[redhat-lspp] Unable to ssh in after certain system usage

[Michael C Thompson]

redhat-lspp-bounces at redhat.com wrote on 03/09/2006 02:28:40 PM:

> 
> Hey all, 
> 
> The subject is rather vague, but so is my understanding of the 
> problem. I've been playing around with various MLS policy 
> "features", and I have been using setenforce 0/1 very often to 
> resolve/investigate some of these, however, I have encountered an 
> issue with ssh after doing this, and what happens is that I have 
> existing ssh sessions open, but I am unable to open new sessions. 
> This is not an issue that I can tell with booting into enforcing 
> mode (or the inital set to enforcing), I boot into permissive then 
> setenforce 1. I've done this and then logged in successfully through
> ssh. In order to create this bug, I have just done the following: 
> 
> Boot system with LSPP.10 kernel (not updated yet, but I will shortly
> and reply to see if this is still an issue). 
> Have /etc/selinux/config set to be Permissive mode be default. 
> ssh in as root, newrole -r secadm_r -l SystemHigh 
> ssh in as root, do nothing 
> ssh in as root and get this error: 
> login as: root 
> root at 9.41.41.107's password: 
> Server refused to allocate pty 
> -bash: /root/.bash_profile: Permission denied 
> 
> Any idea where I should start? 

Looking in /var/log/messages, I get the following dump when I exit from an 
ssh session:
idr_remove called for id=0 which is not allocated.
 [<c01c4677>] idr_remove+0xd4/0x137
 [<c0209fe4>] release_dev+0x632/0x649     [<c02e0f94>] 
_spin_lock_irqsave+0x9/0xd
 [<c0116b00>] __wake_up+0x2a/0x3d     [<c0206e18>] 
tty_ldisc_deref+0x50/0x5f
 [<c0176cea>] inotify_dentry_parent_queue_event+0x2b/0x90     [<c020a002>] 
tty_release+0x7/0xa
 [<c0156664>] __fput+0xb1/0x14e     [<c0154137>] filp_close+0x4e/0x54
 [<c0102bc1>] syscall_call+0x7/0xb    Mar  9 07:30:40 dyn94141107 kernel: 
[<c0102c52>] work_notifysig+0x13/0x19    idr_remove called for id=0 which 
is not allocated.
Mar  9 07:30:40 dyn94141107 kernel:  [<c01c4677>] idr_remove+0xd4/0x137
Mar  9 07:30:40 dyn94141107 kernel:  [<c0209fe4>] release_dev+0x632/0x649  
  [<c02e0f94>] _spin_lock_irqsave+0x9/0xd
Mar  9 07:30:40 dyn94141107 kernel:  [<c0116b00>] __wake_up+0x2a/0x3d 
[<c0206e18>] tty_ldisc_deref+0x50/0x5f
Mar  9 07:30:40 dyn94141107 kernel:  [<c0176cea>] 
inotify_dentry_parent_queue_event+0x2b/0x90     [<c020a002>] 
tty_release+0x7/0xa
Mar  9 07:30:40 dyn94141107 kernel:  [<c0156664>] __fput+0xb1/0x14e 
[<c0154137>] filp_close+0x4e/0x54

This happens every time I end an ssh session.

> Mike--
> redhat-lspp mailing list
> redhat-lspp at redhat.com
> https://www.redhat.com/mailman/listinfo/redhat-lspp
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