On Sat, Mar 14, 2015 at 11:53:10AM +0100, BERTRAND Joël wrote: > text_access_fault: pc=5ab4bce8 va=5ab4a000 Can you do (or add to ddb.onpanic) a "mach stack" here? Do you have a netbsd.gdb? If so do "gdb netbsd.gdb" and do list *(0x5ab4bce8) or (if no netbsd.gdb): gdb netbsd x/16i 0x5ab4bce8 Thanks! Martin