Bug 445613

Summary:	pam_mkhomedir error in pam_vprompt
Product:	[Fedora] Fedora	Reporter:	Christopher Hailey <christopher.e.hailey>
Component:	gdm	Assignee:	jmccann
Status:	CLOSED CURRENTRELEASE	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	low	Docs Contact:
Priority:	low
Version:	9	CC:	cschalle, rstrode, tmraz
Target Milestone:	---
Target Release:	---
Hardware:	i386
OS:	Linux
Whiteboard:
Fixed In Version:	2.22.0-5.fc9	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2008-05-21 11:08:34 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Christopher Hailey 2008-05-07 23:28:41 UTC

Description of problem:

pam_mkhomedir fails in pam_vprompt when invoked from a gdm login

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


How reproducible:

From authconfig enable "create home directory" log onto an account without a
home directory - gdm will freeze with empty desktop - errors in
/var/log/messages reveal problem (below)

Additional info:

May  7 17:22:43 vmf9 gconfd (gdm-2893): Exiting
May  7 17:22:43 vmf9 gdm[2922]: ******************* START **********************
************
May  7 17:22:43 vmf9 gdm[2922]: (no debugging symbols found)
May  7 17:22:43 vmf9 gdm[2922]: 0x00110416 in __kernel_vsyscall ()
May  7 17:22:43 vmf9 gdm[2922]: #0  0x00110416 in __kernel_vsyscall ()
May  7 17:22:43 vmf9 gdm[2922]: #1  0x003e17bb in fork () from /lib/libc.so.6
May  7 17:22:43 vmf9 gdm[2922]: #2  0x080510c5 in ?? ()
May  7 17:22:43 vmf9 gdm[2922]: #3  0x080511d4 in ?? ()
May  7 17:22:43 vmf9 gdm[2922]: #4  <signal handler called>
May  7 17:22:43 vmf9 gdm[2922]: #5  0x00110416 in __kernel_vsyscall ()
May  7 17:22:43 vmf9 gdm[2922]: #6  0x00371660 in raise () from /lib/libc.so.6
May  7 17:22:43 vmf9 gdm[2922]: #7  0x00373028 in abort () from /lib/libc.so.6
May  7 17:22:43 vmf9 gdm[2922]: #8  0x00591029 in g_assertion_message () from /l
ib/libglib-2.0.so.0
May  7 17:22:43 vmf9 gdm[2922]: #9  0x005914bd in g_assertion_message_expr () fr
om /lib/libglib-2.0.so.0
May  7 17:22:43 vmf9 gdm[2922]: #10 0x0804cd7c in g_str_equal ()
May  7 17:22:43 vmf9 gdm[2922]: #11 0x0804d369 in g_str_equal ()
May  7 17:22:43 vmf9 gdm[2922]: #12 0x0804d789 in g_str_equal ()
May  7 17:22:43 vmf9 gdm[2922]: #13 0x064bb9ea in pam_vprompt (pamh=0x94f5278, s
tyle=4, response=0x0, 
May  7 17:22:43 vmf9 gdm[2922]:     fmt=0x119644 "Creating directory '%s'.", arg
s=0xbf87f280 " EP\t")
May  7 17:22:43 vmf9 gdm[2922]:     at pam_vprompt.c:83
May  7 17:22:43 vmf9 gdm[2922]: #14 0x064bbb89 in pam_prompt (pamh=0x94f5278, st
yle=4, response=0x0, 
May  7 17:22:43 vmf9 gdm[2922]:     fmt=0x119644 "Creating directory '%s'.") at 
pam_vprompt.c:111
May  7 17:22:43 vmf9 gdm[2922]: #15 0x00118dac in create_homedir (pamh=0x94f5278
, ctrl=<value optimized out>, 
May  7 17:22:43 vmf9 gdm[2922]:     pwd=0x95044f8, source=0x11aa80 "/etc/skel", 
dest=0x9504520 "/home/nguy")
May  7 17:22:43 vmf9 gdm[2922]:     at pam_mkhomedir.c:142
May  7 17:22:43 vmf9 gdm[2922]: #16 0x001194db in pam_sm_open_session (pamh=0x94
f5278, 
May  7 17:22:43 vmf9 gdm[2922]:     flags=<value optimized out>, argc=0, argv=0x
0) at pam_mkhomedir.c:486

Comment 1 Tomas Mraz 2008-05-12 13:07:41 UTC

Can you try logging in from the text console, whether pam_mkhomedir works OK there?

Comment 2 Christopher Hailey 2008-05-12 15:50:22 UTC

Text logins work e.g. ssh, login, su only gdm fails

Comment 3 Tomas Mraz 2008-05-12 16:20:29 UTC

I suppose that there must be something wrong with the PAM conversation function
in gdm then.

Comment 4 Matthias Clasen 2008-05-12 17:23:47 UTC

It seems that in this situation,

gdm-session-worker.c:attempt_to_load_user_settings_as_root

gets called late, at a time when getegid() already returns the users gid, and
then we run into the assertion.

Comment 5 Ray Strode [halfline] 2008-05-12 17:54:13 UTC

this should be square in gdm-2.22.0-5.fc9

Comment 6 Matthias Clasen 2008-05-12 21:37:44 UTC

updated the F9 update to -5

Comment 7 Fedora Update System 2008-05-13 15:27:32 UTC

gdm-2.22.0-5.fc9 has been pushed to the Fedora 9 testing repository.  If problems still persist, please make note of it in this bug report.
 If you want to test the update, you can install it with 
 su -c 'yum --enablerepo=updates-testing update gdm'.  You can provide feedback for this update here: http://admin.fedoraproject.org/updates/F9/FEDORA-2008-3761

Comment 8 Bug Zapper 2008-05-14 10:48:22 UTC

Changing version to '9' as part of upcoming Fedora 9 GA.
More information and reason for this action is here:
http://fedoraproject.org/wiki/BugZappers/HouseKeeping

Comment 9 Christopher Hailey 2008-05-14 21:39:26 UTC

I was able to install gdm-2.22.0-5.fc9 and verified that this fix works

Comment 10 Fedora Update System 2008-05-21 11:08:27 UTC

gdm-2.22.0-5.fc9 has been pushed to the Fedora 9 stable repository.  If problems still persist, please make note of it in this bug report.