Date: Tue, 16 Sep 2003 15:24:56 -0400 (EDT) From: sysadmin@wvths.com To: "Martin Blapp" <mb@imp.ch> Cc: mbr@freebsd.org Subject: Re: 4.8-stable kernel panic Message-ID: <24022.24.218.220.202.1063740296.squirrel@webmail.wvths.com> In-Reply-To: <20030916210151.J47434@cvs.imp.ch> References: <pan.2003.09.15.22.55.58.674477@wvths.com> <20030916105810.U63985@news1.macomnet.ru> <23988.24.218.220.202.1063738362.squirrel@webmail.wvths.com> <20030916210151.J47434@cvs.imp.ch>
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>
> Hi,
>
>> #0 dumpsys () at ../../kern/kern_shutdown.c:487
>> #1 0xc0168237 in boot (howto=3D256) at ../../kern/kern_shutdown.c:316
>> #2 0xc0168675 in panic (fmt=3D0xc02db260 "m_copydata, offset > size o=
f
>> mbuf
>> chain") at ../../kern/kern_shutdown.c:595
>> #3 0xc018576e in m_copydata (m=3D0xc1560d00, off=3D6144, len=3D2048,
>> cp=3D0xc155a800 "") at ../../kern/uipc_mbuf.c:979
>> #4 0xc0186776 in m_defrag (m0=3D0xc1560d00, how=3D1) at
>> ../../kern/uipc_mbuf.c:1572
>> #5 0xc021de70 in dc_encap (sc=3D0xc21c3000, m_head=3D0xc1560d00,
>> txidx=3D0xd72d9f60) at ../../pci/if_dc.c:3006
>> #6 0xc021e0bb in dc_start (ifp=3D0xc21c3000) at ../../pci/if_dc.c:310=
5
>> #7 0xc021de09 in dc_intr (arg=3D0xc21c3000) at ../../pci/if_dc.c:2970
>
> This doesn't help me at all. Looks like corrupted mbufs, this doesn't
> have to be in the if_dc driver itself.
>
> So how can you reproduce this panic, is it a fresh panic at all, or
> did you encounter it since ever ? What kind of card do you have (pcicon=
f
> -lv) ?
I remember first being able to get this panic around the beggining of
August, maybe earlier. Reproduce it using this shell script:
---
#!/bin/bash
while :; do
ping -f -s 65467 ip_addr &
done
---
Here's the NIC info:
dc0@pci2:9:0: class=3D0x020000 card=3D0x00ed16ec chip=3D0x12161113 rev=3D=
0x11
hdr=3D0x00
vendor =3D 'Accton Technology Corporation'
device =3D 'EN5251-Based Fast Ethernet Adapter'
class =3D network
subclass =3D ethernet
HTH,
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