Bug 134941 - gdm fails to reset console user if Xserver is killed with Ctrl-Alt-Backspace
gdm fails to reset console user if Xserver is killed with Ctrl-Alt-Backspace
Product: Fedora
Classification: Fedora
Component: pam (Show other bugs)
All Linux
medium Severity medium
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Assigned To: Tomas Mraz
Mike McLean
: 86481 (view as bug list)
Depends On:
Blocks: FC3Blocker
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Reported: 2004-10-07 09:32 EDT by Thomas Woerner
Modified: 2007-11-30 17:10 EST (History)
3 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2004-10-20 14:20:34 EDT
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RHEL 7.3 requirements from Atomic Host:
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Attachments (Terms of Use)
Don't check existance of TTY when dropping console perms (2.81 KB, patch)
2004-10-20 05:24 EDT, Ray Strode [halfline]
no flags Details | Diff

  None (edit)
Description Thomas Woerner 2004-10-07 09:32:21 EDT
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; rv:1.7.3) Gecko/20041001

Description of problem:
gdm should set console user back to root if Xserver gets killed.

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:
1. Go to runlevel 5
2. Log in as user1
3. Kill Xserver with Ctrl-Alt-Backspace
5. Login as an user2: Files from /etc/security/console.perms still
belong to user1

Actual Results:  No reset of file permissions.

Expected Results:  Reset of file permissions.

Additional info:
This also happens on RHEL3 etc.
Comment 1 Ray Strode [halfline] 2004-10-20 05:20:52 EDT
Hi so this actually looks like it may be a problem with pam_console.so and not
GDM.  Basically pam_console checks to make sure the display socket is around
before unref'n console priveleges.  Of course, if the user ctrl-alt-backspaces
then the display socket will be wiped.
Comment 2 Ray Strode [halfline] 2004-10-20 05:24:37 EDT
Created attachment 105500 [details]
Don't check existance of TTY when dropping console perms

Here's a patch that inhibits the checks when dropping console perms.  It needs
to be reviewed by someone who knows pam better than me.
Comment 3 Tomas Mraz 2004-10-20 08:16:08 EDT
I think the patch should be harmless however I'll modify it to skip
the check only on X logins not console logins.

Comment 4 Ray Strode [halfline] 2004-10-20 14:20:34 EDT
patch in rawhide seems to work fine, closing...
Comment 5 Ray Strode [halfline] 2004-11-04 22:03:36 EST
*** Bug 86481 has been marked as a duplicate of this bug. ***

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