[4.4] glibc pthread_mutex_lock Fatal Crash

[CalebMostyn]

Tested versions

4.4-stable-mono

System information

Ubuntu 24.04 (wayland, project targeting x11) - Vulkan 1.4.305 - Forward+ - Using Device #0: Intel - Intel(R) HD Graphics 630 (KBL GT2)

Issue description

Exported project unexpectedly crashed with an error message about glibc, about 10 minutes after the program was launched. This is the first time I've seen this specific error after likely several hundred hours of uptime. Seemed unrelated to anything actively being done, although this project does use C# scripting with potentially multiple C# library threads running in the background, so I won't discount the possibility it could've been related to that. Exact same error message as this issue from a year ago that was seen on 4.2, seemingly on a project not doing anything with threading.

Fatal glibc error: pthread_mutex_lock.c:94 (___pthread_mutex_lock): assertion failed: mutex->__data.__owner == 0

Steps to reproduce

Again, I have no context for why this happened, but I would assume this had nothing to do with the actual project itself. I have seen a very frequent crash reported from x11 that appears to have been fixed for 4.5, but this seems unrelated.

Minimal reproduction project (MRP)

N/A

[AThousandShips]

Can you please test in 4.4.1 to make sure this hasn't already been fixed

[CalebMostyn]

Apologies, that is the version this was built with - 4.4.1-stable-mono.

[CalebMostyn]

Scratch that again, development appears to have always been in 4.4.1 but a bug in the build process was targeting 4.4 instead. I think an upgrade to 4.5 will happen before fixing that, so I suppose ignore this unless otherwise seen again.