RELENG_7 crash

The box has a fairly heavy UDP load. Its RELENG_7 as of today and took 3hrs for it to dump core.

Fatal trap 12: page fault while in kernel mode
cpuid = 1; apic id = 01
fault virtual address = 0x68
fault code = supervisor read, page not present
instruction pointer = 0x20:0xc0637146
stack pointer = 0x28:0xe766eaac
frame pointer = 0x28:0xe766eb54
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 = 761 (bsnmpd)
trap number = 12
panic: page fault
cpuid = 1
Uptime: 3h47m43s
Physical memory: 2036 MB
Dumping 83 MB: 68 52 36 20 4

(kgdb) bt
#0 doadump () at pcpu.h:196
#1 0xc05964d7 in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:418
#2 0xc05967a9 in panic (fmt=Variable "fmt" is not available.
) at /usr/src/sys/kern/kern_shutdown.c:574
#3 0xc07f64ac in trap_fatal (frame=0xe766ea6c, eva=104) at /usr/src/sys/i386/i386/trap.c:939
#4 0xc07f6730 in trap_pfault (frame=0xe766ea6c, usermode=0, eva=104) at /usr/src/sys/i386/i386/trap.c:852
#5 0xc07f70dc in trap (frame=0xe766ea6c) at /usr/src/sys/i386/i386/trap.c:530
#6 0xc07db7eb in calltrap () at /usr/src/sys/i386/i386/exception.s:159
#7 0xc0637146 in sysctl_ifdata (oidp=0xc08816a0, arg1=0xe766ec24, arg2=2, req=0xe766eba4) at /usr/src/sys/net/if_mib.c:127
#8 0xc059fd77 in sysctl_root (oidp=Variable "oidp" is not available.
) at /usr/src/sys/kern/kern_sysctl.c:1413
#9 0xc059ff14 in userland_sysctl (td=0xc5374460, name=0xe766ec14, namelen=6, old=0x0, oldlenp=0xbfbf8478, inkernel=0, new=0x0,
newlen=0, retval=0xe766ec10, flags=0) at /usr/src/sys/kern/kern_sysctl.c:1506
#10 0xc05a0064 in __sysctl (td=0xc5374460, uap=0xe766ecfc) at /usr/src/sys/kern/kern_sysctl.c:1443
#11 0xc07f6a85 in syscall (frame=0xe766ed38) at /usr/src/sys/i386/i386/trap.c:1090
#12 0xc07db850 in Xint0x80_syscall () at /usr/src/sys/i386/i386/exception.s:255
#13 0x00000033 in ?? ()
Previous frame inner to this frame (corrupt stack?)
(kgdb)

--------------------------------------------------------------------
Mike Tancsa, tel +1 519 651 3400
Sentex Communications, mike@xxxxxxxxxx
Providing Internet since 1994 www.sentex.net
Cambridge, Ontario Canada www.sentex.net/mike

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