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26 Apr 2022 09:03:50 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.90,291,1643702400"; d="scan'208";a="579998498" Received: from lkp-server01.sh.intel.com (HELO 5056e131ad90) ([10.239.97.150]) by orsmga008.jf.intel.com with ESMTP; 26 Apr 2022 09:03:47 -0700 Received: from kbuild by 5056e131ad90 with local (Exim 4.95) (envelope-from ) id 1njNfC-0003mm-6O; Tue, 26 Apr 2022 16:03:42 +0000 Date: Wed, 27 Apr 2022 00:02:55 +0800 From: kernel test robot To: Arnd Bergmann Cc: llvm@lists.linux.dev, kbuild-all@lists.01.org, Linux Memory Management List Subject: [linux-next:master 4800/6873] drivers/usb/host/ehci-omap.c:64:19: warning: unused function 'ehci_read' Message-ID: <202204262345.EXnHaFKI-lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable X-Stat-Signature: sonytzc3w1t6fmzx1797p3tuty3mk8in Authentication-Results: imf22.hostedemail.com; dkim=pass header.d=intel.com header.s=Intel header.b=UiZ0vH8g; spf=none (imf22.hostedemail.com: domain of lkp@intel.com has no SPF policy when checking 192.55.52.88) smtp.mailfrom=lkp@intel.com; dmarc=pass (policy=none) header.from=intel.com X-Rspam-User: X-Rspamd-Server: rspam01 X-Rspamd-Queue-Id: 522C5C0047 X-HE-Tag: 1650989105-104800 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Hi Arnd, First bad commit (maybe !=3D root cause): tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git= master head: 088fb7eff3496e0f61fdf68bda89b81a4d0a4434 commit: 11e002924ddb6f12638532331195a8ab09bbbf7e [4800/6873] usb: omap: avo= id mach/*.h headers config: mips-randconfig-r003-20220426 (https://download.01.org/0day-ci/arch= ive/20220426/202204262345.EXnHaFKI-lkp@intel.com/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 1cddcf= dc3c683b393df1a5c9063252eb60e52818) reproduce (this is a W=3D1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/= make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # install mips cross compiling tool for clang build # apt-get install binutils-mips-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.g= it/commit/?id=3D11e002924ddb6f12638532331195a8ab09bbbf7e git remote add linux-next https://git.kernel.org/pub/scm/linux/kern= el/git/next/linux-next.git git fetch --no-tags linux-next master git checkout 11e002924ddb6f12638532331195a8ab09bbbf7e # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=3D$HOME/0day COMPILER=3Dclang make.cross W=3D= 1 O=3Dbuild_dir ARCH=3Dmips SHELL=3D/bin/bash drivers/usb/host/ fs/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All warnings (new ones prefixed by >>): >> drivers/usb/host/ehci-omap.c:64:19: warning: unused function 'ehci_read' static inline u32 ehci_read(void __iomem u32 reg) ^ fatal error: error in backend: Nested variants found in inline asm strin= g: '.if ( 0x00 ) !=3D -1)) 0x00 ) !=3D -1)) : ($( static struct ftrace_bran= ch_data __attribute__((__aligned__(4))) __attribute__((__section__("_ftrace= _branch"))) __if_trace =3D $( .func =3D __func__, .file =3D "arch/mips/incl= ude/asm/barrier.h", .line =3D 16, $); 0x00 ) !=3D -1)) : $))) ) && ( (1 << = 0) ); .set push; .set mips64r2; .rept 1; sync 0x00; .endr; .set pop; .else;= ; .endif' PLEASE submit a bug report to https://github.com/llvm/llvm-project/issue= s/ and include the crash backtrace, preprocessed source, and associated run= script. Stack dump: 0. Program arguments: clang -Wp,-MMD,drivers/usb/host/.ehci-omap.o.d -no= stdinc -Iarch/mips/include -I./arch/mips/include/generated -Iinclude -I./in= clude -Iarch/mips/include/uapi -I./arch/mips/include/generated/uapi -Iinclu= de/uapi -I./include/generated/uapi -include include/linux/compiler-version.= h -include include/linux/kconfig.h -include include/linux/compiler_types.h = -D__KERNEL__ -DVMLINUX_LOAD_ADDRESS=3D0xffffffff80060000 -DLINKER_LOAD_ADDR= ESS=3D0x80060000 -DDATAOFFSET=3D0 -Qunused-arguments -fmacro-prefix-map=3D= =3D -DKBUILD_EXTRA_WARN1 -Wall -Wundef -Werror=3Dstrict-prototypes -Wno-tri= graphs -fno-strict-aliasing -fno-common -fshort-wchar -fno-PIE -Werror=3Dim= plicit-function-declaration -Werror=3Dimplicit-int -Werror=3Dreturn-type -W= no-format-security -std=3Dgnu11 --target=3Dmips-linux -fintegrated-as -Werr= or=3Dunknown-warning-option -Werror=3Dignored-optimization-argument -mno-ch= eck-zero-division -mabi=3D32 -G 0 -mno-abicalls -fno-pic -pipe -msoft-float= -DGAS_HAS_SET_HARDFLOAT -Wa,-msoft-float -ffreestanding -EB -fno-stack-che= ck -march=3Dmips32r2 -Wa,--trap -DTOOLCHAIN_SUPPORTS_VIRT -Iarch/mips/inclu= de/asm/mach-ath79 -Iarch/mips/include/asm/mach-generic -fno-asynchronous-un= wind-tables -fno-delete-null-pointer-checks -Wno-frame-address -Wno-address= -of-packed-member -O2 -Wframe-larger-than=3D1024 -fstack-protector -Wimplic= it-fallthrough -Wno-gnu -Wno-unused-but-set-variable -Wno-unused-const-vari= able -fno-stack-clash-protection -pg -Wdeclaration-after-statement -Wvla -W= no-pointer-sign -Wcast-function-type -fno-strict-overflow -fno-stack-check = -Werror=3Ddate-time -Werror=3Dincompatible-pointer-types -Wextra -Wunused -= Wno-unused-parameter -Wmissing-declarations -Wmissing-format-attribute -Wmi= ssing-prototypes -Wold-style-definition -Wmissing-include-dirs -Wunused-but= -set-variable -Wunused-const-variable -Wno-missing-field-initializers -Wno-= sign-compare -Wno-type-limits -Wno-shift-negative-value -I drivers/usb/host= -I ./drivers/usb/host -DMODULE -mlong-calls -DKBUILD_BASENAME=3D"ehci_omap= " -DKBUILD_MODNAME=3D"ehci_omap" -D__KBUILD_MODNAME=3Dkmod_ehci_omap -c -o = drivers/usb/host/ehci-omap.o drivers/usb/host/ehci-omap.c 1. parser at end of file 2. Code generation 3. Running pass 'Function Pass Manager' on module 'drivers/usb/host/ehci= -omap.c'. 4. Running pass 'Mips Assembly Printer' on function '@ehci_hcd_omap_prob= e' #0 0x000056015b6d9a2f Signals.cpp:0:0 #1 0x000056015b6d7854 llvm::sys::CleanupOnSignal(unsigned long) (/opt/cr= oss/clang-1cddcfdc3c/bin/clang-15+0x34bf854) #2 0x000056015b616cf7 llvm::CrashRecoveryContext::HandleExit(int) (/opt/= cross/clang-1cddcfdc3c/bin/clang-15+0x33fecf7) #3 0x000056015b6cfe8e llvm::sys::Process::Exit(int, bool) (/opt/cross/cl= ang-1cddcfdc3c/bin/clang-15+0x34b7e8e) #4 0x00005601592d95db (/opt/cross/clang-1cddcfdc3c/bin/clang-15+0x10c15d= b) #5 0x000056015b61d81c llvm::report_fatal_error(llvm::Twine const&, bool)= (/opt/cross/clang-1cddcfdc3c/bin/clang-15+0x340581c) #6 0x000056015c353a30 llvm::AsmPrinter::emitInlineAsm(llvm::MachineInstr= const (/opt/cross/clang-1cddcfdc3c/bin/clang-15+0x413ba30) #7 0x000056015c34f932 llvm::AsmPrinter::emitFunctionBody() (/opt/cross/c= lang-1cddcfdc3c/bin/clang-15+0x4137932) #8 0x0000560159d67f77 llvm::MipsAsmPrinter::runOnMachineFunction(llvm::M= achineFunction&) (/opt/cross/clang-1cddcfdc3c/bin/clang-15+0x1b4ff77) #9 0x000056015aa49f8d llvm::MachineFunctionPass::runOnFunction(llvm::Fun= ction&) (.part.53) MachineFunctionPass.cpp:0:0 #10 0x000056015ae90597 llvm::FPPassManager::runOnFunction(llvm::Function= &) (/opt/cross/clang-1cddcfdc3c/bin/clang-15+0x2c78597) #11 0x000056015ae90711 llvm::FPPassManager::runOnModule(llvm::Module&) (= /opt/cross/clang-1cddcfdc3c/bin/clang-15+0x2c78711) #12 0x000056015ae9128f llvm::legacy::PassManagerImpl::run(llvm::Module&)= (/opt/cross/clang-1cddcfdc3c/bin/clang-15+0x2c7928f) #13 0x000056015ba0434f clang::EmitBackendOutput(clang::DiagnosticsEngine= &, clang::HeaderSearchOptions const&, clang::CodeGenOptions const&, clang::= TargetOptions const&, clang::LangOptions const&, llvm::StringRef, clang::Ba= ckendAction, std::unique_ptr >) (/opt/cross/clang-1cddcfdc3c/bin/clang-15+0x37ec= 34f) #14 0x000056015c678e11 clang::BackendConsumer::HandleTranslationUnit(cla= ng::ASTContext&) (/opt/cross/clang-1cddcfdc3c/bin/clang-15+0x4460e11) #15 0x000056015d1e76b1 clang::ParseAST(clang::Sema&, bool, bool) (/opt/c= ross/clang-1cddcfdc3c/bin/clang-15+0x4fcf6b1) #16 0x000056015c6784d5 clang::CodeGenAction::ExecuteAction() (/opt/cross= /clang-1cddcfdc3c/bin/clang-15+0x44604d5) #17 0x000056015c067be1 clang::FrontendAction::Execute() (/opt/cross/clan= g-1cddcfdc3c/bin/clang-15+0x3e4fbe1) #18 0x000056015bffc5aa clang::CompilerInstance::ExecuteAction(clang::Fro= ntendAction&) (/opt/cross/clang-1cddcfdc3c/bin/clang-15+0x3de45aa) #19 0x000056015c12f2db (/opt/cross/clang-1cddcfdc3c/bin/clang-15+0x3f172= db) #20 0x00005601592dab8c cc1_main(llvm::ArrayRef::callback_fn >, std::__cxx11::basic_string, std::alloca= tor const::'lambda'()>(long) Job.cpp:0:0 #23 0x000056015b616bb3 llvm::CrashRecoveryContext::RunSafely(llvm::funct= ion_ref) (/opt/cross/clang-1cddcfdc3c/bin/clang-15+0x33febb3) #24 0x000056015be8dede clang::driver::CC1Command::Execute(llvm::ArrayRef= >, std::__cxx11::basic_string, std::allocator const (.part.216) Job.cpp:0:0 #25 0x000056015be61757 clang::driver::Compilation::ExecuteCommand(clang:= :driver::Command const&, clang::driver::Command const (/opt/cross/clang-1cd= dcfdc3c/bin/clang-15+0x3c49757) #26 0x000056015be62137 clang::driver::Compilation::ExecuteJobs(clang::dr= iver::JobList const&, llvm::SmallVectorImpl&) const (/opt/cross/clang-1cddcfdc3c/bin/clang-15+0x3c4a137) #27 0x000056015be6bc59 clang::driver::Driver::ExecuteCompilation(clang::= driver::Compilation&, llvm::SmallVectorImpl&) (/opt/cross/clang-1cddcfdc3c/bin/clang-15+0x3c53c59) #28 0x0000560159223a0f main (/opt/cross/clang-1cddcfdc3c/bin/clang-15+0x= 100ba0f) #29 0x00007f54c39607fd __libc_start_main (/lib/x86_64-linux-gnu/libc.so.= 6+0x237fd) #30 0x00005601592d737a _start (/opt/cross/clang-1cddcfdc3c/bin/clang-15+= 0x10bf37a) clang-15: error: clang frontend command failed with exit code 70 (use -v= to see invocation) clang version 15.0.0 (git://gitmirror/llvm_project 1cddcfdc3c683b393df1a= 5c9063252eb60e52818) Target: mips-unknown-linux Thread model: posix InstalledDir: /opt/cross/clang-1cddcfdc3c/bin clang-15: note: diagnostic msg: Makefile arch drivers fs include kernel nr_bisected scripts source usr -- >> drivers/usb/host/ehci-omap.c:64:19: warning: unused function 'ehci_read' static inline u32 ehci_read(void __iomem u32 reg) ^ fatal error: error in backend: Nested variants found in inline asm strin= g: '.if ( 0x00 ) !=3D -1)) 0x00 ) !=3D -1)) : ($( static struct ftrace_bran= ch_data __attribute__((__aligned__(4))) __attribute__((__section__("_ftrace= _branch"))) __if_trace =3D $( .func =3D __func__, .file =3D "arch/mips/incl= ude/asm/barrier.h", .line =3D 16, $); 0x00 ) !=3D -1)) : $))) ) && ( (1 << = 0) ); .set push; .set mips64r2; .rept 1; sync 0x00; .endr; .set pop; .else;= ; .endif' PLEASE submit a bug report to https://github.com/llvm/llvm-project/issue= s/ and include the crash backtrace, preprocessed source, and associated run= script. Stack dump: 0. Program arguments: clang -Wp,-MMD,drivers/usb/host/.ehci-omap.o.d -no= stdinc -Iarch/mips/include -I./arch/mips/include/generated -Iinclude -I./in= clude -Iarch/mips/include/uapi -I./arch/mips/include/generated/uapi -Iinclu= de/uapi -I./include/generated/uapi -include include/linux/compiler-version.= h -include include/linux/kconfig.h -include include/linux/compiler_types.h = -D__KERNEL__ -DVMLINUX_LOAD_ADDRESS=3D0xffffffff80060000 -DLINKER_LOAD_ADDR= ESS=3D0x80060000 -DDATAOFFSET=3D0 -Qunused-arguments -fmacro-prefix-map=3D= =3D -DKBUILD_EXTRA_WARN1 -Wall -Wundef -Werror=3Dstrict-prototypes -Wno-tri= graphs -fno-strict-aliasing -fno-common -fshort-wchar -fno-PIE -Werror=3Dim= plicit-function-declaration -Werror=3Dimplicit-int -Werror=3Dreturn-type -W= no-format-security -std=3Dgnu11 --target=3Dmips-linux -fintegrated-as -Werr= or=3Dunknown-warning-option -Werror=3Dignored-optimization-argument -mno-ch= eck-zero-division -mabi=3D32 -G 0 -mno-abicalls -fno-pic -pipe -msoft-float= -DGAS_HAS_SET_HARDFLOAT -Wa,-msoft-float -ffreestanding -EB -fno-stack-che= ck -march=3Dmips32r2 -Wa,--trap -DTOOLCHAIN_SUPPORTS_VIRT -Iarch/mips/inclu= de/asm/mach-ath79 -Iarch/mips/include/asm/mach-generic -fno-asynchronous-un= wind-tables -fno-delete-null-pointer-checks -Wno-frame-address -Wno-address= -of-packed-member -O2 -Wframe-larger-than=3D1024 -fstack-protector -Wimplic= it-fallthrough -Wno-gnu -Wno-unused-but-set-variable -Wno-unused-const-vari= able -fno-stack-clash-protection -pg -Wdeclaration-after-statement -Wvla -W= no-pointer-sign -Wcast-function-type -fno-strict-overflow -fno-stack-check = -Werror=3Ddate-time -Werror=3Dincompatible-pointer-types -Wextra -Wunused -= Wno-unused-parameter -Wmissing-declarations -Wmissing-format-attribute -Wmi= ssing-prototypes -Wold-style-definition -Wmissing-include-dirs -Wunused-but= -set-variable -Wunused-const-variable -Wno-missing-field-initializers -Wno-= sign-compare -Wno-type-limits -Wno-shift-negative-value -DMODULE -mlong-cal= ls -DKBUILD_BASENAME=3D"ehci_omap" -DKBUILD_MODNAME=3D"ehci_omap" -D__KBUIL= D_MODNAME=3Dkmod_ehci_omap -c -o drivers/usb/host/ehci-omap.o drivers/usb/h= ost/ehci-omap.c 1. parser at end of file 2. Code generation 3. Running pass 'Function Pass Manager' on module 'drivers/usb/host/ehci= -omap.c'. 4. Running pass 'Mips Assembly Printer' on function '@ehci_hcd_omap_prob= e' #0 0x0000558707de5a2f Signals.cpp:0:0 #1 0x0000558707de3854 llvm::sys::CleanupOnSignal(unsigned long) (/opt/cr= oss/clang-1cddcfdc3c/bin/clang-15+0x34bf854) #2 0x0000558707d22cf7 llvm::CrashRecoveryContext::HandleExit(int) (/opt/= cross/clang-1cddcfdc3c/bin/clang-15+0x33fecf7) #3 0x0000558707ddbe8e llvm::sys::Process::Exit(int, bool) (/opt/cross/cl= ang-1cddcfdc3c/bin/clang-15+0x34b7e8e) #4 0x00005587059e55db (/opt/cross/clang-1cddcfdc3c/bin/clang-15+0x10c15d= b) #5 0x0000558707d2981c llvm::report_fatal_error(llvm::Twine const&, bool)= (/opt/cross/clang-1cddcfdc3c/bin/clang-15+0x340581c) #6 0x0000558708a5fa30 llvm::AsmPrinter::emitInlineAsm(llvm::MachineInstr= const (/opt/cross/clang-1cddcfdc3c/bin/clang-15+0x413ba30) #7 0x0000558708a5b932 llvm::AsmPrinter::emitFunctionBody() (/opt/cross/c= lang-1cddcfdc3c/bin/clang-15+0x4137932) #8 0x0000558706473f77 llvm::MipsAsmPrinter::runOnMachineFunction(llvm::M= achineFunction&) (/opt/cross/clang-1cddcfdc3c/bin/clang-15+0x1b4ff77) #9 0x0000558707155f8d llvm::MachineFunctionPass::runOnFunction(llvm::Fun= ction&) (.part.53) MachineFunctionPass.cpp:0:0 #10 0x000055870759c597 llvm::FPPassManager::runOnFunction(llvm::Function= &) (/opt/cross/clang-1cddcfdc3c/bin/clang-15+0x2c78597) #11 0x000055870759c711 llvm::FPPassManager::runOnModule(llvm::Module&) (= /opt/cross/clang-1cddcfdc3c/bin/clang-15+0x2c78711) #12 0x000055870759d28f llvm::legacy::PassManagerImpl::run(llvm::Module&)= (/opt/cross/clang-1cddcfdc3c/bin/clang-15+0x2c7928f) #13 0x000055870811034f clang::EmitBackendOutput(clang::DiagnosticsEngine= &, clang::HeaderSearchOptions const&, clang::CodeGenOptions const&, clang::= TargetOptions const&, clang::LangOptions const&, llvm::StringRef, clang::Ba= ckendAction, std::unique_ptr >) (/opt/cross/clang-1cddcfdc3c/bin/clang-15+0x37ec= 34f) #14 0x0000558708d84e11 clang::BackendConsumer::HandleTranslationUnit(cla= ng::ASTContext&) (/opt/cross/clang-1cddcfdc3c/bin/clang-15+0x4460e11) #15 0x00005587098f36b1 clang::ParseAST(clang::Sema&, bool, bool) (/opt/c= ross/clang-1cddcfdc3c/bin/clang-15+0x4fcf6b1) #16 0x0000558708d844d5 clang::CodeGenAction::ExecuteAction() (/opt/cross= /clang-1cddcfdc3c/bin/clang-15+0x44604d5) #17 0x0000558708773be1 clang::FrontendAction::Execute() (/opt/cross/clan= g-1cddcfdc3c/bin/clang-15+0x3e4fbe1) #18 0x00005587087085aa clang::CompilerInstance::ExecuteAction(clang::Fro= ntendAction&) (/opt/cross/clang-1cddcfdc3c/bin/clang-15+0x3de45aa) #19 0x000055870883b2db (/opt/cross/clang-1cddcfdc3c/bin/clang-15+0x3f172= db) #20 0x00005587059e6b8c cc1_main(llvm::ArrayRef::callback_fn >, std::__cxx11::basic_string, std::alloca= tor const::'lambda'()>(long) Job.cpp:0:0 #23 0x0000558707d22bb3 llvm::CrashRecoveryContext::RunSafely(llvm::funct= ion_ref) (/opt/cross/clang-1cddcfdc3c/bin/clang-15+0x33febb3) #24 0x0000558708599ede clang::driver::CC1Command::Execute(llvm::ArrayRef= >, std::__cxx11::basic_string, std::allocator const (.part.216) Job.cpp:0:0 #25 0x000055870856d757 clang::driver::Compilation::ExecuteCommand(clang:= :driver::Command const&, clang::driver::Command const (/opt/cross/clang-1cd= dcfdc3c/bin/clang-15+0x3c49757) #26 0x000055870856e137 clang::driver::Compilation::ExecuteJobs(clang::dr= iver::JobList const&, llvm::SmallVectorImpl&) const (/opt/cross/clang-1cddcfdc3c/bin/clang-15+0x3c4a137) #27 0x0000558708577c59 clang::driver::Driver::ExecuteCompilation(clang::= driver::Compilation&, llvm::SmallVectorImpl&) (/opt/cross/clang-1cddcfdc3c/bin/clang-15+0x3c53c59) #28 0x000055870592fa0f main (/opt/cross/clang-1cddcfdc3c/bin/clang-15+0x= 100ba0f) #29 0x00007f337b9677fd __libc_start_main (/lib/x86_64-linux-gnu/libc.so.= 6+0x237fd) #30 0x00005587059e337a _start (/opt/cross/clang-1cddcfdc3c/bin/clang-15+= 0x10bf37a) clang-15: error: clang frontend command failed with exit code 70 (use -v= to see invocation) clang version 15.0.0 (git://gitmirror/llvm_project 1cddcfdc3c683b393df1a= 5c9063252eb60e52818) Target: mips-unknown-linux Thread model: posix InstalledDir: /opt/cross/clang-1cddcfdc3c/bin clang-15: note: diagnostic msg: Makefile arch drivers fs include kernel nr_bisected scripts source usr vim +/ehci_read +64 drivers/usb/host/ehci-omap.c 54ab2b02ef6a45 Felipe Balbi 2009-10-14 63 =20 19403165c272cc Keshava Munegowda 2011-03-01 @64 static inline u32 ehci_rea= d(void __iomem *base, u32 reg) 54ab2b02ef6a45 Felipe Balbi 2009-10-14 65 { 54ab2b02ef6a45 Felipe Balbi 2009-10-14 66 return __raw_readl(base += reg); 54ab2b02ef6a45 Felipe Balbi 2009-10-14 67 } 54ab2b02ef6a45 Felipe Balbi 2009-10-14 68 =20 :::::: The code at line 64 was first introduced by commit :::::: 19403165c272cc4ed00c97973e7271714b009708 usb: host: omap: ehci and o= hci simplification :::::: TO: Keshava Munegowda :::::: CC: Felipe Balbi --=20 0-DAY CI Kernel Test Service https://01.org/lkp