"Assertion `isa<X>(Val) && "cast<Ty>() argument of incompatible type!"' failed" when compiling arch/x86/kernel/kprobes/opt.o

[connorkuehl]

Linux kernel commit SHA: a6ed68d6468bd5a3da78a103344ded1435fed57a

clang-10: /home/connor/src/llvm-project/llvm/include/llvm/Support/Casting.h:264: typename llvm::cast_retty<X, Y*>::ret_type llvm::cast(Y*) [with X = llvm::Instruction; Y = llvm::Value; typename llvm::cast_retty<X, Y*>::ret_type = llvm::Instruction*]: Assertion `isa<X>(Val) && "cast<Ty>() argument of incompatible type!"' failed.
Stack dump:
0.	Program arguments: /home/connor/src/llvm-project/build/bin/clang-10 -cc1 -triple x86_64-unknown-linux-gnu -S -disable-free -main-file-name opt.c -mrelocation-model static -mthread-model posix -fno-delete-null-pointer-checks -mllvm -warn-stack-size=1024 -mframe-pointer=all -relaxed-aliasing -mdisable-tail-calls -fmath-errno -masm-verbose -no-integrated-as -mconstructor-aliases -fuse-init-array -mcode-model kernel -target-cpu x86-64 -target-feature +retpoline-indirect-calls -target-feature +retpoline-indirect-branches -target-feature -sse -target-feature -mmx -target-feature -sse2 -target-feature -3dnow -target-feature -avx -target-feature -x87 -target-feature +retpoline-external-thunk -disable-red-zone -dwarf-column-info -debug-info-kind=limited -dwarf-version=4 -debugger-tuning=gdb -nostdsysteminc -nobuiltininc -resource-dir /home/connor/src/llvm-project/build/lib/clang/10.0.0 -dependency-file arch/x86/kernel/kprobes/.opt.o.d -MT arch/x86/kernel/kprobes/opt.o -sys-header-deps -isystem /home/connor/src/llvm-project/build/lib/clang/10.0.0/include -include ./include/linux/kconfig.h -include ./include/linux/compiler_types.h -I ./arch/x86/include -I ./arch/x86/include/generated -I ./include -I ./arch/x86/include/uapi -I ./arch/x86/include/generated/uapi -I ./include/uapi -I ./include/generated/uapi -D __KERNEL__ -D CONFIG_X86_X32_ABI -D CONFIG_AS_CFI=1 -D CONFIG_AS_CFI_SIGNAL_FRAME=1 -D CONFIG_AS_CFI_SECTIONS=1 -D CONFIG_AS_SSSE3=1 -D CONFIG_AS_AVX=1 -D CONFIG_AS_AVX2=1 -D CONFIG_AS_AVX512=1 -D CONFIG_AS_SHA1_NI=1 -D CONFIG_AS_SHA256_NI=1 -D CC_USING_FENTRY -D KBUILD_BASENAME="opt" -D KBUILD_MODNAME="opt" -O2 -Wall -Wundef -Werror=strict-prototypes -Wno-trigraphs -Werror=implicit-function-declaration -Werror=implicit-int -Wno-format-security -Werror=unknown-warning-option -Wno-sign-compare -Wno-address-of-packed-member -Wno-format-invalid-specifier -Wno-gnu -Wno-tautological-compare -Wno-unused-const-variable -Wdeclaration-after-statement -Wvla -Wno-pointer-sign -Werror=date-time -Werror=incompatible-pointer-types -Wno-initializer-overrides -Wno-format -Wno-sign-compare -Wno-format-zero-length -std=gnu89 -fno-dwarf-directory-asm -fdebug-compilation-dir /home/connor/src/kernels/linux -ferror-limit 19 -fmessage-length 0 -pg -mfentry -fwrapv -stack-protector 2 -mstack-alignment=8 -fcf-protection=none -fwchar-type=short -fno-signed-wchar -fgnuc-version=4.2.1 -fobjc-runtime=gcc -fno-common -fdiagnostics-show-option -fcolor-diagnostics -vectorize-loops -vectorize-slp -o /tmp/opt-3c3bf0.s -x c arch/x86/kernel/kprobes/opt.c 
1.	<eof> parser at end of file
2.	Per-module optimization passes
3.	Running pass 'Function Pass Manager' on module 'arch/x86/kernel/kprobes/opt.c'.
4.	Running pass 'Simplify the CFG' on function '@kmalloc_index'
  CC [M]  fs/afs/super.o
  CC      mm/early_ioremap.o
 #0 0x000055a91e8644f9 llvm::sys::PrintStackTrace(llvm::raw_ostream&) /home/connor/src/llvm-project/llvm/lib/Support/Unix/Signals.inc:548:22
 #1 0x000055a91e864590 PrintStackTraceSignalHandler(void*) /home/connor/src/llvm-project/llvm/lib/Support/Unix/Signals.inc:609:1
 #2 0x000055a91e862377 llvm::sys::RunSignalHandlers() /home/connor/src/llvm-project/llvm/lib/Support/Signals.cpp:68:20
 #3 0x000055a91e863e41 SignalHandler(int) /home/connor/src/llvm-project/llvm/lib/Support/Unix/Signals.inc:390:1
 #4 0x00007fe0e78d9540 __restore_rt (/lib/x86_64-linux-gnu/libpthread.so.0+0x15540)
 #5 0x00007fe0e736e3eb raise /build/glibc-4WA41p/glibc-2.30/signal/../sysdeps/unix/sysv/linux/raise.c:51:1
 #6 0x00007fe0e734d899 abort /build/glibc-4WA41p/glibc-2.30/stdlib/abort.c:81:7
 #7 0x00007fe0e734d769 get_sysdep_segment_value /build/glibc-4WA41p/glibc-2.30/intl/loadmsgcat.c:509:8
 #8 0x00007fe0e734d769 _nl_load_domain /build/glibc-4WA41p/glibc-2.30/intl/loadmsgcat.c:970:34
 #9 0x00007fe0e735f006 (/lib/x86_64-linux-gnu/libc.so.6+0x37006)
#10 0x000055a91d1a41fe llvm::cast_retty<llvm::Instruction, llvm::Value*>::ret_type llvm::cast<llvm::Instruction, llvm::Value>(llvm::Value*) /home/connor/src/llvm-project/llvm/include/llvm/Support/Casting.h:264:3
#11 0x000055a91d5f3378 llvm::parseWidenableBranch(llvm::User*, llvm::Use*&, llvm::Use*&, llvm::BasicBlock*&, llvm::BasicBlock*&) /home/connor/src/llvm-project/llvm/lib/Analysis/GuardUtils.cpp:87:32
#12 0x000055a91d5f3173 llvm::parseWidenableBranch(llvm::User const*, llvm::Value*&, llvm::Value*&, llvm::BasicBlock*&, llvm::BasicBlock*&) /home/connor/src/llvm-project/llvm/lib/Analysis/GuardUtils.cpp:49:3
#13 0x000055a91e97d851 tryWidenCondBranchToCondBranch(llvm::BranchInst*, llvm::BranchInst*) /home/connor/src/llvm-project/llvm/lib/Transforms/Utils/SimplifyCFG.cpp:3240:7
#14 0x000055a91e97debd SimplifyCondBranchToCondBranch(llvm::BranchInst*, llvm::BranchInst*, llvm::DataLayout const&, llvm::TargetTransformInfo const&) /home/connor/src/llvm-project/llvm/lib/Transforms/Utils/SimplifyCFG.cpp:3326:3
#15 0x000055a91e9897f0 (anonymous namespace)::SimplifyCFGOpt::SimplifyCondBranch(llvm::BranchInst*, llvm::IRBuilder<llvm::ConstantFolder, llvm::IRBuilderDefaultInserter>&) /home/connor/src/llvm-project/llvm/lib/Transforms/Utils/SimplifyCFG.cpp:6008:9
#16 0x000055a91e98a302 (anonymous namespace)::SimplifyCFGOpt::simplifyOnce(llvm::BasicBlock*) /home/connor/src/llvm-project/llvm/lib/Transforms/Utils/SimplifyCFG.cpp:6148:7
#17 0x000055a91e98a559 (anonymous namespace)::SimplifyCFGOpt::run(llvm::BasicBlock*) /home/connor/src/llvm-project/llvm/lib/Transforms/Utils/SimplifyCFG.cpp:6183:13
#18 0x000055a91e98a5f1 llvm::simplifyCFG(llvm::BasicBlock*, llvm::TargetTransformInfo const&, llvm::SimplifyCFGOptions const&, llvm::SmallPtrSetImpl<llvm::BasicBlock*>*) /home/connor/src/llvm-project/llvm/lib/Transforms/Utils/SimplifyCFG.cpp:6195:1
#19 0x000055a91e7817c4 iterativelySimplifyCFG(llvm::Function&, llvm::TargetTransformInfo const&, llvm::SimplifyCFGOptions const&) /home/connor/src/llvm-project/llvm/lib/Transforms/Scalar/SimplifyCFGPass.cpp:164:7
#20 0x000055a91e7818ab simplifyFunctionCFG(llvm::Function&, llvm::TargetTransformInfo const&, llvm::SimplifyCFGOptions const&) /home/connor/src/llvm-project/llvm/lib/Transforms/Scalar/SimplifyCFGPass.cpp:178:15
#21 0x000055a91e781e35 (anonymous namespace)::CFGSimplifyPass::runOnFunction(llvm::Function&) /home/connor/src/llvm-project/llvm/lib/Transforms/Scalar/SimplifyCFGPass.cpp:270:47
#22 0x000055a91e004758 llvm::FPPassManager::runOnFunction(llvm::Function&) /home/connor/src/llvm-project/llvm/lib/IR/LegacyPassManager.cpp:1481:20
#23 0x000055a91e004a19 llvm::FPPassManager::runOnModule(llvm::Module&) /home/connor/src/llvm-project/llvm/lib/IR/LegacyPassManager.cpp:1517:13
#24 0x000055a91e004e8b (anonymous namespace)::MPPassManager::runOnModule(llvm::Module&) /home/connor/src/llvm-project/llvm/lib/IR/LegacyPassManager.cpp:1582:20
#25 0x000055a91e0056bc llvm::legacy::PassManagerImpl::run(llvm::Module&) /home/connor/src/llvm-project/llvm/lib/IR/LegacyPassManager.cpp:1694:13
#26 0x000055a91e0058cd llvm::legacy::PassManager::run(llvm::Module&) /home/connor/src/llvm-project/llvm/lib/IR/LegacyPassManager.cpp:1726:1
#27 0x000055a91ebaa187 (anonymous namespace)::EmitAssemblyHelper::EmitAssembly(clang::BackendAction, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream> >) /home/connor/src/llvm-project/clang/lib/CodeGen/BackendUtil.cpp:910:68
#28 0x000055a91ebaea10 clang::EmitBackendOutput(clang::DiagnosticsEngine&, clang::HeaderSearchOptions const&, clang::CodeGenOptions const&, clang::TargetOptions const&, clang::LangOptions const&, llvm::DataLayout const&, llvm::Module*, clang::BackendAction, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream> >) /home/connor/src/llvm-project/clang/lib/CodeGen/BackendUtil.cpp:1546:27
#29 0x000055a91fc4b048 clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&) /home/connor/src/llvm-project/clang/lib/CodeGen/CodeGenAction.cpp:307:24
#30 0x000055a9214c2f0b clang::ParseAST(clang::Sema&, bool, bool) /home/connor/src/llvm-project/clang/lib/Parse/ParseAST.cpp:178:14
#31 0x000055a91f35b9cf clang::ASTFrontendAction::ExecuteAction() /home/connor/src/llvm-project/clang/lib/Frontend/FrontendAction.cpp:1043:11
#32 0x000055a91fc48c2c clang::CodeGenAction::ExecuteAction() /home/connor/src/llvm-project/clang/lib/CodeGen/CodeGenAction.cpp:1089:1
#33 0x000055a91f35b326 clang::FrontendAction::Execute() /home/connor/src/llvm-project/clang/lib/Frontend/FrontendAction.cpp:940:38
#34 0x000055a91f2edee8 clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) /home/connor/src/llvm-project/clang/lib/Frontend/CompilerInstance.cpp:964:42
#35 0x000055a91f4cd928 clang::ExecuteCompilerInvocation(clang::CompilerInstance*) /home/connor/src/llvm-project/clang/lib/FrontendTool/ExecuteCompilerInvocation.cpp:290:38
#36 0x000055a91d1156de cc1_main(llvm::ArrayRef<char const*>, char const*, void*) /home/connor/src/llvm-project/clang/tools/driver/cc1_main.cpp:250:40
#37 0x000055a91d10a615 ExecuteCC1Tool(llvm::ArrayRef<char const*>, llvm::StringRef) /home/connor/src/llvm-project/clang/tools/driver/driver.cpp:309:64
#38 0x000055a91d10ad0a main /home/connor/src/llvm-project/clang/tools/driver/driver.cpp:382:26
#39 0x00007fe0e734f1e3 __libc_start_main /build/glibc-4WA41p/glibc-2.30/csu/../csu/libc-start.c:342:3
#40 0x000055a91d108dfe _start (/home/connor/src/llvm-project/build/bin/clang-10+0x23b4dfe)
clang-10: error: unable to execute command: Aborted (core dumped)
clang-10: error: clang frontend command failed due to signal (use -v to see invocation)
clang version 10.0.0 (git@github.com:connorkuehl/llvm-project.git 10bb4c357453a9fb2995dd48aecbfa32ccc7677c)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /home/connor/src/llvm-project/build/bin
clang-10: note: diagnostic msg: PLEASE submit a bug report to https://bugs.llvm.org/ and include the crash backtrace, preprocessed source, and associated run script.
  CC      mm/cma.o
clang-10: note: diagnostic msg: 
********************

PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
clang-10: note: diagnostic msg: /tmp/opt-53ebaa.c
clang-10: note: diagnostic msg: /tmp/opt-53ebaa.sh
clang-10: note: diagnostic msg: 

********************
make[3]: *** [scripts/Makefile.build:266: arch/x86/kernel/kprobes/opt.o] Error 254
make[2]: *** [scripts/Makefile.build:509: arch/x86/kernel/kprobes] Error 2
make[1]: *** [scripts/Makefile.build:509: arch/x86/kernel] Error 2
make: *** [Makefile:1652: arch/x86] Error 2
make: *** Waiting for unfinished jobs....