grsecurity forums

Hi,

I've noticed the following behaviour on my Linux 2.6.10 box (grsecurity-2.1.1, development version 01/14/2005).

After running "gradm -a role" or "gradm -D" in a xterm (e.g. /dev/pts/0) the filesystem /dev/pts is busy when I'm shutting down the system (/dev/pts is empty, though). Due to this, the root filesystem cannot be unmounted as well.

The problem does not occur, if gradm is used on a virtual console (/dev/tty1 for example).

-vs

Can you do a lsof | grep pts ?

-Brad

I've put "lsof | grep pts" in my shutdown script and got no output.

The only running user processes were bash and init (ensured by calling "killall5 -15" and "killall5 -9" and verified with "ps aux").

"umount /dev/pts" still reports "umount: /dev/pts: device is busy".

Everything works fine with Linux 2.6.7 + grsecurity-2.0.1 on the same machine.

Apply this patch:

http://cvsweb.grsecurity.net/index.cgi/ ... 1=1.24&f=u

It should fix the problem.

-Brad

Thanks, the problem is fixed.

-vs