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Native Linux UE 4.15 crash when quitting Editor

Hi, I have been using native Linux build of UE 4.14 on Ubuntu 14.04.

I am trying to upgrade my project to UE 4.15, but even the clean Unreal Engine 4.15 keeps crashing on my system when I quit the editor.

I cloned and built EpicGames/UnrealEngine repository, and just ran UE4Editor (as described in https://github.com/EpicGames/UnrealEngine/blob/release/Engine/Build/BatchFiles/Linux/README.md) and closed the initial project selection dialog. Then it crashed in FOpenGLDynamicRHI::Shutdown()

 [2017.03.02-11.08.17:066][551]Cmd: QUIT_EDITOR
 [2017.03.02-11.08.17:108][551]LogALAudio: Closing ALAudio device : OpenAL Soft
 [2017.03.02-11.08.17:150][551]LogExit: Preparing to exit.
 [2017.03.02-11.08.17:444][551]LogExit: Editor shut down
 [2017.03.02-11.08.17:444][551]LogTemp:Display: Removed shader map 0x00007F57906F3C00 from material 0x00007F5797648200
 [2017.03.02-11.08.17:444][551]LogTemp:Display: Removed shader map 0x00007F57906F3880 from material 0x00007F579072AA80
 [2017.03.02-11.08.17:444][551]LogTemp:Display: Removed shader map 0x00007F5787235C00 from material 0x00007F579072BB00
 [2017.03.02-11.08.17:444][551]LogTemp:Display: Removed shader map 0x00007F5787234E00 from material 0x00007F5787132C00
 [2017.03.02-11.08.17:444][551]LogTemp:Display: Removed shader map 0x00007F57866CAB00 from material 0x00007F57866B9C80
 [2017.03.02-11.08.17:444][551]LogTemp:Display: Removed shader map 0x00007F57866C6500 from material 0x00007F57862DFD00
 [2017.03.02-11.08.17:444][551]LogTemp:Display: Removed shader map 0x00007F5786203E80 from material 0x00007F57862DA480
 [2017.03.02-11.08.17:445][551]LogTemp:Display: Removed shader map 0x00007F57861FF880 from material 0x00007F57862D4900
 [2017.03.02-11.08.17:445][551]LogTemp:Display: Removed shader map 0x00007F57861FB600 from material 0x00007F5785F89280
 [2017.03.02-11.08.17:445][551]LogTemp:Display: Removed shader map 0x00007F57861F9A00 from material 0x00007F5785F86A00
 [2017.03.02-11.08.17:445][551]LogTemp:Display: Removed shader map 0x00007F5785DAC580 from material 0x00007F5785F7F500
 [2017.03.02-11.08.17:445][551]LogTemp:Display: Removed shader map 0x00007F5784CC3B80 from material 0x00007F5784FF0080
 [2017.03.02-11.08.17:445][551]LogTemp:Display: Removed shader map 0x00007F5784CBEB00 from material 0x00007F5784BD9580
 [2017.03.02-11.08.17:445][551]LogTemp:Display: Removed shader map 0x00007F5784CB9000 from material 0x00007F5784814780
 [2017.03.02-11.08.17:445][551]LogTemp:Display: Removed shader map 0x00007F5784800D00 from material 0x00007F578480E780
 [2017.03.02-11.08.17:445][551]LogTemp:Display: Removed shader map 0x00007F57847FB900 from material 0x00007F5784808900
 [2017.03.02-11.08.17:445][551]LogTemp:Display: Removed shader map 0x00007F578388F880 from material 0x00007F5783907700
 [2017.03.02-11.08.17:446][551]LogExit: Transaction tracking system shut down
 [2017.03.02-11.08.17:446][551]LogTemp:Display: Removed shader map 0x00007F57E13EE000 from material 0x00007F5803C8D080
 [2017.03.02-11.08.17:446][551]LogTemp:Display: Removed shader map 0x00007F58184E3500 from material 0x00007F57E1708F00
 [2017.03.02-11.08.17:446][551]LogTemp:Display: Removed shader map 0x00007F58184DEB80 from material 0x00007F57DE913680
 [2017.03.02-11.08.17:446][551]LogTemp:Display: Removed shader map 0x00007F57CEA3C700 from material 0x00007F57CE9C2E00
 [2017.03.02-11.08.17:446][551]LogTemp:Display: Removed shader map 0x00007F57CEA38480 from material 0x00007F57CD8BEE80
 [2017.03.02-11.08.17:446][551]LogTemp:Display: Removed shader map 0x00007F57CEA33080 from material 0x00007F57C64B9C80
 [2017.03.02-11.08.17:446][551]LogTemp:Display: Removed shader map 0x00007F57B35E3200 from material 0x00007F57A32CD680
 [2017.03.02-11.08.17:446][551]LogTemp:Display: Removed shader map 0x00007F57B35DE180 from material 0x00007F57835E8E00
 [2017.03.02-11.08.17:446][551]LogTemp:Display: Removed shader map 0x00007F57B35DA280 from material 0x00007F576ACE9A80
 [2017.03.02-11.08.17:446][551]LogTemp:Display: Removed shader map 0x00007F57CEA33780 from material 0x00007F57850F7D80
 [2017.03.02-11.08.17:446][551]LogTemp:Display: Removed shader map 0x00007F576AAD9000 from material 0x00007F57850FE200
 [2017.03.02-11.08.17:543][551]LogObj: Freed 0b from 0 cluster array pools.
 [2017.03.02-11.08.17:544][551]LogExit: Object subsystem successfully closed.
 [2017.03.02-11.08.17:544][551]LogHAL:Warning: Process (pid=3012) is still running - we will reap it in a waiter thread, but the thread handle is going to be leaked.
 [2017.03.02-11.08.17:545][551]LogHAL:Warning: Process (pid=3013) is still running - we will reap it in a waiter thread, but the thread handle is going to be leaked.
 [2017.03.02-11.08.17:545][551]LogHAL:Warning: Process (pid=3014) is still running - we will reap it in a waiter thread, but the thread handle is going to be leaked.
 [2017.03.02-11.08.17:545][551]LogHAL:Warning: Process (pid=3015) is still running - we will reap it in a waiter thread, but the thread handle is going to be leaked.
 [2017.03.02-11.08.17:545][551]LogHAL:Warning: Process (pid=3016) is still running - we will reap it in a waiter thread, but the thread handle is going to be leaked.
 [2017.03.02-11.08.17:545][551]LogHAL:Warning: Process (pid=3017) is still running - we will reap it in a waiter thread, but the thread handle is going to be leaked.
 [2017.03.02-11.08.17:545][551]LogHAL:Warning: Process (pid=3018) is still running - we will reap it in a waiter thread, but the thread handle is going to be leaked.
 [2017.03.02-11.08.17:545][551]LogHAL:Warning: Process (pid=3019) is still running - we will reap it in a waiter thread, but the thread handle is going to be leaked.
 [2017.03.02-11.08.17:618][551]LogCrashTracker:
 
 
 [2017.03.02-11.08.17:618][551]LogLinux: === Critical error: ===
 Unhandled Exception: SIGABRT: abort() called
 
 [2017.03.02-11.08.17:618][551]LogLinux: Fatal error!
 
 [Callstack]  00  0x00007f587ac55cdf  FLinuxPlatformStackWalk::CaptureStackBackTrace(unsigned long long*, unsigned int, void*)
 [Callstack]  01  0x00007f587ab391a6  FGenericPlatformStackWalk::StackWalkAndDump(char*, unsigned long, int, void*)
 [Callstack]  02  0x00007f587ac16a92  FLinuxCrashContext::CaptureStackTrace()
 [Callstack]  03  0x00007f5870c962a0  CommonLinuxCrashHandler(FGenericCrashContext const&)
 [Callstack]  04  0x00007f587ac1b155  PlatformCrashHandler(int, siginfo_t*, void*)
 [Callstack]  05  0x00007f5880934330  /lib/x86_64-linux-gnu/libpthread.so.0(+0x10330) [0x7f5880934330]
 [Callstack]  06  0x00007f58706fdc37  /lib/x86_64-linux-gnu/libc.so.6(gsignal+0x37) [0x7f58706fdc37]
 [Callstack]  07  0x00007f5870701028  /lib/x86_64-linux-gnu/libc.so.6(abort+0x148) [0x7f5870701028]
 [Callstack]  08  0x00007f587073a2a4  /lib/x86_64-linux-gnu/libc.so.6(+0x732a4) [0x7f587073a2a4]
 [Callstack]  09  0x00007f587074655e  /lib/x86_64-linux-gnu/libc.so.6(+0x7f55e) [0x7f587074655e]
 [Callstack]  10  0x00007f5854e23753  FOpenGLRHIState::CleanupResources()
 [Callstack]  11  0x00007f5854e1eb4f  FOpenGLDynamicRHI::Cleanup()
 [Callstack]  12  0x00007f5854e1e930  FOpenGLDynamicRHI::Shutdown()
 [Callstack]  13  0x00007f5874b53ce2  RHIExit()
 [Callstack]  14  0x00000000004257dc  FEngineLoop::Exit() [/home/chonhyon/project/test/UnrealEngine/Engine/Source/Runtime/Launch/Private/LaunchEngineLoop.cpp, line 319]
 [Callstack]  15  0x0000000000425c92  GuardedMain(wchar_t const*) [/home/chonhyon/project/test/UnrealEngine/Engine/Source/Runtime/Launch/Private/Launch.cpp, line 178]
 [Callstack]  16  0x00007f5870c97123  CommonLinuxMain(int, char**, int (*)(wchar_t const*))
 [Callstack]  17  0x00007f58706e8f45  /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf5) [0x7f58706e8f45]
 [Callstack]  18  0x00000000004152d4  Engine/Binaries/Linux/UE4Editor() [0x4152d4]
 

(mono version 3.2.8 clang 3.6 are used)

I tested it with clean UE 4.14 again, but it doesn't crash and terminats normally.

 [2017.03.02-11.03.51:761][  0]LogRHI: Initializing OpenGL RHI
 [2017.03.02-11.03.51:761][  0]LogRHI:   GL_VENDOR: NVIDIA Corporation
 [2017.03.02-11.03.51:761][  0]LogRHI:   GL_RENDERER: GeForce GTX 1070/PCIe/SSE2
 [2017.03.02-11.03.51:761][  0]LogRHI:   GL_VERSION: 4.3.0 NVIDIA 367.57
 [2017.03.02-11.03.51:761][  0]LogRHI:   GL_SHADING_LANGUAGE_VERSION: 4.30 NVIDIA via Cg compiler

I found that UE 4.15 is using GL version 4.3 as default, and also tried -opengl3, but it still crashed in the same point.

Product Version: UE 4.15
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asked Mar 02 '17 at 12:13 PM in Linux

avatar image

chonhyon_park
8 1 3

avatar image chonhyon_park Mar 03 '17 at 11:58 AM

Callstack in GDB

 *** Error in `/home/chonhyon/project/test/UnrealEngine/Engine/Binaries/Linux/UE4Editor-Linux-Debug': free(): invalid pointer: 0x00007fff9b0f6f00 ***
 
 Program received signal SIGABRT, Aborted.
 0x00007fffe1a56c37 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56
 56      ../nptl/sysdeps/unix/sysv/linux/raise.c: No such file or directory.
 (gdb) bt
 #0  0x00007fffe1a56c37 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56
 #1  0x00007fffe1a5a028 in __GI_abort () at abort.c:89
 #2  0x00007fffe1a932a4 in __libc_message (do_abort=do_abort@entry=1, fmt=fmt@entry=0x7fffe1ba16b0 "*** Error in `%s': %s: 0x%s ***\n") at ../sysdeps/posix/libc_fatal.c:175
 #3  0x00007fffe1a9f55e in malloc_printerr (ptr=<optimized out>, str=0x7fffe1b9d801 "free(): invalid pointer", action=1) at malloc.c:4996
 #4  _int_free (av=<optimized out>, p=<optimized out>, have_lock=0) at malloc.c:3840
 #5  0x00007fffb330aa05 in FOpenGLRHIState::CleanupResources (this=0x7fffb1a18018) at Runtime/OpenGLDrv/Public/OpenGLState.h:488
 #6  0x00007fffb33005ac in FOpenGLDynamicRHI::Cleanup (this=0x7fffb1a18000) at /home/chonhyon/project/test/UnrealEngine/Engine/Source/Runtime/OpenGLDrv/Private/OpenGLDevice.cpp:1514
 #7  0x00007fffb3300336 in FOpenGLDynamicRHI::Shutdown (this=0x7fffb1a18000) at /home/chonhyon/project/test/UnrealEngine/Engine/Source/Runtime/OpenGLDrv/Private/OpenGLDevice.cpp:1457
 #8  0x00007fffe933274f in RHIExit () at /home/chonhyon/project/test/UnrealEngine/Engine/Source/Runtime/RHI/Private/DynamicRHI.cpp:212
 #9  0x0000000000446c6a in RHIExitAndStopRHIThread () at /home/chonhyon/project/test/UnrealEngine/Engine/Source/Runtime/Launch/Private/LaunchEngineLoop.cpp:316
 #10 0x0000000000441673 in FEngineLoop::Exit (this=0x69ef98 <GEngineLoop>) at /home/chonhyon/project/test/UnrealEngine/Engine/Source/Runtime/Launch/Private/LaunchEngineLoop.cpp:2658

 

avatar image chonhyon_park Mar 03 '17 at 12:00 PM
 #11 0x00000000004413db in EngineExit () at /home/chonhyon/project/test/UnrealEngine/Engine/Source/Runtime/Launch/Private/Launch.cpp:73
 #12 0x0000000000441a41 in GuardedMain(wchar_t const*)::EngineLoopCleanupGuard::~EngineLoopCleanupGuard() (this=0x7fffffffd968)
     at /home/chonhyon/project/test/UnrealEngine/Engine/Source/Runtime/Launch/Private/Launch.cpp:107
 #13 0x0000000000441a19 in GuardedMain (CmdLine=0x4738a8 L"") at /home/chonhyon/project/test/UnrealEngine/Engine/Source/Runtime/Launch/Private/Launch.cpp:178
 #14 0x00007fffe256adab in CommonLinuxMain (argc=1, argv=0x7fffffffdd98, RealMain=0x4416e0 <GuardedMain(wchar_t const*)>)
     at /home/chonhyon/project/test/UnrealEngine/Engine/Source/Runtime/Linux/LinuxCommonStartup/Private/LinuxCommonStartup.cpp:236
 #15 0x0000000000448d8c in main (argc=1, argv=0x7fffffffdd98) at /home/chonhyon/project/test/UnrealEngine/Engine/Source/Runtime/Launch/Private/Linux/LaunchLinux.cpp:25
 (gdb)
 
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2 answers: sort voted first

I was able to duplicate this problem with a 4.16 build and tracked it down. The issue is that the FOpenGLHRIState object's ShaderParameters array is being allocated via the overridden FMemory-based new operator but is being freed via a standard delete operator. It looks like when clang is targeting to C++14, it may emit calls to void operator delete[](void *, size_t), but there is no overridden delete operator with this signature in ModuleBoilerplate.h. The following patch to add the missing signature fixed the problem for me:

 diff --git a/Engine/Source/Runtime/Core/Public/Modules/Boilerplate/ModuleBoilerplate.h b/Engine/Source/Runtime/Core/Public/Modules/Boilerplate/ModuleBoilerplate.h
 index 979f949..0d67d72 100644
 --- a/Engine/Source/Runtime/Core/Public/Modules/Boilerplate/ModuleBoilerplate.h
 +++ b/Engine/Source/Runtime/Core/Public/Modules/Boilerplate/ModuleBoilerplate.h
 @@ -32,7 +32,8 @@ class FFixedUObjectArray;
         void operator delete  ( void* Ptr )                                                 OPERATOR_DELETE_THROW_SPEC   { FMemory::Free( Ptr ); } \
         void operator delete[]( void* Ptr )                                                 OPERATOR_DELETE_THROW_SPEC   { FMemory::Free( Ptr ); } \
         void operator delete  ( void* Ptr, const std::nothrow_t& )                          OPERATOR_DELETE_NOTHROW_SPEC { FMemory::Free( Ptr ); } \
 -       void operator delete[]( void* Ptr, const std::nothrow_t& )                          OPERATOR_DELETE_NOTHROW_SPEC { FMemory::Free( Ptr ); }
 +       void operator delete[]( void* Ptr, const std::nothrow_t& )                          OPERATOR_DELETE_NOTHROW_SPEC { FMemory::Free( Ptr ); } \
 +       void operator delete[]( void* Ptr, size_t )                                         OPERATOR_DELETE_NOTHROW_SPEC { FMemory::Free( Ptr ); }
  
  class FFixedUObjectArray;
  
 
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answered May 29 '17 at 06:15 AM

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cyxxo
26 2 1

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Could you run the editor under gdb, exit it, wait it to crash, get the callstack with "bt" and attach it here?

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answered Mar 02 '17 at 08:30 PM

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RCL STAFF
2.7k 59 6 88

avatar image chonhyon_park Mar 06 '17 at 06:59 PM

Thank you. I attached the callstack in GDB.

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