panic: sx lock still held
cpuid = 1
time = 1559601083
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x47/frame 0xfffffe0020efe740
vpanic() at vpanic+0x1e0/frame 0xfffffe0020efe7a0
panic() at panic+0x43/frame 0xfffffe0020efe800
sx_destroy() at sx_destroy+0x5e/frame 0xfffffe0020efe820
solisten_proto() at solisten_proto+0xde/frame 0xfffffe0020efe880
sctp_listen() at sctp_listen+0x4eb/frame 0xfffffe0020efe8f0
solisten() at solisten+0x7a/frame 0xfffffe0020efe930
kern_listen() at kern_listen+0x132/frame 0xfffffe0020efe970
ia32_syscall() at ia32_syscall+0x452/frame 0xfffffe0020efeab0
int0x80_syscall_common() at int0x80_syscall_common+0x9c/frame 0x8142c6e
KDB: enter: panic
[ thread pid 900 tid 100229 ]
Stopped at      kdb_enter+0x6a: movq    $0,kdb_why