(gdb) bt #0 0x00007fffc7a2e13c in _mesa_meta_begin () at /usr/lib64/dri/i965_dri.so #1 0x00007fffc7bd2feb in brw_meta_updownsample () at /usr/lib64/dri/i965_dri.so #2 0x00007fffc7c2b149 in intel_miptree_updownsample () at /usr/lib64/dri/i965_dri.so #3 0x00007fffc7c29c75 in intel_map_renderbuffer () at /usr/lib64/dri/i965_dri.so #4 0x00007fffc7a001d1 in map_attachment () at /usr/lib64/dri/i965_dri.so #5 0x00007fffc7a008e3 in _swrast_map_renderbuffers () at /usr/lib64/dri/i965_dri.so #6 0x00007fffc79f5892 in _swrast_render_start () at /usr/lib64/dri/i965_dri.so #7 0x00007fffc7a23b27 in _swsetup_RenderStart () at /usr/lib64/dri/i965_dri.so #8 0x00007fffc79e3816 in run_render () at /usr/lib64/dri/i965_dri.so #9 0x00007fffc79d0992 in _tnl_run_pipeline () at /usr/lib64/dri/i965_dri.so #10 0x00007fffc79cff9c in _tnl_draw_prims () at /usr/lib64/dri/i965_dri.so #11 0x00007fffc7b6f55c in brw_draw_prims () at /usr/lib64/dri/i965_dri.so #12 0x00007fffc79b75cc in vbo_exec_vtx_flush () at /usr/lib64/dri/i965_dri.so #13 0x00007fffc799de3c in vbo_exec_FlushVertices_internal () at /usr/lib64/dri/i965_dri.so #14 0x00007fffc79b43f3 in vbo_exec_FlushVertices () at /usr/lib64/dri/i965_dri.so #15 0x00007fffc78bfcd2 in _mesa_set_enablei () at /usr/lib64/dri/i965_dri.so #16 0x00007fffc7a2e254 in _mesa_meta_begin () at /usr/lib64/dri/i965_dri.so #17 0x00007fffc7bd2feb in brw_meta_updownsample () at /usr/lib64/dri/i965_dri.so #18 0x00007fffc7c2b149 in intel_miptree_updownsample () at /usr/lib64/dri/i965_dri.so #19 0x00007fffc7c29c75 in intel_map_renderbuffer () at /usr/lib64/dri/i965_dri.so #20 0x00007fffc7a001d1 in map_attachment () at /usr/lib64/dri/i965_dri.so #21 0x00007fffc7a008e3 in _swrast_map_renderbuffers () at /usr/lib64/dri/i965_dri.so #22 0x00007fffc79f5892 in _swrast_render_start () at /usr/lib64/dri/i965_dri.so #23 0x00007fffc7a23b27 in _swsetup_RenderStart () at /usr/lib64/dri/i965_dri.so #24 0x00007fffc79e3816 in run_render () at /usr/lib64/dri/i965_dri.so #25 0x00007fffc79d0992 in _tnl_run_pipeline () at /usr/lib64/dri/i965_dri.so #26 0x00007fffc79cff9c in _tnl_draw_prims () at /usr/lib64/dri/i965_dri.so #27 0x00007fffc7b6f55c in brw_draw_prims () at /usr/lib64/dri/i965_dri.so #28 0x00007fffc79b75cc in vbo_exec_vtx_flush () at /usr/lib64/dri/i965_dri.so #29 0x00007fffc799de3c in vbo_exec_FlushVertices_internal () at /usr/lib64/dri/i965_dri.so #30 0x00007fffc79b43f3 in vbo_exec_FlushVertices () at /usr/lib64/dri/i965_dri.so #31 0x00007fffc78bfcd2 in _mesa_set_enablei () at /usr/lib64/dri/i965_dri.so #32 0x00007fffc7a2e254 in _mesa_meta_begin () at /usr/lib64/dri/i965_dri.so #33 0x00007fffc7bd2feb in brw_meta_updownsample () at /usr/lib64/dri/i965_dri.so #34 0x00007fffc7c2b149 in intel_miptree_updownsample () at /usr/lib64/dri/i965_dri.so ---Type to continue, or q to quit--- #35 0x00007fffc7c29c75 in intel_map_renderbuffer () at /usr/lib64/dri/i965_dri.so #36 0x00007fffc7a001d1 in map_attachment () at /usr/lib64/dri/i965_dri.so #37 0x00007fffc7a008e3 in _swrast_map_renderbuffers () at /usr/lib64/dri/i965_dri.so #38 0x00007fffc79f5892 in _swrast_render_start () at /usr/lib64/dri/i965_dri.so #39 0x00007fffc7a23b27 in _swsetup_RenderStart () at /usr/lib64/dri/i965_dri.so #40 0x00007fffc79e3816 in run_render () at /usr/lib64/dri/i965_dri.so #41 0x00007fffc79d0992 in _tnl_run_pipeline () at /usr/lib64/dri/i965_dri.so #42 0x00007fffc79cff9c in _tnl_draw_prims () at /usr/lib64/dri/i965_dri.so #43 0x00007fffc7b6f55c in brw_draw_prims () at /usr/lib64/dri/i965_dri.so #44 0x00007fffc79b75cc in vbo_exec_vtx_flush () at /usr/lib64/dri/i965_dri.so #45 0x00007fffc799de3c in vbo_exec_FlushVertices_internal () at /usr/lib64/dri/i965_dri.so #46 0x00007fffc79b43f3 in vbo_exec_FlushVertices () at /usr/lib64/dri/i965_dri.so #47 0x00007fffc78bfcd2 in _mesa_set_enablei () at /usr/lib64/dri/i965_dri.so #48 0x00007fffc7a2e254 in _mesa_meta_begin () at /usr/lib64/dri/i965_dri.so #49 0x00007fffc7bd2feb in brw_meta_updownsample () at /usr/lib64/dri/i965_dri.so #50 0x00007fffc7c2b149 in intel_miptree_updownsample () at /usr/lib64/dri/i965_dri.so #51 0x00007fffc7c29c75 in intel_map_renderbuffer () at /usr/lib64/dri/i965_dri.so #52 0x00007fffc7a001d1 in map_attachment () at /usr/lib64/dri/i965_dri.so #53 0x00007fffc7a008e3 in _swrast_map_renderbuffers () at /usr/lib64/dri/i965_dri.so #54 0x00007fffc79f5892 in _swrast_render_start () at /usr/lib64/dri/i965_dri.so #55 0x00007fffc7a23b27 in _swsetup_RenderStart () at /usr/lib64/dri/i965_dri.so #56 0x00007fffc79e3816 in run_render () at /usr/lib64/dri/i965_dri.so #57 0x00007fffc79d0992 in _tnl_run_pipeline () at /usr/lib64/dri/i965_dri.so #58 0x00007fffc79cff9c in _tnl_draw_prims () at /usr/lib64/dri/i965_dri.so #59 0x00007fffc7b6f55c in brw_draw_prims () at /usr/lib64/dri/i965_dri.so #60 0x00007fffc79b75cc in vbo_exec_vtx_flush () at /usr/lib64/dri/i965_dri.so #61 0x00007fffc799de3c in vbo_exec_FlushVertices_internal () at /usr/lib64/dri/i965_dri.so #62 0x00007fffc79b43f3 in vbo_exec_FlushVertices () at /usr/lib64/dri/i965_dri.so #63 0x00007fffc78bfcd2 in _mesa_set_enablei () at /usr/lib64/dri/i965_dri.so #64 0x00007fffc7a2e254 in _mesa_meta_begin () at /usr/lib64/dri/i965_dri.so #65 0x00007fffc7bd2feb in brw_meta_updownsample () at /usr/lib64/dri/i965_dri.so #66 0x00007fffc7c2b149 in intel_miptree_updownsample () at /usr/lib64/dri/i965_dri.so #67 0x00007fffc7c29c75 in intel_map_renderbuffer () at /usr/lib64/dri/i965_dri.so #68 0x00007fffc7a001d1 in map_attachment () at /usr/lib64/dri/i965_dri.so #69 0x00007fffc7a008e3 in _swrast_map_renderbuffers () at /usr/lib64/dri/i965_dri.so ---Type to continue, or q to quit--- #70 0x00007fffc79f5892 in _swrast_render_start () at /usr/lib64/dri/i965_dri.so #71 0x00007fffc7a23b27 in _swsetup_RenderStart () at /usr/lib64/dri/i965_dri.so #72 0x00007fffc79e3816 in run_render () at /usr/lib64/dri/i965_dri.so #73 0x00007fffc79d0992 in _tnl_run_pipeline () at /usr/lib64/dri/i965_dri.so #74 0x00007fffc79cff9c in _tnl_draw_prims () at /usr/lib64/dri/i965_dri.so #75 0x00007fffc7b6f55c in brw_draw_prims () at /usr/lib64/dri/i965_dri.so #76 0x00007fffc79b75cc in vbo_exec_vtx_flush () at /usr/lib64/dri/i965_dri.so #77 0x00007fffc799de3c in vbo_exec_FlushVertices_internal () at /usr/lib64/dri/i965_dri.so #78 0x00007fffc79b43f3 in vbo_exec_FlushVertices () at /usr/lib64/dri/i965_dri.so #79 0x00007fffc78bfcd2 in _mesa_set_enablei () at /usr/lib64/dri/i965_dri.so #80 0x00007fffc7a2e254 in _mesa_meta_begin () at /usr/lib64/dri/i965_dri.so #81 0x00007fffc7bd2feb in brw_meta_updownsample () at /usr/lib64/dri/i965_dri.so #82 0x00007fffc7c2b149 in intel_miptree_updownsample () at /usr/lib64/dri/i965_dri.so #83 0x00007fffc7c29c75 in intel_map_renderbuffer () at /usr/lib64/dri/i965_dri.so #84 0x00007fffc7a001d1 in map_attachment () at /usr/lib64/dri/i965_dri.so #85 0x00007fffc7a008e3 in _swrast_map_renderbuffers () at /usr/lib64/dri/i965_dri.so #86 0x00007fffc79f5892 in _swrast_render_start () at /usr/lib64/dri/i965_dri.so #87 0x00007fffc7a23b27 in _swsetup_RenderStart () at /usr/lib64/dri/i965_dri.so #88 0x00007fffc79e3816 in run_render () at /usr/lib64/dri/i965_dri.so #89 0x00007fffc79d0992 in _tnl_run_pipeline () at /usr/lib64/dri/i965_dri.so #90 0x00007fffc79cff9c in _tnl_draw_prims () at /usr/lib64/dri/i965_dri.so #91 0x00007fffc7b6f55c in brw_draw_prims () at /usr/lib64/dri/i965_dri.so #92 0x00007fffc79b75cc in vbo_exec_vtx_flush () at /usr/lib64/dri/i965_dri.so #93 0x00007fffc799de3c in vbo_exec_FlushVertices_internal () at /usr/lib64/dri/i965_dri.so #94 0x00007fffc79b43f3 in vbo_exec_FlushVertices () at /usr/lib64/dri/i965_dri.so #95 0x00007fffc78bfcd2 in _mesa_set_enablei () at /usr/lib64/dri/i965_dri.so #96 0x00007fffc7a2e254 in _mesa_meta_begin () at /usr/lib64/dri/i965_dri.so #97 0x00007fffc7bd2feb in brw_meta_updownsample () at /usr/lib64/dri/i965_dri.so #98 0x00007fffc7c2b149 in intel_miptree_updownsample () at /usr/lib64/dri/i965_dri.so #99 0x00007fffc7c29c75 in intel_map_renderbuffer () at /usr/lib64/dri/i965_dri.so #100 0x00007fffc7a001d1 in map_attachment () at /usr/lib64/dri/i965_dri.so #101 0x00007fffc7a008e3 in _swrast_map_renderbuffers () at /usr/lib64/dri/i965_dri.so #102 0x00007fffc79f5892 in _swrast_render_start () at /usr/lib64/dri/i965_dri.so #103 0x00007fffc7a23b27 in _swsetup_RenderStart () at /usr/lib64/dri/i965_dri.so #104 0x00007fffc79e3816 in run_render () at /usr/lib64/dri/i965_dri.so ---Type to continue, or q to quit--- #105 0x00007fffc79d0992 in _tnl_run_pipeline () at /usr/lib64/dri/i965_dri.so #106 0x00007fffc79cff9c in _tnl_draw_prims () at /usr/lib64/dri/i965_dri.so #107 0x00007fffc7b6f55c in brw_draw_prims () at /usr/lib64/dri/i965_dri.so #108 0x00007fffc79b75cc in vbo_exec_vtx_flush () at /usr/lib64/dri/i965_dri.so #109 0x00007fffc799de3c in vbo_exec_FlushVertices_internal () at /usr/lib64/dri/i965_dri.so #110 0x00007fffc79b43f3 in vbo_exec_FlushVertices () at /usr/lib64/dri/i965_dri.so #111 0x00007fffc78bfcd2 in _mesa_set_enablei () at /usr/lib64/dri/i965_dri.so #112 0x00007fffc7a2e254 in _mesa_meta_begin () at /usr/lib64/dri/i965_dri.so #113 0x00007fffc7bd2feb in brw_meta_updownsample () at /usr/lib64/dri/i965_dri.so #114 0x00007fffc7c2b149 in intel_miptree_updownsample () at /usr/lib64/dri/i965_dri.so #115 0x00007fffc7c29c75 in intel_map_renderbuffer () at /usr/lib64/dri/i965_dri.so #116 0x00007fffc7a001d1 in map_attachment () at /usr/lib64/dri/i965_dri.so #117 0x00007fffc7a008e3 in _swrast_map_renderbuffers () at /usr/lib64/dri/i965_dri.so #118 0x00007fffc79f5892 in _swrast_render_start () at /usr/lib64/dri/i965_dri.so #119 0x00007fffc7a23b27 in _swsetup_RenderStart () at /usr/lib64/dri/i965_dri.so #120 0x00007fffc79e3816 in run_render () at /usr/lib64/dri/i965_dri.so #121 0x00007fffc79d0992 in _tnl_run_pipeline () at /usr/lib64/dri/i965_dri.so #122 0x00007fffc79cff9c in _tnl_draw_prims () at /usr/lib64/dri/i965_dri.so #123 0x00007fffc7b6f55c in brw_draw_prims () at /usr/lib64/dri/i965_dri.so #124 0x00007fffc79b75cc in vbo_exec_vtx_flush () at /usr/lib64/dri/i965_dri.so #125 0x00007fffc799de3c in vbo_exec_FlushVertices_internal () at /usr/lib64/dri/i965_dri.so #126 0x00007fffc79b43f3 in vbo_exec_FlushVertices () at /usr/lib64/dri/i965_dri.so #127 0x00007fffc78bfcd2 in _mesa_set_enablei () at /usr/lib64/dri/i965_dri.so #128 0x00007fffc7a2e254 in _mesa_meta_begin () at /usr/lib64/dri/i965_dri.so #129 0x00007fffc7bd2feb in brw_meta_updownsample () at /usr/lib64/dri/i965_dri.so #130 0x00007fffc7c2b149 in intel_miptree_updownsample () at /usr/lib64/dri/i965_dri.so #131 0x00007fffc7c29c75 in intel_map_renderbuffer () at /usr/lib64/dri/i965_dri.so #132 0x00007fffc7a001d1 in map_attachment () at /usr/lib64/dri/i965_dri.so #133 0x00007fffc7a008e3 in _swrast_map_renderbuffers () at /usr/lib64/dri/i965_dri.so #134 0x00007fffc79f5892 in _swrast_render_start () at /usr/lib64/dri/i965_dri.so #135 0x00007fffc7a23b27 in _swsetup_RenderStart () at /usr/lib64/dri/i965_dri.so #136 0x00007fffc79e3816 in run_render () at /usr/lib64/dri/i965_dri.so #137 0x00007fffc79d0992 in _tnl_run_pipeline () at /usr/lib64/dri/i965_dri.so #138 0x00007fffc79cff9c in _tnl_draw_prims () at /usr/lib64/dri/i965_dri.so #139 0x00007fffc7b6f55c in brw_draw_prims () at /usr/lib64/dri/i965_dri.so ---Type to continue, or q to quit--- #140 0x00007fffc79b75cc in vbo_exec_vtx_flush () at /usr/lib64/dri/i965_dri.so #141 0x00007fffc799de3c in vbo_exec_FlushVertices_internal () at /usr/lib64/dri/i965_dri.so #142 0x00007fffc79b43f3 in vbo_exec_FlushVertices () at /usr/lib64/dri/i965_dri.so #143 0x00007fffc78bfcd2 in _mesa_set_enablei () at /usr/lib64/dri/i965_dri.so #144 0x00007fffc7a2e254 in _mesa_meta_begin () at /usr/lib64/dri/i965_dri.so #145 0x00007fffc7bd2feb in brw_meta_updownsample () at /usr/lib64/dri/i965_dri.so #146 0x00007fffc7c2b149 in intel_miptree_updownsample () at /usr/lib64/dri/i965_dri.so #147 0x00007fffc7c29c75 in intel_map_renderbuffer () at /usr/lib64/dri/i965_dri.so #148 0x00007fffc7a001d1 in map_attachment () at /usr/lib64/dri/i965_dri.so #149 0x00007fffc7a008e3 in _swrast_map_renderbuffers () at /usr/lib64/dri/i965_dri.so #150 0x00007fffc79f5892 in _swrast_render_start () at /usr/lib64/dri/i965_dri.so #151 0x00007fffc7a23b27 in _swsetup_RenderStart () at /usr/lib64/dri/i965_dri.so #152 0x00007fffc79e3816 in run_render () at /usr/lib64/dri/i965_dri.so #153 0x00007fffc79d0992 in _tnl_run_pipeline () at /usr/lib64/dri/i965_dri.so #154 0x00007fffc79cff9c in _tnl_draw_prims () at /usr/lib64/dri/i965_dri.so #155 0x00007fffc7b6f55c in brw_draw_prims () at /usr/lib64/dri/i965_dri.so #156 0x00007fffc79b75cc in vbo_exec_vtx_flush () at /usr/lib64/dri/i965_dri.so #157 0x00007fffc799de3c in vbo_exec_FlushVertices_internal () at /usr/lib64/dri/i965_dri.so #158 0x00007fffc79b43f3 in vbo_exec_FlushVertices () at /usr/lib64/dri/i965_dri.so #159 0x00007fffc78bf65d in _mesa_set_enable () at /usr/lib64/dri/i965_dri.so #160 0x00007ffff700cfd3 in opengl_renderer::set_polygon_offset(bool, float) (this=, on=, offset=) at libinterp/corefcn/gl-render.cc:2917 #161 0x00007ffff700fc37 in opengl_renderer::draw_axes_planes(axes::properties const&) (this=this@entry=0x7fffffffabe0, props=...) at libinterp/corefcn/gl-render.cc:904 #162 0x00007ffff7014362 in opengl_renderer::draw_axes(axes::properties const&) (this=0x7fffffffabe0, props=...) at libinterp/corefcn/gl-render.cc:1474 #163 0x00007ffff700d625 in opengl_renderer::draw(graphics_object const&, bool) (this=this@entry=0x7fffffffabe0, go=..., toplevel=toplevel@entry=true) at libinterp/corefcn/gl-render.cc:589 #164 0x00007ffff7b01121 in opengl_selector::draw(graphics_object const&, bool) (this=0x7fffffffabe0, go=..., toplevel=) at libgui/graphics/gl-select.cc:140 #165 0x00007ffff7b00b71 in opengl_selector::select(graphics_object const&, int, int, int) (this=this@entry=0x7fffffffabe0, ax=..., x=231, y=195, flags=flags@entry=0) at libgui/graphics/gl-select.cc:79 #166 0x00007ffff7ada211 in QtHandles::GLCanvas::selectFromAxes(graphics_object const&, QPoint const&) (this=0x837720, ax=..., pt=...) at libgui/graphics/GLCanvas.cc:99 #167 0x00007ffff7ac7f5f in QtHandles::Canvas::select_object(graphics_object, QMouseEvent*, graphics_object&, gr---Type to continue, or q to quit--- aphics_object&) (this=this@entry=0x837748, obj=..., event=event@entry=0x7fffffffb750, currentObj=..., axesObj=...) at libgui/graphics/Canvas.cc:407 #168 0x00007ffff7ac8ae2 in QtHandles::Canvas::canvasMouseMoveEvent(QMouseEvent*) (this=0x837748, event=0x7fffffffb750) at libgui/graphics/Canvas.cc:508 #169 0x00007ffff54bb340 in QWidget::event(QEvent*) () at /lib64/libQtGui.so.4 #170 0x00007ffff5fc3cc1 in QGLWidget::event(QEvent*) () at /lib64/libQtOpenGL.so.4 #171 0x00007ffff54673ac in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /lib64/libQtGui.so.4 #172 0x00007ffff546e3c6 in QApplication::notify(QObject*, QEvent*) () at /lib64/libQtGui.so.4 #173 0x00007ffff4f3af1d in QCoreApplication::notifyInternal(QObject*, QEvent*) () at /lib64/libQtCore.so.4 #174 0x00007ffff546d9cd in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer&, bool) () at /lib64/libQtGui.so.4 #175 0x00007ffff54e5a1b in QETWidget::translateMouseEvent(_XEvent const*) () at /lib64/libQtGui.so.4 #176 0x00007ffff54e43bd in QApplication::x11ProcessEvent(_XEvent*) () at /lib64/libQtGui.so.4 #177 0x00007ffff550d489 in x11EventSourceDispatch(_GSource*, int (*)(void*), void*) () at /lib64/libQtGui.so.4 #178 0x00007fffeb628a8a in g_main_context_dispatch () at /lib64/libglib-2.0.so.0 #179 0x00007fffeb628e20 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0 #180 0x00007fffeb628ecc in g_main_context_iteration () at /lib64/libglib-2.0.so.0 #181 0x00007ffff4f6b4ce in QEventDispatcherGlib::processEvents(QFlags) () at /lib64/libQtCore.so.4 #182 0x00007ffff550d626 in QGuiEventDispatcherGlib::processEvents(QFlags) () at /lib64/libQtGui.so.4 #183 0x00007ffff4f39791 in QEventLoop::processEvents(QFlags) () at /lib64/libQtCore.so.4 #184 0x00007ffff4f39b05 in QEventLoop::exec(QFlags) () at /lib64/libQtCore.so.4 #185 0x00007ffff4f3f6a9 in QCoreApplication::exec() () at /lib64/libQtCore.so.4 #186 0x00007ffff7a485d4 in octave_start_gui(int, char**, bool) (argc=11, argv=0x7fffffffc428, start_gui=) at libgui/src/octave-gui.cc:198 #187 0x00007fffecfdc700 in __libc_start_main () at /lib64/libc.so.6 #188 0x0000000000400c39 in _start () (gdb)