Fatal trap 12: page fault while in kernel mode
cpuid = 1; apic id = 01
fault virtual address	= 0xffffffffffffffff
fault code		= supervisor write data, page not present
instruction pointer	= 0x20:0xffffffff8193ee61
stack pointer	        = 0x28:0xfffffe0057351cf0
frame pointer	        = 0x28:0xfffffe0057351d30
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 (swi1: netisr 0)
rdi: fffffe00787e5000 rsi: 0000000000000000 rdx: 0000000001000000
rcx: 0000000000000000  r8: 0000000000000000  r9: 0000000000000001
rax: ffffffffffffffff rbx: fffffe006e729760 rbp: fffffe0057351d30
r10: 0000000000000000 r11: 000000000000000f r12: fffffe00787e5000
r13: fffffe00787e5008 r14: fffffe00787e5044 r15: ffffffffffffffff
trap number		= 12
panic: page fault
cpuid = 1
time = 1740964835
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0xc6/frame 0xfffffe0057351510
kdb_backtrace() at kdb_backtrace+0xd0/frame 0xfffffe0057351670
vpanic() at vpanic+0x257/frame 0xfffffe0057351830
panic() at panic+0xb5/frame 0xfffffe00573518f0
trap_pfault() at trap_pfault+0xab4/frame 0xfffffe0057351a30
trap() at trap+0x753/frame 0xfffffe0057351c20
calltrap() at calltrap+0x8/frame 0xfffffe0057351c20
--- trap 0xc, rip = 0xffffffff8193ee61, rsp = 0xfffffe0057351cf0, rbp = 0xfffffe0057351d30 ---
in_pcbremhash_locked() at in_pcbremhash_locked+0x2c1/frame 0xfffffe0057351d30
in_pcbdrop() at in_pcbdrop+0x98/frame 0xfffffe0057351d50
tcp_close() at tcp_close+0x177/frame 0xfffffe0057351e10
rack_do_syn_sent() at rack_do_syn_sent+0x12a/frame 0xfffffe0057351f40
rack_do_segment_nounlock() at rack_do_segment_nounlock+0x409e/frame 0xfffffe0057352680
rack_do_segment() at rack_do_segment+0x17c/frame 0xfffffe0057352750
tcp_input_with_port() at tcp_input_with_port+0x21ba/frame 0xfffffe0057352a20
tcp6_input_with_port() at tcp6_input_with_port+0xeb/frame 0xfffffe0057352a60
tcp6_input() at tcp6_input+0x26/frame 0xfffffe0057352a90
ip6_input() at ip6_input+0x2285/frame 0xfffffe0057352cf0
swi_net() at swi_net+0x2b8/frame 0xfffffe0057352d90
ithread_loop() at ithread_loop+0x4ec/frame 0xfffffe0057352ef0