[Bug 242129] x11/lightdm-gtk-greeter: Crashes when run with daemon login class
bugzilla-noreply at freebsd.org
bugzilla-noreply at freebsd.org
Thu Nov 21 04:32:51 UTC 2019
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=242129
Bug ID: 242129
Summary: x11/lightdm-gtk-greeter: Crashes when run with daemon
login class
Product: Ports & Packages
Version: Latest
Hardware: Any
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: Individual Port(s)
Assignee: woodsb02 at freebsd.org
Reporter: darius at dons.net.au
Flags: maintainer-feedback?(woodsb02 at freebsd.org)
Assignee: woodsb02 at freebsd.org
I find lightdm-gtk-greeter segfaults when lightdm runs.
I did some digging and it gets run with a login class of daemon but if I change
that to root it runs fine(!)
I did this by adding
lightdm_login_class="root"
to the rc.d script.
Unfortunately it appears to not dump core which makes debugging a challenge..
If I run lightdm manually I get..
[maarsy-acq3 4:22] /usr/src> sudo limits -C daemon /usr/local/sbin/lightdm -d
[+0.00s] DEBUG: Logging to /var/log/lightdm/lightdm.log
[+0.00s] DEBUG: Starting Light Display Manager 1.30.0, UID=0 PID=26501
[+0.00s] DEBUG: Loading configuration dirs from
/usr/local/share/lightdm/lightdm.conf.d
[+0.00s] DEBUG: Loading configuration dirs from /etc/xdg/lightdm/lightdm.conf.d
[+0.00s] DEBUG: Loading configuration dirs from
/usr/local/etc/xdg/lightdm/lightdm.conf.d
[+0.00s] DEBUG: Loading configuration from /usr/local/etc/lightdm/lightdm.conf
[+0.00s] DEBUG: Registered seat module local
[+0.00s] DEBUG: Registered seat module xremote
[+0.00s] DEBUG: Using D-Bus name org.freedesktop.DisplayManager
[+0.00s] WARNING: Failed to get list of logind seats:
GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name
org.freedesktop.login1 was not provided by any .service files
[+0.00s] DEBUG: Adding default seat
[+0.00s] DEBUG: Seat seat0: Loading properties from config section Seat:*
[+0.00s] DEBUG: Seat seat0: Starting
[+0.00s] DEBUG: Seat seat0: Creating greeter session
[+0.00s] DEBUG: Seat seat0: Creating display server of type x
[+0.42s] DEBUG: Could not run plymouth --ping: Failed to execute child process
?plymouth? (No such file or directory)
[+0.42s] DEBUG: Using VT 9
[+0.42s] DEBUG: Seat seat0: Starting local X display on VT 9
[+0.42s] DEBUG: XServer 0: Logging to /var/log/lightdm/x-0.log
[+0.42s] DEBUG: XServer 0: Writing X server authority to
/var/run/lightdm/root/:0
[+0.42s] DEBUG: XServer 0: Launching X Server
[+0.42s] DEBUG: Launching process 26503: /usr/local/bin/X :0 -seat seat0 -auth
/var/run/lightdm/root/:0 -nolisten tcp vt9 -novtswitch
[+0.42s] DEBUG: XServer 0: Waiting for ready signal from X server :0
[+0.42s] DEBUG: Acquired bus name org.freedesktop.DisplayManager
[+0.42s] DEBUG: Registering seat with bus path
/org/freedesktop/DisplayManager/Seat0
[+0.42s] DEBUG: Loading users from org.freedesktop.Accounts
[+0.42s] DEBUG: User /org/freedesktop/Accounts/User19999 added
[+2.09s] DEBUG: Got signal 30 from process 26503
[+2.09s] DEBUG: XServer 0: Got signal from X server :0
[+2.09s] DEBUG: XServer 0: Connecting to XServer :0
[+2.51s] DEBUG: Seat seat0: Display server ready, starting session
authentication
[+2.51s] DEBUG: Session pid=26514: Started with service 'lightdm-greeter',
username 'lightdm'
[+2.51s] DEBUG: Session pid=26514: Authentication complete with return value 0:
Success
[+2.51s] DEBUG: Seat seat0: Session authenticated, running command
[+2.51s] DEBUG: Session pid=26514: Running command
/usr/local/sbin/lightdm-gtk-greeter
[+2.51s] DEBUG: Creating shared data directory /var/lib/lightdm-data/lightdm
[+2.51s] DEBUG: Session pid=26514: Logging to
/var/log/lightdm/seat0-greeter.log
[+2.93s] DEBUG: Activating ConsoleKit session
maarsy-acq3.gsoft.com.au-1574310147.624690-886096234
[+3.57s] DEBUG: Greeter closed communication channel
[+3.58s] DEBUG: Session pid=26514: Exited with return value 1
[+3.58s] DEBUG: Seat seat0: Session stopped
[+3.58s] DEBUG: Seat seat0: Stopping; failed to start a greeter
[+3.58s] DEBUG: Seat seat0: Stopping
[+3.58s] DEBUG: Seat seat0: Stopping display server
[+3.58s] DEBUG: Sending signal 15 to process 26503
[+3.72s] DEBUG: Process 26503 exited with return value 0
[+3.72s] DEBUG: XServer 0: X server stopped
[+3.72s] DEBUG: Releasing VT 9
[+3.72s] DEBUG: XServer 0: Removing X server authority /var/run/lightdm/root/:0
[+3.72s] DEBUG: Seat seat0: Display server stopped
[+3.72s] DEBUG: Seat seat0: Stopped
[+3.72s] DEBUG: Required seat has stopped
[+3.72s] DEBUG: Stopping display manager
[+3.72s] DEBUG: Display manager stopped
[+3.72s] DEBUG: Stopping daemon
[+3.72s] DEBUG: Exiting with return value 1
ktrace -di on it produced a 1.7GB file though..
I found this nugget in it:
26561 Xorg RET munmap 0
26561 Xorg CALL openat(AT_FDCWD,0x80096d243,0x100002<O_RDWR|O_CLOEXEC>)
26561 Xorg NAMI "/dev/mem"
26561 Xorg RET openat 3
26561 Xorg CALL ioctl(0x3,MEMRANGE_SET,0x7fffffffeab0)
26561 Xorg RET ioctl -1 errno 2 No such file or directory
I have attached the result of..
kdump -s | bzip2 > kdump.txt.bz2
which is only 11MB.
as well as..
26563 lightdm CALL fcntl(0xa5163,F_SETFD,FD_CLOEXEC)
26563 lightdm RET fcntl -1 errno 9 Bad file descriptor
26563 lightdm CALL fcntl(0xa5164,F_SETFD,FD_CLOEXEC)
26563 lightdm RET fcntl -1 errno 9 Bad file descriptor
26563 lightdm CALL fcntl(0xa5165,F_SETFD,FD_CLOEXEC)
26563 lightdm RET fcntl -1 errno 9 Bad file descriptor
26563 lightdm CALL fcntl(0xa5166,F_SETFD,FD_CLOEXEC)
26563 lightdm RET fcntl -1 errno 9 Bad file descriptor
(Probably not related to this but still)
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