Re: 2.6.25.3: su gets stuck for root

Joe Peterson
2008-06-11T14:04:34Z

Joe Peterson wrote:
> Anyway, here is more info:
>
> tty_check_change: current->signal->tty = f7880800
> tty_check_change: tty = f7880800
> tty_check_change: tty->pgrp = f7b99e40
> tty->pgrp->count = 5
> tty->pgrp->level = 0
> tty->pgrp->numbers[0].nr = 6951
> tty_check_change: task_pgrp(current) = f7b99d40
> task_pgrp(current)->count = 1
> task_pgrp(current)->level = 0
> task_pgrp(current)->numbers[0].nr = 6952
> tty_check_change: kill_pgrp called; returning -ERESTARTSYS
> set_termios: error return value (-512) from tty_check_change
> foo 6951 0.0 0.1 2332 1096 tty1 S+ 14:18 0:00 su foo
> foo 6952 0.0 0.1 2988 1464 tty1 S 14:18 0:00 bash
>
>
> So, looks like the tty->pgrp's process is the "su" command itself, and
> the task_pgrp(current)'s process is "bash" - the shell started by the su.

If anyone has any tips for my further debugging of this, given the
above, let me know. I'd like to help resolve this.

Thanks! Joe