panic: Counter goes negative
cpuid = 0
time = 1552949666
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x47/frame 0xfffffe001f5fc430
vpanic() at vpanic+0x1e0/frame 0xfffffe001f5fc490
panic() at panic+0x43/frame 0xfffffe001f5fc4f0
sctp_sorecvmsg() at sctp_sorecvmsg+0x30cf/frame 0xfffffe001f5fc640
sctp_soreceive() at sctp_soreceive+0x243/frame 0xfffffe001f5fc850
soreceive() at soreceive+0xb9/frame 0xfffffe001f5fc8b0
dofileread() at dofileread+0xd3/frame 0xfffffe001f5fc910
kern_readv() at kern_readv+0x66/frame 0xfffffe001f5fc950
sys_readv() at sys_readv+0x50/frame 0xfffffe001f5fc980
amd64_syscall() at amd64_syscall+0x436/frame 0xfffffe001f5fcab0
fast_syscall_common() at fast_syscall_common+0x101/frame 0xfffffe001f5fcab0
--- syscall (198, FreeBSD ELF64, nosys), rip = 0x412e5a, rsp = 0x7fffdffdcf38, rbp = 0x3 ---
KDB: enter: panic
[ thread pid 2183 tid 100523 ]
Stopped at      kdb_enter+0x6a: movq    $0,kdb_why