(gdb) info threads Id Target Id Frame 9 Thread 14024.0x264c 0x00007ffbd84553e1 in ntdll!DbgBreakPoint () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll 8 Thread 14024.0x3e34 0x00007ffbd845538a in ntdll!ZwWaitForWorkViaWorkerFactory () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll 7 Thread 14024.0x1064 0x00007ffbd845386a in ntdll!ZwWaitForSingleObject () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll 6 Thread 14024.0x1f60 0x00007ffbd845386a in ntdll!ZwWaitForSingleObject () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll 5 Thread 14024.0x2088 0x00007ffbd845386a in ntdll!ZwWaitForSingleObject () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll 4 Thread 14024.0x1e64 0x00007ffbd8453dda in ntdll!ZwWaitForMultipleObjects () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll 3 Thread 14024.0xa14 0x00007ffbd845386a in ntdll!ZwWaitForSingleObject () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll 2 Thread 14024.0x3628 0x00007ffbd845388a in ntdll!ZwReadFile () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll * 1 Thread 14024.0x708 0x00007ffbd845386a in ntdll!ZwWaitForSingleObject () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll (gdb) thread 1 [Switching to thread 1 (Thread 14024.0x708)] #0 0x00007ffbd845386a in ntdll!ZwWaitForSingleObject () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll (gdb) bt #0 0x00007ffbd845386a in ntdll!ZwWaitForSingleObject () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll #1 0x00007ffbd51e415f in WaitForSingleObjectEx () from /cygdrive/c/Windows/system32/KERNELBASE.dll #2 0x0000000180129b0b in muto::acquire(unsigned int) () from /usr/bin/cygwin1.dll #3 0x0000000180042c3d in _cfree () from /usr/bin/cygwin1.dll #4 0x00000001800dd36d in path_conv::~path_conv() () from /usr/bin/cygwin1.dll #5 0x00000001801deabb in fhandler_pipe::~fhandler_pipe() () from /usr/bin/cygwin1.dll #6 0x000000018012eaa5 in close () from /usr/bin/cygwin1.dll #7 0x0000000180117a4b in _sigfe () from /usr/bin/cygwin1.dll #8 0x0000000180117a95 in _sigbe () from /usr/bin/cygwin1.dll Backtrace stopped: previous frame identical to this frame (corrupt stack?) (gdb) thread 2 [Switching to thread 2 (Thread 14024.0x3628)] #0 0x00007ffbd845388a in ntdll!ZwReadFile () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll (gdb) bt #0 0x00007ffbd845388a in ntdll!ZwReadFile () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll #1 0x00007ffbd51de784 in ReadFile () from /cygdrive/c/Windows/system32/KERNELBASE.dll #2 0x000000018011e703 in wait_sig(void*) () from /usr/bin/cygwin1.dll #3 0x0000000180044753 in cygthread::callfunc(bool) () from /usr/bin/cygwin1.dll #4 0x0000000180044cea in cygthread::stub(void*) () from /usr/bin/cygwin1.dll #5 0x0000000180045733 in _cygtls::call2(unsigned int (*)(void*, void*), void*, void*) () from /usr/bin/cygwin1.dll #6 0x00000001800457e4 in _cygtls::call(unsigned int (*)(void*, void*), void*) () from /usr/bin/cygwin1.dll #7 0x00007ffbd5e52d92 in KERNEL32!BaseThreadInitThunk () from /cygdrive/c/Windows/system32/KERNEL32.DLL #8 0x00007ffbd83c9f64 in ntdll!RtlUserThreadStart () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll #9 0x0000000000000000 in ?? () Backtrace stopped: previous frame inner to this frame (corrupt stack?) (gdb) thread 3 [Switching to thread 3 (Thread 14024.0xa14)] #0 0x00007ffbd845386a in ntdll!ZwWaitForSingleObject () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll (gdb) bt #0 0x00007ffbd845386a in ntdll!ZwWaitForSingleObject () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll #1 0x00007ffbd51e415f in WaitForSingleObjectEx () from /cygdrive/c/Windows/system32/KERNELBASE.dll #2 0x0000000180044d21 in cygthread::stub(void*) () from /usr/bin/cygwin1.dll #3 0x0000000180045733 in _cygtls::call2(unsigned int (*)(void*, void*), void*, void*) () from /usr/bin/cygwin1.dll #4 0x00000001800457e4 in _cygtls::call(unsigned int (*)(void*, void*), void*) () from /usr/bin/cygwin1.dll #5 0x00007ffbd5e52d92 in KERNEL32!BaseThreadInitThunk () from /cygdrive/c/Windows/system32/KERNEL32.DLL #6 0x00007ffbd83c9f64 in ntdll!RtlUserThreadStart () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll #7 0x0000000000000000 in ?? () Backtrace stopped: previous frame inner to this frame (corrupt stack?) (gdb) thread 4 [Switching to thread 4 (Thread 14024.0x1e64)] #0 0x00007ffbd8453dda in ntdll!ZwWaitForMultipleObjects () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll (gdb) bt #0 0x00007ffbd8453dda in ntdll!ZwWaitForMultipleObjects () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll #1 0x00007ffbd520918f in WaitForMultipleObjectsEx () from /cygdrive/c/Windows/system32/KERNELBASE.dll #2 0x00007ffbd520908e in WaitForMultipleObjects () from /cygdrive/c/Windows/system32/KERNELBASE.dll #3 0x00000001800459fc in cygwait(void*, _LARGE_INTEGER*, unsigned int) () from /usr/bin/cygwin1.dll #4 0x0000000180143f56 in semaphore::_wait() () from /usr/bin/cygwin1.dll #5 0x0000000180117a4b in _sigfe () from /usr/bin/cygwin1.dll #6 0x00000003fe4942c8 in libpython2.7!PyThread_acquire_lock () from /usr/bin/libpython2.7.dll #7 0x00000003fe499f32 in libpython2.7!PyObject_GC_Del () from /usr/bin/libpython2.7.dll #8 0x00000003fe4564df in libpython2.7!PyEval_EvalFrameEx () from /usr/bin/libpython2.7.dll #9 0x00000003fe45778a in libpython2.7!PyEval_EvalCodeEx () from /usr/bin/libpython2.7.dll #10 0x00000003fe455535 in libpython2.7!PyEval_EvalFrameEx () from /usr/bin/libpython2.7.dll #11 0x00000003fe45778a in libpython2.7!PyEval_EvalCodeEx () from /usr/bin/libpython2.7.dll #12 0x00000003fe455535 in libpython2.7!PyEval_EvalFrameEx () from /usr/bin/libpython2.7.dll #13 0x00000003fe45778a in libpython2.7!PyEval_EvalCodeEx () from /usr/bin/libpython2.7.dll #14 0x00000003fe3c7925 in libpython2.7!PyFrame_Fini () from /usr/bin/libpython2.7.dll #15 0x00000003fe393151 in libpython2.7!PyObject_Call () from /usr/bin/libpython2.7.dll #16 0x00000003fe4510a7 in libpython2.7!PyEval_EvalFrameEx () from /usr/bin/libpython2.7.dll #17 0x00000003fe455653 in libpython2.7!PyEval_EvalFrameEx () from /usr/bin/libpython2.7.dll #18 0x00000003fe455653 in libpython2.7!PyEval_EvalFrameEx () from /usr/bin/libpython2.7.dll #19 0x00000003fe45778a in libpython2.7!PyEval_EvalCodeEx () from /usr/bin/libpython2.7.dll #20 0x00000003fe3c7847 in libpython2.7!PyFrame_Fini () from /usr/bin/libpython2.7.dll #21 0x00000003fe393151 in libpython2.7!PyObject_Call () from /usr/bin/libpython2.7.dll #22 0x00000003fe3a620c in libpython2.7!PyInstance_New () from /usr/bin/libpython2.7.dll #23 0x00000003fe393151 in libpython2.7!PyObject_Call () from /usr/bin/libpython2.7.dll #24 0x00000003fe44e117 in libpython2.7!PyEval_CallObjectWithKeywords () from /usr/bin/libpython2.7.dll #25 0x00000003fe49a2f2 in libpython2.7!PyObject_GC_Del () from /usr/bin/libpython2.7.dll #26 0x000000018013f439 in pthread::thread_init_wrapper(void*) () from /usr/bin/cygwin1.dll #27 0x00000001800bd841 in pthread_wrapper () from /usr/bin/cygwin1.dll #28 0x0000000000000000 in ?? () Backtrace stopped: previous frame inner to this frame (corrupt stack?) (gdb) thread 5 [Switching to thread 5 (Thread 14024.0x2088)] #0 0x00007ffbd845386a in ntdll!ZwWaitForSingleObject () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll (gdb) bt #0 0x00007ffbd845386a in ntdll!ZwWaitForSingleObject () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll #1 0x00007ffbd51e415f in WaitForSingleObjectEx () from /cygdrive/c/Windows/system32/KERNELBASE.dll #2 0x000000018011f027 in sig_send(_pinfo*, siginfo_t&, _cygtls*) () from /usr/bin/cygwin1.dll #3 0x000000018005c7c1 in exception::handle(_EXCEPTION_RECORD*, void*, _CONTEXT*, _DISPATCHER_CONTEXT*) () from /usr/bin/cygwin1.dll #4 0x00007ffbd845666d in ntdll!.chkstk () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll #5 0x00007ffbd83d3c00 in ntdll!RtlWalkFrameChain () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll #6 0x00007ffbd845577a in ntdll!KiUserExceptionDispatcher () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll #7 0x0000000180042c51 in _cfree () from /usr/bin/cygwin1.dll #8 0x00000001801deab3 in fhandler_pipe::~fhandler_pipe() () from /usr/bin/cygwin1.dll #9 0x00000001800621f5 in flush_async_io(void*) () from /usr/bin/cygwin1.dll #10 0x0000000180044753 in cygthread::callfunc(bool) () from /usr/bin/cygwin1.dll #11 0x0000000180044cea in cygthread::stub(void*) () from /usr/bin/cygwin1.dll #12 0x0000000180045733 in _cygtls::call2(unsigned int (*)(void*, void*), void*, void*) () from /usr/bin/cygwin1.dll #13 0x00000001800457e4 in _cygtls::call(unsigned int (*)(void*, void*), void*) () from /usr/bin/cygwin1.dll #14 0x00007ffbd5e52d92 in KERNEL32!BaseThreadInitThunk () from /cygdrive/c/Windows/system32/KERNEL32.DLL #15 0x00007ffbd83c9f64 in ntdll!RtlUserThreadStart () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll #16 0x0000000000000000 in ?? () Backtrace stopped: previous frame inner to this frame (corrupt stack?) (gdb) thread 6 [Switching to thread 6 (Thread 14024.0x1f60)] #0 0x00007ffbd845386a in ntdll!ZwWaitForSingleObject () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll (gdb) bt #0 0x00007ffbd845386a in ntdll!ZwWaitForSingleObject () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll #1 0x00007ffbd51e415f in WaitForSingleObjectEx () from /cygdrive/c/Windows/system32/KERNELBASE.dll #2 0x0000000180044d21 in cygthread::stub(void*) () from /usr/bin/cygwin1.dll #3 0x0000000180045733 in _cygtls::call2(unsigned int (*)(void*, void*), void*, void*) () from /usr/bin/cygwin1.dll #4 0x00000001800457e4 in _cygtls::call(unsigned int (*)(void*, void*), void*) () from /usr/bin/cygwin1.dll #5 0x00007ffbd5e52d92 in KERNEL32!BaseThreadInitThunk () from /cygdrive/c/Windows/system32/KERNEL32.DLL #6 0x00007ffbd83c9f64 in ntdll!RtlUserThreadStart () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll #7 0x0000000000000000 in ?? () Backtrace stopped: previous frame inner to this frame (corrupt stack?) (gdb) thread 7 [Switching to thread 7 (Thread 14024.0x1064)] #0 0x00007ffbd845386a in ntdll!ZwWaitForSingleObject () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll (gdb) bt #0 0x00007ffbd845386a in ntdll!ZwWaitForSingleObject () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll #1 0x00007ffbd51e415f in WaitForSingleObjectEx () from /cygdrive/c/Windows/system32/KERNELBASE.dll #2 0x0000000180044d21 in cygthread::stub(void*) () from /usr/bin/cygwin1.dll #3 0x0000000180045733 in _cygtls::call2(unsigned int (*)(void*, void*), void*, void*) () from /usr/bin/cygwin1.dll #4 0x00000001800457e4 in _cygtls::call(unsigned int (*)(void*, void*), void*) () from /usr/bin/cygwin1.dll #5 0x00007ffbd5e52d92 in KERNEL32!BaseThreadInitThunk () from /cygdrive/c/Windows/system32/KERNEL32.DLL #6 0x00007ffbd83c9f64 in ntdll!RtlUserThreadStart () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll #7 0x0000000000000000 in ?? () Backtrace stopped: previous frame inner to this frame (corrupt stack?) (gdb) thread 8 [Switching to thread 8 (Thread 14024.0x3e34)] #0 0x00007ffbd845538a in ntdll!ZwWaitForWorkViaWorkerFactory () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll (gdb) bit Undefined command: "bit". Try "help". (gdb) bt #0 0x00007ffbd845538a in ntdll!ZwWaitForWorkViaWorkerFactory () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll #1 0x00007ffbd83f93a5 in ntdll!EtwEventRegister () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll #2 0x0000000180045733 in _cygtls::call2(unsigned int (*)(void*, void*), void*, void*) () from /usr/bin/cygwin1.dll #3 0x00000001800457e4 in _cygtls::call(unsigned int (*)(void*, void*), void*) () from /usr/bin/cygwin1.dll #4 0x00007ffbd5e52d92 in KERNEL32!BaseThreadInitThunk () from /cygdrive/c/Windows/system32/KERNEL32.DLL #5 0x00007ffbd83c9f64 in ntdll!RtlUserThreadStart () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll #6 0x0000000000000000 in ?? () Backtrace stopped: previous frame inner to this frame (corrupt stack?) (gdb) thread 9 [Switching to thread 9 (Thread 14024.0x264c)] #0 0x00007ffbd84553e1 in ntdll!DbgBreakPoint () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll (gdb) bt #0 0x00007ffbd84553e1 in ntdll!DbgBreakPoint () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll #1 0x00007ffbd847c9a1 in ntdll!DbgUiRemoteBreakin () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll #2 0x00007ffbd5e52d92 in KERNEL32!BaseThreadInitThunk () from /cygdrive/c/Windows/system32/KERNEL32.DLL #3 0x00007ffbd83c9f64 in ntdll!RtlUserThreadStart () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll #4 0x0000000000000000 in ?? () Backtrace stopped: previous frame inner to this frame (corrupt stack?)