Description
Description
When debugging an ASP.NET project that raises exceptions, the debugger will crash while attempting to unwind the call stack.
The debugger process crashes with the following stack. The issue is that Rsp is 0.
libmscordaccore.so!MemoryRead64(PULONG64 addr) Line 30
libmscordaccore.so!OOPStackUnwinderAMD64::UnwindPrologue(ULONG64 ImageBase, ULONG64 ImageBase@entry, ULONG64 ControlPc, ULONG64 ControlPc@entry, ULONG64 FrameBase, _PIMAGE_RUNTIME_FUNCTION_ENTRY FunctionEntry, _PIMAGE_RUNTIME_FUNCTION_ENTRY FunctionEntry@entry, PCONTEXT ContextRecord, PCONTEXT ContextRecord@entry, PKNONVOLATILE_CONTEXT_POINTERS ContextPointers, PKNONVOLATILE_CONTEXT_POINTERS ContextPointers@entry, _PIMAGE_RUNTIME_FUNCTION_ENTRY * FinalFunctionEntry) Line 754
libmscordaccore.so!OOPStackUnwinderAMD64::VirtualUnwind(DWORD HandlerType, DWORD HandlerType@entry, ULONG64 ImageBase, ULONG64 ControlPc, ULONG64 ControlPc@entry, _PIMAGE_RUNTIME_FUNCTION_ENTRY FunctionEntry, _PIMAGE_RUNTIME_FUNCTION_ENTRY FunctionEntry@entry, PCONTEXT ContextRecord, PCONTEXT ContextRecord@entry, PVOID * HandlerData, PVOID * HandlerData@entry, PULONG64 EstablisherFrame, PKNONVOLATILE_CONTEXT_POINTERS ContextPointers, PEXCEPTION_ROUTINE * HandlerRoutine) Line 1617
libmscordaccore.so!OOPStackUnwinderAMD64::Unwind(CONTEXT * pContext) Line 255
libmscordaccore.so!DacUnwindStackFrame(CONTEXT * pContext, KNONVOLATILE_CONTEXT_POINTERS * pContextPointers) Line 207
libmscordaccore.so!Thread::VirtualUnwindCallFrame(CONTEXT * pContext, KNONVOLATILE_CONTEXT_POINTERS * pContextPointers, EECodeInfo * pCodeInfo) Line 637
libmscordaccore.so!EECodeManager::EnsureCallerContextIsValid(PREGDISPLAY pRD, EECodeInfo * pCodeInfo, unsigned int flags) Line 1033
libmscordaccore.so!StackFrameIterator::ResetRegDisp(StackFrameIterator * this, PREGDISPLAY pRegDisp, bool fIsFirst) Line 1301
libmscordaccore.so!DacDbiInterfaceImpl::SetStackWalkCurrentContext(DacDbiInterfaceImpl * this, IDacDbiInterface::StackWalkHandle pSFIHandle, CorDebugSetContextFlag flag, DT_CONTEXT * pContext) Line 193
libmscordbi.so!CordbStackWalk::SetContextWorker(CordbStackWalk * this, CordbStackWalk * this@entry, CorDebugSetContextFlag flag, CorDebugSetContextFlag flag@entry, ULONG32 contextSize, ULONG32 contextSize@entry, BYTE * context, BYTE * context@entry) Line 401
libmscordbi.so!CordbStackWalk::SetContext(CordbStackWalk * this, CorDebugSetContextFlag flag, ULONG32 contextSize, BYTE * context) Line 355
libmscordbi.so!ShimStackWalk::CheckInternalFrame(ICorDebugFrame * pNextStackFrame, ShimStackWalk::StackWalkInfo * pStackWalkInfo, ShimStackWalk::StackWalkInfo * pStackWalkInfo@entry, ICorDebugThread3 * pThread3, ICorDebugStackWalk * pSW) Line 1220
libmscordbi.so!ShimStackWalk::Populate(ShimStackWalk * this, ShimStackWalk * this@entry) Line 265
libmscordbi.so!ShimStackWalk::ShimStackWalk(ShimStackWalk * this, ShimProcess * pProcess, ICorDebugThread * pThread) Line 33
libmscordbi.so!ShimProcess::LookupOrCreateShimStackWalk(ShimProcess * this, ICorDebugThread * pThread) Line 1498
libmscordbi.so!CordbThread::FindFrame(CordbThread * this, ICorDebugFrame ** ppFrame, FramePointer fp) Line 1402
libmscordbi.so!UpdateFrame(ICorDebugThread * pThread, ICorDebugThread * pThread@entry, ICorDebugFrame * pOldFrame) Line 106
libmscordbi.so!ShimProxyCallback::Exception(ICorDebugAppDomain*, ICorDebugThread*, ICorDebugFrame*, unsigned int, CorDebugExceptionCallbackType, unsigned int)::ExceptionEvent::Dispatch(ManagedEvent::DispatchArgs)(ExceptionEvent * this, ManagedEvent::DispatchArgs args) Line 1184
libmscordbi.so!CordbProcess::DispatchRCEvent(CordbProcess * this, CordbProcess * this@entry) Line 4763
libmscordbi.so!CordbRCEventThread::FlushQueuedEvents(CordbRCEventThread * this, CordbRCEventThread * this@entry, CordbProcess * process, CordbProcess * process@entry) Line 10349
libmscordbi.so!CordbRCEventThread::ThreadProc(CordbRCEventThread * this) Line 10607
libmscordbi.so!CordbRCEventThread::ThreadProc(LPVOID parameter) Line 10673
libmscordaccore.so!CorUnix::CPalThread::ThreadEntry(void * pvParam) Line 1744
libc.so.6!start_thread(void * arg) Line 447
libc.so.6!clone3() Line 78
Reproduction Steps
- Extract the following project: WebApplication6.zip
- Run it on Linux -- Docker, WSL, or natively should all work
- After the web server is started, hit the '/weatherforecast/` endpoint
Expected behavior
Debugger process should not crash
Actual behavior
Debugger process crashes
Regression?
Regression from .NET 8
Known Workarounds
None known
Configuration
I have seen this in 9.0.4 Linux x64. I didn't try this in any other configuration.
Other information
No response