The sysctl.h doesn't include comment for struct kinfo_proc.p_comm. Add field comment as all other fields seem to be commented.
Timo Index: sysctl.h =================================================================== RCS file: /cvs/src/sys/sys/sysctl.h,v retrieving revision 1.121 diff -u -u -r1.121 sysctl.h --- sysctl.h 23 Mar 2012 15:51:26 -0000 1.121 +++ sysctl.h 7 Apr 2012 09:14:32 -0000 @@ -388,7 +388,7 @@ u_int16_t p_xstat; /* U_SHORT: Exit status for wait; also stop signal. */ u_int16_t p_acflag; /* U_SHORT: Accounting flags. */ - char p_comm[KI_MAXCOMLEN]; + char p_comm[KI_MAXCOMLEN]; /* original command name */ char p_wmesg[KI_WMESGLEN]; /* wchan message */ u_int64_t p_wchan; /* PTR: sleep address. */