I am on the release branch, currently tagged as 4.10.0-preview-2. I have built Unreal Engine all right and am trying to run UE4Editor. I’m on Ubuntu 15.10, and I compiled the Unreal Engine with clang 3.6.2.
The issues arise at 35% loading.
First of all, I get an assertion failure in HLSLCC:
ShaderCompileWorker: ../../src/hlslcc_lib/symbol_table.cpp:167: void check_symbol_table(struct _mesa_symbol_table *): Assertion `sym2->hdr == hdr' failed.
But the ShaderCompileWorker remains in memory as a separate thread regardless of the assertion failure and seems to continue working. I’m not sure if this is related.
There is a crash in FreeInternal(). The relevant part of the code is here:
Runtime/Core/Public/HAL/MallocBinned.h
/**
* Releases memory back to the system. This is not protected from multi-threaded access and it's
* the callers responsibility to Lock AccessGuard before calling this.
*/
void FreeInternal( void* Ptr )
{
MEM_TIME(MemTime -= FPlatformTime::Seconds());
BINNED_DECREMENT_STATCOUNTER(CurrentAllocs);
UPTRINT BasePtr;
FPoolInfo* Pool = FindPoolInfo((UPTRINT)Ptr, BasePtr);
#if PLATFORM_IOS
if (Pool == NULL)
{
UE_LOG(LogMemory, Warning, TEXT("Attempting to free a pointer we didn't allocate!"));
return;
}
#endif
checkSlow(Pool);
checkSlow(Pool->GetBytes() != 0);
if( Pool->TableIndex < BinnedOSTableIndex )
In particular, Pool is NULL. Incidentally, there is a check for Pool being NULL, but it’s only checked if building for IOS.
This is the backtrace at the point of crash:
#0 FMallocBinned::FreeInternal (this=0x7ffff7f21010, Ptr=0x7fffac129b40) at Runtime/Core/Public/HAL/MallocBinned.h:636
#1 0x00007fffb5b5adb6 in operator delete (Ptr=0x7fffac119) at /home/sciabaz/programs/UnrealEngine/Engine/Source/Developer/ShaderFormatOpenGL/Private/ShaderFormatOpenGL.cpp:223
#2 0x00007fffb5b91f7b in SCBuffer::AddMember(glsl_type const*, ir_variable*) () from /home/sciabaz/programs/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-ShaderFormatOpenGL.so
#3 0x00007fffb5b8cf7f in ast_cbuffer_declaration::hir(exec_list*, _mesa_glsl_parse_state*) () from /home/sciabaz/programs/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-ShaderFormatOpenGL.so
#4 0x00007fffb5b837b1 in _mesa_ast_to_hir(exec_list*, _mesa_glsl_parse_state*) () from /home/sciabaz/programs/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-ShaderFormatOpenGL.so
#5 0x00007fffb5b82b4f in FHlslCrossCompilerContext::RunFrontend(char const**) () from /home/sciabaz/programs/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-ShaderFormatOpenGL.so
#6 0x00007fffb5b83005 in FHlslCrossCompilerContext::Run(char const*, char const*, FCodeBackend*, char**, char**) ()
from /home/sciabaz/programs/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-ShaderFormatOpenGL.so
#7 0x00007fffb5b5497d in CompileShader_Windows_OGL (Input=..., Output=..., WorkingDirectory=..., Version=GLSL_150)
at /home/sciabaz/programs/UnrealEngine/Engine/Source/Developer/ShaderFormatOpenGL/Private/OpenGLShaderCompiler.cpp:1370
#8 0x00007ffff479de83 in FShaderCompileThreadRunnable::CompileDirectlyThroughDll (this=0x125d820)
at /home/sciabaz/programs/UnrealEngine/Engine/Source/Runtime/Engine/Private/ShaderCompiler/ShaderCompiler.cpp:716
#9 0x00007ffff479e011 in FShaderCompileThreadRunnable::CompilingLoop (this=0x125d820) at /home/sciabaz/programs/UnrealEngine/Engine/Source/Runtime/Engine/Private/ShaderCompiler/ShaderCompiler.cpp:769
#10 0x00007ffff4797119 in FShaderCompileThreadRunnableBase::Run (this=0x125d820) at /home/sciabaz/programs/UnrealEngine/Engine/Source/Runtime/Engine/Private/ShaderCompiler/ShaderCompiler.cpp:385
#11 0x00007ffff6ffbf14 in FRunnableThreadPThread::Run (this=0x12368a0) at /home/sciabaz/programs/UnrealEngine/Engine/Source/Runtime/Core/Private/HAL/PThreadRunnableThread.cpp:26
#12 0x00007ffff7039fe0 in FRunnableThreadPThread::_ThreadProc (pThis=0x12368a0) at Runtime/Core/Private/HAL/PThreadRunnableThread.h:167
#13 0x00007ffff7bc26aa in start_thread (arg=0x7fffbcbab700) at pthread_create.c:333
#14 0x00007fffeb9ceeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
Having the above check for IOS to be always active, I now get another error, again with the binned memory allocator:
This time, in here:
FORCEINLINE FFreeMem* AllocateBlockFromPool(FPoolTable* Table, FPoolInfo* Pool, uint32 Alignment)
{
// Pick first available block and unlink it.
Pool->Taken++;
checkSlow(Pool->TableIndex < BinnedOSTableIndex); // if this is false, FirstMem is actually a size not a pointer
checkSlow(Pool->FirstMem);
checkSlow(Pool->FirstMem->NumFreeBlocks > 0);
checkSlow(Pool->FirstMem->NumFreeBlocks < PAGE_SIZE_LIMIT);
FFreeMem* Free = (FFreeMem*)((uint8*)Pool->FirstMem + --Pool->FirstMem->NumFreeBlocks * Table->BlockSize);
The value of Pool->FirstMem is 0x10000 which is not a pointer and hence another crash. The line in the beginning of the function hints at this:
checkSlow(Pool->TableIndex < BinnedOSTableIndex); // if this is false, FirstMem is actually a size not a pointer
which seems to be the case. Pool->TableIndex is 32770, and BinnedOSTableIndex is optimized out, so I can’t see this.
Stack trace at this point is:
#0 0x00007ffff700c21c in FMallocBinned::AllocateBlockFromPool (this=<optimized out>, Table=0x7ffff7f216b8, Pool=0x7fffac00e200, Alignment=<optimized out>) at Runtime/Core/Public/HAL/MallocBinned.h:601
#1 FMallocBinned::Malloc (this=0x7ffff7f21010, Size=<optimized out>, Alignment=16) at Runtime/Core/Public/HAL/MallocBinned.h:1021
#2 0x00007ffff709553e in FMemory::Realloc (Count=65536, Alignment=0, Original=<optimized out>) at /home/sciabaz/programs/UnrealEngine/Engine/Source/Runtime/Core/Private/HAL/UnrealMemory.cpp:61
#3 FHeapAllocator::ForAnyElementType::ResizeAllocation (NumElements=90, NumBytesPerElement=4, this=<optimized out>, PreviousNumElements=<optimized out>)
at Runtime/Core/Public/Containers/ContainerAllocationPolicies.h:344
#4 TArray<wchar_t, FDefaultAllocator>::AddUninitialized (this=<optimized out>, Count=<optimized out>) at Runtime/Core/Public/Containers/Array.h:1311
#5 FString::AppendChars (this=<optimized out>, Array=<optimized out>, Count=53) at Runtime/Core/Public/Containers/UnrealString.h:373
#6 FString::operator+= (this=<optimized out>, Str=<optimized out>) at Runtime/Core/Public/Containers/UnrealString.h:395
#7 DescribeSignal (Signal=<optimized out>, Info=0x7fffbcba90b0) at /home/sciabaz/programs/UnrealEngine/Engine/Source/Runtime/Core/Private/Linux/LinuxPlatformCrashContext.cpp:24
#8 0x00007ffff7095aee in CreateExceptionInfoString (Signal=11, Info=0x7fffbcba90b0) at /home/sciabaz/programs/UnrealEngine/Engine/Source/Runtime/Core/Private/Linux/LinuxPlatformCrashContext.cpp:105
#9 0x00007ffff7098e01 in ReportCrash (Context=...) at /home/sciabaz/programs/UnrealEngine/Engine/Source/Runtime/Core/Private/Linux/LinuxPlatformCrashContext.cpp:319
#10 0x0000000000435b3b in EngineCrashHandler (GenericContext=...) at /home/sciabaz/programs/UnrealEngine/Engine/Source/Runtime/Launch/Private/Linux/LaunchLinux.cpp:30
#11 0x00007ffff709d291 in PlatformCrashHandler (Signal=<optimized out>, Info=<optimized out>, Context=<optimized out>)
at /home/sciabaz/programs/UnrealEngine/Engine/Source/Runtime/Core/Private/Linux/LinuxPlatformCrashContext.cpp:439
#12 <signal handler called>
#13 __strcmp_sse2_unaligned () at ../sysdeps/x86_64/multiarch/strcmp-sse2-unaligned.S:29
#14 0x00007fffb5b926c4 in hash_table_find(hash_table*, void const*) () from /home/sciabaz/programs/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-ShaderFormatOpenGL.so
#15 0x00007fffb5ba081e in _mesa_symbol_table_find_symbol(_mesa_symbol_table*, int, char const*) () from /home/sciabaz/programs/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-ShaderFormatOpenGL.so
#16 0x00007fffb5b7e655 in glsl_symbol_table::get_variable(char const*) () from /home/sciabaz/programs/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-ShaderFormatOpenGL.so
#17 0x00007fffb5b8ce7c in ast_cbuffer_declaration::hir(exec_list*, _mesa_glsl_parse_state*) () from /home/sciabaz/programs/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-ShaderFormatOpenGL.so
#18 0x00007fffb5b837b1 in _mesa_ast_to_hir(exec_list*, _mesa_glsl_parse_state*) () from /home/sciabaz/programs/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-ShaderFormatOpenGL.so
#19 0x00007fffb5b82b4f in FHlslCrossCompilerContext::RunFrontend(char const**) () from /home/sciabaz/programs/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-ShaderFormatOpenGL.so
#20 0x00007fffb5b83005 in FHlslCrossCompilerContext::Run(char const*, char const*, FCodeBackend*, char**, char**) ()
from /home/sciabaz/programs/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-ShaderFormatOpenGL.so
#21 0x00007fffb5b5497d in CompileShader_Windows_OGL (Input=..., Output=..., WorkingDirectory=..., Version=GLSL_150)
at /home/sciabaz/programs/UnrealEngine/Engine/Source/Developer/ShaderFormatOpenGL/Private/OpenGLShaderCompiler.cpp:1370
#22 0x00007ffff479de83 in FShaderCompileThreadRunnable::CompileDirectlyThroughDll (this=0x125d780)
at /home/sciabaz/programs/UnrealEngine/Engine/Source/Runtime/Engine/Private/ShaderCompiler/ShaderCompiler.cpp:716
#23 0x00007ffff479e011 in FShaderCompileThreadRunnable::CompilingLoop (this=0x125d780) at /home/sciabaz/programs/UnrealEngine/Engine/Source/Runtime/Engine/Private/ShaderCompiler/ShaderCompiler.cpp:769
#24 0x00007ffff4797119 in FShaderCompileThreadRunnableBase::Run (this=0x125d780) at /home/sciabaz/programs/UnrealEngine/Engine/Source/Runtime/Engine/Private/ShaderCompiler/ShaderCompiler.cpp:385
#25 0x00007ffff6ffbf14 in FRunnableThreadPThread::Run (this=0x12368a0) at /home/sciabaz/programs/UnrealEngine/Engine/Source/Runtime/Core/Private/HAL/PThreadRunnableThread.cpp:26
#26 0x00007ffff703a080 in FRunnableThreadPThread::_ThreadProc (pThis=0x12368a0) at Runtime/Core/Private/HAL/PThreadRunnableThread.h:167
#27 0x00007ffff7bc26aa in start_thread (arg=0x7fffbcbab700) at pthread_create.c:333
#28 0x00007fffeb9ceeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
It seems that the crash happens after the shader compiler crashes (hash_table_find()) and then the crash handler crashes! So perhaps the assertion I mentioned at the top is not irrelevant.
Running the editor through valgrind, these errors are reported just before the crash:
==11981== Thread 9 ShaderCompiling:
==11981== Invalid write of size 4
==11981== at 0x53F3515: FMallocBinned::FreeInternal(void*) (MallocBinned.h:663)
==11981== by 0x46AB0DB5: operator delete(void*) (ShaderFormatOpenGL.cpp:223)
==11981== by 0x46AE7F7A: SCBuffer::AddMember(glsl_type const*, ir_variable*) (in /home/sciabaz/programs/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-ShaderFormatOpenGL.so)
==11981== by 0x46AE2F7E: ast_cbuffer_declaration::hir(exec_list*, _mesa_glsl_parse_state*) (in /home/sciabaz/programs/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-ShaderFormatOpenGL.so)
==11981== by 0x46AD97B0: _mesa_ast_to_hir(exec_list*, _mesa_glsl_parse_state*) (in /home/sciabaz/programs/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-ShaderFormatOpenGL.so)
==11981== by 0x46AD8B4E: FHlslCrossCompilerContext::RunFrontend(char const**) (in /home/sciabaz/programs/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-ShaderFormatOpenGL.so)
==11981== by 0x46AD9004: FHlslCrossCompilerContext::Run(char const*, char const*, FCodeBackend*, char**, char**) (in /home/sciabaz/programs/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-ShaderFormatOpenGL.so)
==11981== by 0x46AAA97C: CompileShader_Windows_OGL(FShaderCompilerInput const&, FShaderCompilerOutput&, FString const&, GLSLVersion) (OpenGLShaderCompiler.cpp:1370)
==11981== by 0x7FECE82: FShaderCompileThreadRunnable::CompileDirectlyThroughDll() (ShaderCompiler.cpp:716)
==11981== by 0x7FED010: FShaderCompileThreadRunnable::CompilingLoop() (ShaderCompiler.cpp:769)
==11981== by 0x7FE6118: FShaderCompileThreadRunnableBase::Run() (ShaderCompiler.cpp:385)
==11981== by 0x53C4F13: FRunnableThreadPThread::Run() (PThreadRunnableThread.cpp:26)
==11981== Address 0x42741d88 is 8 bytes after a block of size 32 alloc'd
==11981== at 0x4C2DB95: calloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==11981== by 0x46AE870F: hash_table_insert(hash_table*, void*, void const*) (in /home/sciabaz/programs/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-ShaderFormatOpenGL.so)
==11981== by 0x46AF6998: _mesa_symbol_table_add_symbol(_mesa_symbol_table*, int, char const*, void*) (in /home/sciabaz/programs/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-ShaderFormatOpenGL.so)
==11981== by 0x46AD4414: glsl_symbol_table::add_variable(ir_variable*) (in /home/sciabaz/programs/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-ShaderFormatOpenGL.so)
==11981== by 0x46AE2F12: ast_cbuffer_declaration::hir(exec_list*, _mesa_glsl_parse_state*) (in /home/sciabaz/programs/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-ShaderFormatOpenGL.so)
==11981== by 0x46AD97B0: _mesa_ast_to_hir(exec_list*, _mesa_glsl_parse_state*) (in /home/sciabaz/programs/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-ShaderFormatOpenGL.so)
==11981== by 0x46AD8B4E: FHlslCrossCompilerContext::RunFrontend(char const**) (in /home/sciabaz/programs/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-ShaderFormatOpenGL.so)
==11981== by 0x46AD9004: FHlslCrossCompilerContext::Run(char const*, char const*, FCodeBackend*, char**, char**) (in /home/sciabaz/programs/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-ShaderFormatOpenGL.so)
==11981== by 0x46AAA97C: CompileShader_Windows_OGL(FShaderCompilerInput const&, FShaderCompilerOutput&, FString const&, GLSLVersion) (OpenGLShaderCompiler.cpp:1370)
==11981== by 0x7FECE82: FShaderCompileThreadRunnable::CompileDirectlyThroughDll() (ShaderCompiler.cpp:716)
==11981== by 0x7FED010: FShaderCompileThreadRunnable::CompilingLoop() (ShaderCompiler.cpp:769)
==11981== by 0x7FE6118: FShaderCompileThreadRunnableBase::Run() (ShaderCompiler.cpp:385)
==11981==
==11981== Invalid write of size 8
==11981== at 0x53F351F: FMallocBinned::FreeInternal(void*) (MallocBinned.h:664)
==11981== by 0x46AB0DB5: operator delete(void*) (ShaderFormatOpenGL.cpp:223)
==11981== by 0x46AE7F7A: SCBuffer::AddMember(glsl_type const*, ir_variable*) (in /home/sciabaz/programs/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-ShaderFormatOpenGL.so)
==11981== by 0x46AE2F7E: ast_cbuffer_declaration::hir(exec_list*, _mesa_glsl_parse_state*) (in /home/sciabaz/programs/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-ShaderFormatOpenGL.so)
==11981== by 0x46AD97B0: _mesa_ast_to_hir(exec_list*, _mesa_glsl_parse_state*) (in /home/sciabaz/programs/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-ShaderFormatOpenGL.so)
==11981== by 0x46AD8B4E: FHlslCrossCompilerContext::RunFrontend(char const**) (in /home/sciabaz/programs/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-ShaderFormatOpenGL.so)
==11981== by 0x46AD9004: FHlslCrossCompilerContext::Run(char const*, char const*, FCodeBackend*, char**, char**) (in /home/sciabaz/programs/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-ShaderFormatOpenGL.so)
==11981== by 0x46AAA97C: CompileShader_Windows_OGL(FShaderCompilerInput const&, FShaderCompilerOutput&, FString const&, GLSLVersion) (OpenGLShaderCompiler.cpp:1370)
==11981== by 0x7FECE82: FShaderCompileThreadRunnable::CompileDirectlyThroughDll() (ShaderCompiler.cpp:716)
==11981== by 0x7FED010: FShaderCompileThreadRunnable::CompilingLoop() (ShaderCompiler.cpp:769)
==11981== by 0x7FE6118: FShaderCompileThreadRunnableBase::Run() (ShaderCompiler.cpp:385)
==11981== by 0x53C4F13: FRunnableThreadPThread::Run() (PThreadRunnableThread.cpp:26)
==11981== Address 0x42741d80 is 0 bytes after a block of size 32 alloc'd
==11981== at 0x4C2DB95: calloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==11981== by 0x46AE870F: hash_table_insert(hash_table*, void*, void const*) (in /home/sciabaz/programs/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-ShaderFormatOpenGL.so)
==11981== by 0x46AF6998: _mesa_symbol_table_add_symbol(_mesa_symbol_table*, int, char const*, void*) (in /home/sciabaz/programs/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-ShaderFormatOpenGL.so)
==11981== by 0x46AD4414: glsl_symbol_table::add_variable(ir_variable*) (in /home/sciabaz/programs/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-ShaderFormatOpenGL.so)
==11981== by 0x46AE2F12: ast_cbuffer_declaration::hir(exec_list*, _mesa_glsl_parse_state*) (in /home/sciabaz/programs/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-ShaderFormatOpenGL.so)
==11981== by 0x46AD97B0: _mesa_ast_to_hir(exec_list*, _mesa_glsl_parse_state*) (in /home/sciabaz/programs/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-ShaderFormatOpenGL.so)
==11981== by 0x46AD8B4E: FHlslCrossCompilerContext::RunFrontend(char const**) (in /home/sciabaz/programs/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-ShaderFormatOpenGL.so)
==11981== by 0x46AD9004: FHlslCrossCompilerContext::Run(char const*, char const*, FCodeBackend*, char**, char**) (in /home/sciabaz/programs/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-ShaderFormatOpenGL.so)
==11981== by 0x46AAA97C: CompileShader_Windows_OGL(FShaderCompilerInput const&, FShaderCompilerOutput&, FString const&, GLSLVersion) (OpenGLShaderCompiler.cpp:1370)
==11981== by 0x7FECE82: FShaderCompileThreadRunnable::CompileDirectlyThroughDll() (ShaderCompiler.cpp:716)
==11981== by 0x7FED010: FShaderCompileThreadRunnable::CompilingLoop() (ShaderCompiler.cpp:769)
==11981== by 0x7FE6118: FShaderCompileThreadRunnableBase::Run() (ShaderCompiler.cpp:385)
==11981==
valgrind: m_mallocfree.c:303 (get_bszB_as_is): Assertion 'bszB_lo == bszB_hi' failed.
valgrind: Heap block lo/hi size mismatch: lo = 68928, hi = 1.
This is probably caused by your program erroneously writing past the
end of a heap block and corrupting heap metadata. If you fix any
invalid writes reported by Memcheck, this assertion failure will
probably go away. Please try that before reporting this as a bug.
I ran the editor through valgrind with -ansimalloc as well with similar results:
==12536== Thread 9 ShaderCompiling:
==12536== Invalid read of size 8
==12536== at 0x540596F: FMallocAnsi::Free(void*) (MallocAnsi.h:118)
==12536== by 0x54B0F15: FMallocThreadSafeProxy::Free(void*) (MallocThreadSafeProxy.h:62)
==12536== by 0x4B89EDB5: operator delete(void*) (ShaderFormatOpenGL.cpp:223)
==12536== by 0x4B8D5F7A: SCBuffer::AddMember(glsl_type const*, ir_variable*) (in /home/sciabaz/programs/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-ShaderFormatOpenGL.so)
==12536== by 0x4B8D0F7E: ast_cbuffer_declaration::hir(exec_list*, _mesa_glsl_parse_state*) (in /home/sciabaz/programs/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-ShaderFormatOpenGL.so)
==12536== by 0x4B8C77B0: _mesa_ast_to_hir(exec_list*, _mesa_glsl_parse_state*) (in /home/sciabaz/programs/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-ShaderFormatOpenGL.so)
==12536== by 0x4B8C6B4E: FHlslCrossCompilerContext::RunFrontend(char const**) (in /home/sciabaz/programs/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-ShaderFormatOpenGL.so)
==12536== by 0x4B8C7004: FHlslCrossCompilerContext::Run(char const*, char const*, FCodeBackend*, char**, char**) (in /home/sciabaz/programs/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-ShaderFormatOpenGL.so)
==12536== by 0x4B89897C: CompileShader_Windows_OGL(FShaderCompilerInput const&, FShaderCompilerOutput&, FString const&, GLSLVersion) (OpenGLShaderCompiler.cpp:1370)
==12536== by 0x7FECE82: FShaderCompileThreadRunnable::CompileDirectlyThroughDll() (ShaderCompiler.cpp:716)
==12536== by 0x7FED010: FShaderCompileThreadRunnable::CompilingLoop() (ShaderCompiler.cpp:769)
==12536== by 0x7FE6118: FShaderCompileThreadRunnableBase::Run() (ShaderCompiler.cpp:385)
==12536== Address 0x40eaf7f8 is 8 bytes before a block of size 31 alloc'd
==12536== at 0x4C2C12F: operator new(unsigned long) (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==12536== by 0x10B05988: std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_mutate(unsigned long, unsigned long, char const*, unsigned long) (in /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.21)
==12536== by 0x10B064FA: std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_replace(unsigned long, unsigned long, char const*, unsigned long) (in /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.21)
==12536== by 0x4B8D5F0D: SCBuffer::AddMember(glsl_type const*, ir_variable*) (in /home/sciabaz/programs/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-ShaderFormatOpenGL.so)
==12536== by 0x4B8D0F7E: ast_cbuffer_declaration::hir(exec_list*, _mesa_glsl_parse_state*) (in /home/sciabaz/programs/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-ShaderFormatOpenGL.so)
==12536== by 0x4B8C77B0: _mesa_ast_to_hir(exec_list*, _mesa_glsl_parse_state*) (in /home/sciabaz/programs/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-ShaderFormatOpenGL.so)
==12536== by 0x4B8C6B4E: FHlslCrossCompilerContext::RunFrontend(char const**) (in /home/sciabaz/programs/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-ShaderFormatOpenGL.so)
==12536== by 0x4B8C7004: FHlslCrossCompilerContext::Run(char const*, char const*, FCodeBackend*, char**, char**) (in /home/sciabaz/programs/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-ShaderFormatOpenGL.so)
==12536== by 0x4B89897C: CompileShader_Windows_OGL(FShaderCompilerInput const&, FShaderCompilerOutput&, FString const&, GLSLVersion) (OpenGLShaderCompiler.cpp:1370)
==12536== by 0x7FECE82: FShaderCompileThreadRunnable::CompileDirectlyThroughDll() (ShaderCompiler.cpp:716)
==12536== by 0x7FED010: FShaderCompileThreadRunnable::CompilingLoop() (ShaderCompiler.cpp:769)
==12536== by 0x7FE6118: FShaderCompileThreadRunnableBase::Run() (ShaderCompiler.cpp:385)
==12536==
==12536== Invalid free() / delete / delete[] / realloc()
==12536== at 0x4C2CE2B: free (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==12536== by 0x54B0F15: FMallocThreadSafeProxy::Free(void*) (MallocThreadSafeProxy.h:62)
==12536== by 0x4B89EDB5: operator delete(void*) (ShaderFormatOpenGL.cpp:223)
==12536== by 0x4B8D5F7A: SCBuffer::AddMember(glsl_type const*, ir_variable*) (in /home/sciabaz/programs/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-ShaderFormatOpenGL.so)
==12536== by 0x4B8D0F7E: ast_cbuffer_declaration::hir(exec_list*, _mesa_glsl_parse_state*) (in /home/sciabaz/programs/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-ShaderFormatOpenGL.so)
==12536== by 0x4B8C77B0: _mesa_ast_to_hir(exec_list*, _mesa_glsl_parse_state*) (in /home/sciabaz/programs/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-ShaderFormatOpenGL.so)
==12536== by 0x4B8C6B4E: FHlslCrossCompilerContext::RunFrontend(char const**) (in /home/sciabaz/programs/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-ShaderFormatOpenGL.so)
==12536== by 0x4B8C7004: FHlslCrossCompilerContext::Run(char const*, char const*, FCodeBackend*, char**, char**) (in /home/sciabaz/programs/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-ShaderFormatOpenGL.so)
==12536== by 0x4B89897C: CompileShader_Windows_OGL(FShaderCompilerInput const&, FShaderCompilerOutput&, FString const&, GLSLVersion) (OpenGLShaderCompiler.cpp:1370)
==12536== by 0x7FECE82: FShaderCompileThreadRunnable::CompileDirectlyThroughDll() (ShaderCompiler.cpp:716)
==12536== by 0x7FED010: FShaderCompileThreadRunnable::CompilingLoop() (ShaderCompiler.cpp:769)
==12536== by 0x7FE6118: FShaderCompileThreadRunnableBase::Run() (ShaderCompiler.cpp:385)
==12536== Address 0x630000006f is not stack'd, malloc'd or (recently) free'd
==12536==
==12536== Invalid read of size 8
==12536== at 0x540596F: FMallocAnsi::Free(void*) (MallocAnsi.h:118)
==12536== by 0x54B0F15: FMallocThreadSafeProxy::Free(void*) (MallocThreadSafeProxy.h:62)
==12536== by 0x4B89EDB5: operator delete(void*) (ShaderFormatOpenGL.cpp:223)
==12536== by 0x4B8D1054: ast_cbuffer_declaration::hir(exec_list*, _mesa_glsl_parse_state*) (in /home/sciabaz/programs/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-ShaderFormatOpenGL.so)
==12536== by 0x4B8C77B0: _mesa_ast_to_hir(exec_list*, _mesa_glsl_parse_state*) (in /home/sciabaz/programs/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-ShaderFormatOpenGL.so)
==12536== by 0x4B8C6B4E: FHlslCrossCompilerContext::RunFrontend(char const**) (in /home/sciabaz/programs/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-ShaderFormatOpenGL.so)
==12536== by 0x4B8C7004: FHlslCrossCompilerContext::Run(char const*, char const*, FCodeBackend*, char**, char**) (in /home/sciabaz/programs/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-ShaderFormatOpenGL.so)
==12536== by 0x4B89897C: CompileShader_Windows_OGL(FShaderCompilerInput const&, FShaderCompilerOutput&, FString const&, GLSLVersion) (OpenGLShaderCompiler.cpp:1370)
==12536== by 0x7FECE82: FShaderCompileThreadRunnable::CompileDirectlyThroughDll() (ShaderCompiler.cpp:716)
==12536== by 0x7FED010: FShaderCompileThreadRunnable::CompilingLoop() (ShaderCompiler.cpp:769)
==12536== by 0x7FE6118: FShaderCompileThreadRunnableBase::Run() (ShaderCompiler.cpp:385)
==12536== by 0x53C4F13: FRunnableThreadPThread::Run() (PThreadRunnableThread.cpp:26)
==12536== Address 0x40eb3768 is 8 bytes before a block of size 27 alloc'd
==12536== at 0x4C2C12F: operator new(unsigned long) (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==12536== by 0x4B8B9DB5: std::_List_node<SCBufferMember>* std::__cxx11::list<SCBufferMember, std::allocator<SCBufferMember> >::_M_create_node<SCBufferMember const&>(SCBufferMember const&) (in /home/sciabaz/programs/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-ShaderFormatOpenGL.so)
==12536== by 0x4B8D5F57: SCBuffer::AddMember(glsl_type const*, ir_variable*) (in /home/sciabaz/programs/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-ShaderFormatOpenGL.so)
==12536== by 0x4B8D0F7E: ast_cbuffer_declaration::hir(exec_list*, _mesa_glsl_parse_state*) (in /home/sciabaz/programs/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-ShaderFormatOpenGL.so)
==12536== by 0x4B8C77B0: _mesa_ast_to_hir(exec_list*, _mesa_glsl_parse_state*) (in /home/sciabaz/programs/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-ShaderFormatOpenGL.so)
==12536== by 0x4B8C6B4E: FHlslCrossCompilerContext::RunFrontend(char const**) (in /home/sciabaz/programs/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-ShaderFormatOpenGL.so)
==12536== by 0x4B8C7004: FHlslCrossCompilerContext::Run(char const*, char const*, FCodeBackend*, char**, char**) (in /home/sciabaz/programs/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-ShaderFormatOpenGL.so)
==12536== by 0x4B89897C: CompileShader_Windows_OGL(FShaderCompilerInput const&, FShaderCompilerOutput&, FString const&, GLSLVersion) (OpenGLShaderCompiler.cpp:1370)
==12536== by 0x7FECE82: FShaderCompileThreadRunnable::CompileDirectlyThroughDll() (ShaderCompiler.cpp:716)
==12536== by 0x7FED010: FShaderCompileThreadRunnable::CompilingLoop() (ShaderCompiler.cpp:769)
==12536== by 0x7FE6118: FShaderCompileThreadRunnableBase::Run() (ShaderCompiler.cpp:385)
==12536== by 0x53C4F13: FRunnableThreadPThread::Run() (PThreadRunnableThread.cpp:26)
==12536==
==12536== Invalid free() / delete / delete[] / realloc()
==12536== at 0x4C2CE2B: free (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==12536== by 0x54B0F15: FMallocThreadSafeProxy::Free(void*) (MallocThreadSafeProxy.h:62)
==12536== by 0x4B89EDB5: operator delete(void*) (ShaderFormatOpenGL.cpp:223)
==12536== by 0x4B8D1054: ast_cbuffer_declaration::hir(exec_list*, _mesa_glsl_parse_state*) (in /home/sciabaz/programs/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-ShaderFormatOpenGL.so)
==12536== by 0x4B8C77B0: _mesa_ast_to_hir(exec_list*, _mesa_glsl_parse_state*) (in /home/sciabaz/programs/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-ShaderFormatOpenGL.so)
==12536== by 0x4B8C6B4E: FHlslCrossCompilerContext::RunFrontend(char const**) (in /home/sciabaz/programs/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-ShaderFormatOpenGL.so)
==12536== by 0x4B8C7004: FHlslCrossCompilerContext::Run(char const*, char const*, FCodeBackend*, char**, char**) (in /home/sciabaz/programs/UnrealEngine/Engine/Binaries/Linux/libUE4Editor-ShaderFormatOpenGL.so)
==12536== by 0x4B89897C: CompileShader_Windows_OGL(FShaderCompilerInput const&, FShaderCompilerOutput&, FString const&, GLSLVersion) (OpenGLShaderCompiler.cpp:1370)
==12536== by 0x7FECE82: FShaderCompileThreadRunnable::CompileDirectlyThroughDll() (ShaderCompiler.cpp:716)
==12536== by 0x7FED010: FShaderCompileThreadRunnable::CompilingLoop() (ShaderCompiler.cpp:769)
==12536== by 0x7FE6118: FShaderCompileThreadRunnableBase::Run() (ShaderCompiler.cpp:385)
==12536== by 0x53C4F13: FRunnableThreadPThread::Run() (PThreadRunnableThread.cpp:26)
==12536== Address 0x630000006f is not stack'd, malloc'd or (recently) free'd
==12536==
.... AND MORE ....
Has anybody experienced issues with the memory allocator? Are there any workarounds? Is this a known issue?