Warning: Permanently added '10.128.10.6' (ECDSA) to the list of known hosts. executing program login: panic: udp_output: shared udbinfo lock, excl inp lock cpuid = 0 time = 1552656588 KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0x47/frame 0xfffffe001fa13560 vpanic() at vpanic+0x1e0/frame 0xfffffe001fa135c0 panic() at panic+0x43/frame 0xfffffe001fa13620 udp_send() at udp_send+0x1377/frame 0xfffffe001fa13730 sosend_dgram() at sosend_dgram+0x550/frame 0xfffffe001fa137a0 sosend() at sosend+0xc6/frame 0xfffffe001fa13810 kern_sendit() at kern_sendit+0x35e/frame 0xfffffe001fa138c0 sendit() at sendit+0x226/frame 0xfffffe001fa13920 sys_sendmsg() at sys_sendmsg+0x8b/frame 0xfffffe001fa13980 amd64_syscall() at amd64_syscall+0x436/frame 0xfffffe001fa13ab0 fast_syscall_common() at fast_syscall_common+0x101/frame 0xfffffe001fa13ab0 --- syscall (0, FreeBSD ELF64, nosys), rip = 0x41c3aa, rsp = 0x7fffffffeae8, rbp = 0x7fffffffeb40 --- KDB: enter: panic [ thread pid 759 tid 100097 ] Stopped at kdb_enter+0x6a: movq $0,kdb_why