panic in sctp_del_addr_from_vrf() ?

got this panic when network interfaces were being unconfigured during
system shutdown. has anyone seen this? should i file a PR?

thanks
kit

test.yahoo.com dumped core - see /home/crash/vmcore.2

Sat May  4 20:43:55 MYT 2013

FreeBSD test.yahoo.com 10.0-CURRENT FreeBSD 10.0-CURRENT #0 r250229: Sat May  4 20:30:17 MYT 2013     ktsin_at_test.yahoo.com:/tmp/obj/usr/src/sys/SHUTTLE  amd64

panic: page fault

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Unread portion of the kernel message buffer:
.
<118>Writing entropy file:.
<118>.
<118>Terminated
<118>May  4 20:42:00 test syslogd: exiting on signal 15


Fatal trap 12: page fault while in kernel mode
cpuid = 4; apic id = 04
fault virtual address   = 0x8c
fault code              = supervisor read data, page not present
instruction pointer     = 0x20:0xffffffff8066e71c
stack pointer           = 0x28:0xffffff82187fb5d0
frame pointer           = 0x28:0xffffff82187fb620
code segment            = base 0x0, limit 0xfffff, type 0x1b
                        = DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags        = interrupt enabled, resume, IOPL = 0
current process         = 474 (wpa_supplicant)
trap number             = 12
panic: page fault
cpuid = 4
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xffffff82187fb190
kdb_backtrace() at kdb_backtrace+0x39/frame 0xffffff82187fb240
panic() at panic+0x155/frame 0xffffff82187fb2c0
trap_fatal() at trap_fatal+0x37a/frame 0xffffff82187fb320
trap_pfault() at trap_pfault+0x257/frame 0xffffff82187fb3c0
trap() at trap+0x43a/frame 0xffffff82187fb510
calltrap() at calltrap+0x8/frame 0xffffff82187fb510
--- trap 0xc, rip = 0xffffffff8066e71c, rsp = 0xffffff82187fb5d0, rbp = 0xffffff82187fb620 ---
sctp_del_addr_from_vrf() at sctp_del_addr_from_vrf+0x7c/frame 0xffffff82187fb620
rt_newaddrmsg_fib() at rt_newaddrmsg_fib+0x44/frame 0xffffff82187fb6e0
rtinit1() at rtinit1+0x57b/frame 0xffffff82187fb860
in_scrubprefix() at in_scrubprefix+0x376/frame 0xffffff82187fb900
rip_ctlinput() at rip_ctlinput+0x143/frame 0xffffff82187fb930
pfctlinput() at pfctlinput+0x5c/frame 0xffffff82187fb960
ifioctl() at ifioctl+0x7f2/frame 0xffffff82187fba20
kern_ioctl() at kern_ioctl+0x22e/frame 0xffffff82187fba90
sys_ioctl() at sys_ioctl+0x142/frame 0xffffff82187fbae0
amd64_syscall() at amd64_syscall+0x2b4/frame 0xffffff82187fbbf0
Xfast_syscall() at Xfast_syscall+0xfb/frame 0xffffff82187fbbf0
--- syscall (54, FreeBSD ELF64, sys_ioctl), rip = 0x80122c26a, rsp = 0x7fffffffdb18, rbp = 0x7fffffffdb90 ---
Uptime: 4m55s