MacOS Crash: [com.mitchellh.ghostty:io_thread] error during resize err=error.OutOfMemory

[pkazmier]

Tonight Ghostty crashed on me. Fortunately, I've been tailing logs in WezTerm, so I was able to see the error message:

2025-01-01 19:12:26.312166-0500 0x3f49e8   Error       0x0                  23051  0    ghostty: [com.mitchellh.ghostty:io_thread] error during resize err=error.OutOfMemory
2025-01-01 19:12:26.698076-0500 0x4607bf   Error       0x0                  64592  0    ghostty: [com.mitchellh.ghostty:sentry] crash report written to disk path=/Users/kaz/.local/state/ghostty/crash/1a4bb539-d603-4138-bdda-fc758ae4a836.ghosttycrash

I also submitted the crash report via Sentry CLI based on the instructions provided in README:

Envelope from file /Users/kaz/.local/state/ghostty/crash/1a4bb539-d603-4138-bdda-fc758ae4a836.ghosttycrash dispatched

I'm sorry I don't have the version info handy (I use tip). I had copied the output, but forgot to paste, and unfortunately I've since updated as the pop-up showed up. But it was likely a version from earlier today as I update frequently. Here is the version output of the one I'm running now as the other details might be helpful:

Ghostty 1.0.2-main+94599102

Version
  - version: 1.0.2-main+94599102
  - channel: tip
Build Config
  - Zig version: 0.13.0
  - build mode : builtin.OptimizeMode.ReleaseFast
  - app runtime: apprt.Runtime.none
  - font engine: font.main.Backend.coretext
  - renderer   : renderer.Metal
  - libxev     : main.Backend.kqueue

The only other thing I can add is that I've been tracking memory usage as it seems a bit high. Mac Activity Monitor showed 1.4GB for Memory at the time if I recall. I know that number means nothing, but Real Memory was around 600MB. This would only have been for less than a day's worth of usage. At the time of the crash, I think I had just reloaded my configuration as I've been having way too much fun playing with shaders.

If it occurs again, I'll try and collect more info for you.

[pkazmier]

I had another crash today. Same error as before.

2025-01-05 16:54:39.522109-0500 0x2bb0ae   Error       0x0                  66922  0    ghostty: [com.mitchellh.ghostty:io_thread] error during resize err=error.OutOfMemory

Version of ghostty:

Ghostty 1.0.2-main+8f5f432a

Version
  - version: 1.0.2-main+8f5f432a
  - channel: tip
Build Config
  - Zig version: 0.13.0
  - build mode : builtin.OptimizeMode.ReleaseFast
  - app runtime: apprt.Runtime.none
  - font engine: font.main.Backend.coretext
  - renderer   : renderer.Metal
  - libxev     : main.Backend.kqueue

And I've submitted the crash report via Sentry:

Envelope from file /Users/kaz/.local/state/ghostty/crash/df6fd939-9c9b-422a-cbdd-6ff5868ca64d.ghosttycrash dispatched

Logs before and after the above error

2025-01-05 16:37:31.830883-0500 0x2bb0b1   Error       0x0                  66922  0    ghostty: [com.mitchellh.ghostty:stream] unimplemented OSC callback: terminal.osc.Command{ .end_of_command = terminal.osc.Command.Command__struct_20103{ .exit_code = 0 } }
2025-01-05 16:37:31.830907-0500 0x2bb0b1   Error       0x0                  66922  0    ghostty: [com.mitchellh.ghostty:stream] unimplemented OSC command: end_of_command
2025-01-05 16:54:37.788182-0500 0x22cba6   Info        0x0                  66922  0    ghostty: [com.mitchellh.ghostty:font_shared_grid_set] font regular: PragmataProMonoLiga Nerd Font
2025-01-05 16:54:37.789150-0500 0x22cba6   Info        0x0                  66922  0    ghostty: [com.mitchellh.ghostty:font_shared_grid_set] font bold: PragmataProMonoLiga Nerd Font Bold
2025-01-05 16:54:37.790271-0500 0x22cba6   Info        0x0                  66922  0    ghostty: [com.mitchellh.ghostty:font_shared_grid_set] font italic: PragmataProMonoLiga Nerd Font Italic
2025-01-05 16:54:37.791880-0500 0x22cba6   Info        0x0                  66922  0    ghostty: [com.mitchellh.ghostty:font_shared_grid_set] font bold_italic: PragmataProMonoLiga Nerd Font Bold Italic
2025-01-05 16:54:37.797281-0500 0x22cba6   Info        0x0                  66922  0    ghostty: [com.mitchellh.ghostty:font_shared_grid_set] font regular: PragmataProMonoLiga Nerd Font
2025-01-05 16:54:37.797966-0500 0x22cba6   Info        0x0                  66922  0    ghostty: [com.mitchellh.ghostty:font_shared_grid_set] font bold: PragmataProMonoLiga Nerd Font Bold
2025-01-05 16:54:37.799238-0500 0x22cba6   Info        0x0                  66922  0    ghostty: [com.mitchellh.ghostty:font_shared_grid_set] font italic: PragmataProMonoLiga Nerd Font Italic
2025-01-05 16:54:37.800262-0500 0x22cba6   Info        0x0                  66922  0    ghostty: [com.mitchellh.ghostty:font_shared_grid_set] font bold_italic: PragmataProMonoLiga Nerd Font Bold Italic
2025-01-05 16:54:37.804972-0500 0x2f5c31   Info        0x0                  66922  0    ghostty: [com.mitchellh.ghostty:metal] updating display link display id=22
2025-01-05 16:54:39.517280-0500 0x22cba6   Info        0x0                  66922  0    ghostty: [com.mitchellh.ghostty:font_shared_grid_set] font regular: PragmataProMonoLiga Nerd Font
2025-01-05 16:54:39.518092-0500 0x22cba6   Info        0x0                  66922  0    ghostty: [com.mitchellh.ghostty:font_shared_grid_set] font bold: PragmataProMonoLiga Nerd Font Bold
2025-01-05 16:54:39.519768-0500 0x22cba6   Info        0x0                  66922  0    ghostty: [com.mitchellh.ghostty:font_shared_grid_set] font italic: PragmataProMonoLiga Nerd Font Italic
2025-01-05 16:54:39.521023-0500 0x22cba6   Info        0x0                  66922  0    ghostty: [com.mitchellh.ghostty:font_shared_grid_set] font bold_italic: PragmataProMonoLiga Nerd Font Bold Italic
2025-01-05 16:54:39.522109-0500 0x2bb0ae   Error       0x0                  66922  0    ghostty: [com.mitchellh.ghostty:io_thread] error during resize err=error.OutOfMemory
2025-01-05 19:40:30.222868-0500 0x324326   Info        0x0                  42182  0    ghostty: [com.mitchellh.ghostty:default] ghostty version=1.0.2-main+8f5f432a
2025-01-05 19:40:30.222982-0500 0x324326   Info        0x0                  42182  0    ghostty: [com.mitchellh.ghostty:default] ghostty build optimize=ReleaseFast
2025-01-05 19:40:30.223025-0500 0x324326   Info        0x0                  42182  0    ghostty: [com.mitchellh.ghostty:default] runtime=apprt.Runtime.none
2025-01-05 19:40:30.223038-0500 0x324326   Info        0x0                  42182  0    ghostty: [com.mitchellh.ghostty:default] font_backend=font.main.Backend.coretext

[ksingh-ospo]

I've been seeing this issue every time I hit the resize button. The crash seems severe and affects all ghostty instances (windows). The only way to revive is to do a force-quit on the Mac. By then all work is lost. I'm able to launch a new window, however, it also becomes unresponsive immediately.

Sorry, I couldn't find any crash file like @pkazmier posted, so unable to provide any logs/dumps.

[taylrfnt]

Instructions for sending your sentry reports are on the repo README, try here:

https://github.com/ghostty-org/ghostty?tab=readme-ov-file#crash-reports

[taylrfnt]

Running a tip build with 1.0.2 seems... pretty out of date. Does a more recent tip build work? I can't reproduce this on the latest HEAD

[00-kat]

1.0.2 seems... pretty out of date

Also, OP posted this on January 6, so the discussion itself is pretty old, so it's not unexpected that 1.0.2 is quite an old version.

[00-kat]

This might be related to #5635; as @taylrfnt said try upgrade your copy.

If you know what you did before it crashed, or any reproduction steps, that would be helpful too.

[pkazmier]

I still have regular crashes with Ghostty with daily updates on tip. I just have not had time to help troubleshoot. If I have time this weekend, I’ll compile a debug build and see if I can reproduce. It has something to do with my obsession of constantly changing fonts and sizes.