elusian commented 11 months ago

Summary

Conky can load and execute functions from a user provided lua file. This is commonly used together with cairo to draw freely inside the conky window.

After last update, loading a scripts that imports cairo causes a segfault during startup. Specifically, this does not require cairo to be used, only

require 'cairo'

at the top of the script is necessary

Steps to reproduce

Create the required configs

-- conky_test_draw.lua
require 'cairo'


-- conky_test.conf
conky.config = {
alignment = 'top_left',
background = false,
border_width = 1,
cpu_avg_samples = 2,
default_color = 'white',
default_outline_color = 'white',
default_shade_color = 'white',
double_buffer = true,
draw_borders = false,
draw_graph_borders = true,
draw_outline = false,
draw_shades = false,
extra_newline = false,
font = 'DejaVu Sans Mono:size=12',
gap_x = 60,
gap_y = 60,
minimum_height = 10,
minimum_width = 10,
net_avg_samples = 2,
no_buffers = true,
out_to_console = false,
out_to_ncurses = false,
out_to_stderr = false,
out_to_x = true,
own_window = true,
own_window_class = 'Conky',
own_window_type = 'desktop',
show_graph_range = false,
show_graph_scale = false,
stippled_borders = 0,
update_interval = 1.0,
uppercase = false,
use_spacer = 'none',
use_xft = true,

lua_load = '/path/to/conky_draw_test.lua',

};

conky.text = [[ test successful ]]

2. Execute the config

conky -c conky_test.lua


### Expected result

conky window with `test successful` in it

### Actual result

Segfault

0 0x00007ffff7c7224f in luaH_get () from /usr/lib/liblua.so.5.3

1 0x00007ffff7c72a59 in luaH_set () from /usr/lib/liblua.so.5.3

2 0x00007ffff7c63225 in lua_rawset () from /usr/lib/liblua.so.5.3

3 0x00007ffff7fb3d0e in set_ubox (L=0x5555557ab5b8) at /home/build/YPKG/root/conky/build/conky-1.19.5/3rdparty/toluapp/src/lib/tolua_map.c:126

4 mapinheritance (L=0x5555557ab5b8, name=, base=) at /home/build/YPKG/root/conky/build/conky-1.19.5/3rdparty/toluapp/src/lib/tolua_map.c:151

5 0x00007ffff7fb4475 in tolua_cclass (L=0x5555557ab5b8, lname=0x7ffff7fb8112 "cairo_matrix_t", name=0x7ffff7fb8112 "cairo_matrix_t", base=0x7ffff7fbafff "", col=0x0)

at /home/build/YPKG/root/conky/build/conky-1.19.5/3rdparty/toluapp/src/lib/tolua_map.c:584

6 0x00007ffff7fb0b7b in tolua_cairo_open (tolua_S=0x5555557ab5b8) at /home/build/YPKG/root/conky/build/conky-1.19.5/solusBuildDir/lua/libcairo.c:9552

7 0x00007ffff7c67d1f in luaD_precall () from /usr/lib/liblua.so.5.3

8 0x00007ffff7c6809b in luaD_callnoyield () from /usr/lib/liblua.so.5.3

9 0x00007ffff7c635c9 in lua_callk () from /usr/lib/liblua.so.5.3

10 0x00007ffff7c84d2c in ll_require () from /usr/lib/liblua.so.5.3

11 0x00007ffff7c67d1f in luaD_precall () from /usr/lib/liblua.so.5.3

12 0x00007ffff7c75231 in luaV_execute () from /usr/lib/liblua.so.5.3

13 0x00007ffff7c680d8 in luaD_callnoyield () from /usr/lib/liblua.so.5.3

14 0x00007ffff7c6745f in luaD_rawrunprotected () from /usr/lib/liblua.so.5.3

15 0x00007ffff7c6844b in luaD_pcall () from /usr/lib/liblua.so.5.3

16 0x00007ffff7c6368a in lua_pcallk () from /usr/lib/liblua.so.5.3

17 0x00005555555ba9a0 in llua_load (script=) at /home/build/YPKG/root/conky/build/conky-1.19.5/src/llua.cc:212

18 0x00005555555bb4ad in (anonymous namespace)::lua_load_setting::lua_setter (this=, l=..., init=) at /usr/include/c++/12/bits/basic_string.h:233

19 0x00005555555b7bc2 in conky::priv::config_setting_base::process_setting (l=..., init=init@entry=true) at /home/build/YPKG/root/conky/build/conky-1.19.5/src/setting.cc:197

20 0x00005555555b88e0 in conky::set_config_settings (l=...) at /home/build/YPKG/root/conky/build/conky-1.19.5/src/setting.cc:284

21 0x000055555557ec89 in initialisation (argc=argc@entry=3, argv=argv@entry=0x7fffffffde58) at /usr/include/c++/12/bits/unique_ptr.h:191

22 0x000055555556c79f in main (argc=3, argv=0x7fffffffde58) at /home/build/YPKG/root/conky/build/conky-1.19.5/src/main.cc:351


### Environment

- [X] Is system up to date?

### Repo

Shannon (stable)

### Desktop Environment

Budgie

### System details

from `inxi`

System: Host: me Kernel: 6.5.7-259.current arch: x86_64 bits: 64 Desktop: Budgie v: 10.8.1 Distro: Solus 4.4 harmony Machine: Type: Portable System: Dell product: Inspiron 7559 v: 1.1.8 Battery: ID-1: BAT0 charge: 74.0 Wh (100.0%) condition: 74.0/74.0 Wh (100.0%) CPU: Info: quad core Intel Core i7-6700HQ [MT MCP] speed (MHz): avg: 800 min/max: 800/3500 Graphics: Device-1: Intel HD Graphics 530 driver: i915 v: kernel Device-2: NVIDIA GM107M [GeForce GTX 960M] driver: nvidia v: 535.113.01 Device-3: Sunplus Innovation Integrated_Webcam_HD driver: uvcvideo type: USB Display: x11 server: X.Org v: 1.20.14 with: Xwayland v: 23.1.2 driver: X: loaded: modesetting,nvidia dri: iris gpu: i915 resolution: 1920x1080 API: OpenGL v: 4.6.0 vendor: nvidia v: 535.113.01 renderer: NVIDIA GeForce GTX 960M/PCIe/SSE2



### Other comments

`lua-dbginfo` is installed, but apparently the backtrace cannot look inside `/usr/lib/liblua.so.5.3` (which should be inside the `lua` package)

Also, unless I'm looking at the wrong program, copy pasting from _About This System_ is a bit annoying (I can only select a line), so a different suggestion would be appreciated, if possible

algent-al commented 11 months ago

Any difference if you use require 'libcairo' instead of require 'cairo'?