https://llvm.org/bugs/show_bug.cgi?id=30526
Bug ID: 30526
Summary: deadlock when calling SBThread::GetSelectedFrame
Product: lldb
Version: 3.9
Hardware: PC
OS: Windows NT
Status: NEW
Severity: normal
Priority: P
Component: All Bugs
Assignee: lldb-dev@lists.llvm.org
Reporter: cc.t...@gmail.com
CC: llvm-b...@lists.llvm.org
Classification: Unclassified
I have thread working with lldb events.
void LLDBRunner::eventsThread()
{
while (1)
{
lldb::SBEvent ev;
m_debugData->listener.WaitForEvent(UINT32_MAX, ev);
lldb::SBThread thread = m_debugData->currentProcess.GetSelectedThread();
lldb::SBFrame frame = thread.GetSelectedFrame();
}
}
Sometimes(but not always) this thread hangs up when calling
thread.GetSelectedFrame();
Call stack:
liblldb.dll!llvm::sys::MutexImpl::acquire() Line 41 C++
liblldb.dll!llvm::sys::SmartMutex<0>::lock() Line 101 C++
liblldb.dll!llvm::sys::SmartScopedLock<0>::SmartScopedLock<0>(llvm::sys::SmartMutex<0>
& m) Line 147 C++
liblldb.dll!lldb_private::ProcessWindowsLive::DoReadMemory(unsigned
__int64 vm_addr, void * buf, unsigned int size, lldb_private::Error & error)
Line 704 C++
liblldb.dll!lldb_private::Process::ReadMemoryFromInferior(unsigned __int64
addr, void * buf, unsigned int size, lldb_private::Error & error) Line 2506
C++
liblldb.dll!lldb_private::MemoryCache::Read(unsigned __int64 addr, void *
dst, unsigned int dst_len, lldb_private::Error & error) Line 268 C++
liblldb.dll!lldb_private::Process::ReadMemory(unsigned __int64 addr, void
* buf, unsigned int size, lldb_private::Error & error) Line 2355 C++
liblldb.dll!lldb_private::RegisterContext::ReadRegisterValueFromMemory(const
lldb_private::RegisterInfo * reg_info, unsigned __int64 src_addr, unsigned int
src_len, lldb_private::RegisterValue & reg_value) Line 409 C++
liblldb.dll!lldb_private::RegisterContextLLDB::ReadRegisterValueFromRegisterLocation(lldb_private::UnwindLLDB::RegisterLocation
regloc, const lldb_private::RegisterInfo * reg_info,
lldb_private::RegisterValue & value) Line 1083 C++
liblldb.dll!lldb_private::RegisterContextLLDB::ReadGPRValue(lldb::RegisterKind
register_kind, unsigned int regnum, unsigned __int64 & value) Line 1919 C++
liblldb.dll!lldb_private::RegisterContextLLDB::ReadPC(unsigned __int64 &
pc) Line 2066 C++
liblldb.dll!lldb_private::UnwindLLDB::GetOneMoreFrame(lldb_private::ABI *
abi) Line 265 C++
liblldb.dll!lldb_private::UnwindLLDB::AddOneMoreFrame(lldb_private::ABI *
abi) Line 357 C++
liblldb.dll!lldb_private::UnwindLLDB::UpdateUnwindPlanForFirstFrameIfInvalid(lldb_private::ABI
* abi) Line 332 C++
liblldb.dll!lldb_private::UnwindLLDB::AddFirstFrame() Line 118 C++
liblldb.dll!lldb_private::UnwindLLDB::DoGetFrameInfoAtIndex(unsigned int
idx, unsigned __int64 & cfa, unsigned __int64 & pc) Line 422 C++
liblldb.dll!lldb_private::Unwind::GetFrameInfoAtIndex(unsigned int
frame_idx, unsigned __int64 & cfa, unsigned __int64 & pc) Line 72 C++
liblldb.dll!lldb_private::StackFrameList::GetFramesUpTo(unsigned int
end_idx) Line 299 C++
liblldb.dll!lldb_private::StackFrameList::GetFrameAtIndex(unsigned int
idx) Line 541 C++
liblldb.dll!lldb_private::Thread::GetSelectedFrame() Line 364 C++
liblldb.dll!lldb::SBThread::GetSelectedFrame() Line 1471 C++
ssl-rt.dll!Debugger::LLDBRunner::checkCurrentFunctionIsOkey() Line 143
C++
ssl-rt.dll!Debugger::LLDBRunner::eventsThread() Line 263 C++
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