clang crashed with SIGSEGV in llvm::DIEEntry::EmitValue()

[Chris Halse Rogers]

I've hit a reproducible crasher in clang when compiling a C++ source file:

0 libLLVM-3.4.so.1 0x00002aaaabb293a2 llvm::sys::PrintStackTrace(_IO_FILE*) + 34
1 libLLVM-3.4.so.1 0x00002aaaabb29209
2 libpthread.so.0 0x00002aaaac39bbd0
3 libLLVM-3.4.so.1 0x00002aaaab2b4d6a llvm::DIEEntry::EmitValue(llvm::AsmPrinter*, unsigned int) const + 10
4 libLLVM-3.4.so.1 0x00002aaaab2c63e0 llvm::DwarfDebug::emitDIE(llvm::DIE*, std::vector<llvm::DIEAbbrev*, std::allocator<llvm::DIEAbbrev*> >*) + 592
5 libLLVM-3.4.so.1 0x00002aaaab2c6579 llvm::DwarfDebug::emitDIE(llvm::DIE*, std::vector<llvm::DIEAbbrev*, std::allocator<llvm::DIEAbbrev*> >*) + 1001
6 libLLVM-3.4.so.1 0x00002aaaab2c6579 llvm::DwarfDebug::emitDIE(llvm::DIE*, std::vector<llvm::DIEAbbrev*, std::allocator<llvm::DIEAbbrev*> >*) + 1001
7 libLLVM-3.4.so.1 0x00002aaaab2c6579 llvm::DwarfDebug::emitDIE(llvm::DIE*, std::vector<llvm::DIEAbbrev*, std::allocator<llvm::DIEAbbrev*> >*) + 1001
8 libLLVM-3.4.so.1 0x00002aaaab2c6579 llvm::DwarfDebug::emitDIE(llvm::DIE*, std::vector<llvm::DIEAbbrev*, std::allocator<llvm::DIEAbbrev*> >*) + 1001
9 libLLVM-3.4.so.1 0x00002aaaab2c6579 llvm::DwarfDebug::emitDIE(llvm::DIE*, std::vector<llvm::DIEAbbrev*, std::allocator<llvm::DIEAbbrev*> >*) + 1001
10 libLLVM-3.4.so.1 0x00002aaaab2c6a26 llvm::DwarfUnits::emitUnits(llvm::DwarfDebug*, llvm::MCSection const*, llvm::MCSection const*, llvm::MCSymbol const*) + 518
11 libLLVM-3.4.so.1 0x00002aaaab2cffe2 llvm::DwarfDebug::endModule() + 546
12 libLLVM-3.4.so.1 0x00002aaaab2af010 llvm::AsmPrinter::doFinalization(llvm::Module&) + 496
13 libLLVM-3.4.so.1 0x00002aaaab54ec85 llvm::FPPassManager::doFinalization(llvm::Module&) + 69
14 libLLVM-3.4.so.1 0x00002aaaab555475 llvm::MPPassManager::runOnModule(llvm::Module&) + 613
15 libLLVM-3.4.so.1 0x00002aaaab55757c llvm::PassManagerImpl::run(llvm::Module&) + 172
16 clang 0x000000000078fedc clang::EmitBackendOutput(clang::DiagnosticsEngine&, clang::CodeGenOptions const&, clang::TargetOptions const&, clang::LangOptions const&, llvm::Module*, clang::BackendAction, llvm::raw_ostream*) + 2220
17 clang 0x000000000078de97
18 clang 0x00000000008e0edb clang::ParseAST(clang::Sema&, bool, bool) + 507
19 clang 0x0000000000645699 clang::FrontendAction::Execute() + 169
20 clang 0x0000000000626ca2 clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) + 290
21 clang 0x0000000000612907 clang::ExecuteCompilerInvocation(clang::CompilerInstance*) + 1607
22 clang 0x000000000060dcb8 cc1_main(char const**, char const**, char const*, void*) + 1224
23 clang 0x000000000060c6be main + 7822
24 libc.so.6 0x00002aaaacae4ea5 __libc_start_main + 245
25 clang 0x000000000060ccb5
Stack dump:
0. Program arguments: /usr/bin/clang -cc1 -triple x86_64-pc-linux-gnu -emit-obj -disable-free -disable-llvm-verifier -main-file-name test_surfaceloop.cpp -mrelocation-model pic -pic-level 2 -relaxed-aliasing -fmath-errno -masm-verbose -mconstructor-aliases -munwind-tables -fuse-init-array -target-cpu x86-64 -target-linker-version 2.23.52.20130620 -momit-leaf-frame-pointer -g -coverage-file /home/chris/Canonical/Mir/mir/build/tests/integration-tests/CMakeFiles/integration-tests.dir/test_surfaceloop.cpp.o -resource-dir /usr/bin/../lib/clang/3.4 -include /home/chris/Canonical/Mir/mir/udev-wrapper/3rd_party/android-input/android/system/core/include/arch/ubuntu-x86/AndroidConfig.h -D ANDROID_USE_STD -D __GBM__ -D NDEBUG -D USING_STD_CPP11 -I /home/chris/Canonical/Mir/mir/udev-wrapper/include/shared -I /home/chris/Canonical/Mir/mir/udev-wrapper/3rd_party/libancillary -I /home/chris/Canonical/Mir/mir/udev-wrapper/3rd_party/android-deps -I /home/chris/Canonical/Mir/mir/udev-wrapper/3rd_party/android-input/android/frameworks/base/services/input -I /home/chris/Canonical/Mir/mir/udev-wrapper/3rd_party/android-input/android/frameworks/base/include -I /home/chris/Canonical/Mir/mir/udev-wrapper/3rd_party/android-input/android/frameworks/native/include -I /home/chris/Canonical/Mir/mir/udev-wrapper/3rd_party/android-input/android/hardware/libhardware_legacy/include -I /home/chris/Canonical/Mir/mir/udev-wrapper/3rd_party/android-input/android/system/core/include -I /home/chris/Canonical/Mir/mir/udev-wrapper/3rd_party/android-input/android/system/extras/ext4_utils -I /home/chris/Canonical/Mir/mir/udev-wrapper/3rd_party/android-input/android/external/kernel-headers/original -I /home/chris/Canonical/Mir/mir/build/src/shared/protobuf -I /home/chris/Canonical/Mir/mir/udev-wrapper/3rd_party/gmock/include -I /home/chris/Canonical/Mir/mir/udev-wrapper/3rd_party/gmock/gtest/include -I /home/chris/Canonical/Mir/mir/udev-wrapper/include/server -I /home/chris/Canonical/Mir/mir/udev-wrapper/include/client -I /home/chris/Canonical/Mir/mir/udev-wrapper/include/test -I /home/chris/Canonical/Mir/mir/udev-wrapper -I /usr/include/libdrm -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../include/c++/4.8 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../include/c++/4.8/x86_64-linux-gnu -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../include/c++/4.8/backward -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../include/x86_64-linux-gnu/c++/4.8 -internal-isystem /usr/local/include -internal-isystem /usr/bin/../lib/clang/3.4/include -internal-isystem /usr/include/clang/3.4/include/ -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /usr/include -O2 -Werror -Wall -Wnon-virtual-dtor -Wextra -Wno-return-type-c-linkage -Wno-error=null-dereference -Wno-error=overloaded-virtual -pedantic -std=c++0x -fdeprecated-macro -fdebug-compilation-dir /home/chris/Canonical/Mir/mir/build/tests/integration-tests -ferror-limit 19 -fmessage-length 170 -mstackrealign -fobjc-runtime=gcc -fobjc-default-synthesize-properties -fcxx-exceptions -fexceptions -fdiagnostics-show-option -fcolor-diagnostics -backend-option -vectorize-loops -o CMakeFiles/integration-tests.dir/test_surfaceloop.cpp.o -x c++ /home/chris/Canonical/Mir/mir/udev-wrapper/tests/integration-tests/test_surfaceloop.cpp
1. <eof> parser at end of file
2. Code generation
clang: error: unable to execute command: Segmentation fault (core dumped)
clang: error: clang frontend command failed due to signal (use -v to see invocation)
Ubuntu clang version 3.4-1 (trunk) (based on LLVM 3.4)
Target: x86_64-pc-linux-gnu
Thread model: posix
clang: note: diagnostic msg: PLEASE submit a bug report to http://bugs.debian.org/ and include the crash backtrace, preprocessed source, and associated run script.
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_surfaceloop-uLqs4n.cpp
clang: note: diagnostic msg: /tmp/test_surfaceloop-uLqs4n.sh
clang: note: diagnostic msg:

********************

ProblemType: Crash
DistroRelease: Ubuntu 13.10
Package: clang-3.4 1:3.4~svn183914-1
ProcVersionSignature: Ubuntu 3.10.0-2.9-generic 3.10.0
Uname: Linux 3.10.0-2-generic x86_64
ApportVersion: 2.10.2-0ubuntu3
Architecture: amd64
Date: Fri Jul 5 16:30:44 2013
EcryptfsInUse: Yes
ExecutablePath: /usr/bin/clang
InstallationDate: Installed on 2013-05-06 (59 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130423.1)
MarkForUpload: True
SegvAnalysis:
 Segfault happened at: 0x2aaaab2b4d6a <_ZNK4llvm8DIEEntry9EmitValueEPNS_10AsmPrinterEj+10>: mov 0x8(%rdx),%esi
 PC (0x2aaaab2b4d6a) ok
 source "0x8(%rdx)" (0x00000008) not located in a known VMA region (needed readable region)!
 destination "%esi" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: llvm-toolchain-snapshot
StacktraceTop:
 llvm::DIEEntry::EmitValue(llvm::AsmPrinter*, unsigned int) const () from /usr/lib/x86_64-linux-gnu/libLLVM-3.4.so.1
 llvm::DwarfDebug::emitDIE(llvm::DIE*, std::vector<llvm::DIEAbbrev*, std::allocator<llvm::DIEAbbrev*> >*) () from /usr/lib/x86_64-linux-gnu/libLLVM-3.4.so.1
 llvm::DwarfDebug::emitDIE(llvm::DIE*, std::vector<llvm::DIEAbbrev*, std::allocator<llvm::DIEAbbrev*> >*) () from /usr/lib/x86_64-linux-gnu/libLLVM-3.4.so.1
 llvm::DwarfDebug::emitDIE(llvm::DIE*, std::vector<llvm::DIEAbbrev*, std::allocator<llvm::DIEAbbrev*> >*) () from /usr/lib/x86_64-linux-gnu/libLLVM-3.4.so.1
 llvm::DwarfDebug::emitDIE(llvm::DIE*, std::vector<llvm::DIEAbbrev*, std::allocator<llvm::DIEAbbrev*> >*) () from /usr/lib/x86_64-linux-gnu/libLLVM-3.4.so.1
Title: clang crashed with SIGSEGV in llvm::DIEEntry::EmitValue()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sbuild sudo

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[Matthias Klose (doko)]

closing for the snapshot package. please reopen and reassign to the 3.4 and/or 3.5 packages if appropriate.