/bin/bash: line 1: 2230751 Segmentation fault clang -Wp,-MMD,fs/notify/fanotify/.fanotify.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 <[email protected]>
Newsgroups dev.linux.lists.oe-kbuild
Message-ID <[email protected]> 
:::::: 
:::::: Manual check reason: "clang compiler bug"
:::::: 

BCC: [email protected]
CC: [email protected]
CC: [email protected]
TO: AnonymeMeow <[email protected]>
CC: Jan Kara <[email protected]>
CC: "Christian Brauner (Amutable)" <[email protected]>

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   0e35b9b6ec0ffcc5e23cbdec09f5c622ad532b53
commit: 82c6dd20479bb6a9625e1d63a650c3be8865e2db fanotify: allow reporting pidfds for reaped tasks
date:   4 weeks ago
:::::: branch date: 16 hours ago
:::::: commit date: 4 weeks ago
config: mips-randconfig-r123-20260705 (https://download.01.org/0day-ci/archive/20260708/[email protected]/config)
compiler: clang version 23.0.0git (https://github.com/llvm/llvm-project 0a2fb2a2269da0e2a3e230beb6cad39ca314db33)
sparse: v0.6.5-rc1
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260708/[email protected]/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: 82c6dd20479b ("fanotify: allow reporting pidfds for reaped tasks")
| Reported-by: kernel test robot <[email protected]>
| Closes: https://lore.kernel.org/r/[email protected]/

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,fs/notify/fanotify/.fanotify.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=0xffffffff80040000 -DLINKER_LOAD_ADDRESS=0x80040000 -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 -EL -fno-stack-check -march=mips3 -Wa,--trap -DTOOLCHAIN_SUPPORTS_VIRT -Iarch/mips/include/asm/mach-dec -Iarch/mips/include/asm/mach-generic -fno-asynchronous-unwind-tables -fno-delete-null-pointer-checks -O2 -fstack-protector-strong -fomit-frame-pointer -ftrivial-auto-var-init=zero -fexperimental-late-parse-attributes -fdiagnostics-show-inlining-chain -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 -DRANDSTRUCT -frandomize-layout-seed-file=./scripts/basic/randstruct.seed -fno-crash-diagnostics -Wno-error=return-type -Wreturn-type -funsigned-char -Wundef -falign-functions=64 -fsanitize-coverage=trace-pc -fsanitize-coverage=trace-cmp -Ifs/notify/fanotify -Ifs/notify/fanotify -DKBUILD_MODFILE=\"fs/notify/fanotify/fanotify\" -DKBUILD_BASENAME=\"fanotify\" -DKBUILD_MODNAME=\"fanotify\" -D__KBUILD_MODNAME=fanotify -c -o fs/notify/fanotify/fanotify.o fs/notify/fanotify/fanotify.c
   1.	<eof> parser at end of file
   2.	Code generation
   3.	Running pass 'Function Pass Manager' on module 'fs/notify/fanotify/fanotify.c'.
   4.	Running pass 'Branch Probability Basic Block Placement' on function '@fanotify_handle_event'
    #0 0x0000564f1c0c013a llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (clang-23+0x3e6913a)
    #1 0x0000564f1c0bdce4 llvm::sys::CleanupOnSignal(unsigned long) (clang-23+0x3e66ce4)
    #2 0x0000564f1bff2cc0 CrashRecoverySignalHandler(int) CrashRecoveryContext.cpp:0:0
    #3 0x00007fe9fab76df0 (/lib/x86_64-linux-gnu/libc.so.6+0x3fdf0)
    #4 0x0000564f1b6ea50a llvm::TailDuplicator::tailDuplicate(bool, llvm::MachineBasicBlock*, llvm::MachineBasicBlock*, llvm::SmallVectorImpl<llvm::MachineBasicBlock*>&, llvm::SmallVectorImpl<llvm::MachineInstr*>&, llvm::SmallVectorImpl<llvm::MachineBasicBlock*>*) (clang-23+0x349350a)
    #5 0x0000564f1b6ebc15 llvm::TailDuplicator::tailDuplicateAndUpdate(bool, llvm::MachineBasicBlock*, llvm::MachineBasicBlock*, llvm::SmallVectorImpl<llvm::MachineBasicBlock*>*, llvm::function_ref<void (llvm::MachineBasicBlock*)>*, llvm::SmallVectorImpl<llvm::MachineBasicBlock*>*) (clang-23+0x3494c15)
    #6 0x0000564f1b435428 (anonymous namespace)::MachineBlockPlacement::maybeTailDuplicateBlock(llvm::MachineBasicBlock*, llvm::MachineBasicBlock*, (anonymous namespace)::BlockChain&, llvm::SmallSetVector<llvm::MachineBasicBlock const*, 16u>*, llvm::ilist_iterator<llvm::ilist_detail::node_options<llvm::MachineBasicBlock, false, false, void, false, void>, false, false>&, llvm::MachineBasicBlock const* const*&, bool&) MachineBlockPlacement.cpp:0:0
    #7 0x0000564f1b436354 (anonymous namespace)::MachineBlockPlacement::repeatedlyTailDuplicateBlock(llvm::MachineBasicBlock*, llvm::MachineBasicBlock*&, llvm::MachineBasicBlock const*, (anonymous namespace)::BlockChain&, llvm::SmallSetVector<llvm::MachineBasicBlock const*, 16u>*, llvm::ilist_iterator<llvm::ilist_detail::node_options<llvm::MachineBasicBlock, false, false, void, false, void>, false, false>&, llvm::MachineBasicBlock const* const*&) (.isra.0) MachineBlockPlacement.cpp:0:0
    #8 0x0000564f1b439c74 (anonymous namespace)::MachineBlockPlacement::buildCFGChains() MachineBlockPlacement.cpp:0:0
    #9 0x0000564f1b43b003 (anonymous namespace)::MachineBlockPlacement::run(llvm::MachineFunction&) MachineBlockPlacement.cpp:0:0
   #10 0x0000564f1b43e40c (anonymous namespace)::MachineBlockPlacementLegacy::runOnMachineFunction(llvm::MachineFunction&) (.part.0) MachineBlockPlacement.cpp:0:0
   #11 0x0000564f1b4806b3 llvm::MachineFunctionPass::runOnFunction(llvm::Function&) (clang-23+0x32296b3)
   #12 0x0000564f1b9cec79 llvm::FPPassManager::runOnFunction(llvm::Function&) (clang-23+0x3777c79)
   #13 0x0000564f1b9cf0ac llvm::FPPassManager::runOnModule(llvm::Module&) (clang-23+0x37780ac)
   #14 0x0000564f1b9cfc4a (anonymous namespace)::MPPassManager::runOnModule(llvm::Module&) LegacyPassManager.cpp:0:0
   #15 0x0000564f1b9d031c llvm::legacy::PassManagerImpl::run(llvm::Module&) (clang-23+0x377931c)
   #16 0x0000564f1c4681bf (anonymous namespace)::EmitAssemblyHelper::TimeCodegenPasses(llvm::function_ref<void ()>) BackendUtil.cpp:0:0
   #17 0x0000564f1c4795a4 (anonymous namespace)::EmitAssemblyHelper::emitAssembly(clang::BackendAction, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream>>, clang::BackendConsumer*) (.constprop.0) BackendUtil.cpp:0:0
   #18 0x0000564f1c4797f7 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+0x42227f7)
   #19 0x0000564f1caae047 clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&) (clang-23+0x4857047)
   #20 0x0000564f1e4a999c clang::ParseAST(clang::Sema&, bool, bool) (clang-23+0x625299c)
   #21 0x0000564f1ce1181e clang::FrontendAction::Execute() (clang-23+0x4bba81e)
   #22 0x0000564f1cd9ab9e clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (clang-23+0x4b43b9e)
   #23 0x0000564f1cefadc7 clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (clang-23+0x4ca3dc7)
   #24 0x0000564f1912e738 cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (clang-23+0xed7738)
   #25 0x0000564f19126413 ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&, llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem>) driver.cpp:0:0
   #26 0x0000564f19126453 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
   #27 0x0000564f1cb275f9 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
   #28 0x0000564f1bff3023 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (clang-23+0x3d9c023)
   #29 0x0000564f1cb28b4c 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
   #30 0x0000564f1cae4228 clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const*&, bool) const (clang-23+0x488d228)
   #31 0x0000564f1cae51c2 clang::driver::Compilation::ExecuteJobs(clang::driver::JobList const&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&, bool) const (clang-23+0x488e1c2)
   #32 0x0000564f1caf8a0c clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&) (clang-23+0x48a1a0c)
   #33 0x0000564f1912b0d2 clang_main(int, char**, llvm::ToolContext const&) (clang-23+0xed40d2)
   #34 0x0000564f1903fdf9 main (clang-23+0xde8df9)
   #35 0x00007fe9fab60ca8 (/lib/x86_64-linux-gnu/libc.so.6+0x29ca8)
   #36 0x00007fe9fab60d65 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29d65)
   #37 0x0000564f19125e71 _start (clang-23+0xecee71)
   clang: error: clang frontend command failed due to signal (use -v to see invocation)
>> /bin/bash: line 1: 2230751 Segmentation fault      clang -Wp,-MMD,fs/notify/fanotify/.fanotify.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=0xffffffff80040000 -DLINKER_LOAD_ADDRESS=0x80040000 -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 -EL -fno-stack-check -march=mips3 -Wa,--trap -DTOOLCHAIN_SUPPORTS_VIRT -Iarch/mips/include/asm/mach-dec -Iarch/mips/include/asm/mach-generic -fno-asynchronous-unwind-tables -fno-delete-null-pointer-checks -O2 -fstack-protector-strong -fomit-frame-pointer -ftrivial-auto-var-init=zero -fexperimental-late-parse-attributes -fdiagnostics-show-inlining-chain -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 -DRANDSTRUCT -frandomize-layout-seed-file=./scripts/basic/randstruct.seed -fno-crash-diagnostics -Wno-error=return-type -Wreturn-type -funsigned-char -Wundef -falign-functions=64 -fsanitize-coverage=trace-pc -fsanitize-coverage=trace-cmp -Ifs/notify/fanotify -Ifs/notify/fanotify -DKBUILD_MODFILE='"fs/notify/fanotify/fanotify"' -DKBUILD_BASENAME='"fanotify"' -DKBUILD_MODNAME='"fanotify"' -D__KBUILD_MODNAME=fanotify -c -o fs/notify/fanotify/fanotify.o fs/notify/fanotify/fanotify.c

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