Messages in this thread | | | Date | Wed, 04 Jun 2008 14:32:50 -0600 | From | Joe Peterson <> | Subject | Re: 2.6.25.3: su gets stuck for root |
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Alan Cox wrote: >> tty = current->signal->tty = -142080000 or 0xf7880800 >> task->pgrg = -142405824 or 0xf7830f40 > > task->pgrp is a struct pid - you need the value it holds
Yeah, I figured later that giving you the addresses was rather useless. :)
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.
-Joe
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