Hardware or software error ?

[Heinrich Rebehn]

Lowell Gilbert wrote:
> Heinrich Rebehn <rebehn at ant.uni-bremen.de> writes:
> 
> 
>>Hi list,
>>
>>does anybody have a clue, if the following is a hard or software error?
>>
>>#########################################################################
>>  syslogd: kernel boot file is /boot/kernel/kernel
>>  kernel:
>>  kernel:
>>  kernel: Fatal trap 12: page fault while in kernel mode
>>  kernel: cpuid = 0; apic id = 00
>>  kernel: fault virtual address   = 0x4
>>  kernel: fault code              = supervisor read, page not present
>>  kernel: instruction pointer     = 0x8:0xc0533f98
>>  kernel: stack pointer           = 0x10:0xe11f6b3c
>>  kernel: frame pointer           = 0x10:0xe11f6b64
>>  kernel: code segment            = base 0x0, limit 0xfffff, type 0x1b
>>  kernel: = DPL 0, pres 1, def32 1, gran 1
>>  kernel: processor eflags        = interrupt enabled, resume, IOPL = 0
>>  kernel: current process         = 29 (swi1: net)
>>  kernel: trap number             = 12
>>  kernel: panic: page fault
>>  kernel: cpuid = 0;
>>  kernel:
>>  kernel: syncing disks, buffers remaining...
>>  kernel:
>>  kernel: Fatal trap 12: page fault while in kernel mode
>>  kernel: cpuid = 0; apic id = 00
>>  kernel: fault virtual address   = 0x4
>>  kernel: fault code              = supervisor read, page not present
>>  kernel: instruction pointer     = 0x8:0xc0533f98
>>  kernel: stack pointer           = 0x10:0xe124bbcc
>>  kernel: frame pointer           = 0x10:0xe124bbf4
>>  kernel: code segment            = base 0x0, limit 0xfffff, type 0x1b
>>  kernel: = DPL 0, pres 1, def32 1, gran 1
>>  kernel: processor eflags        = interrupt enabled, resume, IOPL = 0
>>  kernel: current process         = 26 (irq15: xl0 ata1+)
>>  kernel: trap number             = 12
>>  kernel: panic: page fault
>>  kernel: cpuid = 0;
>>  kernel: Uptime: 3d10h11m49s
>>#########################################################################
>>
>>The system is running FreeBSD 5.2.1-RC2
> 
> 
> More likely to be a software problem, although it could be either.  
> Could you take a kernel dump to the -CURRENT list?

I'm afraid my system is not set up to enable crash dumps. I must admit 
that i never cared about this, and unfortunately, the default install 
does not seem to enable it either. If i am wrong: where would i find the 
dump?

Also, since this is our main server, i prefer going back to 4.9 which 
seems to be more solid than 5.2 :-(. I simply don't have time to do more 
experiments.

Thank ayou for your help anyway.

	Heinrich

-- 

Heinrich Rebehn

University of Bremen
Physics / Electrical and Electronics Engineering
- Department of Telecommunications -

Phone : +49/421/218-4664
Fax   :            -3341