Date: Fri, 02 Apr 1999 11:25:52 -0800 From: "Addr.com Web Hosting" <admin@addr.net> To: freebsd-isp@FreeBSD.ORG Subject: Kernel panic question. Message-ID: <4.1.19990402112539.02322710@mail.addr.com>
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Hi,
Recently I received the following kernel panic. I was wondering if anyone
has any thoughts or comments on this before I investigate further myself.
The system is a dual PII 400 with 1GB ram and an internal DPT raid
controller running several mirrored disks. Maxusers for the kernel is set
to 256, which I know is low, but anything above that makes the system
unstable (512 makes it panic every hour!). The system is running FreeBSD
3.0-Release. The system is very stable in general, and is running high load
and with very diverse applications (http, https, sendmail, ftpd, ipop3d,
all the possible cgi scripts in this world and many more), however a panic
like this does occur once every few weeks. Sorry, no core dump for this
one, since I can't replicate the scenario.
Any help, comments or general information would be greatly appreciated.
Fatal trap 12: page fault while in kernel mode
mp_lock = 00000002; cpuid = 0; lapic.id = 00000000
fault virtual address = 0x30
fault code = supervisor write, page not present
instruction pointer = 0x8:0xf020ba9d
stack pointer = 0x10:0xfe3e1ebc
frame pointer = 0x10:0xfe3e1ecc
code segment = base 0x0, limit 0xfffff, type 0x1b
= DPL 0, pres 1, def32 1, gran 1
processor eflags = interrupt enabled, resume, IOPL = 0
current process = 25908 (dir)
interrupt mask = <- SMP: XXX
trap number = 12
panic: page fault
mp_lock = 00000002; cpuid = 0; lapic.id = 00000000
boot() called on cpu#0
as the FAQ requested, here is the results of "nm" that matched most closely
with the instruction pointer in the kernel. I'm guessing the
"_ufsspec_write" was the funtion which actually caused the panic.
f020baf4 t _ufsfifo_read
f020baac t _ufsspec_close
f020ba34 t _ufsspec_read
f020ba70 t _ufsspec_write
Thank you in advance,
Anthony Bourov
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