Bug 1145144

Summary:	gnome-settings-daemon killed by SIGSEGV
Product:	Red Hat Enterprise Linux 7	Reporter:	jigar <jraising>
Component:	gnome-settings-daemon	Assignee:	Rui Matos <rmatos>
Status:	CLOSED ERRATA	QA Contact:	Desktop QE <desktop-qa-list>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	7.0	CC:	benl, jraising, mboisver, mclasen, tpelka
Target Milestone:	rc
Target Release:	7.0
Hardware:	x86_64
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2015-03-05 10:59:21 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description jigar 2014-09-22 13:23:50 UTC

Description of problem: gnome-settings-daemon killed by SIGSEGV . Also the customer is not able to log into root using su via GUI or CLI because it segfaults.


Version-Release number of selected component : gnome-settings-daemon-3.8.6.1-9.el7_0.1


How reproducible: Always


Steps to Reproduce:
1. Try logging into root via su
2. ABRT case is generated due to Segmentation Fault.


Actual results: gnome-settings-daemon crashes and switching to su segfaults


Expected results: gnome-settings daemon should not crash and switching to root should not segfault.


Additional info: I used the rescue disk to create another user with the UID/GID, and I can su to that user just fine. I can also su between users, and to/from the new user.

Comment 1 jigar 2014-09-22 13:25:45 UTC

Below is the backtrace for reference for the above crash.

Core was generated by `/usr/libexec/gnome-settings-daemon'.
Program terminated with signal 11, Segmentation fault.

#0  g_cancellable_cancel (cancellable=0x726f2f0073754244) at gcancellable.c:485
485           cancellable->priv->cancelled)
(gdb) bt
#0  g_cancellable_cancel (cancellable=0x726f2f0073754244) at gcancellable.c:485
#1  0x00007f6b3014d650 in vino_vanished_cb (connection=<optimized out>, name=<optimized out>, manager=0x1946500) at gsd-remote-display-manager.c:141
#2  0x00007f6b5995daf3 in do_call (client=client@entry=0x19de990, call_type=call_type@entry=CALL_TYPE_NAME_VANISHED) at gdbusnamewatching.c:216
#3  0x00007f6b5995dd25 in call_vanished_handler (client=client@entry=0x19de990, ignore_cancelled=0) at gdbusnamewatching.c:242
#4  0x00007f6b5995e008 in on_name_owner_changed (connection=<optimized out>, sender_name=0x7f6b3c10cb80 "org.freedesktop.DBus", object_path=<optimized out>, 
    interface_name=0x7f6b3c10e160 "org.freedesktop.DBus", signal_name=<optimized out>, parameters=0x7f6b3c05d430, user_data=0x19de990) at gdbusnamewatching.c:307
#5  0x00007f6b5994f1b5 in emit_signal_instance_in_idle_cb (data=0x7f6b3c00bdf0) at gdbusconnection.c:3715
#6  0x00007f6b587c2ac6 in g_main_dispatch (context=0x18e7540) at gmain.c:3058
#7  g_main_context_dispatch (context=context@entry=0x18e7540) at gmain.c:3634
#8  0x00007f6b587c2e48 in g_main_context_iterate (context=0x18e7540, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3705
#9  0x00007f6b587c325a in g_main_loop_run (loop=0x191d940) at gmain.c:3899
#10 0x00007f6b5a2310ed in gtk_main () at gtkmain.c:1156
#11 0x0000000000403847 in main (argc=1, argv=0x7fff93b59ad8) at main.c:479

Comment 3 Bastien Nocera 2014-09-25 10:19:03 UTC

Fixed upstream (in GNOME 3.8, 3.10, 3.12 and 3.14)

commit 272fae4221bc375fefb43810179aaff85b45b3ac
Author: Bastien Nocera <hadess>
Date:   Thu Sep 25 12:14:42 2014 +0200

    remote-display: Initialise ->cancellable
    
    At least once, right?
    
    https://bugzilla.redhat.com/show_bug.cgi?id=1145144

commit 9765a98a1063ef9bfc0a7cfee566e534384c601c
Author: Bastien Nocera <hadess>
Date:   Thu Sep 25 12:12:47 2014 +0200

    remote-display: Stop plugin when exiting
    
    Make sure that the plugin is stopped when it's disposed of.
    
    https://bugzilla.redhat.com/show_bug.cgi?id=1145144

commit ede9c19215951d6161a8d5a018149be6637662b6
Author: Bastien Nocera <hadess>
Date:   Thu Sep 25 12:11:43 2014 +0200

    remote-display: Stop watching the D-Bus name on stop
    
    So that we don't get called out when the plugin is stopped.
    
    https://bugzilla.redhat.com/show_bug.cgi?id=1145144

Comment 5 Michael Boisvert 2015-01-14 16:44:30 UTC

Tested in gnome-settings-daemon-3.8.6.1-12.el7, no segfaults when logging into root via su. Verified.

Comment 7 errata-xmlrpc 2015-03-05 10:59:21 UTC

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHBA-2015-0481.html