Hint: You are currently not seeing messages from other users and the system. Users in the 'systemd-journal' group can see all messages. Pass -q to turn off this notice. GNU gdb (GDB; openSUSE Leap 15.0) 8.2 Copyright (C) 2018 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-suse-linux". Type "show configuration" for configuration details. For bug reporting instructions, please see: . Find the GDB manual and other documentation resources online at: . For help, type "help". Type "apropos word" to search for commands related to "word"... Reading symbols from /usr/bin/xfwm4...Reading symbols from /usr/lib/debug/usr/bin/xfwm4-20190513T201228.3ff53a9f-75.x86_64.debug...done. done. [New LWP 23093] [New LWP 23095] [New LWP 23094] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib64/libthread_db.so.1". Core was generated by `xfwm4 --replace'. Program terminated with signal SIGSEGV, Segmentation fault. #0 myDisplayGetDefaultScreen (display=display@entry=0x55e43b91a0e0) at display.c:755 755 return (ScreenInfo *) list->data; [Current thread is 1 (Thread 0x7f8a77a3af00 (LWP 23093))] (gdb) bt full #0 0x000055e439179f71 in myDisplayGetDefaultScreen (display=display@entry=0x55e43b91a0e0) at display.c:755 list = Python Exception Cannot access memory at address 0x64515a5300000033: #1 0x000055e439185468 in getXServerTime (display_info=0x55e43b91a0e0) at hints.c:1325 screen_info = xevent = {type = 991402992, xany = {type = 991402992, serial = 140232626944052, send_event = 993673792, display = 0x7f8a73ea4576 <_XReply+918>, window = 140726308346528}, xkey = {type = 991402992, serial = 140232626944052, send_event = 993673792, display = 0x7f8a73ea4576 <_XReply+918>, window = 140726308346528, root = 4294967296, subwindow = 0, time = 7522006006590952960, x = 0, y = 0, x_root = 991402992, y_root = 21988, state = 0, keycode = 0, same_screen = 136187593}, xbutton = {type = 991402992, serial = 140232626944052, send_event = 993673792, display = 0x7f8a73ea4576 <_XReply+918>, window = 140726308346528, root = 4294967296, subwindow = 0, time = 7522006006590952960, x = 0, y = 0, x_root = 991402992, y_root = 21988, state = 0, button = 0, same_screen = 136187593}, xmotion = {type = 991402992, serial = 140232626944052, send_event = 993673792, display = 0x7f8a73ea4576 <_XReply+918>, window = 140726308346528, root = 4294967296, subwindow = 0, time = 7522006006590952960, x = 0, y = 0, x_root = 991402992, y_root = 21988, state = 0, is_hint = 0 '\000', same_screen = 136187593}, xcrossing = {type = 991402992, serial = 140232626944052, send_event = 993673792, display = 0x7f8a73ea4576 <_XReply+918>, window = 140726308346528, root = 4294967296, subwindow = 0, time = 7522006006590952960, x = 0, y = 0, x_root = 991402992, y_root = 21988, mode = 0, detail = 0, same_screen = 136187593, focus = 0, state = 2}, xfocus = {type = 991402992, serial = 140232626944052, send_event = 993673792, display = 0x7f8a73ea4576 <_XReply+918>, window = 140726308346528, mode = 0, detail = 1}, xexpose = {type = 991402992, serial = 140232626944052, send_event = 993673792, display = 0x7f8a73ea4576 <_XReply+918>, window = 140726308346528, x = 0, y = 1, width = 0, height = 0, count = 355816960}, xgraphicsexpose = {type = 991402992, serial = 140232626944052, send_event = 993673792, display = 0x7f8a73ea4576 <_XReply+918>, drawable = 140726308346528, x = 0, y = 1, width = 0, height = 0, count = 355816960, major_code = 1751353500, minor_code = 0}, xnoexpose = {type = 991402992, serial = 140232626944052, send_event = 993673792, display = 0x7f8a73ea4576 <_XReply+918>, drawable = 140726308346528, major_code = 0, minor_code = 1}, xvisibility = {type = 991402992, serial = 140232626944052, send_event = 993673792, display = 0x7f8a73ea4576 <_XReply+918>, window = 140726308346528, state = 0}, xcreatewindow = {type = 991402992, serial = 140232626944052, send_event = 993673792, display = 0x7f8a73ea4576 <_XReply+918>, parent = 140726308346528, window = 4294967296, x = 0, y = 0, width = 355816960, height = 1751353500, border_width = 0, override_redirect = 0}, xdestroywindow = {type = 991402992, serial = 140232626944052, send_event = 993673792, display = 0x7f8a73ea4576 <_XReply+918>, event = 140726308346528, window = 4294967296}, xunmap = {type = 991402992, serial = 140232626944052, send_event = 993673792, display = 0x7f8a73ea4576 <_XReply+918>, event = 140726308346528, window = 4294967296, from_configure = 0}, xmap = {type = 991402992, serial = 140232626944052, send_event = 993673792, display = 0x7f8a73ea4576 <_XReply+918>, event = 140726308346528, window = 4294967296, override_redirect = 0}, xmaprequest = {type = 991402992, serial = 140232626944052, send_event = 993673792, display = 0x7f8a73ea4576 <_XReply+918>, parent = 140726308346528, window = 4294967296}, xreparent = {type = 991402992, serial = 140232626944052, send_event = 993673792, display = 0x7f8a73ea4576 <_XReply+918>, event = 140726308346528, window = 4294967296, parent = 0, x = 355816960, y = 1751353500, override_redirect = 0}, xconfigure = {type = 991402992, serial = 140232626944052, send_event = 993673792, display = 0x7f8a73ea4576 <_XReply+918>, event = 140726308346528, window = 4294967296, x = 0, y = 0, width = 355816960, height = 1751353500, border_width = 0, above = 94438732307440, override_redirect = 0}, xgravity = {type = 991402992, serial = 140232626944052, send_event = 993673792, display = 0x7f8a73ea4576 <_XReply+918>, event = 140726308346528, window = 4294967296, x = 0, y = 0}, xresizerequest = {type = 991402992, serial = 140232626944052, send_event = 993673792, display = 0x7f8a73ea4576 <_XReply+918>, window = 140726308346528, width = 0, height = 1}, xconfigurerequest = {type = 991402992, serial = 140232626944052, send_event = 993673792, display = 0x7f8a73ea4576 <_XReply+918>, parent = 140726308346528, window = 4294967296, x = 0, y = 0, width = 355816960, height = 1751353500, border_width = 0, above = 94438732307440, detail = 0, value_mask = 136187593}, xcirculate = {type = 991402992, serial = 140232626944052, send_event = 993673792, display = 0x7f8a73ea4576 <_XReply+918>, event = 140726308346528, window = 4294967296, place = 0}, xcirculaterequest = {type = 991402992, serial = 140232626944052, send_event = 993673792, display = 0x7f8a73ea4576 <_XReply+918>, parent = 140726308346528, window = 4294967296, place = 0}, xproperty = {type = 991402992, serial = 140232626944052, send_event = 993673792, display = 0x7f8a73ea4576 <_XReply+918>, window = 140726308346528, atom = 4294967296, time = 0, state = 355816960}, xselectionclear = {type = 991402992, serial = 140232626944052, send_event = 993673792, display = 0x7f8a73ea4576 <_XReply+918>, window = 140726308346528, selection = 4294967296, time = 0}, xselectionrequest = {type = 991402992, serial = 140232626944052, send_event = 993673792, display = 0x7f8a73ea4576 <_XReply+918>, owner = 140726308346528, requestor = 4294967296, selection = 0, target = 7522006006590952960, property = 0, time = 94438732307440}, xselection = {type = 991402992, serial = 140232626944052, send_event = 993673792, display = 0x7f8a73ea4576 <_XReply+918>, requestor = 140726308346528, selection = 4294967296, target = 0, property = 7522006006590952960, time = 0}, xcolormap = {type = 991402992, serial = 140232626944052, send_event = 993673792, display = 0x7f8a73ea4576 <_XReply+918>, window = 140726308346528, colormap = 4294967296, new = 0, state = 0}, xclient = {type = 991402992, serial = 140232626944052, send_event = 993673792, display = 0x7f8a73ea4576 <_XReply+918>, window = 140726308346528, message_type = 4294967296, format = 0, data = {b = "\000V5\025\234\210ch\000\000\000\000\000\000\000\000\360\233\027;", s = {22016, 5429, -30564, 26723, 0, 0, 0, 0, -25616, 15127}, l = {7522006006590952960, 0, 94438732307440, 0, 136187593}}}, xmapping = {type = 991402992, serial = 140232626944052, send_event = 993673792, display = 0x7f8a73ea4576 <_XReply+918>, window = 140726308346528, request = 0, first_keycode = 1, count = 0}, xerror = {type = 991402992, display = 0x7f8a73ea3834 <_XFreeReplyData+20>, resourceid = 94438734578240, serial = 140232626947446, error_code = 160 '\240', request_code = 154 '\232', minor_code = 158 '\236'}, xkeymap = {type = 991402992, serial = 140232626944052, send_event = 993673792, display = 0x7f8a73ea4576 <_XReply+918>, window = 140726308346528, key_vector = "\000\000\000\000\001", '\000' , "V5\025\234\210ch\000\000\000\000\000\000\000"}, xgeneric = {type = 991402992, serial = 140232626944052, send_event = 993673792, display = 0x7f8a73ea4576 <_XReply+918>, extension = 1704893088, evtype = 32765}, xcookie = {type = 991402992, serial = 140232626944052, send_event = 993673792, display = 0x7f8a73ea4576 <_XReply+918>, extension = 1704893088, evtype = 32765, cookie = 0, data = 0x0}, pad = {94438732307440, 140232626944052, 94438734578240, 140232626947446, 140726308346528, 4294967296, 0, 7522006006590952960, 0, 94438732307440, 0, 136187593, 2, 94438743147136, 94438743147156, 140232626929085, 2644443649, 50331652, 0, 0, 94438740627744, 7522006006590952960, 94438732307440, 140232654999449}} event = timestamp = 0 __func__ = "getXServerTime" #2 0x000055e43917a0c5 in myDisplayGetTime (display=display@entry=0x55e43b91a0e0, timestamp=) at display.c:853 display_timestamp = #3 0x000055e43916c7a5 in clientClose (c=0x55e43bbd0280) at client.c:2653 screen_info = 0x55e43b36c970 display_info = 0x55e43b91a0e0 timestamp = #4 0x000055e43916f307 in clientButtonPress (c=c@entry=0x55e43bbd0280, w=w@entry=66241163, event=event@entry=0x55e43b86a1a0) at client.c:3929 screen_info = display_info = 0x55e43b46d5c0 passdata = {b = 5, c = 0x55e43bbd0280} b = 5 g1 = __func__ = "clientButtonPress" #5 0x000055e43917d2e8 in handleButtonPress (event=0x55e43b86a1a0, display_info=0x55e43b46d5c0) at events.c:974 screen_info = 0x55e43b46fd90 c = 0x55e43bbd0280 state = 0 win = 66241163 replay = 0 status = EVENT_FILTER_STOP display_info = 0x55e43b46d5c0 #6 0x000055e43917d2e8 in handleEvent (event=, display_info=0x55e43b46d5c0) at events.c:2233 status = EVENT_FILTER_STOP display_info = 0x55e43b46d5c0 #7 0x000055e43917d2e8 in xfwm4_event_filter (event=0x55e43b86a1a0, data=0x55e43b46d5c0) at events.c:2344 display_info = 0x55e43b46d5c0 #8 0x000055e43917a799 in eventXfwmFilter (gdk_xevent=, gevent=, data=) at event_filter.c:177 filterelt_next = 0x55e43b47c340 event = 0x55e43b86a1a0 loop = EVENT_FILTER_REMOVE setup = filterelt = 0x55e43b8533b0 __func__ = "eventXfwmFilter" #9 0x00007f8a7596da0f in gdk_event_apply_filters (xevent=xevent@entry=0x7ffd659e9cb0, event=event@entry=0x7f8a5c00a520, window=window@entry=0x0) at gdkeventsource.c:79 filter = 0x55e43b8322c0 node = tmp_list = 0x55e43b2d4760 = {0x55e43b8322c0} result = #10 0x00007f8a7596de02 in gdk_event_source_translate_event (xevent=0x7ffd659e9cb0, event_source=0x55e43b1a47c0) at gdkeventsource.c:198 dpy = 0x55e43b179bf0 event = 0x7f8a5c00a520 result = GDK_FILTER_CONTINUE event_translator = 0x0 xevent = {type = 35, xany = {type = 35, serial = 178363016, send_event = 0, display = 0x55e43b179bf0, window = 17179869315}, xkey = {type = 35, serial = 178363016, send_event = 0, display = 0x55e43b179bf0, window = 17179869315, root = 99829, subwindow = 94438739927616, time = 136187554, x = 0, y = 15335754, x_root = 28576411, y_root = 15335754, state = 0, keycode = 2, same_screen = 1}, xbutton = {type = 35, serial = 178363016, send_event = 0, display = 0x55e43b179bf0, window = 17179869315, root = 99829, subwindow = 94438739927616, time = 136187554, x = 0, y = 15335754, x_root = 28576411, y_root = 15335754, state = 0, button = 2, same_screen = 1}, xmotion = {type = 35, serial = 178363016, send_event = 0, display = 0x55e43b179bf0, window = 17179869315, root = 99829, subwindow = 94438739927616, time = 136187554, x = 0, y = 15335754, x_root = 28576411, y_root = 15335754, state = 0, is_hint = 2 '\002', same_screen = 1}, xcrossing = {type = 35, serial = 178363016, send_event = 0, display = 0x55e43b179bf0, window = 17179869315, root = 99829, subwindow = 94438739927616, time = 136187554, x = 0, y = 15335754, x_root = 28576411, y_root = 15335754, mode = 0, detail = 2, same_screen = 1, focus = 1, state = 16}, xfocus = {type = 35, serial = 178363016, send_event = 0, display = 0x55e43b179bf0, window = 17179869315, mode = 99829, detail = 0}, xexpose = {type = 35, serial = 178363016, send_event = 0, display = 0x55e43b179bf0, window = 17179869315, x = 99829, y = 0, width = 999023168, height = 21988, count = 136187554}, xgraphicsexpose = {type = 35, serial = 178363016, send_event = 0, display = 0x55e43b179bf0, drawable = 17179869315, x = 99829, y = 0, width = 999023168, height = 21988, count = 136187554, major_code = 0, minor_code = 0}, xnoexpose = {type = 35, serial = 178363016, send_event = 0, display = 0x55e43b179bf0, drawable = 17179869315, major_code = 99829, minor_code = 0}, xvisibility = {type = 35, serial = 178363016, send_event = 0, display = 0x55e43b179bf0, window = 17179869315, state = 99829}, xcreatewindow = {type = 35, serial = 178363016, send_event = 0, display = 0x55e43b179bf0, parent = 17179869315, window = 99829, x = 999023168, y = 21988, width = 136187554, height = 0, border_width = 0, override_redirect = 15335754}, xdestroywindow = {type = 35, serial = 178363016, send_event = 0, display = 0x55e43b179bf0, event = 17179869315, window = 99829}, xunmap = {type = 35, serial = 178363016, send_event = 0, display = 0x55e43b179bf0, event = 17179869315, window = 99829, from_configure = 999023168}, xmap = {type = 35, serial = 178363016, send_event = 0, display = 0x55e43b179bf0, event = 17179869315, window = 99829, override_redirect = 999023168}, xmaprequest = {type = 35, serial = 178363016, send_event = 0, display = 0x55e43b179bf0, parent = 17179869315, window = 99829}, xreparent = {type = 35, serial = 178363016, send_event = 0, display = 0x55e43b179bf0, event = 17179869315, window = 99829, parent = 94438739927616, x = 136187554, y = 0, override_redirect = 0}, xconfigure = {type = 35, serial = 178363016, send_event = 0, display = 0x55e43b179bf0, event = 17179869315, window = 99829, x = 999023168, y = 21988, width = 136187554, height = 0, border_width = 0, above = 65866561918077595, override_redirect = 0}, xgravity = {type = 35, serial = 178363016, send_event = 0, display = 0x55e43b179bf0, event = 17179869315, window = 99829, x = 999023168, y = 21988}, xresizerequest = {type = 35, serial = 178363016, send_event = 0, display = 0x55e43b179bf0, window = 17179869315, width = 99829, height = 0}, xconfigurerequest = {type = 35, serial = 178363016, send_event = 0, display = 0x55e43b179bf0, parent = 17179869315, window = 99829, x = 999023168, y = 21988, width = 136187554, height = 0, border_width = 0, above = 65866561918077595, detail = 0, value_mask = 4294967297}, xcirculate = {type = 35, serial = 178363016, send_event = 0, display = 0x55e43b179bf0, event = 17179869315, window = 99829, place = 999023168}, xcirculaterequest = {type = 35, serial = 178363016, send_event = 0, display = 0x55e43b179bf0, parent = 17179869315, window = 99829, place = 999023168}, xproperty = {type = 35, serial = 178363016, send_event = 0, display = 0x55e43b179bf0, window = 17179869315, atom = 99829, time = 94438739927616, state = 136187554}, xselectionclear = {type = 35, serial = 178363016, send_event = 0, display = 0x55e43b179bf0, window = 17179869315, selection = 99829, time = 94438739927616}, xselectionrequest = {type = 35, serial = 178363016, send_event = 0, display = 0x55e43b179bf0, owner = 17179869315, requestor = 99829, selection = 94438739927616, target = 136187554, property = 65866561889501184, time = 65866561918077595}, xselection = {type = 35, serial = 178363016, send_event = 0, display = 0x55e43b179bf0, requestor = 17179869315, selection = 99829, target = 94438739927616, property = 136187554, time = 65866561889501184}, xcolormap = {type = 35, serial = 178363016, send_event = 0, display = 0x55e43b179bf0, window = 17179869315, colormap = 99829, new = 999023168, state = 21988}, xclient = {type = 35, serial = 178363016, send_event = 0, display = 0x55e43b179bf0, window = 17179869315, message_type = 99829, format = 999023168, data = {b = "\242\016\036\b\000\000\000\000\000\000\000\000J\001\352\000\233\n\264\001", s = {3746, 2078, 0, 0, 0, 0, 330, 234, 2715, 436}, l = {136187554, 65866561889501184, 65866561918077595, 8589934592, 4294967297}}}, xmapping = {type = 35, serial = 178363016, send_event = 0, display = 0x55e43b179bf0, window = 17179869315, request = 99829, first_keycode = 0, count = 999023168}, xerror = {type = 35, display = 0xaa19a88, resourceid = 0, serial = 94438732307440, error_code = 131 '\203', request_code = 0 '\000', minor_code = 0 '\000'}, xkeymap = {type = 35, serial = 178363016, send_event = 0, display = 0x55e43b179bf0, window = 17179869315, key_vector = "\365\205\001\000\000\000\000\000@\342\213;\344U\000\000\242\016\036\b\000\000\000\000\000\000\000\000J", }, xgeneric = {type = 35, serial = 178363016, send_event = 0, display = 0x55e43b179bf0, extension = 131, evtype = 4}, xcookie = {type = 35, serial = 178363016, send_event = 0, display = 0x55e43b179bf0, extension = 131, evtype = 4, cookie = 99829, data = 0x55e43b8be240}, pad = {35, 178363016, 0, 94438732307440, 17179869315, 99829, 94438739927616, 136187554, 65866561889501184, 65866561918077595, 8589934592, 4294967297, 1604156992132218896, 3264019376382680655, -6250683711121843126, -126916335534727863, -6467420548388217784, 72057590669580609, 72057589759737855, 72057589759737855, 3261481655021338623, 8736167727540346189, -103747065502097335, -16706203015868487}} xdisplay = 0x55e43b179bf0 event_source = 0x55e43b1a47c0 display_x11 = 0x55e43b1880e0 [GdkX11Display] #11 0x00007f8a7596de02 in _gdk_x11_display_queue_events (display=0x55e43b1880e0 [GdkX11Display]) at gdkeventsource.c:341 xevent = {type = 35, xany = {type = 35, serial = 178363016, send_event = 0, display = 0x55e43b179bf0, window = 17179869315}, xkey = {type = 35, serial = 178363016, send_event = 0, display = 0x55e43b179bf0, window = 17179869315, root = 99829, subwindow = 94438739927616, time = 136187554, x = 0, y = 15335754, x_root = 28576411, y_root = 15335754, state = 0, keycode = 2, same_screen = 1}, xbutton = {type = 35, serial = 178363016, send_event = 0, display = 0x55e43b179bf0, window = 17179869315, root = 99829, subwindow = 94438739927616, time = 136187554, x = 0, y = 15335754, x_root = 28576411, y_root = 15335754, state = 0, button = 2, same_screen = 1}, xmotion = {type = 35, serial = 178363016, send_event = 0, display = 0x55e43b179bf0, window = 17179869315, root = 99829, subwindow = 94438739927616, time = 136187554, x = 0, y = 15335754, x_root = 28576411, y_root = 15335754, state = 0, is_hint = 2 '\002', same_screen = 1}, xcrossing = {type = 35, serial = 178363016, send_event = 0, display = 0x55e43b179bf0, window = 17179869315, root = 99829, subwindow = 94438739927616, time = 136187554, x = 0, y = 15335754, x_root = 28576411, y_root = 15335754, mode = 0, detail = 2, same_screen = 1, focus = 1, state = 16}, xfocus = {type = 35, serial = 178363016, send_event = 0, display = 0x55e43b179bf0, window = 17179869315, mode = 99829, detail = 0}, xexpose = {type = 35, serial = 178363016, send_event = 0, display = 0x55e43b179bf0, window = 17179869315, x = 99829, y = 0, width = 999023168, height = 21988, count = 136187554}, xgraphicsexpose = {type = 35, serial = 178363016, send_event = 0, display = 0x55e43b179bf0, drawable = 17179869315, x = 99829, y = 0, width = 999023168, height = 21988, count = 136187554, major_code = 0, minor_code = 0}, xnoexpose = {type = 35, serial = 178363016, send_event = 0, display = 0x55e43b179bf0, drawable = 17179869315, major_code = 99829, minor_code = 0}, xvisibility = {type = 35, serial = 178363016, send_event = 0, display = 0x55e43b179bf0, window = 17179869315, state = 99829}, xcreatewindow = {type = 35, serial = 178363016, send_event = 0, display = 0x55e43b179bf0, parent = 17179869315, window = 99829, x = 999023168, y = 21988, width = 136187554, height = 0, border_width = 0, override_redirect = 15335754}, xdestroywindow = {type = 35, serial = 178363016, send_event = 0, display = 0x55e43b179bf0, event = 17179869315, window = 99829}, xunmap = {type = 35, serial = 178363016, send_event = 0, display = 0x55e43b179bf0, event = 17179869315, window = 99829, from_configure = 999023168}, xmap = {type = 35, serial = 178363016, send_event = 0, display = 0x55e43b179bf0, event = 17179869315, window = 99829, override_redirect = 999023168}, xmaprequest = {type = 35, serial = 178363016, send_event = 0, display = 0x55e43b179bf0, parent = 17179869315, window = 99829}, xreparent = {type = 35, serial = 178363016, send_event = 0, display = 0x55e43b179bf0, event = 17179869315, window = 99829, parent = 94438739927616, x = 136187554, y = 0, override_redirect = 0}, xconfigure = {type = 35, serial = 178363016, send_event = 0, display = 0x55e43b179bf0, event = 17179869315, window = 99829, x = 999023168, y = 21988, width = 136187554, height = 0, border_width = 0, above = 65866561918077595, override_redirect = 0}, xgravity = {type = 35, serial = 178363016, send_event = 0, display = 0x55e43b179bf0, event = 17179869315, window = 99829, x = 999023168, y = 21988}, xresizerequest = {type = 35, serial = 178363016, send_event = 0, display = 0x55e43b179bf0, window = 17179869315, width = 99829, height = 0}, xconfigurerequest = {type = 35, serial = 178363016, send_event = 0, display = 0x55e43b179bf0, parent = 17179869315, window = 99829, x = 999023168, y = 21988, width = 136187554, height = 0, border_width = 0, above = 65866561918077595, detail = 0, value_mask = 4294967297}, xcirculate = {type = 35, serial = 178363016, send_event = 0, display = 0x55e43b179bf0, event = 17179869315, window = 99829, place = 999023168}, xcirculaterequest = {type = 35, serial = 178363016, send_event = 0, display = 0x55e43b179bf0, parent = 17179869315, window = 99829, place = 999023168}, xproperty = {type = 35, serial = 178363016, send_event = 0, display = 0x55e43b179bf0, window = 17179869315, atom = 99829, time = 94438739927616, state = 136187554}, xselectionclear = {type = 35, serial = 178363016, send_event = 0, display = 0x55e43b179bf0, window = 17179869315, selection = 99829, time = 94438739927616}, xselectionrequest = {type = 35, serial = 178363016, send_event = 0, display = 0x55e43b179bf0, owner = 17179869315, requestor = 99829, selection = 94438739927616, target = 136187554, property = 65866561889501184, time = 65866561918077595}, xselection = {type = 35, serial = 178363016, send_event = 0, display = 0x55e43b179bf0, requestor = 17179869315, selection = 99829, target = 94438739927616, property = 136187554, time = 65866561889501184}, xcolormap = {type = 35, serial = 178363016, send_event = 0, display = 0x55e43b179bf0, window = 17179869315, colormap = 99829, new = 999023168, state = 21988}, xclient = {type = 35, serial = 178363016, send_event = 0, display = 0x55e43b179bf0, window = 17179869315, message_type = 99829, format = 999023168, data = {b = "\242\016\036\b\000\000\000\000\000\000\000\000J\001\352\000\233\n\264\001", s = {3746, 2078, 0, 0, 0, 0, 330, 234, 2715, 436}, l = {136187554, 65866561889501184, 65866561918077595, 8589934592, 4294967297}}}, xmapping = {type = 35, serial = 178363016, send_event = 0, display = 0x55e43b179bf0, window = 17179869315, request = 99829, first_keycode = 0, count = 999023168}, xerror = {type = 35, display = 0xaa19a88, resourceid = 0, serial = 94438732307440, error_code = 131 '\203', request_code = 0 '\000', minor_code = 0 '\000'}, xkeymap = {type = 35, serial = 178363016, send_event = 0, display = 0x55e43b179bf0, window = 17179869315, key_vector = "\365\205\001\000\000\000\000\000@\342\213;\344U\000\000\242\016\036\b\000\000\000\000\000\000\000\000J", }, xgeneric = {type = 35, serial = 178363016, send_event = 0, display = 0x55e43b179bf0, extension = 131, evtype = 4}, xcookie = {type = 35, serial = 178363016, send_event = 0, display = 0x55e43b179bf0, extension = 131, evtype = 4, cookie = 99829, data = 0x55e43b8be240}, pad = {35, 178363016, 0, 94438732307440, 17179869315, 99829, 94438739927616, 136187554, 65866561889501184, 65866561918077595, 8589934592, 4294967297, 1604156992132218896, 3264019376382680655, -6250683711121843126, -126916335534727863, -6467420548388217784, 72057590669580609, 72057589759737855, 72057589759737855, 3261481655021338623, 8736167727540346189, -103747065502097335, -16706203015868487}} xdisplay = 0x55e43b179bf0 event_source = 0x55e43b1a47c0 display_x11 = 0x55e43b1880e0 [GdkX11Display] #12 0x00007f8a75937890 in gdk_display_get_event (display=display@entry=0x55e43b1880e0 [GdkX11Display]) at gdkdisplay.c:438 __func__ = "gdk_display_get_event" #13 0x00007f8a7596daa2 in gdk_event_source_dispatch (source=, callback=, user_data=) at gdkeventsource.c:363 display = 0x55e43b1880e0 [GdkX11Display] event = #14 0x00007f8a74602e07 in g_main_dispatch (context=0x55e43b1a4840) at gmain.c:3142 dispatch = 0x7f8a7596da90 prev_source = 0x0 was_in_call = 0 user_data = 0x0 callback = 0x0 cb_funcs = 0x0 cb_data = 0x0 need_destroy = source = 0x55e43b1a47c0 current = 0x55e43b1c0b80 i = 0 #15 0x00007f8a74602e07 in g_main_context_dispatch (context=context@entry=0x55e43b1a4840) at gmain.c:3795 #16 0x00007f8a746031b0 in g_main_context_iterate (context=0x55e43b1a4840, block=block@entry=1, dispatch=dispatch@entry=1, self=) at gmain.c:3868 max_priority = 0 timeout = 0 some_ready = 1 nfds = allocated_nfds = 4 fds = 0x55e43b83f5e0 #17 0x00007f8a746034c2 in g_main_loop_run (loop=0x55e43b81ab50) at gmain.c:4064 __func__ = "g_main_loop_run" #18 0x00007f8a75e3d515 in gtk_main () at gtkmain.c:1323 loop = 0x55e43b81ab50 #19 0x000055e439169a29 in main (argc=, argv=) at main.c:773 version = 0 replace_wm = 1 context = error = 0x0 option_entries = {{long_name = 0x55e4391a5589 "daemon", short_name = 0 '\000', flags = 8, arg = G_OPTION_ARG_CALLBACK, arg_data = 0x55e439186c10 , description = 0x55e4391a5178 "Fork to the background (not supported)", arg_description = 0x0}, {long_name = 0x55e4391a5590 "compositor", short_name = 0 '\000', flags = 0, arg = G_OPTION_ARG_CALLBACK, arg_data = 0x55e439187170 , description = 0x55e4391a559b "Set the compositor mode", arg_description = 0x55e4391a55b3 "on|off|auto"}, {long_name = 0x55e4391a55bf "vblank", short_name = 0 '\000', flags = 0, arg = G_OPTION_ARG_CALLBACK, arg_data = 0x55e439187090 , description = 0x55e4391a55c6 "Set the vblank mode", arg_description = 0x55e4391a55da "off|glx"}, {long_name = 0x55e4391a55e2 "replace", short_name = 0 '\000', flags = 0, arg = G_OPTION_ARG_NONE, arg_data = 0x7ffd659e9f44, description = 0x55e4391a51a0 "Replace the existing window manager", arg_description = 0x0}, {long_name = 0x55e4391a55ea "version", short_name = 86 'V', flags = 0, arg = G_OPTION_ARG_NONE, arg_data = 0x7ffd659e9f40, description = 0x55e4391a51c8 "Print version information and exit", arg_description = 0x0}, {long_name = 0x0, short_name = 0 '\000', flags = 0, arg = G_OPTION_ARG_NONE, arg_data = 0x0, description = 0x0, arg_description = 0x0}} (gdb) bt #0 0x000055e439179f71 in myDisplayGetDefaultScreen (display=display@entry=0x55e43b91a0e0) at display.c:755 #1 0x000055e439185468 in getXServerTime (display_info=0x55e43b91a0e0) at hints.c:1325 #2 0x000055e43917a0c5 in myDisplayGetTime (display=display@entry=0x55e43b91a0e0, timestamp=) at display.c:853 #3 0x000055e43916c7a5 in clientClose (c=0x55e43bbd0280) at client.c:2653 #4 0x000055e43916f307 in clientButtonPress (c=c@entry=0x55e43bbd0280, w=w@entry=66241163, event=event@entry=0x55e43b86a1a0) at client.c:3929 #5 0x000055e43917d2e8 in handleButtonPress (event=0x55e43b86a1a0, display_info=0x55e43b46d5c0) at events.c:974 #6 0x000055e43917d2e8 in handleEvent (event=, display_info=0x55e43b46d5c0) at events.c:2233 #7 0x000055e43917d2e8 in xfwm4_event_filter (event=0x55e43b86a1a0, data=0x55e43b46d5c0) at events.c:2344 #8 0x000055e43917a799 in eventXfwmFilter (gdk_xevent=, gevent=, data=) at event_filter.c:177 #9 0x00007f8a7596da0f in gdk_event_apply_filters (xevent=xevent@entry=0x7ffd659e9cb0, event=event@entry=0x7f8a5c00a520, window=window@entry=0x0) at gdkeventsource.c:79 #10 0x00007f8a7596de02 in gdk_event_source_translate_event (xevent=0x7ffd659e9cb0, event_source=0x55e43b1a47c0) at gdkeventsource.c:198 #11 0x00007f8a7596de02 in _gdk_x11_display_queue_events (display=0x55e43b1880e0 [GdkX11Display]) at gdkeventsource.c:341 #12 0x00007f8a75937890 in gdk_display_get_event (display=display@entry=0x55e43b1880e0 [GdkX11Display]) at gdkdisplay.c:438 #13 0x00007f8a7596daa2 in gdk_event_source_dispatch (source=, callback=, user_data=) at gdkeventsource.c:363 #14 0x00007f8a74602e07 in g_main_dispatch (context=0x55e43b1a4840) at gmain.c:3142 #15 0x00007f8a74602e07 in g_main_context_dispatch (context=context@entry=0x55e43b1a4840) at gmain.c:3795 #16 0x00007f8a746031b0 in g_main_context_iterate (context=0x55e43b1a4840, block=block@entry=1, dispatch=dispatch@entry=1, self=) at gmain.c:3868 #17 0x00007f8a746034c2 in g_main_loop_run (loop=0x55e43b81ab50) at gmain.c:4064 #18 0x00007f8a75e3d515 in gtk_main () at gtkmain.c:1323 #19 0x000055e439169a29 in main (argc=, argv=) at main.c:773 (gdb) p list $1 = 0x64515a5300000033 = {Cannot access memory at address 0x64515a5300000033 (gdb) l 750 g_return_val_if_fail (display != NULL, NULL); 751 752 list = display->screens; 753 if (list) 754 { 755 return (ScreenInfo *) list->data; 756 } 757 758 return NULL; 759 } (gdb) p *display $2 = {gdisplay = 0x1, dpy = 0xf00000154, session = 0x15000000295, quit = 0, reload = 0, timestamp_win = 94437740928000, busy_cursor = 33, move_cursor = 94438741123888, root_cursor = 178183908, resize_cursor = {94438734328256, 33, 94438741123888, 178184034, 94438734699776, 33, 64, 94438738849824}, atoms = {0, 33, 7161128523522010999, 8747515907845218149, 108170164728832, 209, 94438732788480, 94438740299776, 0, 94438732788576, 94438740299776, 0, 94438732791808, 94438740299776, 0, 94438732791904, 94438740299776, 0, 94438732792192, 94438733813312, 0, 94438732749280, 140232667251744, 0, 94438732794048, 140232667251744, 0, 94438732749376, 94438733813568, 0, 208, 49, 2, 33423360, 3, 140232667248288, 48, 3249, 94438740180616, 94438740180616, 94438735644768, 140232647292592, 94438740180176, 94438735644768, 94438739477552, 94438735644888, 0, 0, 0, 863288426496, 4985323623146325533, 6721623818441, 8778913153075, 8778913154589, 7659312734843961343, 0, 0, 94438740305776, 0, 5429449191745127965, 1876900708354, 6010421386286204010, 4853313044917, 6721623818441, 6721623819370, 5941995268701421567, 0, 0, 94438740305688, 0, 5066356539191723114, 3225520439298, 5642245438074520303, 3225520440047, 4853313044917, 4853313045231, 6432339246660452351, 0, 0, 94438740305600, 0, 8028906868371882735, 4853313044482, 7447342410725589429, 1876900709482, 3225520440047, 3225520439733, 8012028419992715263, 0, 0, 94438740305512, 0, 5075116253840933301, 6721623818242, 7958269839062073545, 863288428061, 1876900709482, 1876900708553, 8530171986091966463, 0, 0, 94438740305424, 0}, xfilter = 0x49627955000000c9, devices = 0x7fc00000002, screens = 0x64515a5300000033 = { (gdb) p/x *display $3 = {gdisplay = 0x1, dpy = 0xf00000154, session = 0x15000000295, quit = 0x0, reload = 0x0, timestamp_win = 0x55e400005c00, busy_cursor = 0x21, move_cursor = 0x55e43b9e2330, root_cursor = 0xa9edee4, resize_cursor = {0x55e43b3671c0, 0x21, 0x55e43b9e2330, 0xa9edf62, 0x55e43b3c1d00, 0x21, 0x40, 0x55e43b7b7020}, atoms = {0x0, 0x21, 0x636170736b726f77, 0x79656b5f32315f65, 0x6261543e7400, 0xd1, 0x55e43b1ef300, 0x55e43b919000, 0x0, 0x55e43b1ef360, 0x55e43b919000, 0x0, 0x55e43b1f0000, 0x55e43b919000, 0x0, 0x55e43b1f0060, 0x55e43b919000, 0x0, 0x55e43b1f0180, 0x55e43b2e9640, 0x0, 0x55e43b1e59e0, 0x7f8a76514420, 0x0, 0x55e43b1f08c0, 0x7f8a76514420, 0x0, 0x55e43b1e5a40, 0x55e43b2e9740, 0x0, 0xd0, 0x31, 0x2, 0x1fe0000, 0x3, 0x7f8a765136a0, 0x30, 0xcb1, 0x55e43b8fbe88, 0x55e43b8fbe88, 0x55e43b4a8860, 0x7f8a7520b6b0, 0x55e43b8fbcd0, 0x55e43b4a8860, 0x55e43b850430, 0x55e43b4a88d8, 0x0, 0x0, 0x0, 0xc900000000, 0x452f6d6c0000061d, 0x61d000000c9, 0x7fc00000033, 0x7fc0000061d, 0x6a4b5859ffffffff, 0x0, 0x0, 0x55e43b91a770, 0x0, 0x4b5947460000061d, 0x1b500000002, 0x53694e680000046a, 0x46a000001b5, 0x61d000000c9, 0x61d0000046a, 0x52763536ffffffff, 0x0, 0x0, 0x55e43b91a718, 0x0, 0x464f506e0000046a, 0x2ef00000002, 0x4e4d4855000002ef, 0x2ef000002ef, 0x46a000001b5, 0x46a000002ef, 0x59444276ffffffff, 0x0, 0x0, 0x55e43b91a6c0, 0x0, 0x6f6c6842000002ef, 0x46a00000002, 0x675a4677000001b5, 0x1b50000046a, 0x2ef000002ef, 0x2ef000001b5, 0x6f307165ffffffff, 0x0, 0x0, 0x55e43b91a668, 0x0, 0x466e6f58000001b5, 0x61d00000002, 0x6e717441000000c9, 0xc90000061d, 0x1b50000046a, 0x1b5000000c9, 0x76614239ffffffff, 0x0, 0x0, 0x55e43b91a610, 0x0}, xfilter = 0x49627955000000c9, devices = 0x7fc00000002, screens = 0x64515a5300000033 = { (gdb) up #1 0x000055e439185468 in getXServerTime (display_info=0x55e43b91a0e0) at hints.c:1325 1325 screen_info = myDisplayGetDefaultScreen (display_info); (gdb) l 1320 1321 g_return_val_if_fail (display_info, CurrentTime); 1322 timestamp = myDisplayGetCurrentTime (display_info); 1323 if (timestamp == CurrentTime) 1324 { 1325 screen_info = myDisplayGetDefaultScreen (display_info); 1326 g_return_val_if_fail (screen_info, CurrentTime); 1327 1328 TRACE ("using X server roundtrip"); 1329 updateXserverTime (display_info); (gdb) q PID: 23093 (xfwm4) UID: 1000 (olaf) GID: 100 (users) Signal: 11 (SEGV) Timestamp: Wed 2019-05-15 10:54:24 CEST (23s ago) Command Line: xfwm4 --replace Executable: /usr/bin/xfwm4 Control Group: /user.slice/user-1000.slice/session-1.scope Unit: session-1.scope Slice: user-1000.slice Session: 1 Owner UID: 1000 (olaf) Boot ID: 6c706358bdb14146866402cf44fe0355 Machine ID: ca6bb37d865159a93f29a1405937ca0e Hostname: latitude Storage: /var/lib/systemd/coredump/core.xfwm4.1000.6c706358bdb14146866402cf44fe0355.23093.1557910464000000.lz4 Message: Process 23093 (xfwm4) of user 1000 dumped core.