Date: Mon, 27 Jun 2011 13:50:11 +0200 From: Michael Schuh <michael.schuh@gmail.com> To: pyunyh@gmail.com Cc: FreeBSD Net <freebsd-net@freebsd.org> Subject: Re: Kernel memory corruption(?) with age(4) Message-ID: <BANLkTi=9bmx0K7c0jOkWvtd=_-sSVfsQww@mail.gmail.com> In-Reply-To: <20110626211921.GA1629@michelle.cdnetworks.com> References: <BANLkTik2--TuG21vHyXCqALRZ3pAqjKEOA@mail.gmail.com> <20110626211921.GA1629@michelle.cdnetworks.com>
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2011/6/26 YongHyeon PYUN <pyunyh@gmail.com> > On Sun, Jun 26, 2011 at 06:53:57AM +0200, Michael Schuh wrote: > > Hi, > > > > i am not on the list atm. > > > > i found this entry after digging in google during problems with a > normally > > rock stable > > system ( under linux). > > > > I can also confirm the behaviour from the first post. > > After a long hard night digging in the system and changing some options > > i found a repeatable way to crash the system ultrafast. > > > > at the initial crashes the system crashed after copying around 800GB. > > the second and third and further attempts/impacts got issued everytime > > after an ~ hour from reboot on. leaving the system withouth any power, > > changing some hardware > > forth and back didn't changed anything, except the network card. > > > > a happening beside that: immediatly after the initial boot will get the > > ntpdate and ntpd started. > > by this, the ntpd complains about unsresolveable hostnames from ntp.con= f. > > if you log in and restart the ntpd by hand, everything is fine, no > > complains, > > no unresolveable hostnames. > > the hostnames are well known and tested and the DNS works still fine. > > this happening will also leave if you change the Ethernet-adapter to an > > Intel Card. > > > > My system crashed so fast that i didn't got any log entry nor a > crashdump. > > > > my last try's crashed my system after 100 - 120 seconds. > > > > HW: AMD P5K with Atheros age-Interface enabled, 6GB Corsair DDR2 800MHZ > > (pc6400) RAM ( latency 5-5-5-5-18) > > Ati Radeon HD4350 with 512MB Onboard Memory, 3 disks 2 PATA, 1 SATA. > > > > OS: FreeBSD/amd64 8.2-RELEASE ( unmodified original RELEASE install ) > > > > REQUIREMENTS to repeat the issue: > > box A: a stable FreeBSD or Linux Box with GBitEthernet interface and no > > essential networkload > > box B: the affected FreeBSD Host with the age interface. > > > > the age0 interface is configured with default options. > > only the ip-configuration got applied through rc.conf > > > > ifconfig_age0=3D"192.168.1.3 netmask 255.255.255.0" > > > > PROCEDURE: > > On Box A ( p.e IP: 192.168.1.2 ) issue the command: > > > > # dd if=3D/dev/zero |nc -l -p 1666 > > > > On Box B issue a complementary command like: > > > > # nc 192.168.1.2 1666| dd of=3D/dev/null > > > > I am sorry i cannot test a patch at this time cause this is a backup > server, > > that has to get asap into production. > > After disabling the age-Interface in the bios settings and inserting a > Intel > > GBit NIC the System runs stable again. > > > > i hope this informations will help a bit. > > if you need to message me, please message me directly cause i am not > > registered for this list. > > > > I think the issue was already fixed(r220249, r220252). Apply the > patch and rebuild your kernel after downloading it from the > following URL. > > http://svnweb.freebsd.org/base/head/sys/dev/age/if_age.c?r1=3D219902&r2= =3D220252&view=3Dpatch > If you see the same issue again with this patch please let me know. > Many thanks for the patch. i will test him later. Just another question in relation to this: Got this patch applied to the stable branch? I plan to switch the system this week to stable. thanks again. --=20 =3D =3D =3D http://michael-schuh.net/ =3D =3D =3D Projektmanagement - IT-Consulting - Professional Services IT Michael Schuh Postfach 10 21 52 66021 Saarbr=FCcken phone: 0681/8319664 mobil: 0175/5616453 @: m i c h a e l . s c h u h @ g m a i l . c o m =3D =3D =3D Ust-ID: DE251072318 =3D =3D =3D
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