Running game then crash at MarkCompilationComplete

Development Rendering
, ,
1

Just start running package game in Windows, then crash.

Crashes.zip(151 KB)

2

Steps to Reproduce

void MarkCompilationComplete(const FMaterialPSOPrecacheParams& Params, uint32 RequestLifecycleID)
{
    FRWScopeLock WriteLock(RWLock, SLT_Write);
    FPrecacheData* FindResult = MaterialPSORequestData.Find(Params);
    if (FindResult && RequestLifecycleID == LifecycleID)
    {
       verify(!CheckCompilingPSOs(*FindResult, false /*bBoostPriority*/));
    }
}

Failed at `verify(!CheckCompilingPSOs(*FindResult, false /*bBoostPriority*/));`

crash dump in attachment

3

Hi,

thanks for reaching out. Hitting the assert in MarkCompilationComplete has been reported by some other UE licensees as well in these threads and is likely caused by a race condition:

[Content removed]

[Content removed]

[Content removed] (you can translate this to English by right-clicking in Chrome)

There is also a bug report under https://issues.unrealengine.com/issue/UE-288175.

From those last two cases, it seems that a possible workaround is to comment out the verify statement in CL 42765782 (after applying that commit). Could you try that and see if it prevents the crash?

Thanks,

Sam

4

Thank you for recommendations. I will try it later on.

5

No problem, please let me know if you have further questions.

Thanks,

Sam