[llvm] [BOLT] fix race condition in multi-threaded DWO type unit processing (PR #197359)
via llvm-commits
llvm-commits at lists.llvm.org
Wed May 13 00:32:52 PDT 2026
Thrrreeee wrote:
Hi @aaupov ，
Here are my partial results from TSAN (ThreadSanitizer) detection.
```
WARNING: ThreadSanitizer: data race (pid=725727)
Read of size 8 at 0x7b3400000d10 by thread T3:
#0 llvm::bolt::DIEBuilder::buildTypeUnits(llvm::bolt::DebugStrOffsetsWriter*, bool) /home/jinrui/llvm-pr/bolt/lib/Core/DIEBuilder.cpp:277 (llvm-bolt+0x19f5d23)
#1 llvm::bolt::DIEBuilder::buildDWOUnit(llvm::DWARFUnit&) /home/jinrui/llvm-pr/bolt/lib/Core/DIEBuilder.cpp:361 (llvm-bolt+0x19f6dba)
#2 operator() /home/jinrui/llvm-pr/bolt/lib/Rewrite/DWARFRewriter.cpp:658 (llvm-bolt+0xdee601)
#3 operator() /home/jinrui/llvm-pr/bolt/lib/Rewrite/DWARFRewriter.cpp:765 (llvm-bolt+0xdf02f6)
#4 CallImpl<llvm::bolt::DWARFRewriter::updateDebugInfo()::<lambda()> > /home/jinrui/llvm-pr/llvm/include/llvm/ADT/FunctionExtras.h:211 (llvm-bolt+0xdf02f6)
#5 llvm::unique_function<void ()>::operator()() /home/jinrui/llvm-pr/llvm/include/llvm/ADT/FunctionExtras.h:361 (llvm-bolt+0xdcd366)
#6 void std::__invoke_impl<void, llvm::unique_function<void ()>>(std::__invoke_other, llvm::unique_function<void ()>&&) /usr/include/c++/8/bits/invoke.h:60 (llvm-bolt+0xdcd366)
#7 std::__invoke_result<llvm::unique_function<void ()>>::type std::__invoke<llvm::unique_function<void ()>>(llvm::unique_function<void ()>&&) /usr/include/c++/8/bits/invoke.h:95 (llvm-bolt+0xdcd366)
#8 decltype (__invoke((_S_declval<0ul>)())) std::thread::_Invoker<std::tuple<llvm::unique_function<void ()> > >::_M_invoke<0ul>(std::_Index_tuple<0ul>) /usr/include/c++/8/thread:244 (llvm-bolt+0xdcd366)
#9 std::thread::_Invoker<std::tuple<llvm::unique_function<void ()> > >::operator()() /usr/include/c++/8/thread:253 (llvm-bolt+0xdcd366)
#10 std::__future_base::_Task_setter<std::unique_ptr<std::__future_base::_Result<void>, std::__future_base::_Result_base::_Deleter>, std::thread::_Invoker<std::tuple<llvm::unique_function<void ()> > >, void>::operator()() const /usr/include/c++/8/future:1362 (llvm-bolt+0xdcd366)
#11 std::_Function_handler<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> (), std::__future_base::_Task_setter<std::unique_ptr<std::__future_base::_Result<void>, std::__future_base::_Result_base::_Deleter>, std::thread::_Invoker<std::tuple<llvm::unique_function<void ()> > >, void> >::_M_invoke(std::_Any_data const&) /usr/include/c++/8/bits/std_function.h:283 (llvm-bolt+0xdcd366)
#12 std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>::operator()() const /usr/include/c++/8/bits/std_function.h:687 (llvm-bolt+0xdcd5bc)
#13 std::__future_base::_State_baseV2::_M_do_set(std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>*, bool*) /usr/include/c++/8/future:561 (llvm-bolt+0xdcd5bc)
#14 void std::__invoke_impl<void, void (std::__future_base::_State_baseV2::*)(std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>*, bool*), std::__future_base::_State_baseV2*, std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>*, bool*>(std::__invoke_memfun_deref, void (std::__future_base::_State_baseV2::*&&)(std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>*, bool*), std::__future_base::_State_baseV2*&&, std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>*&&, bool*&&) /usr/include/c++/8/bits/invoke.h:73 (llvm-bolt+0xdcd554)
#15 std::__invoke_result<void (std::__future_base::_State_baseV2::*)(std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>*, bool*), std::__future_base::_State_baseV2*, std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>*, bool*>::type std::__invoke<void (std::__future_base::_State_baseV2::*)(std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>*, bool*), std::__future_base::_State_baseV2*, std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>*, bool*>(void (std::__future_base::_State_baseV2::*&&)(std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>*, bool*), std::__future_base::_State_baseV2*&&, std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>*&&, bool*&&) /usr/include/c++/8/bits/invoke.h:95 (llvm-bolt+0xdcd554)
#16 std::call_once<void (std::__future_base::_State_baseV2::*)(std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>*, bool*), std::__future_base::_State_baseV2*, std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>*, bool*>(std::once_flag&, void (std::__future_base::_State_baseV2::*&&)(std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>*, bool*), std::__future_base::_State_baseV2*&&, std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>*&&, bool*&&)::{lambda()#1}::operator()() const /usr/include/c++/8/mutex:672 (llvm-bolt+0xdcd554)
#17 std::call_once<void (std::__future_base::_State_baseV2::*)(std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>*, bool*), std::__future_base::_State_baseV2*, std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>*, bool*>(std::once_flag&, void (std::__future_base::_State_baseV2::*&&)(std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>*, bool*), std::__future_base::_State_baseV2*&&, std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>*&&, bool*&&)::{lambda()#2}::operator()() const /usr/include/c++/8/mutex:677 (llvm-bolt+0xdcd554)
#18 std::call_once<void (std::__future_base::_State_baseV2::*)(std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>*, bool*), std::__future_base::_State_baseV2*, std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>*, bool*>(std::once_flag&, void (std::__future_base::_State_baseV2::*&&)(std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>*, bool*), std::__future_base::_State_baseV2*&&, std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>*&&, bool*&&)::{lambda()#2}::_FUN() /usr/include/c++/8/mutex:677 (llvm-bolt+0xdcd554)
#19 pthread_once <null> (libtsan.so.0+0x2d8d9)
#20 __gthread_once /usr/include/x86_64-linux-gnu/c++/8/bits/gthr-default.h:699 (llvm-bolt+0xdcc9d2)
#21 void std::call_once<void (std::__future_base::_State_baseV2::*)(std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>*, bool*), std::__future_base::_State_baseV2*, std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>*, bool*>(std::once_flag&, void (std::__future_base::_State_baseV2::*&&)(std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>*, bool*), std::__future_base::_State_baseV2*&&, std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>*&&, bool*&&) /usr/include/c++/8/mutex:684 (llvm-bolt+0xdcc9d2)
#22 std::__future_base::_State_baseV2::_M_set_result(std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>, bool) /usr/include/c++/8/future:401 (llvm-bolt+0xdcc9d2)
#23 std::__future_base::_Deferred_state<std::thread::_Invoker<std::tuple<llvm::unique_function<void ()> > >, void>::_M_complete_async() /usr/include/c++/8/future:1615 (llvm-bolt+0xdcc9d2)
#24 std::__future_base::_State_baseV2::wait() /usr/include/c++/8/future:334 (llvm-bolt+0xdcdcc0)
#25 std::__basic_future<void>::wait() const /usr/include/c++/8/future:692 (llvm-bolt+0xdcdcc0)
#26 llvm::ThreadPoolInterface::asyncImpl<void>(llvm::unique_function<void ()>, llvm::ThreadPoolTaskGroup*)::{lambda()#1}::operator()() const /home/jinrui/llvm-pr/llvm/include/llvm/Support/ThreadPool.h:116 (llvm-bolt+0xdcdcc0)
#27 void llvm::detail::UniqueFunctionBase<void>::CallImpl<llvm::ThreadPoolInterface::asyncImpl<void>(llvm::unique_function<void ()>, llvm::ThreadPoolTaskGroup*)::{lambda()#1}>(void*) /home/jinrui/llvm-pr/llvm/include/llvm/ADT/FunctionExtras.h:211 (llvm-bolt+0xdcdcc0)
#28 llvm::unique_function<void ()>::operator()() /home/jinrui/llvm-pr/llvm/include/llvm/ADT/FunctionExtras.h:361 (llvm-bolt+0x30e89fa)
#29 llvm::StdThreadPool::processTasks(llvm::ThreadPoolTaskGroup*) /home/jinrui/llvm-pr/llvm/lib/Support/ThreadPool.cpp:119 (llvm-bolt+0x30e89fa)
#30 operator() /home/jinrui/llvm-pr/llvm/lib/Support/ThreadPool.cpp:62 (llvm-bolt+0x30ea239)
#31 operator()<llvm::StdThreadPool::grow(int)::<lambda()>&> /home/jinrui/llvm-pr/llvm/include/llvm/Support/thread.h:46 (llvm-bolt+0x30ea239)
#32 __invoke_impl<void, llvm::thread::GenericThreadProxy(void*) [with CalleeTuple = std::tuple<llvm::StdThreadPool::grow(int)::<lambda()> >]::<lambda(auto:4&&, auto:5&& ...)>, llvm::StdThreadPool::grow(int)::<lambda()>&> /usr/include/c++/8/bits/invoke.h:60 (llvm-bolt+0x30ea239)
#33 __invoke<llvm::thread::GenericThreadProxy(void*) [with CalleeTuple = std::tuple<llvm::StdThreadPool::grow(int)::<lambda()> >]::<lambda(auto:4&&, auto:5&& ...)>, llvm::StdThreadPool::grow(int)::<lambda()>&> /usr/include/c++/8/bits/invoke.h:95 (llvm-bolt+0x30ea239)
#34 __apply_impl<llvm::thread::GenericThreadProxy(void*) [with CalleeTuple = std::tuple<llvm::StdThreadPool::grow(int)::<lambda()> >]::<lambda(auto:4&&, auto:5&& ...)>, std::tuple<llvm::StdThreadPool::grow(int)::<lambda()> >&, 0> /usr/include/c++/8/tuple:1678 (llvm-bolt+0x30ea239)
#35 apply<llvm::thread::GenericThreadProxy(void*) [with CalleeTuple = std::tuple<llvm::StdThreadPool::grow(int)::<lambda()> >]::<lambda(auto:4&&, auto:5&& ...)>, std::tuple<llvm::StdThreadPool::grow(int)::<lambda()> >&> /usr/include/c++/8/tuple:1687 (llvm-bolt+0x30ea239)
#36 GenericThreadProxy<std::tuple<llvm::StdThreadPool::grow(int)::<lambda()> > > /home/jinrui/llvm-pr/llvm/include/llvm/Support/thread.h:44 (llvm-bolt+0x30ea239)
#37 ThreadProxy<std::tuple<llvm::StdThreadPool::grow(int)::<lambda()> > > /home/jinrui/llvm-pr/llvm/include/llvm/Support/thread.h:62 (llvm-bolt+0x30ea239)
#38 <null> <null> (libtsan.so.0+0x29b3d)
Previous write of size 8 at 0x7b3400000d10 by thread T10:
[failed to restore the stack]
Location is heap block of size 200 at 0x7b3400000d00 allocated by thread T10:
#0 operator new[](unsigned long) <null> (libtsan.so.0+0x6f94a)
#1 std::_MakeUniq<llvm::DWARFUnitIndex::Entry []>::__array std::make_unique<llvm::DWARFUnitIndex::Entry []>(unsigned long) /usr/include/c++/8/bits/unique_ptr.h:837 (llvm-bolt+0x2c08570)
#2 llvm::DWARFUnitIndex::parseImpl(llvm::DataExtractor) /home/jinrui/llvm-pr/llvm/lib/DebugInfo/DWARF/DWARFUnitIndex.cpp:147 (llvm-bolt+0x2c08570)
#3 llvm::DWARFUnitIndex::parse(llvm::DataExtractor) /home/jinrui/llvm-pr/llvm/lib/DebugInfo/DWARF/DWARFUnitIndex.cpp:122 (llvm-bolt+0x2c08ceb)
#4 getTUIndex /home/jinrui/llvm-pr/llvm/lib/DebugInfo/DWARF/DWARFContext.cpp:344 (llvm-bolt+0x2b7e0b8)
#5 llvm::DWARFContext::getTUIndex() /home/jinrui/llvm-pr/llvm/lib/DebugInfo/DWARF/DWARFContext.cpp:1427 (llvm-bolt+0x2b7ea7c)
#6 llvm::bolt::DIEBuilder::buildTypeUnits(llvm::bolt::DebugStrOffsetsWriter*, bool) /home/jinrui/llvm-pr/bolt/lib/Core/DIEBuilder.cpp:274 (llvm-bolt+0x19f5964)
#7 llvm::bolt::DIEBuilder::buildDWOUnit(llvm::DWARFUnit&) /home/jinrui/llvm-pr/bolt/lib/Core/DIEBuilder.cpp:361 (llvm-bolt+0x19f6dba)
#8 operator() /home/jinrui/llvm-pr/bolt/lib/Rewrite/DWARFRewriter.cpp:658 (llvm-bolt+0xdee601)
#9 operator() /home/jinrui/llvm-pr/bolt/lib/Rewrite/DWARFRewriter.cpp:765 (llvm-bolt+0xdf02f6)
#10 CallImpl<llvm::bolt::DWARFRewriter::updateDebugInfo()::<lambda()> > /home/jinrui/llvm-pr/llvm/include/llvm/ADT/FunctionExtras.h:211 (llvm-bolt+0xdf02f6)
#11 llvm::unique_function<void ()>::operator()() /home/jinrui/llvm-pr/llvm/include/llvm/ADT/FunctionExtras.h:361 (llvm-bolt+0xdcd366)
#12 void std::__invoke_impl<void, llvm::unique_function<void ()>>(std::__invoke_other, llvm::unique_function<void ()>&&) /usr/include/c++/8/bits/invoke.h:60 (llvm-bolt+0xdcd366)
#13 std::__invoke_result<llvm::unique_function<void ()>>::type std::__invoke<llvm::unique_function<void ()>>(llvm::unique_function<void ()>&&) /usr/include/c++/8/bits/invoke.h:95 (llvm-bolt+0xdcd366)
#14 decltype (__invoke((_S_declval<0ul>)())) std::thread::_Invoker<std::tuple<llvm::unique_function<void ()> > >::_M_invoke<0ul>(std::_Index_tuple<0ul>) /usr/include/c++/8/thread:244 (llvm-bolt+0xdcd366)
#15 std::thread::_Invoker<std::tuple<llvm::unique_function<void ()> > >::operator()() /usr/include/c++/8/thread:253 (llvm-bolt+0xdcd366)
#16 std::__future_base::_Task_setter<std::unique_ptr<std::__future_base::_Result<void>, std::__future_base::_Result_base::_Deleter>, std::thread::_Invoker<std::tuple<llvm::unique_function<void ()> > >, void>::operator()() const /usr/include/c++/8/future:1362 (llvm-bolt+0xdcd366)
#17 std::_Function_handler<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> (), std::__future_base::_Task_setter<std::unique_ptr<std::__future_base::_Result<void>, std::__future_base::_Result_base::_Deleter>, std::thread::_Invoker<std::tuple<llvm::unique_function<void ()> > >, void> >::_M_invoke(std::_Any_data const&) /usr/include/c++/8/bits/std_function.h:283 (llvm-bolt+0xdcd366)
#18 std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>::operator()() const /usr/include/c++/8/bits/std_function.h:687 (llvm-bolt+0xdcd5bc)
#19 std::__future_base::_State_baseV2::_M_do_set(std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>*, bool*) /usr/include/c++/8/future:561 (llvm-bolt+0xdcd5bc)
#20 void std::__invoke_impl<void, void (std::__future_base::_State_baseV2::*)(std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>*, bool*), std::__future_base::_State_baseV2*, std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>*, bool*>(std::__invoke_memfun_deref, void (std::__future_base::_State_baseV2::*&&)(std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>*, bool*), std::__future_base::_State_baseV2*&&, std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>*&&, bool*&&) /usr/include/c++/8/bits/invoke.h:73 (llvm-bolt+0xdcd554)
#21 std::__invoke_result<void (std::__future_base::_State_baseV2::*)(std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>*, bool*), std::__future_base::_State_baseV2*, std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>*, bool*>::type std::__invoke<void (std::__future_base::_State_baseV2::*)(std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>*, bool*), std::__future_base::_State_baseV2*, std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>*, bool*>(void (std::__future_base::_State_baseV2::*&&)(std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>*, bool*), std::__future_base::_State_baseV2*&&, std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>*&&, bool*&&) /usr/include/c++/8/bits/invoke.h:95 (llvm-bolt+0xdcd554)
#22 std::call_once<void (std::__future_base::_State_baseV2::*)(std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>*, bool*), std::__future_base::_State_baseV2*, std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>*, bool*>(std::once_flag&, void (std::__future_base::_State_baseV2::*&&)(std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>*, bool*), std::__future_base::_State_baseV2*&&, std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>*&&, bool*&&)::{lambda()#1}::operator()() const /usr/include/c++/8/mutex:672 (llvm-bolt+0xdcd554)
#23 std::call_once<void (std::__future_base::_State_baseV2::*)(std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>*, bool*), std::__future_base::_State_baseV2*, std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>*, bool*>(std::once_flag&, void (std::__future_base::_State_baseV2::*&&)(std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>*, bool*), std::__future_base::_State_baseV2*&&, std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>*&&, bool*&&)::{lambda()#2}::operator()() const /usr/include/c++/8/mutex:677 (llvm-bolt+0xdcd554)
#24 std::call_once<void (std::__future_base::_State_baseV2::*)(std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>*, bool*), std::__future_base::_State_baseV2*, std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>*, bool*>(std::once_flag&, void (std::__future_base::_State_baseV2::*&&)(std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>*, bool*), std::__future_base::_State_baseV2*&&, std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>*&&, bool*&&)::{lambda()#2}::_FUN() /usr/include/c++/8/mutex:677 (llvm-bolt+0xdcd554)
#25 pthread_once <null> (libtsan.so.0+0x2d8d9)
#26 __gthread_once /usr/include/x86_64-linux-gnu/c++/8/bits/gthr-default.h:699 (llvm-bolt+0xdcc9d2)
#27 void std::call_once<void (std::__future_base::_State_baseV2::*)(std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>*, bool*), std::__future_base::_State_baseV2*, std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>*, bool*>(std::once_flag&, void (std::__future_base::_State_baseV2::*&&)(std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>*, bool*), std::__future_base::_State_baseV2*&&, std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>*&&, bool*&&) /usr/include/c++/8/mutex:684 (llvm-bolt+0xdcc9d2)
#28 std::__future_base::_State_baseV2::_M_set_result(std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>, bool) /usr/include/c++/8/future:401 (llvm-bolt+0xdcc9d2)
#29 std::__future_base::_Deferred_state<std::thread::_Invoker<std::tuple<llvm::unique_function<void ()> > >, void>::_M_complete_async() /usr/include/c++/8/future:1615 (llvm-bolt+0xdcc9d2)
#30 std::__future_base::_State_baseV2::wait() /usr/include/c++/8/future:334 (llvm-bolt+0xdcdcc0)
#31 std::__basic_future<void>::wait() const /usr/include/c++/8/future:692 (llvm-bolt+0xdcdcc0)
#32 llvm::ThreadPoolInterface::asyncImpl<void>(llvm::unique_function<void ()>, llvm::ThreadPoolTaskGroup*)::{lambda()#1}::operator()() const /home/jinrui/llvm-pr/llvm/include/llvm/Support/ThreadPool.h:116 (llvm-bolt+0xdcdcc0)
#33 void llvm::detail::UniqueFunctionBase<void>::CallImpl<llvm::ThreadPoolInterface::asyncImpl<void>(llvm::unique_function<void ()>, llvm::ThreadPoolTaskGroup*)::{lambda()#1}>(void*) /home/jinrui/llvm-pr/llvm/include/llvm/ADT/FunctionExtras.h:211 (llvm-bolt+0xdcdcc0)
#34 llvm::unique_function<void ()>::operator()() /home/jinrui/llvm-pr/llvm/include/llvm/ADT/FunctionExtras.h:361 (llvm-bolt+0x30e89fa)
#35 llvm::StdThreadPool::processTasks(llvm::ThreadPoolTaskGroup*) /home/jinrui/llvm-pr/llvm/lib/Support/ThreadPool.cpp:119 (llvm-bolt+0x30e89fa)
#36 operator() /home/jinrui/llvm-pr/llvm/lib/Support/ThreadPool.cpp:62 (llvm-bolt+0x30ea239)
#37 operator()<llvm::StdThreadPool::grow(int)::<lambda()>&> /home/jinrui/llvm-pr/llvm/include/llvm/Support/thread.h:46 (llvm-bolt+0x30ea239)
#38 __invoke_impl<void, llvm::thread::GenericThreadProxy(void*) [with CalleeTuple = std::tuple<llvm::StdThreadPool::grow(int)::<lambda()> >]::<lambda(auto:4&&, auto:5&& ...)>, llvm::StdThreadPool::grow(int)::<lambda()>&> /usr/include/c++/8/bits/invoke.h:60 (llvm-bolt+0x30ea239)
#39 __invoke<llvm::thread::GenericThreadProxy(void*) [with CalleeTuple = std::tuple<llvm::StdThreadPool::grow(int)::<lambda()> >]::<lambda(auto:4&&, auto:5&& ...)>, llvm::StdThreadPool::grow(int)::<lambda()>&> /usr/include/c++/8/bits/invoke.h:95 (llvm-bolt+0x30ea239)
#40 __apply_impl<llvm::thread::GenericThreadProxy(void*) [with CalleeTuple = std::tuple<llvm::StdThreadPool::grow(int)::<lambda()> >]::<lambda(auto:4&&, auto:5&& ...)>, std::tuple<llvm::StdThreadPool::grow(int)::<lambda()> >&, 0> /usr/include/c++/8/tuple:1678 (llvm-bolt+0x30ea239)
#41 apply<llvm::thread::GenericThreadProxy(void*) [with CalleeTuple = std::tuple<llvm::StdThreadPool::grow(int)::<lambda()> >]::<lambda(auto:4&&, auto:5&& ...)>, std::tuple<llvm::StdThreadPool::grow(int)::<lambda()> >&> /usr/include/c++/8/tuple:1687 (llvm-bolt+0x30ea239)
#42 GenericThreadProxy<std::tuple<llvm::StdThreadPool::grow(int)::<lambda()> > > /home/jinrui/llvm-pr/llvm/include/llvm/Support/thread.h:44 (llvm-bolt+0x30ea239)
#43 ThreadProxy<std::tuple<llvm::StdThreadPool::grow(int)::<lambda()> > > /home/jinrui/llvm-pr/llvm/include/llvm/Support/thread.h:62 (llvm-bolt+0x30ea239)
#44 <null> <null> (libtsan.so.0+0x29b3d)
Thread T3 'llvm-worker-2' (tid=725731, running) created by main thread at:
#0 pthread_create <null> (libtsan.so.0+0x2be1b)
#1 llvm::llvm_execute_on_thread_impl(void* (*)(void*), void*, std::optional<unsigned int>) /home/jinrui/llvm-pr/llvm/lib/Support/Unix/Threading.inc:95 (llvm-bolt+0xc4a2e3)
#2 thread<llvm::StdThreadPool::grow(int)::<lambda()>&> /home/jinrui/llvm-pr/llvm/include/llvm/Support/thread.h:138 (llvm-bolt+0x30e390b)
#3 emplace_back<llvm::StdThreadPool::grow(int)::<lambda()> > /home/jinrui/llvm-pr/llvm/include/llvm/Support/thread.h:85 (llvm-bolt+0x30e41fe)
#4 llvm::StdThreadPool::grow(int) /home/jinrui/llvm-pr/llvm/lib/Support/ThreadPool.cpp:63 (llvm-bolt+0x30e41fe)
#5 llvm::StdThreadPool::asyncEnqueue(llvm::unique_function<void ()>, llvm::ThreadPoolTaskGroup*) /home/jinrui/llvm-pr/llvm/include/llvm/Support/ThreadPool.h:176 (llvm-bolt+0x30e4d21)
#6 async<llvm::bolt::ParallelUtilities::runOnEachFunctionWithUniqueAllocId(llvm::bolt::BinaryContext&, llvm::bolt::ParallelUtilities::SchedulingPolicy, llvm::bolt::ParallelUtilities::WorkFuncWithAllocTy, llvm::bolt::ParallelUtilities::PredicateTy, std::__cxx11::string, bool, unsigned int)::<lambda(std::map<long unsigned int, llvm::bolt::BinaryFunction>::iterator, std::map<long unsigned int, llvm::bolt::BinaryFunction>::iterator, llvm::bolt::MCPlusBuilder::AllocatorIdTy)>&, std::_Rb_tree_iterator<std::pair<long unsigned int const, llvm::bolt::BinaryFunction> >&, std::_Rb_tree_iterator<std::pair<long unsigned int const, llvm::bolt::BinaryFunction> >, unsigned int&> /home/jinrui/llvm-pr/llvm/include/llvm/Support/ThreadPool.h:116 (llvm-bolt+0x1a2d71e)
#7 llvm::bolt::ParallelUtilities::runOnEachFunctionWithUniqueAllocId(llvm::bolt::BinaryContext&, llvm::bolt::ParallelUtilities::SchedulingPolicy, std::function<void (llvm::bolt::BinaryFunction&, unsigned short)>, std::function<bool (llvm::bolt::BinaryFunction const&)>, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, bool, unsigned int) /home/jinrui/llvm-pr/bolt/lib/Core/ParallelUtilities.cpp:230 (llvm-bolt+0x1a2d71e)
#8 llvm::bolt::RewriteInstance::buildFunctionsCFG() /home/jinrui/llvm-pr/bolt/lib/Rewrite/RewriteInstance.cpp:3833 (llvm-bolt+0xd341f2)
#9 llvm::bolt::RewriteInstance::run() /home/jinrui/llvm-pr/bolt/lib/Rewrite/RewriteInstance.cpp:803 (llvm-bolt+0xdbb513)
#10 main /home/jinrui/llvm-pr/bolt/tools/driver/llvm-bolt.cpp:267 (llvm-bolt+0xc5cd0)
Thread T10 'llvm-worker-9' (tid=725738, running) created by main thread at:
#0 pthread_create <null> (libtsan.so.0+0x2be1b)
#1 llvm::llvm_execute_on_thread_impl(void* (*)(void*), void*, std::optional<unsigned int>) /home/jinrui/llvm-pr/llvm/lib/Support/Unix/Threading.inc:95 (llvm-bolt+0xc4a2e3)
#2 thread<llvm::StdThreadPool::grow(int)::<lambda()>&> /home/jinrui/llvm-pr/llvm/include/llvm/Support/thread.h:138 (llvm-bolt+0x30e390b)
#3 thread<llvm::StdThreadPool::grow(int)::<lambda()> > /home/jinrui/llvm-pr/llvm/include/llvm/Support/thread.h:85 (llvm-bolt+0x30e4123)
#4 construct<llvm::thread, llvm::StdThreadPool::grow(int)::<lambda()> > /usr/include/c++/8/ext/new_allocator.h:136 (llvm-bolt+0x30e4123)
#5 construct<llvm::thread, llvm::StdThreadPool::grow(int)::<lambda()> > /usr/include/c++/8/bits/alloc_traits.h:475 (llvm-bolt+0x30e4123)
#6 emplace_back<llvm::StdThreadPool::grow(int)::<lambda()> > /usr/include/c++/8/bits/vector.tcc:103 (llvm-bolt+0x30e4123)
#7 llvm::StdThreadPool::grow(int) /home/jinrui/llvm-pr/llvm/lib/Support/ThreadPool.cpp:63 (llvm-bolt+0x30e4123)
#8 llvm::StdThreadPool::asyncEnqueue(llvm::unique_function<void ()>, llvm::ThreadPoolTaskGroup*) /home/jinrui/llvm-pr/llvm/include/llvm/Support/ThreadPool.h:176 (llvm-bolt+0x30e4d21)
#9 async<llvm::bolt::ParallelUtilities::runOnEachFunctionWithUniqueAllocId(llvm::bolt::BinaryContext&, llvm::bolt::ParallelUtilities::SchedulingPolicy, llvm::bolt::ParallelUtilities::WorkFuncWithAllocTy, llvm::bolt::ParallelUtilities::PredicateTy, std::__cxx11::string, bool, unsigned int)::<lambda(std::map<long unsigned int, llvm::bolt::BinaryFunction>::iterator, std::map<long unsigned int, llvm::bolt::BinaryFunction>::iterator, llvm::bolt::MCPlusBuilder::AllocatorIdTy)>&, std::_Rb_tree_iterator<std::pair<long unsigned int const, llvm::bolt::BinaryFunction> >&, std::_Rb_tree_iterator<std::pair<long unsigned int const, llvm::bolt::BinaryFunction> >, unsigned int&> /home/jinrui/llvm-pr/llvm/include/llvm/Support/ThreadPool.h:116 (llvm-bolt+0x1a2d71e)
#10 llvm::bolt::ParallelUtilities::runOnEachFunctionWithUniqueAllocId(llvm::bolt::BinaryContext&, llvm::bolt::ParallelUtilities::SchedulingPolicy, std::function<void (llvm::bolt::BinaryFunction&, unsigned short)>, std::function<bool (llvm::bolt::BinaryFunction const&)>, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, bool, unsigned int) /home/jinrui/llvm-pr/bolt/lib/Core/ParallelUtilities.cpp:230 (llvm-bolt+0x1a2d71e)
#11 llvm::bolt::RewriteInstance::buildFunctionsCFG() /home/jinrui/llvm-pr/bolt/lib/Rewrite/RewriteInstance.cpp:3833 (llvm-bolt+0xd341f2)
#12 llvm::bolt::RewriteInstance::run() /home/jinrui/llvm-pr/bolt/lib/Rewrite/RewriteInstance.cpp:803 (llvm-bolt+0xdbb513)
#13 main /home/jinrui/llvm-pr/bolt/tools/driver/llvm-bolt.cpp:267 (llvm-bolt+0xc5cd0)
SUMMARY: ThreadSanitizer: data race /home/jinrui/llvm-pr/bolt/lib/Core/DIEBuilder.cpp:277 in llvm::bolt::DIEBuilder::buildTypeUnits(llvm::bolt::DebugStrOffsetsWriter*, bool)
```
https://github.com/llvm/llvm-project/pull/197359
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