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Date:      08 Nov 2002 08:21:51 -0500
From:      Jim Frost <jimf@frostbytes.com>
To:        freebsd-stable@freebsd.org
Subject:   Regular crash with 4.6-stable
Message-ID:  <1036761712.7375.14.camel@snowball.frostbytes.com>

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Using the CD release of 4.6 I was seeing a crash every morning at 3:04
or 3:05.  Log file information is:

-- cut here --
Oct 25 03:04:13 hailstorm /kernel: Fatal trap 12: page fault while in
kernel mode
Oct 25 03:04:13 hailstorm /kernel: fault virtual address        = 0x0
Oct 25 03:04:13 hailstorm /kernel: fault code           = supervisor
read, page not present
Oct 25 03:04:13 hailstorm /kernel: instruction pointer  = 0x8:0x0
Oct 25 03:04:13 hailstorm /kernel: stack pointer                =
0x10:0xd7cf1ea8
Oct 25 03:04:13 hailstorm /kernel: frame pointer                =
0x10:0xd7cf1ebc
Oct 25 03:04:13 hailstorm /kernel: code segment         = base 0x0,
limit 0xfffff, type 0x1b
Oct 25 03:04:13 hailstorm /kernel: = DPL 0, pres 1, def32 1, gran 1
Oct 25 03:04:13 hailstorm /kernel: processor eflags     = interrupt
enabled, resume, IOPL = 0
Oct 25 03:04:13 hailstorm /kernel: current process              = 10682
(ipfw)
Oct 25 03:04:13 hailstorm /kernel: interrupt mask               = none
Oct 25 03:04:13 hailstorm /kernel: trap number          = 12
Oct 25 03:04:13 hailstorm /kernel: panic: page fault
-- cut here --

Once I figured out how ipfw was being invoked (periodic is using it to
send out firewall summaries) I had no trouble disabling it and stopping
the crashes.

I don't actually use the machine for a firewall; perhaps that's why ipfw
is having trouble, but it seems wrong for it to cause a panic :-).

Machine is a 1.6GHz Pentium 4, 512M memory.

Anyone seen this before?  Is it fixed in more recent releases?  I'll be
upgrading to 4.7 soonish.

jim



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