Fatal trap 9: general protection fault while in kernel mode
cpuid = 0; apic id = 00
instruction pointer	= 0x20:0xffffffff82df2ce2
stack pointer	        = 0x28:0xfffffe00037991d0
frame pointer	        = 0x28:0xfffffe0003799210
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)
trap number		= 9
panic: general protection fault
cpuid = 0
time = 556
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x47/frame 0xfffffe0003798ea0
vpanic() at vpanic+0x1c7/frame 0xfffffe0003798f00
panic() at panic+0x43/frame 0xfffffe0003798f60
trap_fatal() at trap_fatal+0x4cd/frame 0xfffffe0003798fe0
trap() at trap+0xf7/frame 0xfffffe0003799100
calltrap() at calltrap+0x8/frame 0xfffffe0003799100
--- trap 0x9, rip = 0xffffffff82df2ce2, rsp = 0xfffffe00037991d0, rbp = 0xfffffe0003799210 ---
sctp_timer_stop() at sctp_timer_stop+0x3a2/frame 0xfffffe0003799210
sctp_stop_association_timers() at sctp_stop_association_timers+0xf9/frame 0xfffffe0003799240
sctp_free_assoc() at sctp_free_assoc+0x2b6/frame 0xfffffe00037992d0
sctp_process_control() at sctp_process_control+0x8a98/frame 0xfffffe0003799750
sctp_common_input_processing() at sctp_common_input_processing+0x7db/frame 0xfffffe00037998e0
sctp_input_with_port() at sctp_input_with_port+0x308/frame 0xfffffe00037999d0
sctp_input() at sctp_input+0x1f/frame 0xfffffe00037999f0
ip_input() at ip_input+0x388/frame 0xfffffe0003799a90
swi_net() at swi_net+0x20d/frame 0xfffffe0003799b10
ithread_loop() at ithread_loop+0x33f/frame 0xfffffe0003799bb0
fork_exit() at fork_exit+0xb3/frame 0xfffffe0003799bf0
fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe0003799bf0
--- trap 0, rip = 0, rsp = 0, rbp = 0 ---
KDB: enter: panic
[ thread pid 12 tid 100020 ]
Stopped at      kdb_enter+0x67: movq    $0,0x1471976(%rip)
db> 
db> set $lines = 0
db> set $maxwidth = 0
db> show registers
cs                        0x20
ds                        0x3b
es                        0x3b
fs                        0x13
gs                        0x1b
ss                        0x28
rax                       0x12
rcx         0xffffffff810f6a20  vprintf+0x140
rdx                        0x1
rbx                          0
rsp         0xfffffe0003798e80
rbp         0xfffffe0003798ea0
rsi                          0
rdi         0xffffffff810f6a56  vprintf+0x176
r8                           0
r9                  0xffffffff
r10         0xfffffe00037997dc
r11                       0xbf
r12         0xffffffff820671c0  ddb_dbbe
r13                          0
r14         0xffffffff8197df22
r15         0xffffffff8197df22
rip         0xffffffff810ead87  kdb_enter+0x67
rflags                    0x82
kdb_enter+0x67: movq    $0,0x1471976(%rip)
db> show proc
Process 12 (intr) at 0xfffff800044a0a50:
 state: NORMAL
 uid: 0  gids: 0
 parent: pid 0 at 0xffffffff8250fcb0
 ABI: null
 reaper: 0xffffffff8250fcb0 reapsubtree: 12
 sigparent: 20
 vmspace: 0xffffffff82510900
   (map 0xffffffff82510900)
   (map.pmap 0xffffffff825109c0)
   (pmap 0xffffffff82510a20)
 threads: 23
100011                   I                                   [swi5: fast taskq]
100014                   I                                   [swi6: task queue]
100015                   I                                   [swi6: Giant taskq]
100020                   Run     CPU 0                       [swi1: netisr 0]
100021                   I                                   [swi4: clock (0)]
100022                   I                                   [swi4: clock (1)]
100023                   I                                   [swi3: vm]
100035                   I                                   [irq24: virtio_pci0]
100036                   I                                   [irq25: virtio_pci0]
100037                   I                                   [irq26: virtio_pci0]
100038                   I                                   [irq27: virtio_pci0]
100039                   I                                   [irq28: virtio_pci1]
100040                   I                                   [irq29: virtio_pci1]
100041                   I                                   [irq30: virtio_pci1]
100042                   I                                   [irq31: virtio_pci1]
100043                   I                                   [irq32: virtio_pci1]
100048                   I                                   [irq10: virtio_pci2]
100050                   I                                   [irq1: atkbd0]
100051                   I                                   [irq12: psm0]
100052                   I                                   [swi0: uart uart++]
100060                   I                                   [swi1: pf send]
100073                   I                                   [swi1: hpts]
100074                   I                                   [swi1: hpts]
db>