LACP: Fatal trap 18: integer divide fault while in kernel mode

[Slawa Olhovchenkov]

I am got panic on recent stable:

Fatal trap 18: integer divide fault while in kernel mode
cpuid = 3; apic id = 06
instruction pointer     = 0x20:0xffffffff81453230
stack pointer           = 0x28:0xfffffe3e56f46480
frame pointer           = 0x28:0xfffffe3e56f464a0
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         = 12 (swi4: clock (3))
trap number             = 18
panic: integer divide fault
cpuid = 3
KDB: stack backtrace:
db_trace_self_wrapper() at 0xffffffff8032b3eb = db_trace_self_wrapper+0x2b/frame 0xfffffe3e56f460c0
vpanic() at 0xffffffff804e33a6 = vpanic+0x186/frame 0xfffffe3e56f46140
panic() at 0xffffffff804e3213 = panic+0x43/frame 0xfffffe3e56f461a0
trap_fatal() at 0xffffffff807b07c2 = trap_fatal+0x322/frame 0xfffffe3e56f461f0
trap() at 0xffffffff807b0475 = trap+0x6b5/frame 0xfffffe3e56f463b0
calltrap() at 0xffffffff807946b1 = calltrap+0x8/frame 0xfffffe3e56f463b0
--- trap 0x12, rip = 0xffffffff81453230, rsp = 0xfffffe3e56f46480, rbp = 0xfffffe3e56f464a0 ---
lacp_select_tx_port() at 0xffffffff81453230 = lacp_select_tx_port+0x70/frame 0xfffffe3e56f464a0
lagg_lacp_start() at 0xffffffff814504ae = lagg_lacp_start+0xe/frame 0xfffffe3e56f464c0
lagg_transmit() at 0xffffffff8144e73f = lagg_transmit+0xbf/frame 0xfffffe3e56f46530
ether_output() at 0xffffffff805f30bc = ether_output+0x71c/frame 0xfffffe3e56f465d0
ip_output() at 0xffffffff80629935 = ip_output+0x1585/frame 0xfffffe3e56f46720
tcp_output() at 0xffffffff806b9e16 = tcp_output+0x1876/frame 0xfffffe3e56f468c0
tcp_timer_rexmt() at 0xffffffff806c572f = tcp_timer_rexmt+0x4df/frame 0xfffffe3e56f46900
softclock_call_cc() at 0xffffffff804fd1b6 = softclock_call_cc+0x156/frame 0xfffffe3e56f469b0
softclock() at 0xffffffff804fd754 = softclock+0x94/frame 0xfffffe3e56f469e0
intr_event_execute_handlers() at 0xffffffff8049d15f = intr_event_execute_handlers+0x20f/frame 0xfffffe3e56f46a20
ithread_loop() at 0xffffffff8049d766 = ithread_loop+0xc6/frame 0xfffffe3e56f46a70
fork_exit() at 0xffffffff80499e25 = fork_exit+0x85/frame 0xfffffe3e56f46ab0
fork_trampoline() at 0xffffffff80794bee = fork_trampoline+0xe/frame 0xfffffe3e56f46ab0
--- trap 0, rip = 0, rsp = 0, rbp = 0 ---

(kgdb) info line *0xffffffff81453230
Line 848 of "/usr/src/sys/modules/if_lagg/../../net/ieee8023ad_lacp.c" starts at address 0xffffffff8145322e <lacp_select_tx_port+110> and ends at 0xffffffff81453233 <lacp_select_tx_port+115>.

Do I need to create PR?