Red Hat Bugzilla – Bug 597408
X session crashes when virt-manager's "Open" button is clicked.
Last modified: 2018-04-11 07:59:41 EDT
Description of problem:
X crashes when "Open" button of a already running virtual machine is clicked (It sometimes also crashes when "New" is clicked). X crashes too if a remote X session is forwarded via SSH.
Version-Release number of selected component (if applicable):
Always on my machine.
Steps to Reproduce:
1. Open virt-manager
2. Make sure you have a virtual machine created and running
3. Hit the "Open" button.
Gnome session crashes and GDM login screen is presented.
The running virtual machine window should open.
reason: Process /usr/bin/Xorg was killed by signal 6 (SIGABRT)
commanline: /usr/bin/Xorg :0 -nr -verbose -auth /var/run/gdm/auth-for-gdm-y3gBa3/database -nolisten tcp vt1
I have a core dump file available, but it's 45M (too large to attach). If it is of interest I can provide it.
Thanks for the bug report. We have reviewed the information you have provided above, and there is some additional information we require that will be helpful in our diagnosis of this issue.
First of all, could we get output of the command
rpm -qa \*xulrun\* \*firefox\* \*mozilla\* \*flash\* \*plugin\*
Please also install firefox-debuginfo (debuginfo-install is from
Then run firefox with a parameter -g. That will start firefox running inside of gdb debugger. Then use command run and do whatever you did to make firefox crash. When it happens, you should go back to the gdb and run
(gdb) thread apply all backtrace
This produces usually many screens of the text. Copy all of them into a text editor and attach the file to the bug as an uncompressed attachment.
Please, install also valgrind (from valgrind package) and run
valgrind --trace-children=yes --log-file=/tmp/firefox-valgrind-log.txt /usr/bin/firefox
(that's one line command, browser breaking this line into two notwithstanding)
Please, attach the file /tmp/firefox-valgrind-log.txt to this bug as an attachment as well.
We will review this issue again once you've had a chance to attach this information.
Thanks in advance.
(In reply to comment #1)
> I have a core dump file available, but it's 45M (too large to attach). If it is
> of interest I can provide it.
Sorry, silly me, the comment 2 is a standard boilerplate for firefox/thunderbird, but it should be useful for your situation as well. Install debuginfos, and then run
and then follow the other steps in comment 2
Created attachment 418304 [details]
output of gdb -core=coredump of abrt's coredump file
I installed debuginfos and let X crash again. Output of "thread apply all backtrace" is attached. I'm not sure if you also need the valgrind stuff. In that case I'd need to start X manually and run valgrind on it. Let me know if it is required.
(In reply to comment #4)
> Created an attachment (id=418304) [details]
> output of gdb -core=coredump of abrt's coredump file
> I installed debuginfos and let X crash again. Output of "thread apply all
> backtrace" is attached. I'm not sure if you also need the valgrind stuff. In
> that case I'd need to start X manually and run valgrind on it. Let me know if
> it is required.
No, I don't need valgrind logs (I am not sure whether Xorg would actually even run under valgrind).
Thanks a lot
Fortunately, I have found a workaround. Once I removed the "xorg-x11-drv-nouveau" package, rebooted and tried to use virt-manager as described above, Xorg does not crash any more. I was able to confirm this by installing the package again, rebooted my machine and followed the procedure above, which crashed my X session as described in the initial bug report.
I'm not sure why "xorg-x11-drv-nouveau" causes those problems, but it seems to be the culprit for me.
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