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stack dump for https://github.com/ClangBuiltLinux/CBL-meetup-2020-slides
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| $ ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- make CC=clang -j71 mm/kasan/quarantine.o | |
| CALL scripts/atomic/check-atomics.sh | |
| CALL scripts/checksyscalls.sh | |
| CC mm/kasan/quarantine.o | |
| clang: ../include/llvm/ADT/ilist_iterator.h:139: llvm::ilist_iterator::reference llvm::ilist_iterator<llvm::ilist_detail::node_options<llvm::MachineInstr, true, true, void>, false, false>::operator*() const [OptionsT = llvm::ilist_detail::node_options<llvm::MachineInstr, true, true, void>, IsReverse = false, IsConst = false]: Assertion `!NodePtr->isKnownSentinel()' failed. | |
| Stack dump: | |
| 0. Program arguments: clang -Wp,-MD,mm/kasan/.quarantine.o.d -nostdinc -isystem /android0/llvm-project/llvm/build/lib/clang/11.0.0/include -I./arch/arm64/include -I./arch/arm64/include/generated -I./include -I./arch/arm64/include/uapi -I./arch/arm64/include/generated/uapi -I./include/uapi -I./include/generated/uapi -include ./include/linux/kconfig.h -include ./include/linux/compiler_types.h -D__KERNEL__ -mlittle-endian -DCC_USING_PATCHABLE_FUNCTION_ENTRY -DKASAN_SHADOW_SCALE_SHIFT=3 -Qunused-arguments -Wall -Wundef -Werror=strict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -fshort-wchar -fno-PIE -Werror=implicit-function-declaration -Werror=implicit-int -Wno-format-security -std=gnu89 --target=aarch64-linux-gnu --prefix=/usr/bin/ --gcc-toolchain=/usr -no-integrated-as -Werror=unknown-warning-option -mgeneral-regs-only -DCONFIG_CC_HAS_K_CONSTRAINT=1 -fno-asynchronous-unwind-tables -DKASAN_SHADOW_SCALE_SHIFT=3 -fno-delete-null-pointer-checks -Wno-address-of-packed-member -O2 -Wframe-larger-than=2048 -fstack-protector-strong -Wno-format-invalid-specifier -Wno-gnu -Wno-tautological-compare -mno-global-merge -Wno-unused-const-variable -fno-omit-frame-pointer -fno-optimize-sibling-calls -ftrivial-auto-var-init=pattern -fpatchable-function-entry=2 -Wdeclaration-after-statement -Wvla -Wno-pointer-sign -fno-strict-overflow -fno-merge-all-constants -fno-stack-check -Werror=date-time -Werror=incompatible-pointer-types -fmacro-prefix-map=./= -Wno-initializer-overrides -Wno-format -Wno-sign-compare -Wno-format-zero-length -fno-builtin -DKBUILD_MODFILE="mm/kasan/quarantine" -DKBUILD_BASENAME="quarantine" -DKBUILD_MODNAME="quarantine" -c -o mm/kasan/quarantine.o mm/kasan/quarantine.c | |
| 1. <eof> parser at end of file | |
| 2. Code generation | |
| 3. Running pass 'Function Pass Manager' on module 'mm/kasan/quarantine.c'. | |
| 4. Running pass 'Implement the 'patchable-function' attribute' on function '@rcu_lock_acquire' | |
| #0 0x00000000035d6934 PrintStackTraceSignalHandler(void*) (/android0/llvm-project/llvm/build/bin/clang-10+0x35d6934) | |
| #1 0x00000000035d447e llvm::sys::RunSignalHandlers() (/android0/llvm-project/llvm/build/bin/clang-10+0x35d447e) | |
| #2 0x00000000035d5ac2 llvm::sys::CleanupOnSignal(unsigned long) (/android0/llvm-project/llvm/build/bin/clang-10+0x35d5ac2) | |
| #3 0x000000000355c8de (anonymous namespace)::CrashRecoveryContextImpl::HandleCrash(int, unsigned long) (/android0/llvm-project/llvm/build/bin/clang-10+0x355c8de) | |
| #4 0x000000000355ca3d (/android0/llvm-project/llvm/build/bin/clang-10+0x355ca3d) | |
| #5 0x00007f7c278da3a0 __restore_rt (/lib/x86_64-linux-gnu/libpthread.so.0+0x123a0) | |
| #6 0x00007f7c26d99cfb raise /build/glibc-XAwaOT/glibc-2.28/signal/../sysdeps/unix/sysv/linux/raise.c:51:1 | |
| #7 0x00007f7c26d848ad abort /build/glibc-XAwaOT/glibc-2.28/stdlib/abort.c:81:7 | |
| #8 0x00007f7c26d8477f get_sysdep_segment_value /build/glibc-XAwaOT/glibc-2.28/intl/loadmsgcat.c:509:8 | |
| #9 0x00007f7c26d8477f _nl_load_domain /build/glibc-XAwaOT/glibc-2.28/intl/loadmsgcat.c:970:34 | |
| #10 0x00007f7c26d92542 (/lib/x86_64-linux-gnu/libc.so.6+0x2f542) | |
| #11 0x0000000002de3f28 (anonymous namespace)::PatchableFunction::runOnMachineFunction(llvm::MachineFunction&) (/android0/llvm-project/llvm/build/bin/clang-10+0x2de3f28) | |
| #12 0x0000000002b7de5a llvm::MachineFunctionPass::runOnFunction(llvm::Function&) (/android0/llvm-project/llvm/build/bin/clang-10+0x2b7de5a) | |
| #13 0x0000000002f763d3 llvm::FPPassManager::runOnFunction(llvm::Function&) (/android0/llvm-project/llvm/build/bin/clang-10+0x2f763d3) | |
| #14 0x0000000002f766b8 llvm::FPPassManager::runOnModule(llvm::Module&) (/android0/llvm-project/llvm/build/bin/clang-10+0x2f766b8) | |
| #15 0x0000000002f76d1d llvm::legacy::PassManagerImpl::run(llvm::Module&) (/android0/llvm-project/llvm/build/bin/clang-10+0x2f76d1d) | |
| #16 0x00000000037bfaf9 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> >) (/android0/llvm-project/llvm/build/bin/clang-10+0x37bfaf9) | |
| #17 0x0000000003fc2165 clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&) (/android0/llvm-project/llvm/build/bin/clang-10+0x3fc2165) | |
| #18 0x0000000004e001a3 clang::ParseAST(clang::Sema&, bool, bool) (/android0/llvm-project/llvm/build/bin/clang-10+0x4e001a3) | |
| #19 0x0000000003f09910 clang::FrontendAction::Execute() (/android0/llvm-project/llvm/build/bin/clang-10+0x3f09910) | |
| #20 0x0000000003e634a4 clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/android0/llvm-project/llvm/build/bin/clang-10+0x3e634a4) | |
| #21 0x0000000003fbb8ff clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/android0/llvm-project/llvm/build/bin/clang-10+0x3fbb8ff) | |
| #22 0x00000000021ea2eb cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/android0/llvm-project/llvm/build/bin/clang-10+0x21ea2eb) | |
| #23 0x00000000021e8337 ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&) (/android0/llvm-project/llvm/build/bin/clang-10+0x21e8337) | |
| #24 0x0000000003d28162 void llvm::function_ref<void ()>::callback_fn<clang::driver::CC1Command::Execute(llvm::ArrayRef<llvm::Optional<llvm::StringRef> >, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >*, bool*) const::$_1>(long) (/android0/llvm-project/llvm/build/bin/clang-10+0x3d28162) | |
| #25 0x000000000355c82a llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/android0/llvm-project/llvm/build/bin/clang-10+0x355c82a) | |
| #26 0x0000000003d27622 clang::driver::CC1Command::Execute(llvm::ArrayRef<llvm::Optional<llvm::StringRef> >, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >*, bool*) const (/android0/llvm-project/llvm/build/bin/clang-10+0x3d27622) | |
| #27 0x0000000003cf3a1d clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const*&) const (/android0/llvm-project/llvm/build/bin/clang-10+0x3cf3a1d) | |
| #28 0x0000000003cf3e1d clang::driver::Compilation::ExecuteJobs(clang::driver::JobList const&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*> >&) const (/android0/llvm-project/llvm/build/bin/clang-10+0x3cf3e1d) | |
| #29 0x0000000003d0b607 clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*> >&) (/android0/llvm-project/llvm/build/bin/clang-10+0x3d0b607) | |
| #30 0x00000000021e7ae9 main (/android0/llvm-project/llvm/build/bin/clang-10+0x21e7ae9) | |
| #31 0x00007f7c26d8652b __libc_start_main /build/glibc-XAwaOT/glibc-2.28/csu/../csu/libc-start.c:342:3 | |
| #32 0x00000000021e502a _start (/android0/llvm-project/llvm/build/bin/clang-10+0x21e502a) | |
| clang-10: error: clang frontend command failed due to signal (use -v to see invocation) | |
| Nick Desaulniers clang version 11.0.0 (git@github.com:llvm/llvm-project.git 67c608a9695496cfc9d3fdf9d0b12b554ac6b4df) | |
| Target: aarch64-unknown-linux-gnu | |
| Thread model: posix | |
| InstalledDir: /android0/llvm-project/llvm/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. | |
| 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/quarantine-b39c25.c | |
| clang-10: note: diagnostic msg: /tmp/quarantine-b39c25.sh | |
| clang-10: note: diagnostic msg: | |
| ******************** | |
| make[2]: *** [scripts/Makefile.build:266: mm/kasan/quarantine.o] Error 254 | |
| make[1]: *** [scripts/Makefile.build:503: mm/kasan] Error 2 | |
| make: *** [Makefile:1681: mm] Error 2 |
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| #!/bin/bash | |
| OUT=$(clang -Wp,-MD,mm/kasan/.quarantine.o.d -nostdinc -isystem /android0/llvm-project/llvm/build/lib/clang/11.0.0/include -I./arch/arm64/include -I./arch/arm64/include/generated -I./include -I./arch/arm64/include/uapi -I./arch/arm64/include/generated/uapi -I./include/uapi -I./include/generated/uapi -include ./include/linux/kconfig.h -include ./include/linux/compiler_types.h -D__KERNEL__ -mlittle-endian -DCC_USING_PATCHABLE_FUNCTION_ENTRY -DKASAN_SHADOW_SCALE_SHIFT=3 -Qunused-arguments -Wall -Wundef -Werror=strict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -fshort-wchar -fno-PIE -Werror=implicit-function-declaration -Werror=implicit-int -Wno-format-security -std=gnu89 --target=aarch64-linux-gnu --prefix=/usr/bin/ --gcc-toolchain=/usr -no-integrated-as -Werror=unknown-warning-option -mgeneral-regs-only -DCONFIG_CC_HAS_K_CONSTRAINT=1 -fno-asynchronous-unwind-tables -DKASAN_SHADOW_SCALE_SHIFT=3 -fno-delete-null-pointer-checks -Wno-address-of-packed-member -O2 -Wframe-larger-than=2048 -fstack-protector-strong -Wno-format-invalid-specifier -Wno-gnu -Wno-tautological-compare -mno-global-merge -Wno-unused-const-variable -fno-omit-frame-pointer -fno-optimize-sibling-calls -ftrivial-auto-var-init=pattern -fpatchable-function-entry=2 -Wdeclaration-after-statement -Wvla -Wno-pointer-sign -fno-strict-overflow -fno-merge-all-constants -fno-stack-check -Werror=date-time -Werror=incompatible-pointer-types -fmacro-prefix-map=./= -Wno-initializer-overrides -Wno-format -Wno-sign-compare -Wno-format-zero-length -fno-builtin -DKBUILD_MODFILE="mm/kasan/quarantine" -DKBUILD_BASENAME="quarantine" -DKBUILD_MODNAME="quarantine" -c -o mm/kasan/quarantine.o mm/kasan/quarantine.c 2>&1) | |
| echo $OUT | grep "PatchableFunction::runOnMachineFunction" |
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| #!/bin/bash | |
| OUT=$(clang -Wp,-MD,mm/kasan/.quarantine.o.d -nostdinc -isystem /android0/llvm-project/llvm/build/lib/clang/11.0.0/include -I./arch/arm64/include -I./arch/arm64/include/generated -I./include -I./arch/arm64/include/uapi -I./arch/arm64/include/generated/uapi -I./include/uapi -I./include/generated/uapi -include ./include/linux/kconfig.h -include ./include/linux/compiler_types.h -D__KERNEL__ -mlittle-endian -DCC_USING_PATCHABLE_FUNCTION_ENTRY -DKASAN_SHADOW_SCALE_SHIFT=3 -Qunused-arguments -Wall -Wundef -Werror=strict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -fshort-wchar -fno-PIE -Werror=implicit-function-declaration -Werror=implicit-int -Wno-format-security -std=gnu89 --target=aarch64-linux-gnu --prefix=/usr/bin/ --gcc-toolchain=/usr -no-integrated-as -Werror=unknown-warning-option -mgeneral-regs-only -DCONFIG_CC_HAS_K_CONSTRAINT=1 -fno-asynchronous-unwind-tables -DKASAN_SHADOW_SCALE_SHIFT=3 -fno-delete-null-pointer-checks -Wno-address-of-packed-member -O2 -Wframe-larger-than=2048 -fstack-protector-strong -Wno-format-invalid-specifier -Wno-gnu -Wno-tautological-compare -mno-global-merge -Wno-unused-const-variable -fno-omit-frame-pointer -fno-optimize-sibling-calls -ftrivial-auto-var-init=pattern -fpatchable-function-entry=2 -Wdeclaration-after-statement -Wvla -Wno-pointer-sign -fno-strict-overflow -fno-merge-all-constants -fno-stack-check -Werror=date-time -Werror=incompatible-pointer-types -fmacro-prefix-map=./= -Wno-initializer-overrides -Wno-format -Wno-sign-compare -Wno-format-zero-length -fno-builtin -DKBUILD_MODFILE="mm/kasan/quarantine" -DKBUILD_BASENAME="quarantine" -DKBUILD_MODNAME="quarantine" -E -o quarantine.i mm/kasan/quarantine.c 2>&1) | |
| echo $OUT | grep "PatchableFunction::runOnMachineFunction" |
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| --- repro.sh 2020-02-02 03:47:12.371437005 -0800 | |
| +++ repro_preprocess.sh 2020-02-02 03:46:54.427342994 -0800 | |
| @@ -1,3 +1,3 @@ | |
| #!/bin/bash | |
| -OUT=$(clang -Wp,-MD,mm/kasan/.quarantine.o.d -nostdinc -isystem /android0/llvm-project/llvm/build/lib/clang/11.0.0/include -I./arch/arm64/include -I./arch/arm64/include/generated -I./include -I./arch/arm64/include/uapi -I./arch/arm64/include/generated/uapi -I./include/uapi -I./include/generated/uapi -include ./include/linux/kconfig.h -include ./include/linux/compiler_types.h -D__KERNEL__ -mlittle-endian -DCC_USING_PATCHABLE_FUNCTION_ENTRY -DKASAN_SHADOW_SCALE_SHIFT=3 -Qunused-arguments -Wall -Wundef -Werror=strict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -fshort-wchar -fno-PIE -Werror=implicit-function-declaration -Werror=implicit-int -Wno-format-security -std=gnu89 --target=aarch64-linux-gnu --prefix=/usr/bin/ --gcc-toolchain=/usr -no-integrated-as -Werror=unknown-warning-option -mgeneral-regs-only -DCONFIG_CC_HAS_K_CONSTRAINT=1 -fno-asynchronous-unwind-tables -DKASAN_SHADOW_SCALE_SHIFT=3 -fno-delete-null-pointer-checks -Wno-address-of-packed-member -O2 -Wframe-larger-than=2048 -fstack-protector-strong -Wno-format-invalid-specifier -Wno-gnu -Wno-tautological-compare -mno-global-merge -Wno-unused-const-variable -fno-omit-frame-pointer -fno-optimize-sibling-calls -ftrivial-auto-var-init=pattern -fpatchable-function-entry=2 -Wdeclaration-after-statement -Wvla -Wno-pointer-sign -fno-strict-overflow -fno-merge-all-constants -fno-stack-check -Werror=date-time -Werror=incompatible-pointer-types -fmacro-prefix-map=./= -Wno-initializer-overrides -Wno-format -Wno-sign-compare -Wno-format-zero-length -fno-builtin -DKBUILD_MODFILE="mm/kasan/quarantine" -DKBUILD_BASENAME="quarantine" -DKBUILD_MODNAME="quarantine" -c -o mm/kasan/quarantine.o mm/kasan/quarantine.c 2>&1) | |
| +OUT=$(clang -Wp,-MD,mm/kasan/.quarantine.o.d -nostdinc -isystem /android0/llvm-project/llvm/build/lib/clang/11.0.0/include -I./arch/arm64/include -I./arch/arm64/include/generated -I./include -I./arch/arm64/include/uapi -I./arch/arm64/include/generated/uapi -I./include/uapi -I./include/generated/uapi -include ./include/linux/kconfig.h -include ./include/linux/compiler_types.h -D__KERNEL__ -mlittle-endian -DCC_USING_PATCHABLE_FUNCTION_ENTRY -DKASAN_SHADOW_SCALE_SHIFT=3 -Qunused-arguments -Wall -Wundef -Werror=strict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -fshort-wchar -fno-PIE -Werror=implicit-function-declaration -Werror=implicit-int -Wno-format-security -std=gnu89 --target=aarch64-linux-gnu --prefix=/usr/bin/ --gcc-toolchain=/usr -no-integrated-as -Werror=unknown-warning-option -mgeneral-regs-only -DCONFIG_CC_HAS_K_CONSTRAINT=1 -fno-asynchronous-unwind-tables -DKASAN_SHADOW_SCALE_SHIFT=3 -fno-delete-null-pointer-checks -Wno-address-of-packed-member -O2 -Wframe-larger-than=2048 -fstack-protector-strong -Wno-format-invalid-specifier -Wno-gnu -Wno-tautological-compare -mno-global-merge -Wno-unused-const-variable -fno-omit-frame-pointer -fno-optimize-sibling-calls -ftrivial-auto-var-init=pattern -fpatchable-function-entry=2 -Wdeclaration-after-statement -Wvla -Wno-pointer-sign -fno-strict-overflow -fno-merge-all-constants -fno-stack-check -Werror=date-time -Werror=incompatible-pointer-types -fmacro-prefix-map=./= -Wno-initializer-overrides -Wno-format -Wno-sign-compare -Wno-format-zero-length -fno-builtin -DKBUILD_MODFILE="mm/kasan/quarantine" -DKBUILD_BASENAME="quarantine" -DKBUILD_MODNAME="quarantine" -E -o quarantine.i mm/kasan/quarantine.c 2>&1) | |
| echo $OUT | grep "PatchableFunction::runOnMachineFunction" |
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| #!/bin/bash | |
| OUT=$(clang -Wp,-MD,mm/kasan/.quarantine.o.d -nostdinc -isystem /android0/llvm-project/llvm/build/lib/clang/11.0.0/include -I./arch/arm64/include -I./arch/arm64/include/generated -I./include -I./arch/arm64/include/uapi -I./arch/arm64/include/generated/uapi -I./include/uapi -I./include/generated/uapi -include ./include/linux/kconfig.h -include ./include/linux/compiler_types.h -D__KERNEL__ -mlittle-endian -DCC_USING_PATCHABLE_FUNCTION_ENTRY -DKASAN_SHADOW_SCALE_SHIFT=3 -Qunused-arguments -Wall -Wundef -Werror=strict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -fshort-wchar -fno-PIE -Werror=implicit-function-declaration -Werror=implicit-int -Wno-format-security -std=gnu89 --target=aarch64-linux-gnu --prefix=/usr/bin/ --gcc-toolchain=/usr -no-integrated-as -Werror=unknown-warning-option -mgeneral-regs-only -DCONFIG_CC_HAS_K_CONSTRAINT=1 -fno-asynchronous-unwind-tables -DKASAN_SHADOW_SCALE_SHIFT=3 -fno-delete-null-pointer-checks -Wno-address-of-packed-member -O2 -Wframe-larger-than=2048 -fstack-protector-strong -Wno-format-invalid-specifier -Wno-gnu -Wno-tautological-compare -mno-global-merge -Wno-unused-const-variable -fno-omit-frame-pointer -fno-optimize-sibling-calls -ftrivial-auto-var-init=pattern -fpatchable-function-entry=2 -Wdeclaration-after-statement -Wvla -Wno-pointer-sign -fno-strict-overflow -fno-merge-all-constants -fno-stack-check -Werror=date-time -Werror=incompatible-pointer-types -fmacro-prefix-map=./= -Wno-initializer-overrides -Wno-format -Wno-sign-compare -Wno-format-zero-length -fno-builtin -DKBUILD_MODFILE="mm/kasan/quarantine" -DKBUILD_BASENAME="quarantine" -DKBUILD_MODNAME="quarantine" -c quarantine.i 2>&1) | |
| echo $OUT | grep "PatchableFunction::runOnMachineFunction" |
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| --- repro_preprocess.sh 2020-02-02 03:46:54.427342994 -0800 | |
| +++ repo2.sh 2020-02-02 03:53:27.713402764 -0800 | |
| @@ -1,3 +1,3 @@ | |
| #!/bin/bash | |
| -OUT=$(clang -Wp,-MD,mm/kasan/.quarantine.o.d -nostdinc -isystem /android0/llvm-project/llvm/build/lib/clang/11.0.0/include -I./arch/arm64/include -I./arch/arm64/include/generated -I./include -I./arch/arm64/include/uapi -I./arch/arm64/include/generated/uapi -I./include/uapi -I./include/generated/uapi -include ./include/linux/kconfig.h -include ./include/linux/compiler_types.h -D__KERNEL__ -mlittle-endian -DCC_USING_PATCHABLE_FUNCTION_ENTRY -DKASAN_SHADOW_SCALE_SHIFT=3 -Qunused-arguments -Wall -Wundef -Werror=strict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -fshort-wchar -fno-PIE -Werror=implicit-function-declaration -Werror=implicit-int -Wno-format-security -std=gnu89 --target=aarch64-linux-gnu --prefix=/usr/bin/ --gcc-toolchain=/usr -no-integrated-as -Werror=unknown-warning-option -mgeneral-regs-only -DCONFIG_CC_HAS_K_CONSTRAINT=1 -fno-asynchronous-unwind-tables -DKASAN_SHADOW_SCALE_SHIFT=3 -fno-delete-null-pointer-checks -Wno-address-of-packed-member -O2 -Wframe-larger-than=2048 -fstack-protector-strong -Wno-format-invalid-specifier -Wno-gnu -Wno-tautological-compare -mno-global-merge -Wno-unused-const-variable -fno-omit-frame-pointer -fno-optimize-sibling-calls -ftrivial-auto-var-init=pattern -fpatchable-function-entry=2 -Wdeclaration-after-statement -Wvla -Wno-pointer-sign -fno-strict-overflow -fno-merge-all-constants -fno-stack-check -Werror=date-time -Werror=incompatible-pointer-types -fmacro-prefix-map=./= -Wno-initializer-overrides -Wno-format -Wno-sign-compare -Wno-format-zero-length -fno-builtin -DKBUILD_MODFILE="mm/kasan/quarantine" -DKBUILD_BASENAME="quarantine" -DKBUILD_MODNAME="quarantine" -E -o quarantine.i mm/kasan/quarantine.c 2>&1) | |
| +OUT=$(clang -Wp,-MD,mm/kasan/.quarantine.o.d -nostdinc -isystem /android0/llvm-project/llvm/build/lib/clang/11.0.0/include -I./arch/arm64/include -I./arch/arm64/include/generated -I./include -I./arch/arm64/include/uapi -I./arch/arm64/include/generated/uapi -I./include/uapi -I./include/generated/uapi -include ./include/linux/kconfig.h -include ./include/linux/compiler_types.h -D__KERNEL__ -mlittle-endian -DCC_USING_PATCHABLE_FUNCTION_ENTRY -DKASAN_SHADOW_SCALE_SHIFT=3 -Qunused-arguments -Wall -Wundef -Werror=strict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -fshort-wchar -fno-PIE -Werror=implicit-function-declaration -Werror=implicit-int -Wno-format-security -std=gnu89 --target=aarch64-linux-gnu --prefix=/usr/bin/ --gcc-toolchain=/usr -no-integrated-as -Werror=unknown-warning-option -mgeneral-regs-only -DCONFIG_CC_HAS_K_CONSTRAINT=1 -fno-asynchronous-unwind-tables -DKASAN_SHADOW_SCALE_SHIFT=3 -fno-delete-null-pointer-checks -Wno-address-of-packed-member -O2 -Wframe-larger-than=2048 -fstack-protector-strong -Wno-format-invalid-specifier -Wno-gnu -Wno-tautological-compare -mno-global-merge -Wno-unused-const-variable -fno-omit-frame-pointer -fno-optimize-sibling-calls -ftrivial-auto-var-init=pattern -fpatchable-function-entry=2 -Wdeclaration-after-statement -Wvla -Wno-pointer-sign -fno-strict-overflow -fno-merge-all-constants -fno-stack-check -Werror=date-time -Werror=incompatible-pointer-types -fmacro-prefix-map=./= -Wno-initializer-overrides -Wno-format -Wno-sign-compare -Wno-format-zero-length -fno-builtin -DKBUILD_MODFILE="mm/kasan/quarantine" -DKBUILD_BASENAME="quarantine" -DKBUILD_MODNAME="quarantine" -c quarantine.i 2>&1) | |
| echo $OUT | grep "PatchableFunction::runOnMachineFunction" |
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| $ /usr/bin/time -v creduce --n 71 ./repo2.sh quarantine.i | |
| ... | |
| ******** /android0/kernel-all/quarantine.i ******** | |
| a() { | |
| int b; | |
| while (b) | |
| ; | |
| } | |
| ... | |
| Elapsed (wall clock) time (h:mm:ss or m:ss): 6:33.40 |
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| a() { | |
| int b; | |
| while (b) | |
| ; | |
| } |
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| #!/bin/bash | |
| OUT=$(clang -O2 -ftrivial-auto-var-init=pattern -fpatchable-function-entry=2 -c quarantine.i 2>&1) | |
| echo $OUT | grep "PatchableFunction::runOnMachineFunction" |
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| --- repo2.sh 2020-02-02 03:53:27.713402764 -0800 | |
| +++ repo3.sh 2020-02-02 04:15:05.216200886 -0800 | |
| @@ -1,3 +1,3 @@ | |
| #!/bin/bash | |
| -OUT=$(clang -Wp,-MD,mm/kasan/.quarantine.o.d -nostdinc -isystem /android0/llvm-project/llvm/build/lib/clang/11.0.0/include -I./arch/arm64/include -I./arch/arm64/include/generated -I./include -I./arch/arm64/include/uapi -I./arch/arm64/include/generated/uapi -I./include/uapi -I./include/generated/uapi -include ./include/linux/kconfig.h -include ./include/linux/compiler_types.h -D__KERNEL__ -mlittle-endian -DCC_USING_PATCHABLE_FUNCTION_ENTRY -DKASAN_SHADOW_SCALE_SHIFT=3 -Qunused-arguments -Wall -Wundef -Werror=strict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -fshort-wchar -fno-PIE -Werror=implicit-function-declaration -Werror=implicit-int -Wno-format-security -std=gnu89 --target=aarch64-linux-gnu --prefix=/usr/bin/ --gcc-toolchain=/usr -no-integrated-as -Werror=unknown-warning-option -mgeneral-regs-only -DCONFIG_CC_HAS_K_CONSTRAINT=1 -fno-asynchronous-unwind-tables -DKASAN_SHADOW_SCALE_SHIFT=3 -fno-delete-null-pointer-checks -Wno-address-of-packed-member -O2 -Wframe-larger-than=2048 -fstack-protector-strong -Wno-format-invalid-specifier -Wno-gnu -Wno-tautological-compare -mno-global-merge -Wno-unused-const-variable -fno-omit-frame-pointer -fno-optimize-sibling-calls -ftrivial-auto-var-init=pattern -fpatchable-function-entry=2 -Wdeclaration-after-statement -Wvla -Wno-pointer-sign -fno-strict-overflow -fno-merge-all-constants -fno-stack-check -Werror=date-time -Werror=incompatible-pointer-types -fmacro-prefix-map=./= -Wno-initializer-overrides -Wno-format -Wno-sign-compare -Wno-format-zero-length -fno-builtin -DKBUILD_MODFILE="mm/kasan/quarantine" -DKBUILD_BASENAME="quarantine" -DKBUILD_MODNAME="quarantine" -c quarantine.i 2>&1) | |
| +OUT=$(clang -O2 -ftrivial-auto-var-init=pattern -fpatchable-function-entry=2 -c quarantine.i 2>&1) | |
| echo $OUT | grep "PatchableFunction::runOnMachineFunction" |
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| $ clang -O2 -ftrivial-auto-var-init=pattern -fpatchable-function-entry=2 quarantine.i -S -emit-llvm |
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| ; ModuleID = 'quarantine.i' | |
| source_filename = "quarantine.i" | |
| target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" | |
| target triple = "x86_64-unknown-linux-gnu" | |
| ; Function Attrs: norecurse noreturn nounwind readnone uwtable | |
| define dso_local i32 @a() local_unnamed_addr #0 { | |
| entry: | |
| br label %while.cond | |
| while.cond: ; preds = %while.cond, %entry | |
| br label %while.cond | |
| } | |
| attributes #0 = { norecurse noreturn nounwind readnone uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "frame-pointer"="none" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "patchable-function-entry"="2" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" } | |
| !llvm.module.flags = !{!0} | |
| !llvm.ident = !{!1} | |
| !0 = !{i32 1, !"wchar_size", i32 4} | |
| !1 = !{!"Nick Desaulniers clang version 11.0.0 (git@github.com:llvm/llvm-project.git 67c608a9695496cfc9d3fdf9d0b12b554ac6b4df)"} |
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| #!/bin/bash | |
| OUT=$(llc -O2 quarantine.ll 2>&1) | |
| echo $OUT | grep "PatchableFunction::runOnMachineFunction" |
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| $ llvm-reduce --test repo4.sh quarantine.ll |
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| --- quarantine.ll 2020-02-02 04:18:53.097398891 -0800 | |
| +++ reduced.ll 2020-02-02 04:25:54.811614984 -0800 | |
| @@ -1,20 +1,15 @@ | |
| -; ModuleID = 'quarantine.i' | |
| +; ModuleID = 'quarantine.ll' | |
| source_filename = "quarantine.i" | |
| target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" | |
| target triple = "x86_64-unknown-linux-gnu" | |
| ; Function Attrs: norecurse noreturn nounwind readnone uwtable | |
| define dso_local i32 @a() local_unnamed_addr #0 { | |
| entry: | |
| - br label %while.cond | |
| - | |
| -while.cond: ; preds = %while.cond, %entry | |
| - br label %while.cond | |
| + ret void | |
| } | |
| attributes #0 = { norecurse noreturn nounwind readnone uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "frame-pointer"="none" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "patchable-function-entry"="2" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" } | |
| !llvm.module.flags = !{!0} | |
| -!llvm.ident = !{!1} | |
| !0 = !{i32 1, !"wchar_size", i32 4} | |
| -!1 = !{!"Nick Desaulniers clang version 11.0.0 (git@github.com:llvm/llvm-project.git 67c608a9695496cfc9d3fdf9d0b12b554ac6b4df)"} |
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| ; ModuleID = 'quarantine.ll' | |
| source_filename = "quarantine.i" | |
| target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" | |
| target triple = "x86_64-unknown-linux-gnu" | |
| ; Function Attrs: norecurse noreturn nounwind readnone uwtable | |
| define dso_local i32 @a() local_unnamed_addr #0 { | |
| entry: | |
| ret void | |
| } | |
| attributes #0 = { norecurse noreturn nounwind readnone uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "frame-pointer"="none" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "patchable-function-entry"="2" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" } | |
| !llvm.module.flags = !{!0} | |
| !0 = !{i32 1, !"wchar_size", i32 4} |
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| --- quarantine.ll 2020-02-02 04:18:53.097398891 -0800 | |
| +++ reduced.ll 2020-02-02 04:25:54.811614984 -0800 | |
| @@ -1,20 +1,15 @@ | |
| -; ModuleID = 'quarantine.i' | |
| +; ModuleID = 'quarantine.ll' | |
| source_filename = "quarantine.i" | |
| target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" | |
| target triple = "x86_64-unknown-linux-gnu" | |
| ; Function Attrs: norecurse noreturn nounwind readnone uwtable | |
| define dso_local i32 @a() local_unnamed_addr #0 { | |
| entry: | |
| - br label %while.cond | |
| - | |
| -while.cond: ; preds = %while.cond, %entry | |
| - br label %while.cond | |
| + ret void | |
| } | |
| attributes #0 = { norecurse noreturn nounwind readnone uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "frame-pointer"="none" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "patchable-function-entry"="2" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" } | |
| !llvm.module.flags = !{!0} | |
| -!llvm.ident = !{!1} | |
| !0 = !{i32 1, !"wchar_size", i32 4} | |
| -!1 = !{!"Nick Desaulniers clang version 11.0.0 (git@github.com:llvm/llvm-project.git 67c608a9695496cfc9d3fdf9d0b12b554ac6b4df)"} |
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| #!/bin/bash | |
| OUT=$(llc -O2 quarantine.ll 2>&1) | |
| echo $OUT | not grep "PatchableFunction::runOnMachineFunction" |
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| --- repo4.sh 2020-02-02 04:25:51.939599896 -0800 | |
| +++ repo5.sh 2020-02-02 04:47:59.154574099 -0800 | |
| @@ -1,3 +1,3 @@ | |
| #!/bin/bash | |
| OUT=$(llc -O2 quarantine.ll 2>&1) | |
| -echo $OUT | grep "PatchableFunction::runOnMachineFunction" | |
| +echo $OUT | not grep "PatchableFunction::runOnMachineFunction" |
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| $ bugpoint -compile-custom -compile-command=./repro5.sh quarantine.ll |
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| ; ModuleID = 'bugpoint-reduced-simplified.ll' | |
| source_filename = "quarantine.i" | |
| target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" | |
| target triple = "x86_64-unknown-linux-gnu" | |
| define dso_local void @a() local_unnamed_addr #0 { | |
| entry: | |
| unreachable | |
| } | |
| attributes #0 = { "use-soft-float"="false" } | |
| !llvm.ident = !{!0} | |
| !0 = !{!"Nick Desaulniers clang version 11.0.0 (git@github.com:llvm/llvm-project.git 67c608a9695496cfc9d3fdf9d0b12b554ac6b4df)"} |
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