> Hi,
> 
> I last night I have upgraded a system to the latest stable, and have 
> already received two of these panics:

Do you have APM enabled on this system, even just in the BIOS?

> uname -a reads
> FreeBSD addr3.addr.com 3.3-RC FreeBSD 3.3-RC #0: Tue Sep  7 21:57:07 GMT 1999
>    [EMAIL PROTECTED]:/usr/src/sys/compile/ADDRKERN  i386
> 
> the panic reads:
> Fatal trap 12: page fault while in kernel mode
> mp_lock = 01000002; cpuid = 1; lapic.id = 01000000
> fault virtual address   = 0xc4e7f08c
> fault code              = supervisor write, page not present
> instruction pointer     = 0x8:0xc025f47a
> stack pointer           = 0x10:0xd2ed2f0c
> frame pointer           = 0x10:0xd2ed2f1c
> 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         = 12498 (httpd)
> interrupt mask          = net tty bio cam  <- SMP: XXX
> trap number             = 12
> panic: page fault
> mp_lock = 01000002; cpuid = 1; lapic.id = 01000000
> boot() called on cpu#1
> 
> nm /kernel for that area shows:
> 
> c025f314 T pmap_page_exists
> c025f30c T pmap_pageable
> c025f3a4 T pmap_remove_pages
> c025f4e0 t pmap_testbit
> 
> The server is a dual PentiumIII-450 with 512 MB of ram and DPT raid 
> controller. Max users is set at 256 (I don't know about this version, but 
> on previous versions setting it higher caused constant panics). It usually 
> runs at load average of about 2, serving apache/sendmail/telnet/ftpd/ipop3d 
> as well as a little bit of NFS data for local updates and a completely idle 
> NFS client.
> I am unable to trace the panic to any particular event, the system can run 
> high load with no problems and one of the panics was in the evening when 
> the system was running at only 0.5 load average.
> If you need any more info I would be glad to provide it. Any help regarding 
> this problem would be greatly appreciated.
> 
> Best Regards,
> Anthony Bourov
> 
> 
> 
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