From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3DAECC433EF for ; Fri, 14 Jan 2022 12:06:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240957AbiANMGt (ORCPT ); Fri, 14 Jan 2022 07:06:49 -0500 Received: from mga06.intel.com ([134.134.136.31]:27871 "EHLO mga06.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234308AbiANMGs (ORCPT ); Fri, 14 Jan 2022 07:06:48 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1642162007; x=1673698007; h=date:from:to:cc:subject:message-id:mime-version: content-transfer-encoding; bh=ZIUhOU6Sid5WCVgLjNUyWgAAMX091A50+A0U4vTzbbE=; b=PJt8IeUgQzmA5+M+dkO+MZ1DxDa/b9tFaTsdPTefowU54CUXkDfN+Mpy RsxDqtXSP7ajT/mQWZk9qSGGP5JD2MV0kWC7/2T99i9TO9WcUWvB3Z1lt ouBNIfPJaDr+Mu8TvJkglY4C6zlqiieDxLQfGkEyZu5Yoe/yGQAu7AlVN 0dMaNFU+Wwpk9vk7xY/3SsdaPStCn1dxuFHE8magnOXs6KvuR10/J+Y7k JpVhbczxXoe4diQ0CMk9k+xPT+Oql6EC7hHoV8bXpe8GdoPBOdtCbJ4St bnaZTwSt+qh8dRU3UKgOaX5zE8QyShhsD+CZICj6qG6vt0fgdCntuz3Nz Q==; X-IronPort-AV: E=McAfee;i="6200,9189,10226"; a="304965316" X-IronPort-AV: E=Sophos;i="5.88,288,1635231600"; d="scan'208";a="304965316" Received: from orsmga004.jf.intel.com ([10.7.209.38]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 14 Jan 2022 04:06:47 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.88,288,1635231600"; d="scan'208";a="624307278" Received: from lkp-server01.sh.intel.com (HELO 276f1b88eecb) ([10.239.97.150]) by orsmga004.jf.intel.com with ESMTP; 14 Jan 2022 04:06:45 -0800 Received: from kbuild by 276f1b88eecb with local (Exim 4.92) (envelope-from ) id 1n8LLw-0008V5-PX; Fri, 14 Jan 2022 12:06:44 +0000 Date: Fri, 14 Jan 2022 20:06:31 +0800 From: kernel test robot To: Yuntao Wang Cc: llvm@lists.linux.dev, kbuild-all@lists.01.org, linux-kernel@vger.kernel.org, 0day robot Subject: kernel/trace/trace_dynevent.c:258:17: warning: unused variable 'entry' Message-ID: <202201142023.gC8Ssh5U-lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable User-Agent: Mutt/1.10.1 (2018-07-13) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org tree: https://github.com/0day-ci/linux/commits/UPDATE-20220114-091212/Yun= tao-Wang/tracing-Use-trace_create_file-to-simplify-creation-of-tracefs-entr= y/20220114-002617 head: a6d78c971730a1847fa557309f42851ca421b71c commit: a6d78c971730a1847fa557309f42851ca421b71c tracing: Use trace_create_= file() to simplify creation of tracefs entries date: 11 hours ago config: mips-randconfig-r015-20220113 (https://download.01.org/0day-ci/arch= ive/20220114/202201142023.gC8Ssh5U-lkp@intel.com/config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 82c8ac= a93488730ce8f66101e0f3538f14b551dd) 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://github.com/0day-ci/linux/commit/a6d78c971730a1847fa557309= f42851ca421b71c git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review UPDATE-20220114-091212/Yuntao-Wang= /tracing-Use-trace_create_file-to-simplify-creation-of-tracefs-entry/202201= 14-002617 git checkout a6d78c971730a1847fa557309f42851ca421b71c # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=3D$HOME/0day COMPILER=3Dclang make.cross W=3D= 1 O=3Dbuild_dir ARCH=3Dmips SHELL=3D/bin/bash kernel/trace/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All warnings (new ones prefixed by >>): >> kernel/trace/trace_dynevent.c:258:17: warning: unused variable 'entry' struct dentry ^ fatal error: error in backend: Nested variants found in inline asm strin= g: ' .set push .set mips64r2 .if ( 0x00 ) !=3D -1)) 0x00 ) !=3D -1)) : ($( static struct ftrace_branc= h_data __attribute__((__aligned__(4))) __attribute__((__section__("_ftrace_= branch"))) __if_trace =3D $( .func =3D __func__, .file =3D "arch/mips/inclu= de/asm/atomic.h", .line =3D 156, $); 0x00 ) !=3D -1)) : $))) ) && ( 0 ); .s= et push; .set mips64r2; .rept 1; sync 0x00; .endr; .set pop; .else; ; .endif 1: ll $0, $1 # atomic_add addu $0, $2 sc $0, $1 beqz $0, 1b .set pop ' 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,kernel/trace/.trace_dynevent.o.d -n= ostdinc -Iarch/mips/include -I./arch/mips/include/generated -Iinclude -I./i= nclude -Iarch/mips/include/uapi -I./arch/mips/include/generated/uapi -Iincl= ude/uapi -I./include/generated/uapi -include include/linux/compiler-version= =2Eh -include include/linux/kconfig.h -include include/linux/compiler_types= =2Eh -D__KERNEL__ -DVMLINUX_LOAD_ADDRESS=3D0xffffffff84000000 -DLINKER_LOAD= _ADDRESS=3D0x84000000 -DDATAOFFSET=3D0 -Qunused-arguments -fmacro-prefix-ma= p=3D=3D -DKBUILD_EXTRA_WARN1 -Wall -Wundef -Werror=3Dstrict-prototypes -Wno= -trigraphs -fno-strict-aliasing -fno-common -fshort-wchar -fno-PIE -Werror= =3Dimplicit-function-declaration -Werror=3Dimplicit-int -Werror=3Dreturn-ty= pe -Wno-format-security -std=3Dgnu89 --target=3Dmipsel-linux -fintegrated-a= s -Werror=3Dunknown-warning-option -Werror=3Dignored-optimization-argument = -mno-check-zero-division -mabi=3D32 -G 0 -mno-abicalls -fno-pic -pipe -msof= t-float -DGAS_HAS_SET_HARDFLOAT -Wa,-msoft-float -ffreestanding -EL -fno-st= ack-check -march=3Dmips32 -Wa,--trap -DTOOLCHAIN_SUPPORTS_VIRT -Iarch/mips/= include/asm/mach-db1x00 -Iarch/mips/include/asm/mach-au1x00 -Iarch/mips/inc= lude/asm/mach-generic -fno-asynchronous-unwind-tables -fno-delete-null-poin= ter-checks -Wno-frame-address -Wno-address-of-packed-member -O2 -Wframe-lar= ger-than=3D1024 -fstack-protector -Wimplicit-fallthrough -Wno-gnu -mno-glob= al-merge -Wno-unused-but-set-variable -Wno-unused-const-variable -fomit-fra= me-pointer -fno-stack-clash-protection -falign-functions=3D64 -Wdeclaration= -after-statement -Wvla -Wno-pointer-sign -Wno-array-bounds -fno-strict-over= flow -fno-stack-check -Werror=3Ddate-time -Werror=3Dincompatible-pointer-ty= pes -Wextra -Wunused -Wno-unused-parameter -Wmissing-declarations -Wmissing= -format-attribute -Wmissing-prototypes -Wold-style-definition -Wmissing-inc= lude-dirs -Wunused-but-set-variable -Wunused-const-variable -Wno-missing-fi= eld-initializers -Wno-sign-compare -Wno-type-limits -I kernel/trace -I ./ke= rnel/trace -ffunction-sections -fdata-sections -DKBUILD_MODFILE=3D"kernel/t= race/trace_dynevent" -DKBUILD_BASENAME=3D"trace_dynevent" -DKBUILD_MODNAME= =3D"trace_dynevent" -D__KBUILD_MODNAME=3Dkmod_trace_dynevent -c -o kernel/t= race/trace_dynevent.o kernel/trace/trace_dynevent.c 1. parser at end of file 2. Code generation 3. Running pass 'Function Pass Manager' on module 'kernel/trace/trace_dy= nevent.c'. 4. Running pass 'Mips Assembly Printer' on function '@trace_event_dyn_tr= y_get_ref' #0 0x000055d9791aa5cf Signals.cpp:0:0 #1 0x000055d9791a84ac llvm::sys::CleanupOnSignal(unsigned long) (/opt/cr= oss/clang-82c8aca934/bin/clang-14+0x340f4ac) #2 0x000055d9790ec337 llvm::CrashRecoveryContext::HandleExit(int) (/opt/= cross/clang-82c8aca934/bin/clang-14+0x3353337) #3 0x000055d9791a0b5e llvm::sys::Process::Exit(int, bool) (/opt/cross/cl= ang-82c8aca934/bin/clang-14+0x3407b5e) #4 0x000055d976e1e8bb (/opt/cross/clang-82c8aca934/bin/clang-14+0x10858b= b) #5 0x000055d9790f2dec llvm::report_fatal_error(llvm::Twine const&, bool)= (/opt/cross/clang-82c8aca934/bin/clang-14+0x3359dec) #6 0x000055d979dcfd57 llvm::AsmPrinter::emitInlineAsm(llvm::MachineInstr= const (/opt/cross/clang-82c8aca934/bin/clang-14+0x4036d57) #7 0x000055d979dcbcb4 llvm::AsmPrinter::emitFunctionBody() (/opt/cross/c= lang-82c8aca934/bin/clang-14+0x4032cb4) #8 0x000055d97787af17 llvm::MipsAsmPrinter::runOnMachineFunction(llvm::M= achineFunction&) (/opt/cross/clang-82c8aca934/bin/clang-14+0x1ae1f17) #9 0x000055d97851b91d llvm::MachineFunctionPass::runOnFunction(llvm::Fun= ction&) (.part.53) MachineFunctionPass.cpp:0:0 #10 0x000055d9789542f7 llvm::FPPassManager::runOnFunction(llvm::Function= &) (/opt/cross/clang-82c8aca934/bin/clang-14+0x2bbb2f7) #11 0x000055d978954471 llvm::FPPassManager::runOnModule(llvm::Module&) (= /opt/cross/clang-82c8aca934/bin/clang-14+0x2bbb471) #12 0x000055d97895574f llvm::legacy::PassManagerImpl::run(llvm::Module&)= (/opt/cross/clang-82c8aca934/bin/clang-14+0x2bbc74f) #13 0x000055d9794b999a 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-82c8aca934/bin/clang-14+0x3720= 99a) #14 0x000055d97a0e43e3 clang::BackendConsumer::HandleTranslationUnit(cla= ng::ASTContext&) (/opt/cross/clang-82c8aca934/bin/clang-14+0x434b3e3) #15 0x000055d97abe8789 clang::ParseAST(clang::Sema&, bool, bool) (/opt/c= ross/clang-82c8aca934/bin/clang-14+0x4e4f789) #16 0x000055d97a0e323f clang::CodeGenAction::ExecuteAction() (/opt/cross= /clang-82c8aca934/bin/clang-14+0x434a23f) #17 0x000055d979ae6c91 clang::FrontendAction::Execute() (/opt/cross/clan= g-82c8aca934/bin/clang-14+0x3d4dc91) #18 0x000055d979a7e7ba clang::CompilerInstance::ExecuteAction(clang::Fro= ntendAction&) (/opt/cross/clang-82c8aca934/bin/clang-14+0x3ce57ba) #19 0x000055d979baad8b (/opt/cross/clang-82c8aca934/bin/clang-14+0x3e11d= 8b) #20 0x000055d976e1f604 cc1_main(llvm::ArrayRef::callback_fn >, std::__cxx11::basic_string, std::alloca= tor const::'lambda'()>(long) Job.cpp:0:0 #23 0x000055d9790ec1f3 llvm::CrashRecoveryContext::RunSafely(llvm::funct= ion_ref) (/opt/cross/clang-82c8aca934/bin/clang-14+0x33531f3) #24 0x000055d97991b1ce clang::driver::CC1Command::Execute(llvm::ArrayRef= >, std::__cxx11::basic_string, std::allocator const (.part.216) Job.cpp:0:0 #25 0x000055d9798f19f7 clang::driver::Compilation::ExecuteCommand(clang:= :driver::Command const&, clang::driver::Command const (/opt/cross/clang-82c= 8aca934/bin/clang-14+0x3b589f7) #26 0x000055d9798f23d7 clang::driver::Compilation::ExecuteJobs(clang::dr= iver::JobList const&, llvm::SmallVectorImpl&) const (/opt/cross/clang-82c8aca934/bin/clang-14+0x3b593d7) #27 0x000055d9798fbd19 clang::driver::Driver::ExecuteCompilation(clang::= driver::Compilation&, llvm::SmallVectorImpl&) (/opt/cross/clang-82c8aca934/bin/clang-14+0x3b62d19) #28 0x000055d976d470df main (/opt/cross/clang-82c8aca934/bin/clang-14+0x= fae0df) #29 0x00007f98e437cd0a __libc_start_main (/lib/x86_64-linux-gnu/libc.so.= 6+0x26d0a) #30 0x000055d976e1c66a _start (/opt/cross/clang-82c8aca934/bin/clang-14+= 0x108366a) clang-14: error: clang frontend command failed with exit code 70 (use -v= to see invocation) clang version 14.0.0 (git://gitmirror/llvm_project 82c8aca93488730ce8f66= 101e0f3538f14b551dd) Target: mipsel-unknown-linux Thread model: posix InstalledDir: /opt/cross/clang-82c8aca934/bin clang-14: note: diagnostic msg: Makefile arch include kernel nr_bisected scripts source usr vim +/entry +258 kernel/trace/trace_dynevent.c 5448d44c38557f Masami Hiramatsu 2018-11-05 254 =20 5448d44c38557f Masami Hiramatsu 2018-11-05 255 /* Make a tracefs interfac= e for controlling dynamic events */ 5448d44c38557f Masami Hiramatsu 2018-11-05 256 static __init int init_dyn= amic_event(void) 5448d44c38557f Masami Hiramatsu 2018-11-05 257 { 5448d44c38557f Masami Hiramatsu 2018-11-05 @258 struct dentry *entry; 22c36b18263426 Wei Yang 2020-07-12 259 int ret; 5448d44c38557f Masami Hiramatsu 2018-11-05 260 =20 22c36b18263426 Wei Yang 2020-07-12 261 ret =3D tracing_init_dent= ry(); 22c36b18263426 Wei Yang 2020-07-12 262 if (ret) 5448d44c38557f Masami Hiramatsu 2018-11-05 263 return 0; 5448d44c38557f Masami Hiramatsu 2018-11-05 264 =20 a6d78c971730a1 Yuntao Wang 2022-01-14 265 trace_create_file("dynami= c_events", TRACE_MODE_WRITE, NULL, 5448d44c38557f Masami Hiramatsu 2018-11-05 266 NULL, &dynamic_events= _ops); 5448d44c38557f Masami Hiramatsu 2018-11-05 267 =20 5448d44c38557f Masami Hiramatsu 2018-11-05 268 return 0; 5448d44c38557f Masami Hiramatsu 2018-11-05 269 } 5448d44c38557f Masami Hiramatsu 2018-11-05 270 fs_initcall(init_dynamic_e= vent); 86c5426baddae9 Tom Zanussi 2020-01-29 271 =20 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org