GNU gdb (Ubuntu 7.11.1-0ubuntu1~16.04) 7.11.1 Copyright (C) 2016 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-linux-gnu". 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". Attaching to process 2633 [New LWP 2634] [New LWP 2635] [New LWP 2636] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". 0x00007fe89b7109e3 in select () at ../sysdeps/unix/syscall-template.S:84 (gdb) cont Continuing. Thread 1 "Xorg" received signal SIGBUS, Bus error. 0x00007fe89780ffc0 in __kgem_bo_make_scanout (kgem=kgem@entry=0x7fe89d81c000, bo=bo@entry=0x5635ffe6d880, width=width@entry=11520, height=height@entry=2160) at ../../../src/sna/kgem.c:5299 (gdb) bt full #0 0x00007fe89780ffc0 in __kgem_bo_make_scanout (kgem=kgem@entry=0x7fe89d81c000, bo=bo@entry=0x5635ffe6d880, width=width@entry=11520, height=height@entry=2160) at ../../../src/sna/kgem.c:5299 scrn = arg = {fb_id = 0, width = 11520, height = 2160, pitch = 46080, bpp = 32, depth = 24, handle = 19} #1 0x00007fe897810f3c in kgem_create_2d (kgem=kgem@entry=0x7fe89d81c000, width=, height=, bpp=bpp@entry=32, tiling=, flags=) at ../../../src/sna/kgem.c:5983 cache = bo = 0x5635ffe6d880 pitch = 46080 tiled_height = size = handle = i = bucket = retry = exact = #2 0x00007fe8978ee355 in sna_dri2_create_buffer (draw=0x5635ffb84190, attachment=1, format=32) at ../../../src/sna/sna_dri2.c:686 buffer = pixmap = 0x0 bo = bpp = 32 flags = size = #3 0x00005635fdb80c3c in create_buffer (ds=0x20, ds=0x20, format=32, attachment=1, pDraw=0x5635ffb84190) at ../../../../hw/xfree86/dri2/dri2.c:465 buffer = #4 allocate_or_reuse_buffer (pDraw=pDraw@entry=0x5635ffb84190, ds=ds@entry=0x5635ffa36070, pPriv=pPriv@entry=0x5635ffdafe70, attachment=attachment@entry=1, format=format@entry=32, dimensions_match=dimensions_match@entry=1, buffer=0x5635ffe05b50) at ../../../../hw/xfree86/dri2/dri2.c:512 No locals. #5 0x00005635fdb81723 in do_get_buffers (pDraw=0x5635ffb84190, width=width@entry=0x7ffc281c14f8, height=height@entry=0x7ffc281c1500, attachments=0x5635ffea0454, attachments@entry=0x5635ffea044c, count=1, out_count=out_count@entry=0x7ffc281c1508, has_format=1) at ../../../../hw/xfree86/dri2/dri2.c:588 attachment = 1 pPriv = 0x5635ffdafe70 ds = 0x5635ffa36070 buffers = 0x5635ffe05b50 need_real_front = 0 need_fake_front = 0 have_fake_front = 0 front_format = 0 dimensions_match = 1 buffers_changed = 0 i = 0 #6 0x00005635fdb81b1b in DRI2GetBuffersWithFormat (pDraw=, width=width@entry=0x7ffc281c14f8, height=height@entry=0x7ffc281c1500, attachments=attachments@entry=0x5635ffea044c, count=, out_count=out_count@entry=0x7ffc281c1508) at ../../../../hw/xfree86/dri2/dri2.c:705 No locals. #7 0x00005635fdb835d8 in ProcDRI2GetBuffersWithFormat (client=0x5635ffe7a220) at ../../../../hw/xfree86/dri2/dri2ext.c:317 buffers = status = count = 153 stuff = 0x5635ffea0440 pDrawable = 0x5635ffb84190 width = -35332736 height = -1596896 attachments = 0x5635ffea044c #8 ProcDRI2Dispatch (client=0x5635ffe7a220) at ../../../../hw/xfree86/dri2/dri2ext.c:619 stuff = 0x5635ffea0440 #9 0x00005635fda50d5f in Dispatch () at ../../dix/dispatch.c:430 clientReady = 0x5635ffe197a0 result = client = 0x5635ffe7a220 nready = 0 icheck = 0x5635fde512b0 start_tick = 1605 #10 0x00005635fda54dd3 in dix_main (argc=11, argv=0x7ffc281c1718, envp=) at ../../dix/main.c:300 i = alwaysCheckForInput = {0, 1} #11 0x00007fe89b634830 in __libc_start_main (main=0x5635fda3f010
, argc=11, argv=0x7ffc281c1718, init=, fini=, rtld_fini=, stack_end=0x7ffc281c1708) at ../csu/libc-start.c:291 result = unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, -4150067662011859253, 94789888634912, 140720981415696, 0, 0, -7641390086785696053, -7647900735926796597}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0xb, 0x5635fda3f010
}, data = {prev = 0x0, cleanup = 0x0, canceltype = 11}}} not_first_call = #12 0x00005635fda3f049 in _start () No symbol table info available. (gdb) cont Continuing. Thread 1 "Xorg" received signal SIGBUS, Bus error. 0x00007fe89780ffc0 in __kgem_bo_make_scanout (kgem=kgem@entry=0x7fe89d81c000, bo=bo@entry=0x5635ffe59e80, width=width@entry=11520, height=height@entry=2160) at ../../../src/sna/kgem.c:5299 5299 in ../../../src/sna/kgem.c (gdb) q A debugging session is active. Inferior 1 [process 2633] will be detached. Quit anyway? (y or n) y Detaching from program: /usr/lib/xorg/Xorg, process 2633