Date: Mon, 27 Jun 2011 09:23:11 -0700 From: YongHyeon PYUN <pyunyh@gmail.com> To: Michael Schuh <michael.schuh@gmail.com> Cc: FreeBSD Net <freebsd-net@freebsd.org> Subject: Re: Kernel memory corruption(?) with age(4) Message-ID: <20110627162311.GA1652@michelle.cdnetworks.com> In-Reply-To: <BANLkTi=9bmx0K7c0jOkWvtd=_-sSVfsQww@mail.gmail.com> References: <BANLkTik2--TuG21vHyXCqALRZ3pAqjKEOA@mail.gmail.com> <20110626211921.GA1629@michelle.cdnetworks.com> <BANLkTi=9bmx0K7c0jOkWvtd=_-sSVfsQww@mail.gmail.com>
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On Mon, Jun 27, 2011 at 01:50:11PM +0200, Michael Schuh wrote: > 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.conf. > > > 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="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=/dev/zero |nc -l -p 1666 > > > > > > On Box B issue a complementary command like: > > > > > > # nc 192.168.1.2 1666| dd of=/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=219902&r2=220252&view=patch > > 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? The patch is for 8.2-RELEASE or 7.4-RELEASE. > I plan to switch the system this week to stable. > You don't have to apply the patch to stable/8. The patch was already merged to both stable/8 and stable/7. > thanks again.
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