Date: Sun, 6 Oct 2002 21:11:10 -0400 From: abe <abe@informationwave.net> To: questions@freebsd.org Subject: fatal trap 12, system crashes Message-ID: <20021007011110.GA66840@dipole.informationwave.net>
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Hello,
I've got a rather odd issue, but not unique from what I've seen on othe=
r threads (whose solutions unfortunately did not work). I have had a machi=
ne running in a datacenter for 7 months if not more without problems, and 1=
.5 years prior to that without problems as well. The other night, suddenly=
the machine rebooted and came back up with a panic. This happened immedia=
tely after rc.firewall was run it appeared. I spent about 4 hours in the d=
atacenter trying to diagnose the issue and had no luck so brought the machi=
ne home with me that night. I've been working on it for about a week now t=
rying various methods of troubleshooting and haven't had any luck. I also =
tried to get a backtrace but that's not turning out so well either. It see=
ms even with a debugging kernel and the correct options set in rc.conf for =
dumpdev and savecore it will produce no usable output, if any. /var/crash =
is empty aside from 'minfree'. With all of that said, as it may be obvious=
already this message is going to be a bit lengthy as I am going to try to =
provide as much detail as possible considering the lack of a backtrace. I =
have tried several hardware configurations, including brand new hardware. =
Two different CPUs (AMD thunderbird 700 and 750mhz), 7 different memory mod=
ules all tested via memtest with 12 iterations at least with no errors, 4 d=
ifferent network cards: 3com 3905b/c, dlink (rtl8129), and a netgear. I ha=
ve used an abit kt7-raid, asus a7a 266, and another abit board. I have use=
d 4 different hard disks, 2 western digitals, both brand new, and 2 maxtors=
, fairly new. I have also swapped out power supplies, cables, network equi=
pment (switch, direct via crossover), etc. That's an idea of what I've don=
e thus far with hardware, and to sum that up we can think of the hardware c=
ollectively as three different machines. As far as installation media goes=
, I've tried via FTP and cdrom. The systems I've used, are 4.5-RELEASE, 4.=
5-RELEASE-p20, 4.6.2-p2. I've reinstalled several times attempting to spot=
an error in installation or my methods. I've changed my rules for IPFW to=
very primitive ones to test, and had no luck. The minute after loading th=
em, and then attempting to communicate with any type of network service, th=
e machine panics. I have a video which is approximately 2 megs in size, and=
a photo of the error and it occuring. The video is at http://dipole.infor=
mationwave.net/~abe/crash.mpg, and the photo is http://dipole.informationwa=
ve.net/~abe/fbsd.jpg. If anyone has any ideas as to what could be causing =
this, or a solution, that'd be great. Also any other information that woul=
d assist in solving this issue that I haven't already provided will be give=
n if requested. Any feedback would be greatly appreciated.
Regards,
Abe =20
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