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Omar Ahmed via llvm-dev

2021-Jan-14 21:03 UTC

[llvm-dev] Running a dynamic shared library codeGen pass from clang

Hi,
I was trying to run a custom pass built as a shared library codeGen pass but it
keeps giving me this error msg:
```
fatal error: error in backend: Trying to construct TargetPassConfig without a
target machine. Scheduling a CodeGen pass without a target triple set?
PLEASE submit a bug report to https://bugs.llvm.org/ and include the crash
backtrace, preprocessed source, and associated run script.
Stack dump:
0.    Program arguments: clang-12 -target x86_64-unknown-linux-gnu -mcpu=x86_64
-O2 -fstack-protector-all -Xclang -load -Xclang ./libShadowStack.so -S test.c
1.    <eof> parser at end of file
Stack dump without symbol names (ensure you have llvm-symbolizer in your PATH or
set the environment var `LLVM_SYMBOLIZER_PATH` to point to it):
/usr/lib/x86_64-linux-gnu/libLLVM-12.so.1(_ZN4llvm3sys15PrintStackTraceERNS_11raw_ostreamEi+0x23)[0x7fd8a6747303]
/usr/lib/x86_64-linux-gnu/libLLVM-12.so.1(_ZN4llvm3sys17RunSignalHandlersEv+0x50)[0x7fd8a6745640]
/usr/lib/x86_64-linux-gnu/libLLVM-12.so.1(_ZN4llvm3sys15CleanupOnSignalEm+0xdd)[0x7fd8a6746a5d]
/usr/lib/x86_64-linux-gnu/libLLVM-12.so.1(+0xa4b72a)[0x7fd8a669972a]
/usr/lib/x86_64-linux-gnu/libLLVM-12.so.1(+0xa4b6cb)[0x7fd8a66996cb]
/usr/lib/x86_64-linux-gnu/libLLVM-12.so.1(_ZN4llvm3sys7Process4ExitEib+0x27)[0x7fd8a67424d7]
clang-12[0x412bc0]
/usr/lib/x86_64-linux-gnu/libLLVM-12.so.1(_ZN4llvm18report_fatal_errorERKNS_5TwineEb+0x122)[0x7fd8a66a5102]
/usr/lib/x86_64-linux-gnu/libLLVM-12.so.1(+0xa56fd6)[0x7fd8a66a4fd6]
/usr/lib/x86_64-linux-gnu/libLLVM-12.so.1(+0xfbdd6e)[0x7fd8a6c0bd6e]
/usr/lib/x86_64-linux-gnu/libLLVM-12.so.1(+0xfc0bd3)[0x7fd8a6c0ebd3]
/usr/lib/x86_64-linux-gnu/libLLVM-12.so.1(_ZN4llvm17PMTopLevelManager12schedulePassEPNS_4PassE+0x17b)[0x7fd8a686ebdb]
/usr/lib/x86_64-linux-gnu/libLLVM-12.so.1(_ZN4llvm17PMTopLevelManager12schedulePassEPNS_4PassE+0x13d)[0x7fd8a686eb9d]
./libShadowStack.so(+0x11268)[0x7fd8a3ecf268]
./libShadowStack.so(_ZNSt17_Function_handlerIFvRKN4llvm18PassManagerBuilderERNS0_6legacy15PassManagerBaseEEPS7_E9_M_invokeERKSt9_Any_dataS3_S6_+0x49)[0x7fd8a3ed2b0e]
/usr/lib/x86_64-linux-gnu/libLLVM-12.so.1(_ZNK4llvm18PassManagerBuilder17addExtensionsToPMENS0_16ExtensionPointTyERNS_6legacy15PassManagerBaseE+0xdf)[0x7fd8a758225f]
/usr/lib/x86_64-linux-gnu/libLLVM-12.so.1(_ZN4llvm18PassManagerBuilder25populateModulePassManagerERNS_6legacy15PassManagerBaseE+0xa71)[0x7fd8a7583991]
/usr/lib/x86_64-linux-gnu/libclang-cpp.so.12(_ZN5clang17EmitBackendOutputERNS_17DiagnosticsEngineERKNS_19HeaderSearchOptionsERKNS_14CodeGenOptionsERKNS_13TargetOptionsERKNS_11LangOptionsERKN4llvm10DataLayoutEPNSE_6ModuleENS_13BackendActionESt10unique_ptrINSE_17raw_pwrite_streamESt14default_deleteISM_EE+0x260c)[0x7fd8ac54cc5c]
/usr/lib/x86_64-linux-gnu/libclang-cpp.so.12(+0x180b42f)[0x7fd8ac80e42f]
/usr/lib/x86_64-linux-gnu/libclang-cpp.so.12(_ZN5clang8ParseASTERNS_4SemaEbb+0x244)[0x7fd8ab931f14]
/usr/lib/x86_64-linux-gnu/libclang-cpp.so.12(_ZN5clang14FrontendAction7ExecuteEv+0x48)[0x7fd8acec88c8]
/usr/lib/x86_64-linux-gnu/libclang-cpp.so.12(_ZN5clang16CompilerInstance13ExecuteActionERNS_14FrontendActionE+0x841)[0x7fd8ace7bbc1]
/usr/lib/x86_64-linux-gnu/libclang-cpp.so.12(_ZN5clang25ExecuteCompilerInvocationEPNS_16CompilerInstanceE+0x582)[0x7fd8acf2c012]
clang-12(_Z8cc1_mainN4llvm8ArrayRefIPKcEES2_Pv+0x5fb)[0x41258b]
clang-12[0x410d3e]
/usr/lib/x86_64-linux-gnu/libclang-cpp.so.12(+0x1b96662)[0x7fd8acb99662]
/usr/lib/x86_64-linux-gnu/libLLVM-12.so.1(_ZN4llvm20CrashRecoveryContext9RunSafelyENS_12function_refIFvvEEE+0xdd)[0x7fd8a66996ad]
/usr/lib/x86_64-linux-gnu/libclang-cpp.so.12(_ZNK5clang6driver10CC1Command7ExecuteEN4llvm8ArrayRefINS2_8OptionalINS2_9StringRefEEEEEPNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEPb+0x139)[0x7fd8acb98e49]
/usr/lib/x86_64-linux-gnu/libclang-cpp.so.12(_ZNK5clang6driver11Compilation14ExecuteCommandERKNS0_7CommandERPS3_+0x17f)[0x7fd8acb6edff]
/usr/lib/x86_64-linux-gnu/libclang-cpp.so.12(_ZNK5clang6driver11Compilation11ExecuteJobsERKNS0_7JobListERN4llvm15SmallVectorImplISt4pairIiPKNS0_7CommandEEEE+0x77)[0x7fd8acb6f1b7]
/usr/lib/x86_64-linux-gnu/libclang-cpp.so.12(_ZN5clang6driver6Driver18ExecuteCompilationERNS0_11CompilationERN4llvm15SmallVectorImplISt4pairIiPKNS0_7CommandEEEE+0xdc)[0x7fd8acb83bec]
clang-12(main+0x24cd)[0x4105fd]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf0)[0x7fd8a4fa0840]
clang-12(_start+0x29)[0x40de49]
clang: error: clang frontend command failed with exit code 70 (use -v to see
invocation)
Ubuntu clang version
12.0.0-++20201209080817+199ec40e7bc-1~exp1~20201209191501.3386
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /usr/bin
clang: note: diagnostic msg: 
********************```
I register my pass with this code:
```
static void registerMyPass(const PassManagerBuilder &Builder,
PassManagerBase &PM) {
    PM.add(new ShadowStack());
}
static RegisterStandardPasses
RegisterMyPass(PassManagerBuilder::EP_OptimizerLast, registerMyPass);```
and I run my pass with this command line:
clang-12 -target x86_64-unknown-linux-gnu -mcpu=x86_64 -O2 -fstack-protector-all
-Xclang -load -Xclang ./libShadowStack.so -S test.c

I can't understand what is the problem here, So any help would be
appreciated.
Thanks in advanceOmar Ahmed


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Min-Yih Hsu via llvm-dev

2021-Jan-14 22:21 UTC

head link

[llvm-dev] Running a dynamic shared library codeGen pass from clang

You might want to use some ways to symbolize the stack trace. The most straight
forward way might just be building clang and your Pass with debug info (e.g.
-DCMAKE_BUILD_TYPE=Debug when invoking the cmake for building LLVM).

After that you can figure out the problem by either looking at the stack trace
or using debuggers like gdb.

-Min
> On Jan 14, 2021, at 1:03 PM, Omar Ahmed via llvm-dev <llvm-dev at
lists.llvm.org> wrote:
> 
> Hi,
> 
> I was trying to run a custom pass built as a shared library codeGen pass
but it keeps giving me this error msg:
> 
> ```
> fatal error: error in backend: Trying to construct TargetPassConfig without
a target machine. Scheduling a CodeGen pass without a target triple set?
> PLEASE submit a bug report to https://bugs.llvm.org/ and include the crash
backtrace, preprocessed source, and associated run script.
> Stack dump:
> 0.    Program arguments: clang-12 -target x86_64-unknown-linux-gnu
-mcpu=x86_64 -O2 -fstack-protector-all -Xclang -load -Xclang ./libShadowStack.so
-S test.c
> 1.    <eof> parser at end of file
> Stack dump without symbol names (ensure you have llvm-symbolizer in your
PATH or set the environment var `LLVM_SYMBOLIZER_PATH` to point to it):
>
/usr/lib/x86_64-linux-gnu/libLLVM-12.so.1(_ZN4llvm3sys15PrintStackTraceERNS_11raw_ostreamEi+0x23)[0x7fd8a6747303]
>
/usr/lib/x86_64-linux-gnu/libLLVM-12.so.1(_ZN4llvm3sys17RunSignalHandlersEv+0x50)[0x7fd8a6745640]
>
/usr/lib/x86_64-linux-gnu/libLLVM-12.so.1(_ZN4llvm3sys15CleanupOnSignalEm+0xdd)[0x7fd8a6746a5d]
> /usr/lib/x86_64-linux-gnu/libLLVM-12.so.1(+0xa4b72a)[0x7fd8a669972a]
> /usr/lib/x86_64-linux-gnu/libLLVM-12.so.1(+0xa4b6cb)[0x7fd8a66996cb]
>
/usr/lib/x86_64-linux-gnu/libLLVM-12.so.1(_ZN4llvm3sys7Process4ExitEib+0x27)[0x7fd8a67424d7]
> clang-12[0x412bc0]
>
/usr/lib/x86_64-linux-gnu/libLLVM-12.so.1(_ZN4llvm18report_fatal_errorERKNS_5TwineEb+0x122)[0x7fd8a66a5102]
> /usr/lib/x86_64-linux-gnu/libLLVM-12.so.1(+0xa56fd6)[0x7fd8a66a4fd6]
> /usr/lib/x86_64-linux-gnu/libLLVM-12.so.1(+0xfbdd6e)[0x7fd8a6c0bd6e]
> /usr/lib/x86_64-linux-gnu/libLLVM-12.so.1(+0xfc0bd3)[0x7fd8a6c0ebd3]
>
/usr/lib/x86_64-linux-gnu/libLLVM-12.so.1(_ZN4llvm17PMTopLevelManager12schedulePassEPNS_4PassE+0x17b)[0x7fd8a686ebdb]
>
/usr/lib/x86_64-linux-gnu/libLLVM-12.so.1(_ZN4llvm17PMTopLevelManager12schedulePassEPNS_4PassE+0x13d)[0x7fd8a686eb9d]
> ./libShadowStack.so(+0x11268)[0x7fd8a3ecf268]
>
./libShadowStack.so(_ZNSt17_Function_handlerIFvRKN4llvm18PassManagerBuilderERNS0_6legacy15PassManagerBaseEEPS7_E9_M_invokeERKSt9_Any_dataS3_S6_+0x49)[0x7fd8a3ed2b0e]
>
/usr/lib/x86_64-linux-gnu/libLLVM-12.so.1(_ZNK4llvm18PassManagerBuilder17addExtensionsToPMENS0_16ExtensionPointTyERNS_6legacy15PassManagerBaseE+0xdf)[0x7fd8a758225f]
>
/usr/lib/x86_64-linux-gnu/libLLVM-12.so.1(_ZN4llvm18PassManagerBuilder25populateModulePassManagerERNS_6legacy15PassManagerBaseE+0xa71)[0x7fd8a7583991]
>
/usr/lib/x86_64-linux-gnu/libclang-cpp.so.12(_ZN5clang17EmitBackendOutputERNS_17DiagnosticsEngineERKNS_19HeaderSearchOptionsERKNS_14CodeGenOptionsERKNS_13TargetOptionsERKNS_11LangOptionsERKN4llvm10DataLayoutEPNSE_6ModuleENS_13BackendActionESt10unique_ptrINSE_17raw_pwrite_streamESt14default_deleteISM_EE+0x260c)[0x7fd8ac54cc5c]
> /usr/lib/x86_64-linux-gnu/libclang-cpp.so.12(+0x180b42f)[0x7fd8ac80e42f]
>
/usr/lib/x86_64-linux-gnu/libclang-cpp.so.12(_ZN5clang8ParseASTERNS_4SemaEbb+0x244)[0x7fd8ab931f14]
>
/usr/lib/x86_64-linux-gnu/libclang-cpp.so.12(_ZN5clang14FrontendAction7ExecuteEv+0x48)[0x7fd8acec88c8]
>
/usr/lib/x86_64-linux-gnu/libclang-cpp.so.12(_ZN5clang16CompilerInstance13ExecuteActionERNS_14FrontendActionE+0x841)[0x7fd8ace7bbc1]
>
/usr/lib/x86_64-linux-gnu/libclang-cpp.so.12(_ZN5clang25ExecuteCompilerInvocationEPNS_16CompilerInstanceE+0x582)[0x7fd8acf2c012]
> clang-12(_Z8cc1_mainN4llvm8ArrayRefIPKcEES2_Pv+0x5fb)[0x41258b]
> clang-12[0x410d3e]
> /usr/lib/x86_64-linux-gnu/libclang-cpp.so.12(+0x1b96662)[0x7fd8acb99662]
>
/usr/lib/x86_64-linux-gnu/libLLVM-12.so.1(_ZN4llvm20CrashRecoveryContext9RunSafelyENS_12function_refIFvvEEE+0xdd)[0x7fd8a66996ad]
>
/usr/lib/x86_64-linux-gnu/libclang-cpp.so.12(_ZNK5clang6driver10CC1Command7ExecuteEN4llvm8ArrayRefINS2_8OptionalINS2_9StringRefEEEEEPNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEPb+0x139)[0x7fd8acb98e49]
>
/usr/lib/x86_64-linux-gnu/libclang-cpp.so.12(_ZNK5clang6driver11Compilation14ExecuteCommandERKNS0_7CommandERPS3_+0x17f)[0x7fd8acb6edff]
>
/usr/lib/x86_64-linux-gnu/libclang-cpp.so.12(_ZNK5clang6driver11Compilation11ExecuteJobsERKNS0_7JobListERN4llvm15SmallVectorImplISt4pairIiPKNS0_7CommandEEEE+0x77)[0x7fd8acb6f1b7]
>
/usr/lib/x86_64-linux-gnu/libclang-cpp.so.12(_ZN5clang6driver6Driver18ExecuteCompilationERNS0_11CompilationERN4llvm15SmallVectorImplISt4pairIiPKNS0_7CommandEEEE+0xdc)[0x7fd8acb83bec]
> clang-12(main+0x24cd)[0x4105fd]
> /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf0)[0x7fd8a4fa0840]
> clang-12(_start+0x29)[0x40de49]
> clang: error: clang frontend command failed with exit code 70 (use -v to
see invocation)
> Ubuntu clang version
12.0.0-++20201209080817+199ec40e7bc-1~exp1~20201209191501.3386
> Target: x86_64-unknown-linux-gnu
> Thread model: posix
> InstalledDir: /usr/bin
> clang: note: diagnostic msg: 
> ********************
> ```
> 
> I register my pass with this code:
> 
> ```
> static void registerMyPass(const PassManagerBuilder &Builder,
PassManagerBase &PM) {
>     PM.add(new ShadowStack());
> }
> static RegisterStandardPasses
RegisterMyPass(PassManagerBuilder::EP_OptimizerLast, registerMyPass);
> ```
> 
> and I run my pass with this command line:
> 
> clang-12 -target x86_64-unknown-linux-gnu -mcpu=x86_64 -O2
-fstack-protector-all -Xclang -load -Xclang ./libShadowStack.so -S test.c
> 
> 
> I can't understand what is the problem here, So any help would be
appreciated.
> 
> Thanks in advance
> Omar Ahmed
> 
> 
> _______________________________________________
> LLVM Developers mailing list
> llvm-dev at lists.llvm.org
> https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
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llvm dev - Jan 2021 - Running a dynamic shared library codeGen pass from clang

[llvm-dev] Running a dynamic shared library codeGen pass from clang

[llvm-dev] Running a dynamic shared library codeGen pass from clang