Updating notofonts destabilizes and crashes app_server

[KapiX]

You can see the font change, Desktop getting laggy and then crash entirely.

No backtrace because CLI debugger is unusable, see ​https://github.com/haikuports/haikuports/issues/4987

[KapiX]

UX after updating fonts

[X512]

What are exact steps to reproduce crash?

[KapiX]

I think removing any font package that is currently used would crash app_server, but you could rightly claim that's unsupported.

Having a crash during a regular update is not great though.

To reproduce:

1. Run pkgman full-sync or SoftwareUpdater.
2. Cross your fingers that notofonts are part of the update.
3. Do the update.
4. Watch the app_server crash.

[vidrep]

My system didn't crash, but all the text went "haywire" after the update, including menu item titles. After a reboot it was OK again.

[diver]

Looks like a dupe of #11412.

[X512]

In #11412 there are no crash.

[waddlesplash]

IMHO this is actually a packagefs bug, one that I have seen when updating other applications too: packagefs just "disconnects" memory-mapped files, it appears, causing random crashes and the like whenever their memory is accessed and it is no longer what it was before.

[pulkomandy]

Well, that problem was already there before packagefs and would trigger if you, for example, used jam @update on your running system. So I'd say it's not only packagefs, at least, but possibly a larger issue in the vfs.

[bitigchi]

Not reproducible with hrev54154+76. Fonts updated seamlessly.

[korli]

should be fixed after hrev57721