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Bug 359831 - [patch] gdm crashes when home directory is not world-executable
[patch] gdm crashes when home directory is not world-executable
Status: RESOLVED FIXED
Product: gdm
Classification: Core
Component: general
2.14.x
Other All
: Normal critical
: ---
Assigned To: GDM maintainers
GDM maintainers
Depends on:
Blocks:
 
 
Reported: 2006-10-05 09:21 UTC by Amnon Aaronsohn
Modified: 2006-10-06 00:56 UTC
See Also:
GNOME target: ---
GNOME version: ---

Attachments
patch to fix the problem (466 bytes, patch)
2006-10-05 09:28 UTC, Amnon Aaronsohn 		none Details | Review

Description Amnon Aaronsohn 2006-10-05 09:21:35 UTC 
Please describe the problem:
In our setup the home directories are on NFS with root squashing. When a user whose home directory is not world-executable tries to login, gdm sometimes crashes with a segfault.

Steps to reproduce:
1. chmod o-x ~
2. Try to login


Actual results:
About 1 in 2 times, gdm crashes, the user's xsession isn't started and the login screen is re-displayed. The log says the daemon received signal 11.

Expected results:


Does this happen every time?


Other information:
This doesn't happen with the default configuration (I think setting NeverPlaceCookiesOnNFS=false triggers the bug).

The program crashes in gdm_auth_user_add() due to a reference to a freed pointer. The attached patch fixes the problem.
Comment 1 Amnon Aaronsohn 2006-10-05 09:28:11 UTC 
Created attachment 74037 [details] [review]
patch to fix the problem
Comment 2 Brian Cameron 2006-10-06 00:56:58 UTC 
Thanks, good catch.  Fixed in 2.14, 2.16 and CVS head branches.