panic: Memory modified after free 0xfffffe002592e140(736) val=deadc0e6 @ 0xfffffe002592e288

cpuid = 1
time = 1606127043
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x47/frame 0xfffffe0003635e10
vpanic() at vpanic+0x1c7/frame 0xfffffe0003635e70
panic() at panic+0x43/frame 0xfffffe0003635ed0
trash_ctor() at trash_ctor+0xa8/frame 0xfffffe0003635f10
item_ctor() at item_ctor+0x1e2/frame 0xfffffe0003635f70
sctp_add_remote_addr() at sctp_add_remote_addr+0x570/frame 0xfffffe0003635fe0
sctp_handle_asconf() at sctp_handle_asconf+0x14a7/frame 0xfffffe00036362d0
sctp_process_control() at sctp_process_control+0x1697/frame 0xfffffe0003636750
sctp_common_input_processing() at sctp_common_input_processing+0x7db/frame 0xfffffe00036368e0
sctp_input_with_port() at sctp_input_with_port+0x308/frame 0xfffffe00036369d0
sctp_input() at sctp_input+0x1f/frame 0xfffffe00036369f0
ip_input() at ip_input+0x388/frame 0xfffffe0003636a90
swi_net() at swi_net+0x20d/frame 0xfffffe0003636b10
ithread_loop() at ithread_loop+0x33f/frame 0xfffffe0003636bb0
fork_exit() at fork_exit+0xb3/frame 0xfffffe0003636bf0
fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe0003636bf0
--- trap 0, rip = 0, rsp = 0, rbp = 0 ---
KDB: enter: panic
[ thread pid 12 tid 100020 ]
Stopped at      kdb_enter+0x67: movq    $0,0x14881f6(%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                       0x80
rdx         0xffffffff818bcbb0
rbx                          0
rsp         0xfffffe0003635df0
rbp         0xfffffe0003635e10
rsi                        0x1
rdi                          0
r8                           0
r9                  0xffffffff
r10         0xaa0114ac08000500
r11                 0x3c938c9c
r12         0xffffffff820671c0  ddb_dbbe
r13                          0
r14         0xffffffff8196440b
r15         0xffffffff8196440b
rip         0xffffffff810d3407  kdb_enter+0x67
rflags                    0x86
kdb_enter+0x67: movq    $0,0x14881f6(%rip)
db> show proc
Process 12 (intr) at 0xfffff800042b9a50:
 state: NORMAL
 uid: 0  gids: 0
 parent: pid 0 at 0xffffffff8250ebb0
 ABI: null
 reaper: 0xffffffff8250ebb0 reapsubtree: 12
 sigparent: 20
 vmspace: 0xffffffff8250f800
   (map 0xffffffff8250f800)
   (map.pmap 0xffffffff8250f8c0)
   (pmap 0xffffffff8250f920)
 threads: 23
100011                   I                                   [swi5: fast taskq]
100014                   I                                   [swi6: task queue]
100015                   I                                   [swi6: Giant taskq]
100020                   Run     CPU 1                       [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]
100076                   I                                   [swi1: hpts]
100077                   I                                   [swi1: hpts]
db>