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Message-ID: <202202280543.0QW3T3id-lkp@intel.com>
Date: Mon, 28 Feb 2022 05:42:38 +0800
From: kernel test robot <lkp@...el.com>
To: Olivier Langlois <olivier@...llion01.com>,
Jens Axboe <axboe@...nel.dk>
Cc: llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
Pavel Begunkov <asml.silence@...il.com>,
Hao Xu <haoxu@...ux.alibaba.com>,
io-uring <io-uring@...r.kernel.org>,
linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2] io_uring: Add support for napi_busy_poll
Hi Olivier,
Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on linus/master]
[cannot apply to v5.17-rc5 next-20220225]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]
url: https://github.com/0day-ci/linux/commits/Olivier-Langlois/io_uring-Add-support-for-napi_busy_poll/20220228-012140
base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 2293be58d6a18cab800e25e42081bacb75c05752
config: mips-buildonly-randconfig-r006-20220227 (https://download.01.org/0day-ci/archive/20220228/202202280543.0QW3T3id-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project d271fc04d5b97b12e6b797c6067d3c96a8d7470e)
reproduce (this is a W=1 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/65e72f78c66272f7cf0e87dfeef88f5b79de2d91
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Olivier-Langlois/io_uring-Add-support-for-napi_busy_poll/20220228-012140
git checkout 65e72f78c66272f7cf0e87dfeef88f5b79de2d91
# save the config file to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=mips
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>
All warnings (new ones prefixed by >>):
>> fs/io_uring.c:7840:3: warning: comparison of distinct pointer types ('typeof ((to)) (aka 'long long and 'uint64_t (aka 'unsigned long long
do_div(to, 1000);
^~~~~~~~~~~~~~~~
include/asm-generic/div64.h:222:28: note: expanded from macro 'do_div'
(void)(((typeof((n)) == ((uint64_t ~~~~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~
fatal error: error in backend: Nested variants found in inline asm string: ' .set push
.set mips64r2
.if ( 0x00 ) != -1)) 0x00 ) != -1)) : ($( static struct ftrace_branch_data __attribute__((__aligned__(4))) __attribute__((__section__("_ftrace_branch"))) __if_trace = $( .func = __func__, .file = "arch/mips/include/asm/atomic.h", .line = 155, $); 0x00 ) != -1)) : $))) ) && ( 0 ); .set 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/issues/ and include the crash backtrace, preprocessed source, and associated run script.
Stack dump:
0. Program arguments: clang -Wp,-MMD,fs/.io_uring.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__ -DVMLINUX_LOAD_ADDRESS=0xffffffff80002000 -DLINKER_LOAD_ADDRESS=0x80002000 -DDATAOFFSET=0 -Qunused-arguments -fmacro-prefix-map== -DKBUILD_EXTRA_WARN1 -Wall -Wundef -Werror=strict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -fshort-wchar -fno-PIE -Werror=implicit-function-declaration -Werror=implicit-int -Werror=return-type -Wno-format-security -std=gnu89 --target=mips-linux -fintegrated-as -Werror=unknown-warning-option -Werror=ignored-optimization-argument -mno-check-zero-division -mabi=32 -G 0 -mno-abicalls -fno-pic -pipe -msoft-float -DGAS_HAS_SET_HARDFLOAT -Wa,-msoft-float -ffreestanding -EB -fno-stack-check -march=mips32 -Wa,--trap -DTOOLCHAIN_SUPPORTS_VIRT -Iarch/mips/include/asm/mach-lantiq -Iarch/mips/include/asm/mach-lantiq/xway -Iarch/mips/include/asm/mach-generic -fno-asynchronous-unwind-tables -fno-delete-null-pointer-checks -Wno-frame-address -Wno-address-of-packed-member -O2 -Wframe-larger-than=1024 -fstack-protector-strong -Wimplicit-fallthrough -Wno-gnu -mno-global-merge -Wno-unused-but-set-variable -Wno-unused-const-variable -ftrivial-auto-var-init=pattern -fno-stack-clash-protection -pg -Wdeclaration-after-statement -Wvla -Wno-pointer-sign -Wcast-function-type -Wno-array-bounds -fno-strict-overflow -fno-stack-check -Werror=date-time -Werror=incompatible-pointer-types -Wextra -Wunused -Wno-unused-parameter -Wmissing-declarations -Wmissing-format-attribute -Wmissing-prototypes -Wold-style-definition -Wmissing-include-dirs -Wunused-but-set-variable -Wunused-const-variable -Wno-missing-field-initializers -Wno-sign-compare -Wno-type-limits -I fs -I ./fs -DKBUILD_MODFILE="fs/io_uring" -DKBUILD_BASENAME="io_uring" -DKBUILD_MODNAME="io_uring" -D__KBUILD_MODNAME=kmod_io_uring -c -o fs/io_uring.o fs/io_uring.c
1. <eof> parser at end of file
2. Code generation
3. Running pass 'Function Pass Manager' on module 'fs/io_uring.c'.
4. Running pass 'Mips Assembly Printer' on function '@...uring_cancel_generic'
#0 0x000055a23ff64d7f Signals.cpp:0:0
#1 0x000055a23ff62c5c llvm::sys::CleanupOnSignal(unsigned long) (/opt/cross/clang-d271fc04d5/bin/clang-15+0x348ec5c)
#2 0x000055a23fea2fd7 llvm::CrashRecoveryContext::HandleExit(int) (/opt/cross/clang-d271fc04d5/bin/clang-15+0x33cefd7)
#3 0x000055a23ff5b30e llvm::sys::Process::Exit(int, bool) (/opt/cross/clang-d271fc04d5/bin/clang-15+0x348730e)
#4 0x000055a23db86ccb (/opt/cross/clang-d271fc04d5/bin/clang-15+0x10b2ccb)
#5 0x000055a23fea9a8c llvm::report_fatal_error(llvm::Twine const&, bool) (/opt/cross/clang-d271fc04d5/bin/clang-15+0x33d5a8c)
#6 0x000055a240bb35c0 llvm::AsmPrinter::emitInlineAsm(llvm::MachineInstr const (/opt/cross/clang-d271fc04d5/bin/clang-15+0x40df5c0)
#7 0x000055a240baf4f4 llvm::AsmPrinter::emitFunctionBody() (/opt/cross/clang-d271fc04d5/bin/clang-15+0x40db4f4)
#8 0x000055a23e5f0887 llvm::MipsAsmPrinter::runOnMachineFunction(llvm::MachineFunction&) (/opt/cross/clang-d271fc04d5/bin/clang-15+0x1b1c887)
#9 0x000055a23f2ad54d llvm::MachineFunctionPass::runOnFunction(llvm::Function&) (.part.53) MachineFunctionPass.cpp:0:0
#10 0x000055a23f6f4807 llvm::FPPassManager::runOnFunction(llvm::Function&) (/opt/cross/clang-d271fc04d5/bin/clang-15+0x2c20807)
#11 0x000055a23f6f4981 llvm::FPPassManager::runOnModule(llvm::Module&) (/opt/cross/clang-d271fc04d5/bin/clang-15+0x2c20981)
#12 0x000055a23f6f54ff llvm::legacy::PassManagerImpl::run(llvm::Module&) (/opt/cross/clang-d271fc04d5/bin/clang-15+0x2c214ff)
#13 0x000055a24027f147 clang::EmitBackendOutput(clang::DiagnosticsEngine&, clang::HeaderSearchOptions const&, clang::CodeGenOptions const&, clang::TargetOptions const&, clang::LangOptions const&, llvm::StringRef, clang::BackendAction, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream> >) (/opt/cross/clang-d271fc04d5/bin/clang-15+0x37ab147)
#14 0x000055a240ecd693 clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&) (/opt/cross/clang-d271fc04d5/bin/clang-15+0x43f9693)
#15 0x000055a2419a86e9 clang::ParseAST(clang::Sema&, bool, bool) (/opt/cross/clang-d271fc04d5/bin/clang-15+0x4ed46e9)
#16 0x000055a240ecc4cf clang::CodeGenAction::ExecuteAction() (/opt/cross/clang-d271fc04d5/bin/clang-15+0x43f84cf)
#17 0x000055a2408cf561 clang::FrontendAction::Execute() (/opt/cross/clang-d271fc04d5/bin/clang-15+0x3dfb561)
#18 0x000055a240865faa clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/opt/cross/clang-d271fc04d5/bin/clang-15+0x3d91faa)
#19 0x000055a240993cbb (/opt/cross/clang-d271fc04d5/bin/clang-15+0x3ebfcbb)
#20 0x000055a23db8827c cc1_main(llvm::ArrayRef<char char (/opt/cross/clang-d271fc04d5/bin/clang-15+0x10b427c)
#21 0x000055a23db84f4b ExecuteCC1Tool(llvm::SmallVectorImpl<char driver.cpp:0:0
#22 0x000055a2406fed95 void llvm::function_ref<void ()>::callback_fn<clang::driver::CC1Command::Execute(llvm::ArrayRef<llvm::Optional<llvm::StringRef> >, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> const::'lambda'()>(long) Job.cpp:0:0
#23 0x000055a23fea2e93 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/opt/cross/clang-d271fc04d5/bin/clang-15+0x33cee93)
#24 0x000055a2406ff68e clang::driver::CC1Command::Execute(llvm::ArrayRef<llvm::Optional<llvm::StringRef> >, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> const (.part.216) Job.cpp:0:0
#25 0x000055a2406d4267 clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const (/opt/cross/clang-d271fc04d5/bin/clang-15+0x3c00267)
#26 0x000055a2406d4c47 clang::driver::Compilation::ExecuteJobs(clang::driver::JobList const&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command >&) const (/opt/cross/clang-d271fc04d5/bin/clang-15+0x3c00c47)
#27 0x000055a2406de2f9 clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command >&) (/opt/cross/clang-d271fc04d5/bin/clang-15+0x3c0a2f9)
#28 0x000055a23daad63f main (/opt/cross/clang-d271fc04d5/bin/clang-15+0xfd963f)
#29 0x00007f38edb9bd0a __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x26d0a)
#30 0x000055a23db84a6a _start (/opt/cross/clang-d271fc04d5/bin/clang-15+0x10b0a6a)
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 d271fc04d5b97b12e6b797c6067d3c96a8d7470e)
Target: mips-unknown-linux
Thread model: posix
InstalledDir: /opt/cross/clang-d271fc04d5/bin
clang-15: note: diagnostic msg:
Makefile arch block certs crypto drivers fs include init ipc kernel lib mm net nr_bisected scripts security sound source usr virt
vim +7840 fs/io_uring.c
7826
7827 #ifdef CONFIG_NET_RX_BUSY_POLL
7828 static void io_adjust_busy_loop_timeout(struct timespec64 *ts,
7829 struct io_wait_queue *iowq)
7830 {
7831 unsigned busy_poll_to = READ_ONCE(sysctl_net_busy_poll);
7832 struct timespec64 pollto = ns_to_timespec64(1000 * (s64)busy_poll_to);
7833
7834 if (timespec64_compare(ts, &pollto) > 0) {
7835 *ts = timespec64_sub(*ts, pollto);
7836 iowq->busy_poll_to = busy_poll_to;
7837 } else {
7838 s64 to = timespec64_to_ns(ts);
7839
> 7840 do_div(to, 1000);
7841 iowq->busy_poll_to = to;
7842 ts->tv_sec = 0;
7843 ts->tv_nsec = 0;
7844 }
7845 }
7846
---
0-DAY CI Kernel Test Service, Intel Corporation
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