FreeBSD child process die for root

[Sagara Wijetunga]

Carlos A. M. dos Santos writes: 

> Try to debug the "login" program: 
> 
> (become root)
> # cd /usr/src/usr.bin/login
> # make clean
> # make CFLAGS=-g
> # gdb /usr/obj/usr/src/usr.bin/login/login
> (supposing that "sagara" is your user name)
> #run sagara
> (fill-in the password name, if requested) 
> 
> If the signal 11 is caught, issue "bt" command in gcc. It will show
> you where the break happened. 
> 

I tried to debug the login program, here are the results:
1. For normal users, gdb exists "Program exited normally." 

2. For root, gdb says "Login incorrect".
   On /var/log/messages:
   login: pam_acct_mgmt(): authentication error
   login: 1 LOGIN FAILURE ON ttyp0 

Btw, I have mentioned in my first post that I do not have an issue with 
normal user logins. Its only root has a problem. 

When try to "su -l" from a normal user, there is no "pam_acct_mgmt(): 
authentication error" on logs. Its only a "(su), uid 0: exited on signal 
11". 

Regards
Sagara