/bin/bash: line 1: 2234372 Segmentation fault clang -Wp,-MMD,arch/mips/math-emu/.sp_tlong.o.d -nostdinc -Iarch/mips/include -I./arch/mips/include/generated -Iinclude -I./include -Iarch/mips/include/uapi -I./arch/mips/include/generated/uapi -Iinclude/...

/bin/bash: line 1: 2234372 Segmentation fault clang -Wp,-MMD,arch/mips/math-emu/.sp_tlong.o.d -nostdinc -Iarch/mips/include -I./arch/mips/include/generated -Iinclude -I./include -Iarch/mips/include/uapi -I./arch/mips/include/generated/uapi -Iinclude/...

[kernel test robot]

:::::: 
:::::: Manual check reason: "clang compiler bug"
:::::: 

BCC: lkp@intel.com
CC: oe-kbuild-all@lists.linux.dev
CC: linux-kernel@vger.kernel.org
TO: Brahmajit Das <listout@listout.xyz>
CC: Alexei Starovoitov <ast@kernel.org>

Hi Brahmajit,

FYI, the error/warning was bisected to this commit, please ignore it if it's irrelevant.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   af4e9ef3d78420feb8fe58cd9a1ab80c501b3c08
commit: a1e83d4c0361f4b0e3b7ef8b603bf5e5ef60af86 selftests/bpf: Fix redefinition of 'off' as different kind of symbol
date:   5 months ago
:::::: branch date: 19 hours ago
:::::: commit date: 5 months ago
config: mips-randconfig-r053-20260303 (https://download.01.org/0day-ci/archive/20260303/202603032025.96Ws1pHR-lkp@intel.com/config)
compiler: clang version 23.0.0git (https://github.com/llvm/llvm-project 9a109fbb6e184ec9bcce10615949f598f4c974a9)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260303/202603032025.96Ws1pHR-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/r/202603032025.96Ws1pHR-lkp@intel.com/

Note: functions only called from assembly code should be annotated with the asmlinkage attribute
All errors (new ones prefixed by >>):

   PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace, preprocessed source, and associated run script.
   Stack dump:
   0.	Program arguments: clang -Wp,-MMD,arch/mips/math-emu/.sp_tlong.o.d -nostdinc -Iarch/mips/include -I./arch/mips/include/generated -Iinclude -I./include -Iarch/mips/include/uapi -I./arch/mips/include/generated/uapi -Iinclude/uapi -I./include/generated/uapi -include include/linux/compiler-version.h -include include/linux/kconfig.h -include include/linux/compiler_types.h -D__KERNEL__ --target=mipsel-linux-gnu -fintegrated-as -Werror=unknown-warning-option -Werror=ignored-optimization-argument -Werror=option-ignored -Werror=unused-command-line-argument -DVMLINUX_LOAD_ADDRESS=0xffffffff80101000 -DLINKER_LOAD_ADDRESS=0x80101000 -DDATAOFFSET=0 -fmacro-prefix-map== -Wundef -DKBUILD_EXTRA_WARN1 -std=gnu11 -fshort-wchar -funsigned-char -fno-common -fno-PIE -fno-strict-aliasing -mno-check-zero-division -mabi=32 -G 0 -mno-abicalls -fno-pic -pipe -msoft-float -Wa,-msoft-float -ffreestanding -EB -fno-stack-check -march=mips3 -Wa,--trap -DTOOLCHAIN_SUPPORTS_VIRT -Iarch/mips/include/asm/mach-n64 -Iarch/mips/include/asm/mach-generic -fno-asynchronous-unwind-tables -fno-delete-null-pointer-checks -O2 -fno-stack-protector -pg -fstrict-flex-arrays=3 -fno-strict-overflow -fno-stack-check -fno-builtin-wcslen -Wall -Wextra -Wundef -Werror=implicit-function-declaration -Werror=implicit-int -Werror=return-type -Werror=strict-prototypes -Wno-format-security -Wno-trigraphs -Wno-frame-address -Wno-address-of-packed-member -Wmissing-declarations -Wmissing-prototypes -Wno-gnu -Wno-format-overflow-non-kprintf -Wno-format-truncation-non-kprintf -Wno-default-const-init-unsafe -Wno-pointer-sign -Wcast-function-type -Wno-unterminated-string-initialization -Wimplicit-fallthrough -Werror=date-time -Werror=incompatible-pointer-types -Wenum-conversion -Wunused -Wmissing-format-attribute -Wmissing-include-dirs -Wunused-const-variable -Wno-missing-field-initializers -Wno-type-limits -Wno-shift-negative-value -Wno-enum-enum-conversion -Wno-sign-compare -Wno-unused-parameter -DRANDSTRUCT -frandomize-layout-seed-file=./scripts/basic/randstruct.seed -fno-crash-diagnostics -Wno-error=return-type -Wreturn-type -funsigned-char -Wundef -falign-functions=64 -Iarch/mips/math-emu -Iarch/mips/math-emu -DKBUILD_MODFILE=\"arch/mips/math-emu/sp_tlong\" -DKBUILD_BASENAME=\"sp_tlong\" -DKBUILD_MODNAME=\"sp_tlong\" -D__KBUILD_MODNAME=kmod_sp_tlong -c -o arch/mips/math-emu/sp_tlong.o arch/mips/math-emu/sp_tlong.c
   1.	<eof> parser at end of file
   2.	Code generation
   3.	Running pass 'Function Pass Manager' on module 'arch/mips/math-emu/sp_tlong.c'.
   4.	Running pass 'Branch Probability Basic Block Placement' on function '@ieee754sp_tlong'
    #0 0x000055ade986d9fb llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (clang-23+0x41019fb)
    #1 0x000055ade986b5c4 llvm::sys::CleanupOnSignal(unsigned long) (clang-23+0x40ff5c4)
    #2 0x000055ade979fa60 CrashRecoverySignalHandler(int) CrashRecoveryContext.cpp:0:0
    #3 0x00007fe5c593fdf0 (/lib/x86_64-linux-gnu/libc.so.6+0x3fdf0)
    #4 0x000055ade8e162af llvm::TailDuplicator::shouldTailDuplicate(bool, llvm::MachineBasicBlock&) (.part.0) TailDuplicator.cpp:0:0
    #5 0x000055ade8b23d14 (anonymous namespace)::MachineBlockPlacement::buildCFGChains() MachineBlockPlacement.cpp:0:0
    #6 0x000055ade8b266f9 (anonymous namespace)::MachineBlockPlacement::run(llvm::MachineFunction&) MachineBlockPlacement.cpp:0:0
    #7 0x000055ade8b297c1 (anonymous namespace)::MachineBlockPlacementLegacy::runOnMachineFunction(llvm::MachineFunction&) (.part.0) MachineBlockPlacement.cpp:0:0
    #8 0x000055ade8b796e8 llvm::MachineFunctionPass::runOnFunction(llvm::Function&) (clang-23+0x340d6e8)
    #9 0x000055ade9151ea9 llvm::FPPassManager::runOnFunction(llvm::Function&) (clang-23+0x39e5ea9)
   #10 0x000055ade915204c llvm::FPPassManager::runOnModule(llvm::Module&) (clang-23+0x39e604c)
   #11 0x000055ade91512b8 llvm::legacy::PassManagerImpl::run(llvm::Module&) (clang-23+0x39e52b8)
   #12 0x000055ade9c613d4 clang::emitBackendOutput(clang::CompilerInstance&, clang::CodeGenOptions&, llvm::StringRef, llvm::Module*, clang::BackendAction, llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem>, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream>>, clang::BackendConsumer*) (clang-23+0x44f53d4)
   #13 0x000055adea2969d7 clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&) (clang-23+0x4b2a9d7)
   #14 0x000055adebbe34dc clang::ParseAST(clang::Sema&, bool, bool) (clang-23+0x64774dc)
   #15 0x000055adea5d9d7a clang::FrontendAction::Execute() (clang-23+0x4e6dd7a)
   #16 0x000055adea554ce6 clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (clang-23+0x4de8ce6)
   #17 0x000055adea6bcb87 clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (clang-23+0x4f50b87)
   #18 0x000055ade66b7315 cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (clang-23+0xf4b315)
   #19 0x000055ade66af013 ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&, llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem>) driver.cpp:0:0
   #20 0x000055ade66af053 int llvm::function_ref<int (llvm::SmallVectorImpl<char const*>&)>::callback_fn<clang_main(int, char**, llvm::ToolContext const&)::'lambda'(llvm::SmallVectorImpl<char const*>&)>(long, llvm::SmallVectorImpl<char const*>&) driver.cpp:0:0
   #21 0x000055adea314e89 void llvm::function_ref<void ()>::callback_fn<clang::driver::CC1Command::Execute(llvm::ArrayRef<std::optional<llvm::StringRef>>, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>>*, bool*) const::'lambda'()>(long) Job.cpp:0:0
   #22 0x000055ade979fdc3 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (clang-23+0x4033dc3)
   #23 0x000055adea3155b4 clang::driver::CC1Command::Execute(llvm::ArrayRef<std::optional<llvm::StringRef>>, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>>*, bool*) const (.part.0) Job.cpp:0:0
   #24 0x000055adea2d5928 clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const*&, bool) const (clang-23+0x4b69928)
   #25 0x000055adea2d6882 clang::driver::Compilation::ExecuteJobs(clang::driver::JobList const&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&, bool) const (clang-23+0x4b6a882)
   #26 0x000055adea2e6fcc clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&) (clang-23+0x4b7afcc)
   #27 0x000055ade66b3ca3 clang_main(int, char**, llvm::ToolContext const&) (clang-23+0xf47ca3)
   #28 0x000055ade654ca69 main (clang-23+0xde0a69)
   #29 0x00007fe5c5929ca8 (/lib/x86_64-linux-gnu/libc.so.6+0x29ca8)
   #30 0x00007fe5c5929d65 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29d65)
   #31 0x000055ade66aea51 _start (clang-23+0xf42a51)
   clang: error: clang frontend command failed due to signal (use -v to see invocation)
>> /bin/bash: line 1: 2234372 Segmentation fault      clang -Wp,-MMD,arch/mips/math-emu/.sp_tlong.o.d -nostdinc -Iarch/mips/include -I./arch/mips/include/generated -Iinclude -I./include -Iarch/mips/include/uapi -I./arch/mips/include/generated/uapi -Iinclude/uapi -I./include/generated/uapi -include include/linux/compiler-version.h -include include/linux/kconfig.h -include include/linux/compiler_types.h -D__KERNEL__ --target=mipsel-linux-gnu -fintegrated-as -Werror=unknown-warning-option -Werror=ignored-optimization-argument -Werror=option-ignored -Werror=unused-command-line-argument -DVMLINUX_LOAD_ADDRESS=0xffffffff80101000 -DLINKER_LOAD_ADDRESS=0x80101000 -DDATAOFFSET=0 -fmacro-prefix-map== -Wundef -DKBUILD_EXTRA_WARN1 -std=gnu11 -fshort-wchar -funsigned-char -fno-common -fno-PIE -fno-strict-aliasing -mno-check-zero-division -mabi=32 -G 0 -mno-abicalls -fno-pic -pipe -msoft-float -Wa,-msoft-float -ffreestanding -EB -fno-stack-check -march=mips3 -Wa,--trap -DTOOLCHAIN_SUPPORTS_VIRT -Iarch/mips/include/asm/mach-n64 -Iarch/mips/include/asm/mach-generic -fno-asynchronous-unwind-tables -fno-delete-null-pointer-checks -O2 -fno-stack-protector -pg -fstrict-flex-arrays=3 -fno-strict-overflow -fno-stack-check -fno-builtin-wcslen -Wall -Wextra -Wundef -Werror=implicit-function-declaration -Werror=implicit-int -Werror=return-type -Werror=strict-prototypes -Wno-format-security -Wno-trigraphs -Wno-frame-address -Wno-address-of-packed-member -Wmissing-declarations -Wmissing-prototypes -Wno-gnu -Wno-format-overflow-non-kprintf -Wno-format-truncation-non-kprintf -Wno-default-const-init-unsafe -Wno-pointer-sign -Wcast-function-type -Wno-unterminated-string-initialization -Wimplicit-fallthrough -Werror=date-time -Werror=incompatible-pointer-types -Wenum-conversion -Wunused -Wmissing-format-attribute -Wmissing-include-dirs -Wunused-const-variable -Wno-missing-field-initializers -Wno-type-limits -Wno-shift-negative-value -Wno-enum-enum-conversion -Wno-sign-compare -Wno-unused-parameter -DRANDSTRUCT -frandomize-layout-seed-file=./scripts/basic/randstruct.seed -fno-crash-diagnostics -Wno-error=return-type -Wreturn-type -funsigned-char -Wundef -falign-functions=64 -Iarch/mips/math-emu -Iarch/mips/math-emu -DKBUILD_MODFILE='"arch/mips/math-emu/sp_tlong"' -DKBUILD_BASENAME='"sp_tlong"' -DKBUILD_MODNAME='"sp_tlong"' -D__KBUILD_MODNAME=kmod_sp_tlong -c -o arch/mips/math-emu/sp_tlong.o arch/mips/math-emu/sp_tlong.c

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