or download this
--- linux/fs/proc/base.c.orig Sat Jan 27 15:18:24 2001
+++ linux/fs/proc/base.c Sat Jan 27 15:19:19 2001
...
- E(PROC_PID_CMDLINE, "cmdline", S_IFREG|S_IRUGO),
+ E(PROC_PID_CMDLINE, "cmdline", S_IFREG|S_IRUSR),
E(PROC_PID_STAT, "stat", S_IFREG|S_IRUGO),