panic: page fault
Kris Kennaway
kris at obsecurity.org
Mon Nov 15 03:22:33 GMT 2004
On Sun, Nov 14, 2004 at 10:12:49PM -0500, kalin mintchev wrote:
> > On Sun, Nov 14, 2004 at 09:04:32PM -0500, kalin mintchev wrote:
> >> ok... about every 6 - 7 days the machine reboots because of this:
> >>
> >> /kernel: Fatal trap 12: page fault while in kernel mode
> >> /kernel: fault virtual address = 0xbeff2
> >> /kernel: fault code = supervisor read, page not present
> >> /kernel: instruction pointer = 0x8:0xc0305ed3
> >> /kernel: stack pointer = 0x10:0xd7ec9e18
> >> /kernel: frame pointer = 0x10:0xd7ec9e20
> >> /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 = 29374 (perl)
> >> /kernel: interrupt mask = net tty bio cam
> >> /kernel: trap number = 12
> >> /kernel: panic: page fault
> >>
> >> where do i look?
> >>
> >> thanks..........
> >
> > You forgot to mention what version of FreeBSD you're running..if it's
> > old, upgrade to the latest version, because bugs are located and fixed
> > all the time.
>
> thank you Kris. you are right. sorry. FreeBSD4.6-RELEASE
>
> well.. i'm pretty sure the problem is caused by the courier imap server.
> it wasn't doing it before i installed qmail and courier.
> the courier starts executing a command called 'ulimit'
> the original script uses the -v flag to the command to assign virtual
> memory. the thing is this bsd version ulimit doesn't support _any_ flags.
> when i was starting it with the flag i was getting error message that the
> flag is not supported and the machine was crashing after a while with a
> message about virtual memory problems. so i took the flag out... now it
> crashes with this panic...
Follow my advice then..
Kris
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