SYS_upanic
case SYS_upanic: /* upanic() */
praddset(&traceeven, SYS_upanic);
(void) Psysentry(Proc, SYS_upanic, TRUE);
(void) Psysexit(Proc, SYS_upanic, FALSE);
(void) syscall(SYS_upanic, buf, len);
audit_finish(0, SYS_upanic, 0, NULL);