show locks
exclusive sleep mutex taskqueue r = 0 (0xc4d5399) locked @ /usr/src/sys/kern/subr_taskqueue.c:73

exclusive sx sysctl lock r = 0 (0xc08cc554) locked @ /usr/src/sys/kern/kern_sysctl.c:1396
exclusive sleep mutex Giant r = 0 (0xc08cbfb0) locked @ /usr/src/sys/kern/kern_sysctl.c:1334



ps:

1084 1061 1084 0 R+ CPU 1        sysctl
1083 0 0 0 SL GEOM top 0xc08ca54c [gv_worker]
.................................csh