Apply by doing: cd /usr/src patch -p0 < 010_i386machdep.patch And then rebuild your kernel. Index: sys/arch/i386/i386/sys_machdep.c =================================================================== RCS file: /cvs/src/sys/arch/i386/i386/sys_machdep.c,v retrieving revision 1.23 retrieving revision 1.23.8.1 diff -u -p -r1.23 -r1.23.8.1 --- sys/arch/i386/i386/sys_machdep.c 1 Feb 2004 12:26:45 -0000 1.23 +++ sys/arch/i386/i386/sys_machdep.c 13 Jan 2006 04:42:10 -0000 1.23.8.1 @@ -394,6 +394,13 @@ i386_set_ioperm(p, args, retval) if ((error = suser(p, 0)) != 0) return error; +#ifdef APERTURE + if (!allowaperture && securelevel > 0) + return EPERM; +#else + if (securelevel > 0) + return EPERM; +#endif if ((error = copyin(args, &ua, sizeof(ua))) != 0) return (error);