Bug 99299

Created attachment 128792 [details]
backtrace

Created attachment 128793 [details]
var_log_messages (as collected by Fedora's gnome-abrt)

Xorg version is X.Org X Server 1.19.0. I don't know how that maps to your higher numbered version scheme offered here on the bugtracker, so someone else feel free to enter the actual release that corresponds to.

Please attach the corresponding Xorg log file.

For some reason gnome-abrt didn't collect it, and while I did try to find it at the time of the crash, it's not in /var/log/Xorg.0.log as it used to be historically and I had pretty bad internet so I couldn't really google the new location. Therefore I don't have it right now. I can gather it the next time this crash happens if that helps.

Current releases of Fedora put the X log into the systemd journal instead of
/var/log/Xorg.0.log:
http://who-t.blogspot.com/2014/03/viewing-xorglog-with-journalctl.html
https://fedoraproject.org/wiki/How_to_debug_Xorg_problems

The backtrace suggests that glibc is aborting the server because it detected
an attempt to double free the same block of memory or similar memory corruption:

#3  0x00007efcf98a18ea in malloc_printerr (ar_ptr=<optimized out>, ptr=<optimized out>, str=0x7efcf99acda8 "double free or corruption (!prev)", action=3) at malloc.c:5046
        buf = "0000000002cc5ed0"
        cp = <optimized out>
        ar_ptr = <optimized out>
        str = 0x7efcf99acda8 "double free or corruption (!prev)"

Created attachment 128928 [details]
gdm-x-session log (should correspond to Xorg log)

It just crashed again. Attaching journalctl -b _COMM=gdm-x-session (which is supposedly the new Xorg log in Fedora) Crash happens around Jan 13 12:26:00 local time

Could be bug 99164.

If that helps anything, I set a custom keyboard combination ALT+D to open a new terminal (in the GNOME 3's gnome-control-center's keyboard shortcut settings).

The crash seems to preferably happen exactly when I press that keyboard combination - like every ~100th time. (I open a lot of new terminals during the day)

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