corrupt)
>Fix:
Disabling tcp segmentation offloading (TSO) and RX/CX checksum offloading on
the interface seems to work:
jcigar@dev ~ % sudo ifconfig age0 -rxcsum -txcsum -tso
>Release-Note:
>Audit-Trail:
>Unformatted:
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