Stacktrace:

  at <unknown> <0xffffffff>
  at System.Windows.Forms.TextBoxBase.Draw (System.Drawing.Graphics,System.Drawing.Rectangle) <IL 0x00015, 0x000b3>
  at System.Windows.Forms.TextBoxBase.OnPaintInternal (System.Windows.Forms.PaintEventArgs) <IL 0x0000d, 0x00063>
  at System.Windows.Forms.Control.WmPaint (System.Windows.Forms.Message&) <IL 0x0007a, 0x0017f>
  at System.Windows.Forms.Control.WndProc (System.Windows.Forms.Message&) <IL 0x00161, 0x00223>
  at System.Windows.Forms.TextBoxBase.WndProc (System.Windows.Forms.Message&) <IL 0x00211, 0x00327>
  at System.Windows.Forms.TextBox.WndProc (System.Windows.Forms.Message&) <IL 0x00177, 0x001db>
  at System.Windows.Forms.Control/ControlWindowTarget.OnMessage (System.Windows.Forms.Message&) <IL 0x00007, 0x0002b>
  at System.Windows.Forms.Control/ControlNativeWindow.WndProc (System.Windows.Forms.Message&) <IL 0x0000c, 0x0003b>
  at System.Windows.Forms.NativeWindow.WndProc (intptr,System.Windows.Forms.Msg,intptr,intptr) <IL 0x00091, 0x002e3>
  at System.Windows.Forms.XplatUIX11.DispatchMessage (System.Windows.Forms.MSG&) <IL 0x00018, 0x00023>
  at System.Windows.Forms.XplatUI.DispatchMessage (System.Windows.Forms.MSG&) <IL 0x00006, 0x00033>
  at System.Windows.Forms.Application.RunLoop (bool,System.Windows.Forms.ApplicationContext) <IL 0x0036e, 0x00bc3>
  at System.Windows.Forms.Application.Run (System.Windows.Forms.ApplicationContext) <IL 0x00016, 0x00067>
  at System.Windows.Forms.Application.Run (System.Windows.Forms.Form) <IL 0x00006, 0x00033>
  at HelloWorldFormTB.Form1.Main () <IL 0x00005, 0x00037>
  at (wrapper runtime-invoke) object.runtime_invoke_void (object,intptr,intptr,intptr) <IL 0x0004c, 0xffffffff>

Native stacktrace:


Debug info from gdb:

[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/arm-linux-gnueabihf/libthread_db.so.1".
[New Thread 0xb5b7b430 (LWP 5766)]
0xb6ec9a3c in waitpid () from /lib/arm-linux-gnueabihf/libpthread.so.0
  Id   Target Id         Frame
  2    Thread 0xb5b7b430 (LWP 5766) "mono" 0xb6ec7700 in sem_wait@@GLIBC_2.4 () from /lib/arm-linux-gnueabihf/libpthread.so.0
* 1    Thread 0xb6f9c000 (LWP 5765) "mono" 0xb6ec9a3c in waitpid () from /lib/arm-linux-gnueabihf/libpthread.so.0

Thread 2 (Thread 0xb5b7b430 (LWP 5766)):
#0  0xb6ec7700 in sem_wait@@GLIBC_2.4 () from /lib/arm-linux-gnueabihf/libpthread.so.0
#1  0x001fff10 in mono_sem_wait (sem=0x2f523c, alertable=1) at mono-semaphore.c:119
#2  0x0017db28 in finalizer_thread (unused=<optimized out>) at gc.c:1073
#3  0x001625b4 in start_wrapper_internal (data=0x19c9e10) at threads.c:643
#4  start_wrapper (data=0x19c9e10) at threads.c:688
#5  0x001f5c30 in thread_start_routine (args=0x1977f00) at wthreads.c:294
#6  0x00204268 in inner_start_thread (arg=0x1977ef4) at mono-threads-posix.c:49
#7  0xb6ec0bfc in start_thread () from /lib/arm-linux-gnueabihf/libpthread.so.0
#8  0xb6e2d868 in ?? () from /lib/arm-linux-gnueabihf/libc.so.6
#9  0xb6e2d868 in ?? () from /lib/arm-linux-gnueabihf/libc.so.6
Backtrace stopped: previous frame identical to this frame (corrupt stack?)

Thread 1 (Thread 0xb6f9c000 (LWP 5765)):
#0  0xb6ec9a3c in waitpid () from /lib/arm-linux-gnueabihf/libpthread.so.0
#1  0x000b2148 in mono_handle_native_sigsegv (signal=<optimized out>, ctx=<optimized out>) at mini-exceptions.c:2299
#2  <signal handler called>
#3  0xb6d8ebfc in raise () from /lib/arm-linux-gnueabihf/libc.so.6
#4  0xb6d9297c in abort () from /lib/arm-linux-gnueabihf/libc.so.6
#5  0x000136fc in ?? ()
Cannot access memory at address 0x0
#6  0x000136fc in ?? ()
Cannot access memory at address 0x0
Backtrace stopped: previous frame identical to this frame (corrupt stack?)

=================================================================
Got a SIGABRT while executing native code. This usually indicates
a fatal error in the mono runtime or one of the native libraries
used by your application.
=================================================================

Aborted
pi@raspberrypi ~ $