segfault at the start of the first stage

[omar-polo]

Taisei starts up fine and the menu works. However, it segfaults when trying to start a game.

I'm trying taisei 1.4 from the release tarball on OpenBSD 7.3-CURRENT. I've built it with

-Ddocs=disabled  -Dvfs_zip=disabled  -Dpackage_data=disabled  -Dinstall_macos_bundle=disabled  -Dinstall_relocatable=disabled -Ddefault_library=shared -Db_lto=false

Enabling lto doesn't change the behaviour.

I've also tried with a clean userdir (TAISEI_STORAGE_PATH=/tmp/foo taisei), still the same.

Here's the stacktrace, which unfortunately doesn't seem to be complete.

$ egdb taisei taisei.core
[...]
Core was generated by `taisei'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  0x00000b42b8814936 in cotask_entry (varg=0x76983f2fc5d0)
    at ../taisei-1.4/src/coroutine/cotask.c:366
366             CoTaskData data = { 0 };
[Current thread is 1 (process 121953)]
(gdb) bt
#0  0x00000b42b8814936 in cotask_entry (varg=0x76983f2fc5d0)
    at ../taisei-1.4/src/coroutine/cotask.c:366
#1  0x00000b42b892dbe7 in koishi_entry (co=0xb45252fbb00)
    at ../taisei-1.4/subprojects/koishi/src/fcontext/../fiber.h:68
#2  0x00000b42b892dbca in co_entry (tf=...)
    at ../taisei-1.4/subprojects/koishi/src/fcontext/fcontext.c:50
#3  0x00000b42b892de2f in make_fcontext ()
    at ../taisei-1.4/subprojects/koishi/src/fcontext/asm/make_x86_64_sysv_elf_gas.S:71
Backtrace stopped: Cannot access memory at address 0xb454fb37000

This is what taisei logs:

W: config>config_set: Unknown setting 'fullscreen_desktop_mode'
W: config>config_set: Unknown setting 'gamepad_axis_lr_free_sensitivity'
W: config>config_set: Unknown setting 'gamepad_axis_ud_free_sensitivity'
W: renderer/glcommon/opengl>glcommon_ext_texture_format_rg8_srgb: Extension not supported
W: renderer/glcommon/opengl>glcommon_ext_texture_format_etc1: Extension not supported
W: renderer/glcommon/opengl>glcommon_ext_texture_format_etc1_srgb: Extension not supported
W: renderer/glcommon/opengl>glcommon_ext_texture_format_pvrtc: Extension not supported
W: renderer/glcommon/opengl>glcommon_ext_texture_format_pvrtc2: Extension not supported
W: renderer/glcommon/opengl>glcommon_ext_texture_format_pvrtc_srgb: Extension not supported
W: renderer/glcommon/opengl>glcommon_ext_texture_format_atc: Extension not supported
W: renderer/glcommon/opengl>glcommon_ext_texture_format_fxt1: Extension not supported
taskmgr:global/2   W: resource/texture_loader/basisu>texture_loader_basisu_sanitize_levels: menu/mainmenubg: Mip level 2 dimensions are not multiples of 4 (450x300); number of levels reduced 11 -> 2
taskmgr:global/3   W: resource/texture_loader/basisu>texture_loader_basisu_sanitize_levels: abstract_brown: Mip level 1 dimensions are not multiples of 4 (600x762); number of levels reduced 11 -> 1
taskmgr:global/0   W: resource/texture_loader/basisu>texture_loader_basisu_sanitize_levels: marisa_bombbg: Mip level 2 dimensions are not multiples of 4 (480x262); number of levels reduced 11 -> 2
E: util/kvparser>parse_keyvalue_file_cb: VFS error: Node 'res/shader/global.pp' does not exist
E: resource>load_resource_finish: Failed to load postprocessing pipeline 'global' from 'res/shader/global.pp'
E: util/kvparser>parse_keyvalue_file_cb: VFS error: Node 'res/shader/viewport.pp' does not exist
E: resource>load_resource_finish: Failed to load postprocessing pipeline 'viewport' from 'res/shader/viewport.pp'
taskmgr:global/3   W: resource/texture_loader/basisu>texture_loader_basisu_sanitize_levels: stage1/snowlayer: Mip level 7 dimensions are not multiples of 4 (6x8); number of levels reduced 11 -> 7
taskmgr:global/1   W: resource/texture_loader/basisu>texture_loader_basisu_sanitize_levels: stage1/horizon: Mip level 2 dimensions are not multiples of 4 (910x364); number of levels reduced 12 -> 2
taskmgr:global/1   E: pixmap/fileformats/internal>px_internal_load: Read 1441767 bytes, expected 5299840
taskmgr:global/1   E: resource/texture_loader/basisu_cache>texture_loader_basisu_load_cached: cache/textures/basisu-e44e64aa2e5dffe6972bb0cd665b45c54020ef20616676a6368e3642e1921c20-88641/0_0_BC7_RGBA_0: Failed to deserialize cached pixmap

Let me know if I can provide more info. Thanks!

[omar-polo]

Found the issue: on OpenBSD the mmap(2)' MAP_STACK flag is required. I'll cook a diff for koishi and send the PR there.