Date: Tue, 08 Mar 2005 21:04:54 -0500 From: Pierre-Luc Drouin <pldrouin@pldrouin.net> To: freebsd-stable@freebsd.org Subject: kernel trap 12 with interrupts disabled, 5.3-stable Message-ID: <422E59C6.9040007@pldrouin.net>
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I have updated a system from FreeBSD 4.10 to 5.3 (I did a fresh new
installation from scatch). At the same time we put a new CPUs in there.
The system is now a dual Xenon 3.2 GHZ with hyperthreading. When there's
load on the server, it crashes. Here is what I get on the console:
kernel trap 12 with interrupts disabled
Fatal trap 12: page fault while in kernel mode
cpuid = 3; apic id = 07
fault virtual address = 0x8
fault code = supervisor write, page not present
instruction pointer = 0x8:0xc064973e
stack pointer = 0x10:0xe338fc00
frame pointer = 0x10:0xe338fc0c
code segment = base 0x0, limit 0xfffff, type 0x1b
= DPL 0, pres 1, def32 1, gran 1
processor eflags = resume, IOPL = 0
current process = 1 (init)
trap number = 12
panic: page fault
cpuid = 3
spin lock sleepq chain held by 0xc22ad320 for > 5 seconds
What could be the cause?
The system was very stable with FreeBSD 4.10 and only 2 CPUs (1 real and
1 virtual). When I've seen page faults in the past, it was caused by the
RAM or the motherboard. Is it almost always the case? Does the fact to
add 2 new CPUs is more likely to reveal a RAM problem that was not known
before?
Thanks
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