Nevermind me. That's what I thought why I was getting the same gpart behavior switching between kernels, with and without DEBUG_LOCKS. Sorry about that. Same here, gpart hangs on: 3826 gpart CALL __sysctl(0x7fffffffa250,0x3,0,0x7fffffffa268,0,0) 3826 gpart SCTL "kern.geom.confxml" Yuri