panic: sx lock still held
cpuid = 1
time = 1571040591
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x47/frame 0xfffffe0022b78740
vpanic() at vpanic+0x1c7/frame 0xfffffe0022b787b0
panic() at panic+0x43/frame 0xfffffe0022b78810
sx_destroy() at sx_destroy+0x63/frame 0xfffffe0022b78830
solisten_proto() at solisten_proto+0xd2/frame 0xfffffe0022b78890
tcp6_usr_listen() at tcp6_usr_listen+0x1cc/frame 0xfffffe0022b788f0
solisten() at solisten+0x7a/frame 0xfffffe0022b78930
kern_listen() at kern_listen+0x125/frame 0xfffffe0022b78970
ia32_syscall() at ia32_syscall+0x466/frame 0xfffffe0022b78ab0
int0x80_syscall_common() at int0x80_syscall_common+0x9c/frame 0x8142e3e
KDB: enter: panic
[ thread pid 7144 tid 100329 ]
Stopped at      kdb_enter+0x67: movq    $0,0x1477666(%rip)