Seems like failure to init SDL device is not being properly propagated and something on the higher level keeps pushing commands to the (non-existent?) audio thread.
Paging also [Link Removed] and [Link Removed] for visibility.
1. Have any project (a template one, or QAGame)
2. Run on Ubuntu (with pulse audio, which is the default)
pasuspender – Engine/Binaries/UE4Editor Project -game -windowed -resx=1280 -resy=720
3. Observe the crash due to audio thread not catching up
[2019.05.16-22.22.47:626][ 1]LogAudio: Warning: Waited 36.180183ms for audio thread.
[2019.05.16-22.22.47:662][ 1]LogAudio: Warning: Waited 72.216385ms for audio thread.
[2019.05.16-22.22.47:699][ 1]LogAudio: Warning: Waited 109.195328ms for audio thread.
Assertion failed: CommandBuffers[NextIndex].SourceCommandQueue.Num() == 0 [Link Removed] [Line: 300]
Signal 11 caught.
Malloc Size=65538 LargeMemoryPoolOffset=65554
CommonUnixCrashHandler: Signal=11
Malloc Size=65535 LargeMemoryPoolOffset=131119
Malloc Size=569136 LargeMemoryPoolOffset=700272
[2019.05.16-22.22.47:804][ 1]LogCore: Error: appError called: Assertion failed: CommandBuffers[NextIndex].SourceCommandQueue.Num() == 0 [Link Removed] [Line: 300]
[2019.05.16-22.22.47:807][ 1]LogCore: === Critical error: ===
Unhandled Exception: SIGSEGV: invalid attempt to read memory at address 0x000000000000235f
[2019.05.16-22.22.47:808][ 1]LogCore: Assertion failed: CommandBuffers[NextIndex].SourceCommandQueue.Num() == 0 [Link Removed] [Line: 300]
0x00007f6469cc5ca0 libUE4Editor-Engine.so!FAudioCommandFence::Wait(bool) const [/home/rcl/PerforcePlus/RCL_Kbm_CaseSens-4.22/Engine/Source/Runtime/Engine/Private/AudioThread.cpp:484]
0x00007f6469c9ad28 libUE4Editor-Engine.so!FAudioDeviceManager::UpdateActiveAudioDevices(bool) [/home/rcl/PerforcePlus/RCL_Kbm_CaseSens-4.22/Engine/Source/Runtime/Engine/Private/AudioDeviceManager.cpp:547]
0x00007f646a0b2eaa libUE4Editor-Engine.so!UGameEngine::Tick(float, bool) [/home/rcl/PerforcePlus/RCL_Kbm_CaseSens-4.22/Engine/Source/Runtime/Engine/Private/GameEngine.cpp:1499]
0x000000000023f204 UE4Editor!FEngineLoop::Tick() [/home/rcl/PerforcePlus/RCL_Kbm_CaseSens-4.22/Engine/Source/Runtime/Launch/Private/LaunchEngineLoop.cpp:3961]
0x0000000000249d33 UE4Editor!GuardedMain(char16_t const*) [/home/rcl/PerforcePlus/RCL_Kbm_CaseSens-4.22/Engine/Source/Runtime/Launch/Private/Launch.cpp:170]
0x00007f64633a9149 libUE4Editor-UnixCommonStartup.so!CommonUnixMain(int, char*, int [Image Removed](char16_t const)) [/home/rcl/PerforcePlus/RCL_Kbm_CaseSens-4.22/Engine/Source/Runtime/Unix/UnixCommonStartup/Private/UnixCommonStartup.cpp:243]
0x00007f6462a2eb97 libc.so.6!__libc_start_main(+0xe6)
0x0000000000231029 UE4Editor!_start()
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There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-74749 in the post.
| 7 |
| Component | UE - Platform - Linux |
|---|---|
| Affects Versions | 4.22.1 |
| Target Fix | 4.24 |
| Created | May 16, 2019 |
|---|---|
| Resolved | Oct 30, 2019 |
| Updated | Nov 20, 2019 |