Segfault in `_glfwGetMonitorPosX11` during GLMakie precompile

[xvries]

Running into a segfault when precompiling GLMakie using X11 forwarding (headless server).

[32347] signal (11.1): Segmentation fault
in expression starting at /hpc/home/xvries/.julia/packages/Makie/rEu75/precompile/shared-precompile.jl:4
_glfwGetMonitorPosX11 at /hpc/home/xvries/.julia/artifacts/3643539f491c217e13c1595daad81dd1426fba07/lib/libglfw.so (unknown line)
GetMonitorPos at /hpc/home/xvries/.julia/packages/GLFW/wmoTL/src/glfw3.jl:529
MonitorProperties at /hpc/home/xvries/.julia/packages/GLMakie/z5T26/src/glwindow.jl:180
window_area at /hpc/home/xvries/.julia/packages/GLMakie/z5T26/src/events.jl:45
connect_screen at /hpc/home/xvries/.julia/packages/Makie/rEu75/src/interaction/events.jl:20
display_scene! at /hpc/home/xvries/.julia/packages/GLMakie/z5T26/src/screen.jl:413
unknown function (ip: 0x2aab01cd8629)
_jl_invoke at /cache/build/builder-amdci4-0/julialang/julia-release-1-dot-10/src/gf.c:2895 [inlined]
ijl_apply_generic at /cache/build/builder-amdci4-0/julialang/julia-release-1-dot-10/src/gf.c:3077
#Screen#45 at /hpc/home/xvries/.julia/packages/GLMakie/z5T26/src/screen.jl:428
Screen at /hpc/home/xvries/.julia/packages/GLMakie/z5T26/src/screen.jl:424
unknown function (ip: 0x2aaac8cdcf1c)
_jl_invoke at /cache/build/builder-amdci4-0/julialang/julia-release-1-dot-10/src/gf.c:2895 [inlined]
ijl_apply_generic at /cache/build/builder-amdci4-0/julialang/julia-release-1-dot-10/src/gf.c:3077
getscreen at /hpc/home/xvries/.julia/packages/Makie/rEu75/src/display.jl:427
#colorbuffer#1358 at /hpc/home/xvries/.julia/packages/Makie/rEu75/src/display.jl:465
colorbuffer at /hpc/home/xvries/.julia/packages/Makie/rEu75/src/display.jl:457 [inlined]
colorbuffer at /hpc/home/xvries/.julia/packages/Makie/rEu75/src/display.jl:457
unknown function (ip: 0x2aaac8cb2065)
_jl_invoke at /cache/build/builder-amdci4-0/julialang/julia-release-1-dot-10/src/gf.c:2895 [inlined]
ijl_apply_generic at /cache/build/builder-amdci4-0/julialang/julia-release-1-dot-10/src/gf.c:3077
jl_apply at /cache/build/builder-amdci4-0/julialang/julia-release-1-dot-10/src/julia.h:1982 [inlined]
do_call at /cache/build/builder-amdci4-0/julialang/julia-release-1-dot-10/src/interpreter.c:126
eval_value at /cache/build/builder-amdci4-0/julialang/julia-release-1-dot-10/src/interpreter.c:223
eval_stmt_value at /cache/build/builder-amdci4-0/julialang/julia-release-1-dot-10/src/interpreter.c:174 [inlined]
eval_body at /cache/build/builder-amdci4-0/julialang/julia-release-1-dot-10/src/interpreter.c:617
jl_interpret_toplevel_thunk at /cache/build/builder-amdci4-0/julialang/julia-release-1-dot-10/src/interpreter.c:775
jl_toplevel_eval_flex at /cache/build/builder-amdci4-0/julialang/julia-release-1-dot-10/src/toplevel.c:934
jl_toplevel_eval_flex at /cache/build/builder-amdci4-0/julialang/julia-release-1-dot-10/src/toplevel.c:877
ijl_toplevel_eval_in at /cache/build/builder-amdci4-0/julialang/julia-release-1-dot-10/src/toplevel.c:985
eval at ./boot.jl:385 [inlined]
include_string at ./loading.jl:2076
_jl_invoke at /cache/build/builder-amdci4-0/julialang/julia-release-1-dot-10/src/gf.c:2895 [inlined]
ijl_apply_generic at /cache/build/builder-amdci4-0/julialang/julia-release-1-dot-10/src/gf.c:3077
_include at ./loading.jl:2136
include at ./Base.jl:495
jfptr_include_46393.1 at /hpc/home/xvries/Desktop/julia-1.10.4/lib/julia/sys.so (unknown line)
_jl_invoke at /cache/build/builder-amdci4-0/julialang/julia-release-1-dot-10/src/gf.c:2895 [inlined]
ijl_apply_generic at /cache/build/builder-amdci4-0/julialang/julia-release-1-dot-10/src/gf.c:3077
jl_apply at /cache/build/builder-amdci4-0/julialang/julia-release-1-dot-10/src/julia.h:1982 [inlined]
jl_f__call_latest at /cache/build/builder-amdci4-0/julialang/julia-release-1-dot-10/src/builtins.c:812
include at /hpc/home/xvries/.julia/packages/GLMakie/z5T26/src/GLMakie.jl:1 [inlined]
macro expansion at /hpc/home/xvries/.julia/packages/GLMakie/z5T26/src/precompiles.jl:27 [inlined]
macro expansion at /hpc/home/xvries/.julia/packages/PrecompileTools/L8A3n/src/workloads.jl:78 [inlined]
macro expansion at /hpc/home/xvries/.julia/packages/GLMakie/z5T26/src/precompiles.jl:18 [inlined]
macro expansion at /hpc/home/xvries/.julia/packages/PrecompileTools/L8A3n/src/workloads.jl:140 [inlined]
top-level scope at /hpc/home/xvries/.julia/packages/GLMakie/z5T26/src/precompiles.jl:16
jl_toplevel_eval_flex at /cache/build/builder-amdci4-0/julialang/julia-release-1-dot-10/src/toplevel.c:925
jl_toplevel_eval_flex at /cache/build/builder-amdci4-0/julialang/julia-release-1-dot-10/src/toplevel.c:877
ijl_toplevel_eval_in at /cache/build/builder-amdci4-0/julialang/julia-release-1-dot-10/src/toplevel.c:985
eval at ./boot.jl:385 [inlined]
include_string at ./loading.jl:2076
_jl_invoke at /cache/build/builder-amdci4-0/julialang/julia-release-1-dot-10/src/gf.c:2895 [inlined]
ijl_apply_generic at /cache/build/builder-amdci4-0/julialang/julia-release-1-dot-10/src/gf.c:3077
_include at ./loading.jl:2136
include at ./Base.jl:495
jfptr_include_46393.1 at /hpc/home/xvries/Desktop/julia-1.10.4/lib/julia/sys.so (unknown line)
_jl_invoke at /cache/build/builder-amdci4-0/julialang/julia-release-1-dot-10/src/gf.c:2895 [inlined]
ijl_apply_generic at /cache/build/builder-amdci4-0/julialang/julia-release-1-dot-10/src/gf.c:3077
jl_apply at /cache/build/builder-amdci4-0/julialang/julia-release-1-dot-10/src/julia.h:1982 [inlined]
jl_f__call_latest at /cache/build/builder-amdci4-0/julialang/julia-release-1-dot-10/src/builtins.c:812
include at /hpc/home/xvries/.julia/packages/GLMakie/z5T26/src/GLMakie.jl:1
unknown function (ip: 0x2aaac8bfa495)
_jl_invoke at /cache/build/builder-amdci4-0/julialang/julia-release-1-dot-10/src/gf.c:2895 [inlined]
ijl_apply_generic at /cache/build/builder-amdci4-0/julialang/julia-release-1-dot-10/src/gf.c:3077
jl_apply at /cache/build/builder-amdci4-0/julialang/julia-release-1-dot-10/src/julia.h:1982 [inlined]
do_call at /cache/build/builder-amdci4-0/julialang/julia-release-1-dot-10/src/interpreter.c:126
eval_value at /cache/build/builder-amdci4-0/julialang/julia-release-1-dot-10/src/interpreter.c:223
eval_stmt_value at /cache/build/builder-amdci4-0/julialang/julia-release-1-dot-10/src/interpreter.c:174 [inlined]
eval_body at /cache/build/builder-amdci4-0/julialang/julia-release-1-dot-10/src/interpreter.c:617
jl_interpret_toplevel_thunk at /cache/build/builder-amdci4-0/julialang/julia-release-1-dot-10/src/interpreter.c:775
jl_toplevel_eval_flex at /cache/build/builder-amdci4-0/julialang/julia-release-1-dot-10/src/toplevel.c:934
jl_eval_module_expr at /cache/build/builder-amdci4-0/julialang/julia-release-1-dot-10/src/toplevel.c:215 [inlined]
jl_toplevel_eval_flex at /cache/build/builder-amdci4-0/julialang/julia-release-1-dot-10/src/toplevel.c:736
jl_toplevel_eval_flex at /cache/build/builder-amdci4-0/julialang/julia-release-1-dot-10/src/toplevel.c:877
ijl_toplevel_eval_in at /cache/build/builder-amdci4-0/julialang/julia-release-1-dot-10/src/toplevel.c:985
eval at ./boot.jl:385 [inlined]
include_string at ./loading.jl:2076
_jl_invoke at /cache/build/builder-amdci4-0/julialang/julia-release-1-dot-10/src/gf.c:2895 [inlined]
ijl_apply_generic at /cache/build/builder-amdci4-0/julialang/julia-release-1-dot-10/src/gf.c:3077
_include at ./loading.jl:2136
include at ./Base.jl:495 [inlined]
include_package_for_output at ./loading.jl:2222
jfptr_include_package_for_output_81013.1 at /hpc/home/xvries/Desktop/julia-1.10.4/lib/julia/sys.so (unknown line)
_jl_invoke at /cache/build/builder-amdci4-0/julialang/julia-release-1-dot-10/src/gf.c:2895 [inlined]
ijl_apply_generic at /cache/build/builder-amdci4-0/julialang/julia-release-1-dot-10/src/gf.c:3077
jl_apply at /cache/build/builder-amdci4-0/julialang/julia-release-1-dot-10/src/julia.h:1982 [inlined]
do_call at /cache/build/builder-amdci4-0/julialang/julia-release-1-dot-10/src/interpreter.c:126
eval_value at /cache/build/builder-amdci4-0/julialang/julia-release-1-dot-10/src/interpreter.c:223
eval_stmt_value at /cache/build/builder-amdci4-0/julialang/julia-release-1-dot-10/src/interpreter.c:174 [inlined]
eval_body at /cache/build/builder-amdci4-0/julialang/julia-release-1-dot-10/src/interpreter.c:617
jl_interpret_toplevel_thunk at /cache/build/builder-amdci4-0/julialang/julia-release-1-dot-10/src/interpreter.c:775
jl_toplevel_eval_flex at /cache/build/builder-amdci4-0/julialang/julia-release-1-dot-10/src/toplevel.c:934
jl_toplevel_eval_flex at /cache/build/builder-amdci4-0/julialang/julia-release-1-dot-10/src/toplevel.c:877
ijl_toplevel_eval_in at /cache/build/builder-amdci4-0/julialang/julia-release-1-dot-10/src/toplevel.c:985
eval at ./boot.jl:385 [inlined]
include_string at ./loading.jl:2076
include_string at ./loading.jl:2086 [inlined]
exec_options at ./client.jl:316
_start at ./client.jl:552
jfptr__start_82729.1 at /hpc/home/xvries/Desktop/julia-1.10.4/lib/julia/sys.so (unknown line)
_jl_invoke at /cache/build/builder-amdci4-0/julialang/julia-release-1-dot-10/src/gf.c:2895 [inlined]
ijl_apply_generic at /cache/build/builder-amdci4-0/julialang/julia-release-1-dot-10/src/gf.c:3077
jl_apply at /cache/build/builder-amdci4-0/julialang/julia-release-1-dot-10/src/julia.h:1982 [inlined]
true_main at /cache/build/builder-amdci4-0/julialang/julia-release-1-dot-10/src/jlapi.c:582
jl_repl_entrypoint at /cache/build/builder-amdci4-0/julialang/julia-release-1-dot-10/src/jlapi.c:731
main at /cache/build/builder-amdci4-0/julialang/julia-release-1-dot-10/cli/loader_exe.c:58
__libc_start_main at /lib64/libc.so.6 (unknown line)
unknown function (ip: 0x4010b8)
Allocations: 36508334 (Pool: 36485586; Big: 22748); GC: 57
ERROR: Failed to precompile GLMakie [e9467ef8-e4e7-5192-8a1a-b1aee30e663a] to "/hpc/home/xvries/.julia/compiled/v1.10/GLMakie/jl_RgbxIs".

Any idea on how to solve?

[SimonDanisch]

#/hpc/home/xvries/.julia/packages/GLFW/wmoTL/src/glfw3.jl:529
function GetMonitorPos(monitor::Monitor)
	x, y = Ref{Cint}(), Ref{Cint}()
	ccall((:glfwGetMonitorPos, libglfw), Cvoid, (Monitor, Ref{Cint}, Ref{Cint}), monitor, x, y)
	(x=x[], y=y[])
end

I guess Monitor is NULL here or something?

[xvries]

I did set:
ENV["DISPLAY"]=":0"

[SimonDanisch]

Well, doesn't mean Monitor cant be null.
If you have a chance to debug this, I'd check monitor.handle in the linked function:
https://github.com/JuliaGL/GLFW.jl/blob/master/src/glfw3.jl#L527-L531

[xvries]

Monitor.handle equals Ptr{Nothing} @0x0000000000000. So I guess its indeed null. Is this a problem in my X11 setup?

[SimonDanisch]

You can try to check for null and if null return (x=0, y=0) and see if that fixes it.

[xvries]

I tried but the segfault reappears in the GetMonitorPhysicalSize and after that in the GetVideoMode for that last one I don't know what would be the defaults :).

[SimonDanisch]

Hm, maybe you can fix it closer to the root of the issue?
E.g. check here for null:
https://github.com/MakieOrg/Makie.jl/blob/master/GLMakie/src/glwindow.jl#L177-L188
And then just insert some defaults for the properties.
I think we only need it for dpi/scalefactor, so the rest can be something like 0.
I guess for dpi as a default we could use something like 90