panic: udp_output: shared udbinfo lock, excl inp lock
cpuid = 0
time = 509
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x47/frame 0xfffffe002a5d5550
vpanic() at vpanic+0x1e0/frame 0xfffffe002a5d55b0
panic() at panic+0x43/frame 0xfffffe002a5d5610
udp_send() at udp_send+0x139c/frame 0xfffffe002a5d5730
sosend_dgram() at sosend_dgram+0x550/frame 0xfffffe002a5d57a0
sosend() at sosend+0xc6/frame 0xfffffe002a5d5810
kern_sendit() at kern_sendit+0x35e/frame 0xfffffe002a5d58c0
sendit() at sendit+0x226/frame 0xfffffe002a5d5920
sys_sendto() at sys_sendto+0x5c/frame 0xfffffe002a5d5980
amd64_syscall() at amd64_syscall+0x436/frame 0xfffffe002a5d5ab0
fast_syscall_common() at fast_syscall_common+0x101/frame 0xfffffe002a5d5ab0
--- syscall (198, FreeBSD ELF64, nosys), rip = 0x41309a, rsp = 0x7fffdffdcf38, rbp = 0x6 ---
KDB: enter: panic
[ thread pid 6921 tid 100812 ]
Stopped at      kdb_enter+0x6a: movq    $0,kdb_why