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Date:      Fri, 03 Jul 2009 07:27:05 -0500
From:      "Sagara Wijetunga" <sagara@tomahawk.com.sg>
To:        "Carlos A. M. dos Santos" <unixmania@gmail.com>
Cc:        Roland Smith <rsmith@xs4all.nl>, freebsd-stable@freebsd.org
Subject:   Re: FreeBSD child process die for root
Message-ID:  <20090703122705.6456.qmail@us1.tomahawkonline.net>
In-Reply-To: <e71790db0907021628k19f9ebxcc89f94d56a903cd@mail.gmail.com>
References:  <20090701070409.7740.qmail@us1.tomahawkonline.net> <20090701174930.GC37269@slackbox.xs4all.nl> <20090702012352.17934.qmail@us1.tomahawkonline.net> <20090702062738.GA58158@slackbox.xs4all.nl> <20090702041707.19651.qmail@us1.tomahawkonline.net> <e71790db0907021628k19f9ebxcc89f94d56a903cd@mail.gmail.com>

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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



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