login: panic: sx lock still held
cpuid = 0
time = 1552762818
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x47/frame 0xfffffe001fa45770
vpanic() at vpanic+0x1e0/frame 0xfffffe001fa457d0
panic() at panic+0x43/frame 0xfffffe001fa45830
sx_destroy() at sx_destroy+0x5e/frame 0xfffffe001fa45850
solisten_proto() at solisten_proto+0xde/frame 0xfffffe001fa458b0
uipc_listen() at uipc_listen+0x124/frame 0xfffffe001fa45900
solisten() at solisten+0x7a/frame 0xfffffe001fa45940
kern_listen() at kern_listen+0x132/frame 0xfffffe001fa45980
amd64_syscall() at amd64_syscall+0x436/frame 0xfffffe001fa45ab0
fast_syscall_common() at fast_syscall_common+0x101/frame 0xfffffe001fa45ab0
--- syscall (0, FreeBSD ELF64, nosys), rip = 0x45c3ca, rsp = 0x7fffdffdcf88, rbp = 0x6bb140 ---
KDB: enter: panic
[ thread pid 794 tid 100167 ]
Stopped at      kdb_enter+0x6a: movq    $0,kdb_why