Bug 2262260
| Summary: | clang crashes with -fzero-call-used-regs when optimization is enabled | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Daniel Berrangé <berrange> |
| Component: | clang | Assignee: | Nikita Popov <npopov> |
| Status: | CLOSED ERRATA | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
| Severity: | medium | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | 39 | CC: | airlied, jchecahi, kkleine, npopov, sergesanspaille, siddharth.kde, tbaeder, tstellar, tuliom |
| Target Milestone: | --- | Keywords: | Regression |
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2024-02-02 13:01:24 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
Switch to F39, since that has clang 17 already This sounds familiar. I believe https://github.com/llvm/llvm-project/commit/f800c1f3b207e7bcdc8b4c7192928d9a078242a0 is the fix. Confirmed that this commit fixes the issue when fixed on top the 17.x branch. FEDORA-2024-447faac21f has been submitted as an update to Fedora 40. https://bodhi.fedoraproject.org/updates/FEDORA-2024-447faac21f FEDORA-2024-447faac21f has been pushed to the Fedora 40 stable repository. If problem still persists, please make note of it in this bug report. FEDORA-2024-29313e5e1e has been submitted as an update to Fedora 39. https://bodhi.fedoraproject.org/updates/FEDORA-2024-29313e5e1e FEDORA-2024-29313e5e1e has been pushed to the Fedora 39 testing repository. Soon you'll be able to install the update with the following command: `sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2024-29313e5e1e` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2024-29313e5e1e See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates. FEDORA-2024-29313e5e1e (llvm-17.0.6-3.fc39) has been pushed to the Fedora 39 stable repository. If problem still persists, please make note of it in this bug report. |
This demo illustrates the issue $ cat > test.c <<EOF struct QCryptoAkCipher { void (*free)(struct QCryptoAkCipher *akcipher); }; void qcrypto_akcipher_free(struct QCryptoAkCipher *akcipher); void qcrypto_akcipher_free(struct QCryptoAkCipher *akcipher) { akcipher->free(akcipher); } EOF $ clang -c -o test test.c -fzero-call-used-regs=all -O2 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 -c -o test /test.c -fzero-call-used-regs=all -O2 1. <eof> parser at end of file 2. Code generation 3. Running pass 'Function Pass Manager' on module '/test.c'. 4. Running pass 'Prologue/Epilogue Insertion & Frame Finalization' on function '@qcrypto_akcipher_free' Stack dump without symbol names (ensure you have llvm-symbolizer in your PATH or set the environment var `LLVM_SYMBOLIZER_PATH` to point to it): 0 libLLVM-17.so 0x00007fb947feeb7a llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) + 58 1 libLLVM-17.so 0x00007fb947fec534 llvm::sys::RunSignalHandlers() + 84 2 libLLVM-17.so 0x00007fb947f23d14 3 libc.so.6 0x00007fb947351db0 4 libLLVM-17.so 0x00007fb94855cf9f 5 libLLVM-17.so 0x00007fb9484288cc llvm::MachineFunctionPass::runOnFunction(llvm::Function&) + 828 6 libLLVM-17.so 0x00007fb948165575 llvm::FPPassManager::runOnFunction(llvm::Function&) + 1285 7 libLLVM-17.so 0x00007fb94816c2e3 llvm::FPPassManager::runOnModule(llvm::Module&) + 51 8 libLLVM-17.so 0x00007fb948165c2d llvm::legacy::PassManagerImpl::run(llvm::Module&) + 1085 9 libclang-cpp.so.17 0x00007fb94f7f6825 clang::EmitBackendOutput(clang::DiagnosticsEngine&, clang::HeaderSearchOptions const&, clang::CodeGenOptions const&, clang::TargetOptions const&, clang::LangOptions const&, 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>>) + 3445 10 libclang-cpp.so.17 0x00007fb94fbf3048 11 libclang-cpp.so.17 0x00007fb94e59f526 clang::ParseAST(clang::Sema&, bool, bool) + 598 12 libclang-cpp.so.17 0x00007fb9507b5c86 clang::FrontendAction::Execute() + 102 13 libclang-cpp.so.17 0x00007fb950722e40 clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) + 752 14 libclang-cpp.so.17 0x00007fb9508366d4 clang::ExecuteCompilerInvocation(clang::CompilerInstance*) + 580 15 clang 0x0000000000412911 cc1_main(llvm::ArrayRef<char const*>, char const*, void*) + 4097 16 clang 0x000000000040fd25 17 libclang-cpp.so.17 0x00007fb95035cbfd 18 libLLVM-17.so 0x00007fb947f23a54 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) + 148 19 libclang-cpp.so.17 0x00007fb95035c627 clang::driver::CC1Command::Execute(llvm::ArrayRef<std::optional<llvm::StringRef>>, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>>*, bool*) const + 375 20 libclang-cpp.so.17 0x00007fb950322fee clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const*&, bool) const + 878 21 libclang-cpp.so.17 0x00007fb950323257 clang::driver::Compilation::ExecuteJobs(clang::driver::JobList const&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&, bool) const + 167 22 libclang-cpp.so.17 0x00007fb9503405da clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&) + 474 23 clang 0x000000000040f568 clang_main(int, char**, llvm::ToolContext const&) + 11752 24 clang 0x000000000041c036 main + 54 25 libc.so.6 0x00007fb94733ceb0 26 libc.so.6 0x00007fb94733cf60 __libc_start_main + 128 27 clang 0x000000000040c425 _start + 37 clang: error: clang frontend command failed with exit code 139 (use -v to see invocation) clang version 17.0.6 (CentOS 17.0.6-5.el9) Target: x86_64-redhat-linux-gnu Thread model: posix InstalledDir: /usr/bin clang: note: diagnostic msg: ******************** PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT: Preprocessed source(s) and associated run script(s) are located at: clang: note: diagnostic msg: /tmp/test-28f292.c clang: note: diagnostic msg: /tmp/test-28f292.sh clang: note: diagnostic msg: ******************** Does not crash with -O0 Does not crash on non-x86 architecture Does not crash on Fedora 38 with clang 16 This impacts ability to build QEMU (git master) with clang which now enables -fzero-call-used-regs by default Reproducible: Always