In "Fedora LXDE" dragging any window overtop of "Counter-Strike: Global Offensive" while it is in fullscreen causes openbox to segfault Reproducible: Always Steps to Reproduce: 1.Install "Fedora LXDE" From Fedora spins. 2.Install steam from rpmfusion & install cs:go from steam. 3.Open cs:go and fullscreen it. 4. Drag any window from the secondary display to the display the game is fullscreened on with quite a bit of speed. 5. Openbox segfaults and the window title bars go away. 6. cry. Actual Results: Window title-bars flash then disappear and you are no longer able to change which window is selected. Expected Results: Render the window overtop of the game like it did in F37.
Thanks for the reproducer. This might be a duplicate of bug #2178299.
Created attachment 1960415 [details] Patch seemingly fixing the crash Analyzed this. Reproducing it is even simpler for me: * Open a Google Chrome window in fullscreen * ctrl+n There are reports for this: https://retrace.fedoraproject.org/faf/reports/648708/ addr2line -e /lib64/libobt.so.2 0x7df9 /usr/src/debug/openbox-3.6.1-21.fc38.x86_64/obt/signal.c:281 addr2line -e /usr/bin/openbox 0x1e7d3 /usr/src/debug/openbox-3.6.1-21.fc38.x86_64/openbox/client.c:2726 addr2line -e /usr/bin/openbox 0x31062 /usr/src/debug/openbox-3.6.1-21.fc38.x86_64/openbox/event.c:583 /var/log/messages (see signal.c:281) 34278:Apr 20 13:03:27 geras /usr/libexec/gdm-x-session[26132]: How are you gentlemen? All your base are belong to us. (Openbox received signal 11) client.c:2726 /* now recalc any windows in the fullscreen layer which have not had their layer recalced already */ for (; it; it = g_list_next(it)) { if (window_layer(it->data) < OB_STACKING_LAYER_FULLSCREEN) break; else if (WINDOW_IS_CLIENT(it->data) && !WINDOW_AS_CLIENT(it->data)->visited) client_calc_layer_internal(x->data); The iteration over GList *stacking_list at fault here, or rather the call to client_calc_layer_internal() which affects the stacking_list. I guess the glist cannot be touched while iterating. I created a patch for me, it works, however as I have no idea what the code is even supposed to do, it might fail somehow somewhere later. But hey, at least my desktop doesn't crash anymore.
*** This bug has been marked as a duplicate of bug 2178299 ***