panic: sbflush_internal: ccc 0 mb 0 mbcnt 256 cpuid = 0 time = 35439 KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0x47/frame 0xfffffe00213c4730 vpanic() at vpanic+0x1e0/frame 0xfffffe00213c4790 panic() at panic+0x43/frame 0xfffffe00213c47f0 sbrelease_internal() at sbrelease_internal+0x174/frame 0xfffffe00213c4830 solisten_proto() at solisten_proto+0xc6/frame 0xfffffe00213c4890 sctp_listen() at sctp_listen+0x4eb/frame 0xfffffe00213c4900 solisten() at solisten+0x7a/frame 0xfffffe00213c4940 kern_listen() at kern_listen+0x132/frame 0xfffffe00213c4980 amd64_syscall() at amd64_syscall+0x436/frame 0xfffffe00213c4ab0 fast_syscall_common() at fast_syscall_common+0x101/frame 0xfffffe00213c4ab0 --- syscall (198, FreeBSD ELF64, nosys), rip = 0x412f1a, rsp = 0x7fffdfffdf38, rbp = 0x2 --- KDB: enter: panic [ thread pid 4049 tid 100976 ] Stopped at kdb_enter+0x6a: movq $0,kdb_why