/bin/bash: line 1: 1611721 Segmentation fault clang -Wp,-MMD,drivers/hwmon/.ltc2992.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 -...

/bin/bash: line 1: 1611721 Segmentation fault clang -Wp,-MMD,drivers/hwmon/.ltc2992.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 -...

[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: Sanman Pradhan <psanman@juniper.net>
CC: Guenter Roeck <linux@roeck-us.net>

Hi Sanman,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   a5ebb76233b79db01e82e061173cb73c6d2b5c6b
commit: d6cc7c99bf1f73eda7d565d224d791d16239bb41 hwmon: (ltc2992) Clamp threshold writes to hardware range
date:   5 months ago
:::::: branch date: 4 hours ago
:::::: commit date: 5 months ago
config: mips-randconfig-r2100-20261011 (https://download.01.org/0day-ci/archive/20261011/202610110541.QfROE72r-lkp@intel.com/config)
compiler: clang version 24.0.0git (https://github.com/llvm/llvm-project 762316e293d1db4f495bdbb545c31d588a1a2d62)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20261011/202610110541.QfROE72r-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
| Fixes: d6cc7c99bf1f ("hwmon: (ltc2992) Clamp threshold writes to hardware range")
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/r/202610110541.QfROE72r-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 and dumped files.
   Stack dump:
   0.	Program arguments: clang -Wp,-MMD,drivers/hwmon/.ltc2992.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=0xffffffff84000000 -DLINKER_LOAD_ADDRESS=0x84000000 -DDATAOFFSET=0 -fmacro-prefix-map== -Wundef -DKBUILD_EXTRA_WARN1 -fshort-wchar -funsigned-char -fno-common -fno-PIE -fno-strict-aliasing -std=gnu11 -fms-anonymous-structs -Wno-gnu -Wno-microsoft-anon-tag -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 -Os -fstack-protector-strong -ftrivial-auto-var-init=zero -fexperimental-late-parse-attributes -fdiagnostics-show-inlining-chain -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-format-overflow-non-kprintf -Wno-format-truncation-non-kprintf -Wno-default-const-init-unsafe -Wno-type-limits -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-shift-negative-value -Wno-enum-enum-conversion -Wno-sign-compare -Wno-unused-parameter -gsplit-dwarf -g -DRANDSTRUCT -frandomize-layout-seed-file=./scripts/basic/randstruct.seed -fno-crash-diagnostics -Wno-error=return-type -Wreturn-type -funsigned-char -Wundef -falign-functions=64 -Idrivers/hwmon -Idrivers/hwmon -DMODULE -mlong-calls -DKBUILD_BASENAME=\"ltc2992\" -DKBUILD_MODNAME=\"ltc2992\" -D__KBUILD_MODNAME=ltc2992 -c -o drivers/hwmon/ltc2992.o drivers/hwmon/ltc2992.c
   1.	<eof> parser at end of file
   2.	Code generation
   3.	Running pass 'Function Pass Manager' on module 'drivers/hwmon/ltc2992.c'.
   4.	Running pass 'Shrink Wrapping analysis' on function '@ltc2992_write'
    #0 0x00005601a7e370ca llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (clang-24+0x3a560ca)
    #1 0x00005601a7e34ca4 llvm::sys::CleanupOnSignal(unsigned long) (clang-24+0x3a53ca4)
    #2 0x00005601a7d65680 CrashRecoverySignalHandler(int) CrashRecoveryContext.cpp:0:0
    #3 0x00007f48574c3df0 (/lib/x86_64-linux-gnu/libc.so.6+0x3fdf0)
    #4 0x00005601a73cde91 (anonymous namespace)::ShrinkWrapImpl::useOrDefCSROrFI(llvm::MachineInstr const&, llvm::RegScavenger*, bool) const ShrinkWrap.cpp:0:0
    #5 0x00005601a73d119c (anonymous namespace)::ShrinkWrapImpl::run(llvm::MachineFunction&) (.constprop.0) ShrinkWrap.cpp:0:0
    #6 0x00005601a73d2e3d (anonymous namespace)::ShrinkWrapLegacy::runOnMachineFunction(llvm::MachineFunction&) (.part.0) ShrinkWrap.cpp:0:0
    #7 0x00005601a71bf8a3 llvm::MachineFunctionPass::runOnFunction(llvm::Function&) (clang-24+0x2dde8a3)
    #8 0x00005601a7728301 llvm::FPPassManager::runOnFunction(llvm::Function&) (clang-24+0x3347301)
    #9 0x00005601a772876c llvm::FPPassManager::runOnModule(llvm::Module&) (clang-24+0x334776c)
   #10 0x00005601a772930e (anonymous namespace)::MPPassManager::runOnModule(llvm::Module&) LegacyPassManager.cpp:0:0
   #11 0x00005601a7729c3c llvm::legacy::PassManagerImpl::run(llvm::Module&) (clang-24+0x3348c3c)
   #12 0x00005601a8f7df22 runCodeGenPipelineLegacy(llvm::TargetMachine&, llvm::Module&, llvm::raw_pwrite_stream&, std::unique_ptr<llvm::ToolOutputFile, std::default_delete<llvm::ToolOutputFile>>&, llvm::CodeGenFileType, bool, bool) RunCodeGen.cpp:0:0
   #13 0x00005601a8f7dfa9 llvm::runCodeGenPipeline(llvm::TargetMachine&, llvm::Module&, llvm::raw_pwrite_stream&, std::unique_ptr<llvm::ToolOutputFile, std::default_delete<llvm::ToolOutputFile>>&, llvm::CodeGenFileType, bool, bool, llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem>) (clang-24+0x4b9cfa9)
   #14 0x00005601a81fdf82 (anonymous namespace)::EmitAssemblyHelper::emitAssembly(clang::BackendAction, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream>>, clang::BackendConsumer*) BackendUtil.cpp:0:0
   #15 0x00005601a81fe4de clang::emitBackendOutput(clang::CompilerInstance&, clang::CodeGenOptions&, 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-24+0x3e1d4de)
   #16 0x00005601a882195b clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&) (clang-24+0x444095b)
   #17 0x00005601aa2c33cc clang::ParseAST(clang::Sema&, bool, bool) (clang-24+0x5ee23cc)
   #18 0x00005601a8b73bde clang::FrontendAction::Execute() (clang-24+0x4792bde)
   #19 0x00005601a8b0252e clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (clang-24+0x472152e)
   #20 0x00005601a8c3d217 clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (clang-24+0x485c217)
   #21 0x00005601a4ca0cd8 cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (clang-24+0x8bfcd8)
   #22 0x00005601a4c989c3 ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&, llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem>) driver.cpp:0:0
   #23 0x00005601a4c98a07 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
   #24 0x00005601a889e889 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
   #25 0x00005601a7d659b3 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (clang-24+0x39849b3)
   #26 0x00005601a889fe0c 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
   #27 0x00005601a885dea8 clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const*&, bool) const (clang-24+0x447cea8)
   #28 0x00005601a8862612 clang::driver::Compilation::ExecuteJobs(clang::driver::JobList const&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&, bool) const (clang-24+0x4481612)
   #29 0x00005601a88727dc clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&) (clang-24+0x44917dc)
   #30 0x00005601a4c9d672 clang_main(int, char**, llvm::ToolContext const&) (clang-24+0x8bc672)
   #31 0x00005601a4bf49e2 main (clang-24+0x8139e2)
   #32 0x00007f48574adca8 (/lib/x86_64-linux-gnu/libc.so.6+0x29ca8)
   #33 0x00007f48574add65 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29d65)
   #34 0x00005601a4c98421 _start (clang-24+0x8b7421)
   clang: error: clang frontend command failed due to signal (use -v to see invocation)
>> /bin/bash: line 1: 1611721 Segmentation fault      clang -Wp,-MMD,drivers/hwmon/.ltc2992.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=0xffffffff84000000 -DLINKER_LOAD_ADDRESS=0x84000000 -DDATAOFFSET=0 -fmacro-prefix-map== -Wundef -DKBUILD_EXTRA_WARN1 -fshort-wchar -funsigned-char -fno-common -fno-PIE -fno-strict-aliasing -std=gnu11 -fms-anonymous-structs -Wno-gnu -Wno-microsoft-anon-tag -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 -Os -fstack-protector-strong -ftrivial-auto-var-init=zero -fexperimental-late-parse-attributes -fdiagnostics-show-inlining-chain -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-format-overflow-non-kprintf -Wno-format-truncation-non-kprintf -Wno-default-const-init-unsafe -Wno-type-limits -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-shift-negative-value -Wno-enum-enum-conversion -Wno-sign-compare -Wno-unused-parameter -gsplit-dwarf -g -DRANDSTRUCT -frandomize-layout-seed-file=./scripts/basic/randstruct.seed -fno-crash-diagnostics -Wno-error=return-type -Wreturn-type -funsigned-char -Wundef -falign-functions=64 -Idrivers/hwmon -Idrivers/hwmon -DMODULE -mlong-calls -DKBUILD_BASENAME='"ltc2992"' -DKBUILD_MODNAME='"ltc2992"' -D__KBUILD_MODNAME=ltc2992 -c -o drivers/hwmon/ltc2992.o drivers/hwmon/ltc2992.c

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https://github.com/intel/lkp-tests/wiki