title: My program crashes when GC perform garbage collection
body: <p>My program has a trouble: When GC perform garbage collection,my program always crashes at a function,which is called by main flow several times before </p>
  
  <p>crashing and the first line of this function is GC.Collect().The function main action is sending some bytes to serial port and receiving some bytes from the </p>
  
  <p>same serial port( Both sending and received bytes are below 256 bytes) each time.GC.Collect() calling is for locating the crashing point,it'll be removed in </p>
  
  <p>release edition.</p>
  
  <p>I don't know the exact reason,but I know the exact function where the program crash.So,I have to disable GC or pause GC during the function calling.</p>
  
  <p>How can I do it ?</p>
  
  <p>The kindly response will be appreciated!</p>
  
  <p>sincerely,
  jizhiguo</p>
  
  <p>email:  jizhiguo@gmail.com</p>
  
  <p>PS:</p>
  
  <p>Environment: winxp(sp3),vs2005,.net 2.0,c#,oracle 10g</p>
  
  <p>The following is my windbg tracing info :
  *Note: the namespace of IFDMgr and NSIISys is my own creation.</p>
  
  <pre><code>--------------------------WinDbg  tracing info --------------------------
  
  Microsoft (R) Windows Debugger Version 6.11.0001.404 X86
  Copyright (c) Microsoft Corporation. All rights reserved.
  
  *** wait with pending attach
  Symbol search path is: SRV*d:\websymbols*http://msdl.microsoft.com/download/symbols;D:\jizg\NSIISys\bin\Debug;D:\Symbols
  Executable search path is: 
  ModLoad: 00400000 00512000   D:\jizg\NSIISys\bin\Debug\NSIISys.exe
  ModLoad: 7c920000 7c9b6000   C:\WINDOWS\system32\ntdll.dll
  ModLoad: 79000000 79046000   C:\WINDOWS\system32\mscoree.dll
  ModLoad: 7c800000 7c91e000   C:\WINDOWS\system32\KERNEL32.dll
  ModLoad: 77da0000 77e49000   C:\WINDOWS\system32\ADVAPI32.dll
  ModLoad: 77e50000 77ee2000   C:\WINDOWS\system32\RPCRT4.dll
  ModLoad: 77fc0000 77fd1000   C:\WINDOWS\system32\Secur32.dll
  ModLoad: 77f40000 77fb6000   C:\WINDOWS\system32\SHLWAPI.dll
  ModLoad: 77ef0000 77f39000   C:\WINDOWS\system32\GDI32.dll
  ModLoad: 77d10000 77da0000   C:\WINDOWS\system32\USER32.dll
  ModLoad: 77be0000 77c38000   C:\WINDOWS\system32\msvcrt.dll
  ModLoad: 76300000 7631d000   C:\WINDOWS\system32\IMM32.DLL
  ModLoad: 62c20000 62c29000   C:\WINDOWS\system32\LPK.DLL
  ModLoad: 73fa0000 7400b000   C:\WINDOWS\system32\USP10.dll
  ModLoad: 79e70000 7a400000   C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\mscorwks.dll
  ModLoad: 78130000 781cb000   C:\WINDOWS\WinSxS\x86_Microsoft.VC80.CRT_1fc8b3b9a1e18e3b_8.0.50727.4053_x-ww_e6967989\MSVCR80.dll
  ModLoad: 7d590000 7dd84000   C:\WINDOWS\system32\shell32.dll
  ModLoad: 77180000 77283000   C:\WINDOWS\WinSxS\x86_Microsoft.Windows.Common-Controls_6595b64144ccf1df_6.0.2600.5512_x-ww_35d4ce83\comctl32.dll
  ModLoad: 5d170000 5d20a000   C:\WINDOWS\system32\comctl32.dll
  ModLoad: 790c0000 79bb7000   C:\WINDOWS\assembly\NativeImages_v2.0.50727_32\mscorlib\6d667f19d687361886990f3ca0f49816\mscorlib.ni.dll
  ModLoad: 76990000 76acd000   C:\WINDOWS\system32\ole32.dll
  ModLoad: 5adc0000 5adf7000   C:\WINDOWS\system32\uxtheme.dll
  ModLoad: 10000000 1002f000   C:\Program Files\360safe\safemon\safemon.dll
  ModLoad: 770f0000 7717b000   C:\WINDOWS\system32\OLEAUT32.dll
  ModLoad: 3e410000 3e4f6000   C:\WINDOWS\system32\WININET.dll
  ModLoad: 00df0000 00df9000   C:\WINDOWS\system32\Normaliz.dll
  ModLoad: 43ce0000 43e12000   C:\WINDOWS\system32\urlmon.dll
  ModLoad: 3eab0000 3ec98000   C:\WINDOWS\system32\iertutil.dll
  ModLoad: 76bc0000 76bcb000   C:\WINDOWS\system32\PSAPI.DLL
  ModLoad: 71a20000 71a37000   C:\WINDOWS\system32\WS2_32.dll
  ModLoad: 71a10000 71a18000   C:\WINDOWS\system32\WS2HELP.dll
  ModLoad: 77bd0000 77bd8000   C:\WINDOWS\system32\VERSION.dll
  ModLoad: 74680000 746cc000   C:\WINDOWS\system32\MSCTF.dll
  ModLoad: 79060000 790bb000   C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\mscorjit.dll
  ModLoad: 7a440000 7abc5000   C:\WINDOWS\assembly\NativeImages_v2.0.50727_32\System\80978a322d7dd39f0a71be1251ae395a\System.ni.dll
  ModLoad: 7ade0000 7af68000   C:\WINDOWS\assembly\NativeImages_v2.0.50727_32\System.Drawing\3da96ee075bab9202626ae44c18d226c\System.Drawing.ni.dll
  ModLoad: 7afd0000 7bbae000   C:\WINDOWS\assembly\NativeImages_v2.0.50727_32
  
  \System.Windows.Forms\63406259e94d5c0ff5b79401dfe113ce\System.Windows.Forms.ni.dll
  ModLoad: 76d70000 76d92000   C:\WINDOWS\system32\apphelp.dll
  ModLoad: 73640000 7366e000   C:\WINDOWS\system32\msctfime.ime
  ModLoad: 4ae90000 4b03b000   C:\WINDOWS\WinSxS\x86_Microsoft.Windows.GdiPlus_6595b64144ccf1df_1.0.6001.22319_x-ww_f0b4c2df\gdiplus.dll
  ModLoad: 03900000 03e49000   C:\WINDOWS\system32\xpsp2res.dll
  ModLoad: 03810000 0381c000   D:\jizg\NSIISys\bin\Debug\CoreControl.dll
  ModLoad: 041b0000 041f8000   C:\WINDOWS\assembly\GAC_MSIL\mscorlib.resources\2.0.0.0_zh-CHS_b77a5c561934e089\mscorlib.resources.dll
  ModLoad: 040f0000 040f8000   D:\jizg\NSIISys\bin\Debug\DBLibrary.dll
  ModLoad: 04190000 0419e000   D:\jizg\NSIISys\bin\Debug\CRWOperator.dll
  ModLoad: 637a0000 63cd6000   C:\WINDOWS\assembly\NativeImages_v2.0.50727_32\System.Xml\773a9786013451d3baaeff003dc4230f\System.Xml.ni.dll
  ModLoad: 64890000 64981000   C:\WINDOWS\assembly\NativeImages_v2.0.50727_32\System.Configuration\b82c00e2d24305ad6cb08556e3779b75
  
  \System.Configuration.ni.dll
  ModLoad: 68000000 68036000   C:\WINDOWS\system32\rsaenh.dll
  ModLoad: 76750000 76759000   C:\WINDOWS\system32\shfolder.dll
  ModLoad: 65150000 657a3000   C:\WINDOWS\assembly\NativeImages_v2.0.50727_32\System.Data\c70731047b0022638b3f9fb158948a03\System.Data.ni.dll
  ModLoad: 64e70000 65144000   C:\WINDOWS\assembly\GAC_32\System.Data\2.0.0.0__b77a5c561934e089\System.Data.dll
  ModLoad: 765e0000 76673000   C:\WINDOWS\system32\CRYPT32.dll
  ModLoad: 76db0000 76dc2000   C:\WINDOWS\system32\MSASN1.dll
  ModLoad: 67af0000 67b8c000   C:\WINDOWS\assembly\NativeImages_v2.0.50727_32\System.Transactions\5a555c9ae6984c40157cf940bb519f7c\System.Transactions.ni.dll
  ModLoad: 67aa0000 67ae3000   C:\WINDOWS\assembly\GAC_32\System.Transactions\2.0.0.0__b77a5c561934e089\System.Transactions.dll
  ModLoad: 75e00000 75eae000   C:\WINDOWS\system32\sxs.dll
  ModLoad: 76fa0000 7701f000   C:\WINDOWS\system32\CLBCATQ.DLL
  ModLoad: 77020000 770ba000   C:\WINDOWS\system32\COMRes.dll
  ModLoad: 72d70000 72de7000   C:\Program Files\Common Files\system\ole db\oledb32.dll
  ModLoad: 75b50000 75b75000   C:\WINDOWS\system32\MSDART.DLL
  ModLoad: 76320000 76367000   C:\WINDOWS\system32\comdlg32.dll
  ModLoad: 74fa0000 74fb1000   C:\Program Files\Common Files\system\ole db\OLEDB32R.DLL
  ModLoad: 1b570000 1b5c4000   C:\WINDOWS\system32\msjetoledb40.dll
  ModLoad: 1b000000 1b170000   C:\WINDOWS\system32\msjet40.dll
  ModLoad: 1b5d0000 1b665000   C:\WINDOWS\system32\mswstr10.dll
  ModLoad: 1b2c0000 1b2cd000   C:\WINDOWS\system32\msjter40.dll
  ModLoad: 1b2d0000 1b2f6000   C:\WINDOWS\system32\MSJINT40.DLL
  ModLoad: 75690000 757cc000   C:\WINDOWS\system32\comsvcs.dll
  ModLoad: 75090000 750a4000   C:\WINDOWS\system32\colbact.DLL
  ModLoad: 75050000 75063000   C:\WINDOWS\system32\MTXCLU.DLL
  ModLoad: 71a40000 71a4b000   C:\WINDOWS\system32\WSOCK32.dll
  ModLoad: 5fdd0000 5fe25000   C:\WINDOWS\system32\NETAPI32.dll
  ModLoad: 762a0000 762b2000   C:\WINDOWS\system32\CLUSAPI.DLL
  ModLoad: 75010000 75022000   C:\WINDOWS\system32\RESUTILS.DLL
  ModLoad: 759d0000 75a7f000   C:\WINDOWS\system32\USERENV.dll
  ModLoad: 673f0000 6748d000   C:\WINDOWS\assembly\NativeImages_v2.0.50727_32\System.EnterpriseSe#\4267bd908175603006c6c90bb5d900c7
  
  \System.EnterpriseServices.ni.dll
  ModLoad: 09ce0000 09d28000   C:\WINDOWS\assembly\NativeImages_v2.0.50727_32\System.EnterpriseSe#\4267bd908175603006c6c90bb5d900c7
  
  \System.EnterpriseServices.Wrapper.dll
  ModLoad: 09d30000 09d50000   C:\WINDOWS\assembly\GAC_32\System.EnterpriseServices\2.0.0.0__b03f5f7f11d50a3a\System.EnterpriseServices.Wrapper.dll
  ModLoad: 1b800000 1b83a000   C:\WINDOWS\system32\msjtes40.dll
  ModLoad: 0f9a0000 0f9ab000   C:\WINDOWS\system32\VBAJET32.DLL
  ModLoad: 0f9c0000 0fa22000   C:\WINDOWS\system32\expsrv.dll
  ModLoad: 099a0000 099a8000   D:\jizg\NSIISys\bin\Debug\FileMgr.dll
  ModLoad: 09ae0000 09aea000   D:\jizg\NSIISys\bin\Debug\Log.dll
  ModLoad: 09af0000 09b08000   D:\jizg\NSIISys\bin\Debug\IFDMgr.dll
  ModLoad: 09b90000 09b9a000   D:\jizg\NSIISys\bin\Debug\SysUtilities.dll
  ModLoad: 719c0000 719fe000   C:\WINDOWS\system32\mswsock.dll
  ModLoad: 60fd0000 61025000   C:\WINDOWS\system32\hnetcfg.dll
  ModLoad: 71a00000 71a08000   C:\WINDOWS\System32\wshtcpip.dll
  ModLoad: 09c20000 09c29000   D:\jizg\NSIISys\bin\Debug\JC_6200D.dll
  ModLoad: 73d30000 73e2e000   C:\WINDOWS\system32\MFC42.DLL
  ModLoad: 61be0000 61bed000   C:\WINDOWS\system32\MFC42LOC.DLL
  ModLoad: 5e430000 5e5d6000   C:\WINDOWS\assembly\NativeImages_v2.0.50727_32\Microsoft.VisualBas#\1c86afc399d0fdd8e069266ffbe748d1
  
  \Microsoft.VisualBasic.ni.dll
  (1f0.b64): Break instruction exception - code 80000003 (first chance)
  eax=7ffdb000 ebx=00000001 ecx=00000002 edx=00000003 esi=00000004 edi=00000005
  eip=7c92120e esp=0ac9ffcc ebp=0ac9fff4 iopl=0         nv up ei pl zr na pe nc
  cs=001b  ss=0023  ds=0023  es=0023  fs=0038  gs=0000             efl=00000246
  ntdll!DbgBreakPoint:
  7c92120e cc              int     3
  Missing image name, possible paged-out or corrupt data.
  0:014&gt; kbn
   # ChildEBP RetAddr  Args to Child              
  00 0ac9ffc8 7c971e40 00000005 00000004 00000001 ntdll!DbgBreakPoint
  01 0ac9fff4 00000000 00000000 00000000 00000000 ntdll!DbgUiRemoteBreakin+0x2d
  0:014&gt; .loadby sos mscorwks
  0:014&gt; !clrstack
  OS Thread Id: 0xb64 (14)
  Unable to walk the managed stack. The current thread is likely not a 
  managed thread. You can run !threads to get a list of managed threads in
  the process
  0:014&gt; !threads
  ThreadCount: 7
  UnstartedThread: 0
  BackgroundThread: 6
  PendingThread: 0
  DeadThread: 0
  Hosted Runtime: no
                                        PreEmptive   GC Alloc           Lock
         ID OSID ThreadOBJ    State     GC       Context       Domain   Count APT Exception
     0    1  f98 0015b260      6020 Enabled  0155a190:0155acf8 001634d8     0 STA
     2    2  8f8 00165038      b220 Enabled  00000000:00000000 001634d8     0 MTA (Finalizer)
     7    3  268 001a11a8   200b220 Enabled  0148b480:0148c134 001634d8     0 MTA
     8    4  a6c 001b6880    80a220 Enabled  00000000:00000000 001634d8     0 MTA (Threadpool Completion Port)
    10    5  aec 001d9138   200b220 Enabled  00000000:00000000 001634d8     0 MTA
    11    6  e9c 001bc838   200b220 Enabled  014a49f8:014a6134 001634d8     0 MTA
    12    7  818 0022e0e8   200b220 Enabled  01554210:01554cf8 001634d8     0 MTA
  0:014&gt; g
  ModLoad: 0ada0000 0adca000   D:\jizg\NSIISys\bin\Debug\AghwLib_N.dll
  ModLoad: 5f400000 5f4e5000   C:\WINDOWS\system32\MFC42D.DLL
  ModLoad: 10200000 10264000   C:\WINDOWS\system32\MSVCRTD.dll
  ModLoad: 65860000 658db000   System.Data.OracleClient.dll
  ModLoad: 65860000 658db000   C:\WINDOWS\assembly\GAC_32\System.Data.OracleClient\2.0.0.0__b77a5c561934e089\System.Data.OracleClient.dll
  ModLoad: 0b060000 0b0b7000   D:\oracle\product\10.2.0\db_1\bin\oci.dll
  ModLoad: 7c340000 7c396000   C:\WINDOWS\system32\MSVCR71.dll
  ModLoad: 61c20000 61e72000   D:\oracle\product\10.2.0\db_1\bin\OraClient10.Dll
  ModLoad: 60870000 60953000   D:\oracle\product\10.2.0\db_1\bin\oracore10.dll
  ModLoad: 60a80000 60b44000   D:\oracle\product\10.2.0\db_1\bin\oranls10.dll
  ModLoad: 63690000 636a8000   D:\oracle\product\10.2.0\db_1\bin\oraunls10.dll
  ModLoad: 60eb0000 60eb7000   D:\oracle\product\10.2.0\db_1\bin\orauts.dll
  ModLoad: 76b10000 76b3a000   C:\WINDOWS\system32\WINMM.dll
  ModLoad: 636b0000 636b6000   D:\oracle\product\10.2.0\db_1\bin\oravsn10.dll
  ModLoad: 0b0c0000 0b1b2000   D:\oracle\product\10.2.0\db_1\bin\oracommon10.dll
  ModLoad: 60300000 60857000   D:\oracle\product\10.2.0\db_1\bin\orageneric10.dll
  ModLoad: 63430000 63457000   D:\oracle\product\10.2.0\db_1\bin\orasnls10.dll
  ModLoad: 0b1c0000 0b320000   D:\oracle\product\10.2.0\db_1\bin\oraxml10.dll
  ModLoad: 0b010000 0b021000   C:\WINDOWS\system32\MSVCIRT.dll
  ModLoad: 60960000 60a6d000   D:\oracle\product\10.2.0\db_1\bin\oran10.dll
  ModLoad: 62740000 6277d000   D:\oracle\product\10.2.0\db_1\bin\oranl10.dll
  ModLoad: 62790000 627a7000   D:\oracle\product\10.2.0\db_1\bin\oranldap10.dll
  ModLoad: 627f0000 628f9000   D:\oracle\product\10.2.0\db_1\bin\orannzsbb10.dll
  ModLoad: 62530000 62583000   D:\oracle\product\10.2.0\db_1\bin\oraldapclnt10.dll
  ModLoad: 62670000 6268b000   D:\oracle\product\10.2.0\db_1\bin\orancrypt10.dll
  ModLoad: 62920000 6296c000   D:\oracle\product\10.2.0\db_1\bin\oranro10.dll
  ModLoad: 626b0000 626b7000   D:\oracle\product\10.2.0\db_1\bin\oranhost10.dll
  ModLoad: 62660000 62666000   D:\oracle\product\10.2.0\db_1\bin\orancds10.dll
  ModLoad: 629c0000 629c8000   D:\oracle\product\10.2.0\db_1\bin\orantns10.dll
  ModLoad: 60b50000 60ea8000   D:\oracle\product\10.2.0\db_1\bin\orapls10.dll
  ModLoad: 0aff0000 0aff9000   D:\oracle\product\10.2.0\db_1\bin\oraslax10.dll
  ModLoad: 63080000 63284000   D:\oracle\product\10.2.0\db_1\bin\oraplp10.dll
  ModLoad: 61ed0000 61f5b000   D:\oracle\product\10.2.0\db_1\bin\orahasgen10.dll
  ModLoad: 62ab0000 62b1a000   D:\oracle\product\10.2.0\db_1\bin\oraocr10.dll
  ModLoad: 62b20000 62b60000   D:\oracle\product\10.2.0\db_1\bin\oraocrb10.dll
  ModLoad: 62980000 62990000   D:\oracle\product\10.2.0\db_1\bin\orantcp10.dll
  ModLoad: 0b320000 0b3ba000   D:\oracle\product\10.2.0\db_1\bin\orasql10.dll
  ModLoad: 0b880000 0b896000   D:\jizg\NSIISys\bin\Debug\Crwicc.dll
  (1f0.e9c): Access violation - code c0000005 (first chance)
  First chance exceptions are reported before any exception handling.
  This exception may be expected and handled.
  eax=00000000 ebx=00ba1020 ecx=000146b1 edx=0146b198 esi=013c0000 edi=00000155
  eip=79f9423a esp=0aa8ec5c ebp=0aa8ed3c iopl=0         nv up ei pl zr na pe nc
  cs=001b  ss=0023  ds=0023  es=0023  fs=003b  gs=0000             efl=00210246
  mscorwks!WKS::gc_heap::plan_phase+0x5c3:
  Missing image name, possible paged-out or corrupt data.
  79f9423a f70000000080    test    dword ptr [eax],80000000h ds:0023:00000000=????????
  *** WARNING: Unable to verify checksum for C:\WINDOWS\assembly\NativeImages_v2.0.50727_32\mscorlib\6d667f19d687361886990f3ca0f49816\mscorlib.ni.dll
  0:011&gt; kbn
   # ChildEBP RetAddr  Args to Child              
  00 0aa8ed3c 79f92d5b 00000002 7a3b8ae0 00000001 mscorwks!WKS::gc_heap::plan_phase+0x5c3
  01 0aa8ed5c 79f932d5 00000000 7a3b8bc8 00080101 mscorwks!WKS::gc_heap::gc1+0x6e
  02 0aa8ed70 79f92fea 00000002 00000001 001bc838 mscorwks!WKS::gc_heap::garbage_collect+0x253
  03 0aa8ed9c 79f3d2a9 00000002 00000000 0aa8edcc mscorwks!WKS::GCHeap::GarbageCollectGeneration+0x1a9
  04 0aa8edac 79f3d2e5 00000002 00000000 001bc838 mscorwks!WKS::GCHeap::GarbageCollectTry+0x33
  05 0aa8edcc 79f3d1a4 ffffffff 00000000 00000000 mscorwks!WKS::GCHeap::GarbageCollect+0x67
  06 0aa8ee78 79777d16 09bb99aa 09bb98b8 00e95117 mscorwks!GCInterface::CollectGeneration+0xaa
  07 0aa8efbc 79e96c8c 655f10e0 0aa8f028 0aa8f010 mscorlib_ni+0x6b7d16
  08 0aa8efdc 79eb4afa 79eb4b13 01453830 01453830 mscorwks!MethodDescCallSite::Call_RetI4+0x1c
  09 0aa8f0dc 00000000 00000000 00000000 00000000 mscorwks!SafeHandle::RunReleaseMethod+0x89
  0:011&gt; !clrstack
  OS Thread Id: 0xe9c (11)
  ESP       EIP     
  0aa8ee28 79f9423a [HelperMethodFrame: 0aa8ee28] System.GC.nativeCollectGeneration(Int32, Int32)
  0aa8ee80 79777d16 System.GC.Collect()
  0aa8ee84 09bb99aa IFDMgr.ArtcCardGeniusI200Mgr.ExecCmd(System.String, Byte[] ByRef, Int32)
  0aa8ef8c 09bb990f IFDMgr.ArtcCardGeniusI200Mgr.IFDMgr.IIFDMgr.ExecCmd(System.String, System.String ByRef, Int32)
  0aa8efc0 0b00b4f7 NSIISys.CardMachineForm.InitDF(System.String, CPUCardKit.ICPUCardOperator, CoreControl.DFInfo)
  0aa8f410 0b0087ad NSIISys.CardMachineForm.InitCard()
  0aa8f5a4 09bb8d5b NSIISys.CardMachineForm.IssueCard()
  0aa8f684 09bb8952 NSIISys.CardMachineForm.ProcessMsg(CardMachineMessage)
  0aa8f760 09bb5356 NSIISys.CardMachineForm.CardMachineMsgProcessor()
  0aa8f7c0 792d6d66 System.Threading.ThreadHelper.ThreadStart_Context(System.Object)
  0aa8f7cc 792e01ef System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object)
  0aa8f7e4 792d6ce4 System.Threading.ThreadHelper.ThreadStart()
  0aa8fa0c 79e71b4c [GCFrame: 0aa8fa0c] 
  0:011&gt; g
  (1f0.e9c): Break instruction exception - code 80000003 (first chance)
  eax=00000001 ebx=00000000 ecx=00000001 edx=0aa8e788 esi=00000000 edi=7a0979c6
  eip=7c92120e esp=0aa8e2e8 ebp=0aa8e794 iopl=0         nv up ei pl nz na po nc
  cs=001b  ss=0023  ds=0023  es=0023  fs=003b  gs=0000             efl=00200202
  ntdll!DbgBreakPoint:
  7c92120e cc              int     3
  0:011&gt; kbn
   # ChildEBP RetAddr  Args to Child              
  00 0aa8e2e4 7a096467 0aa8e788 79f7762b 54504fde ntdll!DbgBreakPoint
  01 0aa8e794 7a096796 80131506 7a0979c6 00000000 mscorwks!EEPolicy::LogFatalError+0x2b5
  02 0aa8e7ac 7a0979d1 80131506 7a0979c6 00000000 mscorwks!EEPolicy::HandleFatalError+0x4d
  03 0aa8e7d0 79f5f503 0aa8e850 5450404e 001bc838 mscorwks!CLRVectoredExceptionHandlerPhase3+0xbc
  04 0aa8e804 79f5f3a5 0aa8e850 54504072 0aa8e990 mscorwks!CLRVectoredExceptionHandlerPhase2+0x20
  05 0aa8e838 79edc2f8 0aa8e850 00004000 001bc838 mscorwks!CLRVectoredExceptionHandler+0x10a
  06 0aa8e864 79edc4f5 0aa8e974 0aa8f81c 0aa8e948 mscorwks!CPFH_RealFirstPassHandler+0x607
  07 0aa8e888 7c9232a8 0aa8e974 0aa8f81c 0aa8e990 mscorwks!COMPlusFrameHandler+0x15a
  08 0aa8e8ac 7c92327a 0aa8e974 0aa8f81c 0aa8e990 ntdll!ExecuteHandler2+0x26
  09 0aa8e95c 7c92e48a 00000000 0aa8e990 0aa8e974 ntdll!ExecuteHandler+0x24
  0a 0aa8e95c 79f9423a 00000000 0aa8e990 0aa8e974 ntdll!KiUserExceptionDispatcher+0xe
  0b 0aa8ed3c 79f92d5b 00000002 7a3b8ae0 00000001 mscorwks!WKS::gc_heap::plan_phase+0x5c3
  0c 0aa8ed5c 79f932d5 00000000 7a3b8bc8 00080101 mscorwks!WKS::gc_heap::gc1+0x6e
  0d 0aa8ed70 79f92fea 00000002 00000001 001bc838 mscorwks!WKS::gc_heap::garbage_collect+0x253
  0e 0aa8ed9c 79f3d2a9 00000002 00000000 0aa8edcc mscorwks!WKS::GCHeap::GarbageCollectGeneration+0x1a9
  0f 0aa8edac 79f3d2e5 00000002 00000000 001bc838 mscorwks!WKS::GCHeap::GarbageCollectTry+0x33
  10 0aa8edcc 79f3d1a4 ffffffff 00000000 00000000 mscorwks!WKS::GCHeap::GarbageCollect+0x67
  11 0aa8ee78 79777d16 09bb99aa 09bb98b8 00e95117 mscorwks!GCInterface::CollectGeneration+0xaa
  12 0aa8efbc 79e96c8c 655f10e0 0aa8f028 0aa8f010 mscorlib_ni+0x6b7d16
  13 0aa8efdc 79eb4afa 79eb4b13 01453830 01453830 mscorwks!MethodDescCallSite::Call_RetI4+0x1c
  0:011&gt; !clrstack
  OS Thread Id: 0xe9c (11)
  ESP       EIP     
  0aa8ee28 7c92120e [HelperMethodFrame: 0aa8ee28] System.GC.nativeCollectGeneration(Int32, Int32)
  0aa8ee80 79777d16 System.GC.Collect()
  0aa8ee84 09bb99aa IFDMgr.ArtcCardGeniusI200Mgr.ExecCmd(System.String, Byte[] ByRef, Int32)
  0aa8ef8c 09bb990f IFDMgr.ArtcCardGeniusI200Mgr.IFDMgr.IIFDMgr.ExecCmd(System.String, System.String ByRef, Int32)
  0aa8efc0 0b00b4f7 NSIISys.CardMachineForm.InitDF(System.String, CPUCardKit.ICPUCardOperator, CoreControl.DFInfo)
  0aa8f410 0b0087ad NSIISys.CardMachineForm.InitCard()
  0aa8f5a4 09bb8d5b NSIISys.CardMachineForm.IssueCard()
  0aa8f684 09bb8952 NSIISys.CardMachineForm.ProcessMsg(CardMachineMessage)
  0aa8f760 09bb5356 NSIISys.CardMachineForm.CardMachineMsgProcessor()
  0aa8f7c0 792d6d66 System.Threading.ThreadHelper.ThreadStart_Context(System.Object)
  0aa8f7cc 792e01ef System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object)
  0aa8f7e4 792d6ce4 System.Threading.ThreadHelper.ThreadStart()
  0aa8fa0c 79e71b4c [GCFrame: 0aa8fa0c] 
  0:011&gt; g
  eax=00000000 ebx=00000000 ecx=7c800000 edx=0aa8e418 esi=7c92de6e edi=80131506
  eip=7c92e514 esp=0aa8e468 ebp=0aa8e564 iopl=0         nv up ei pl zr na pe nc
  cs=001b  ss=0023  ds=0023  es=0023  fs=003b  gs=0000             efl=00200246
  ntdll!KiFastSystemCallRet:
  7c92e514 c3              ret
  0:011&gt; kbn
   # ChildEBP RetAddr  Args to Child              
  00 0aa8e464 7c92de7a 7c81cace ffffffff 80131506 ntdll!KiFastSystemCallRet
  01 0aa8e468 7c81cace ffffffff 80131506 c0000005 ntdll!NtTerminateProcess+0xc
  02 0aa8e564 7c81cb26 80131506 77e8f3b0 ffffffff KERNEL32!_ExitProcess+0x62
  03 0aa8e578 79fdc444 80131506 001bc838 0aa8e990 KERNEL32!ExitProcess+0x14
  04 0aa8e7a0 7a09679e 80131506 0aa8e7d0 7a0979d1 mscorwks!SafeExitProcess+0x157
  05 0aa8e7ac 7a0979d1 80131506 7a0979c6 00000000 mscorwks!EEPolicy::HandleFatalError+0x55
  06 0aa8e7d0 79f5f503 0aa8e850 5450404e 001bc838 mscorwks!CLRVectoredExceptionHandlerPhase3+0xbc
  07 0aa8e804 79f5f3a5 0aa8e850 54504072 0aa8e990 mscorwks!CLRVectoredExceptionHandlerPhase2+0x20
  08 0aa8e838 79edc2f8 0aa8e850 00004000 001bc838 mscorwks!CLRVectoredExceptionHandler+0x10a
  09 0aa8e864 79edc4f5 0aa8e974 0aa8f81c 0aa8e948 mscorwks!CPFH_RealFirstPassHandler+0x607
  0a 0aa8e888 7c9232a8 0aa8e974 0aa8f81c 0aa8e990 mscorwks!COMPlusFrameHandler+0x15a
  0b 0aa8e8ac 7c92327a 0aa8e974 0aa8f81c 0aa8e990 ntdll!ExecuteHandler2+0x26
  0c 0aa8e95c 7c92e48a 00000000 0aa8e990 0aa8e974 ntdll!ExecuteHandler+0x24
  0d 0aa8e95c 79f9423a 00000000 0aa8e990 0aa8e974 ntdll!KiUserExceptionDispatcher+0xe
  0e 0aa8ed3c 79f92d5b 00000002 7a3b8ae0 00000001 mscorwks!WKS::gc_heap::plan_phase+0x5c3
  0f 0aa8ed5c 79f932d5 00000000 7a3b8bc8 00080101 mscorwks!WKS::gc_heap::gc1+0x6e
  10 0aa8ed70 79f92fea 00000002 00000001 001bc838 mscorwks!WKS::gc_heap::garbage_collect+0x253
  11 0aa8ed9c 79f3d2a9 00000002 00000000 0aa8edcc mscorwks!WKS::GCHeap::GarbageCollectGeneration+0x1a9
  12 0aa8edac 79f3d2e5 00000002 00000000 001bc838 mscorwks!WKS::GCHeap::GarbageCollectTry+0x33
  13 0aa8edcc 79f3d1a4 ffffffff 00000000 00000000 mscorwks!WKS::GCHeap::GarbageCollect+0x67
  0:011&gt; !clrstack
  OS Thread Id: 0xe9c (11)
  ESP       EIP     
  0aa8ee28 7c92e514 [HelperMethodFrame: 0aa8ee28] System.GC.nativeCollectGeneration(Int32, Int32)
  0aa8ee80 79777d16 System.GC.Collect()
  0aa8ee84 09bb99aa IFDMgr.ArtcCardGeniusI200Mgr.ExecCmd(System.String, Byte[] ByRef, Int32)
  0aa8ef8c 09bb990f IFDMgr.ArtcCardGeniusI200Mgr.IFDMgr.IIFDMgr.ExecCmd(System.String, System.String ByRef, Int32)
  0aa8efc0 0b00b4f7 NSIISys.CardMachineForm.InitDF(System.String, CPUCardKit.ICPUCardOperator, CoreControl.DFInfo)
  0aa8f410 0b0087ad NSIISys.CardMachineForm.InitCard()
  0aa8f5a4 09bb8d5b NSIISys.CardMachineForm.IssueCard()
  0aa8f684 09bb8952 NSIISys.CardMachineForm.ProcessMsg(CardMachineMessage)
  0aa8f760 09bb5356 NSIISys.CardMachineForm.CardMachineMsgProcessor()
  0aa8f7c0 792d6d66 System.Threading.ThreadHelper.ThreadStart_Context(System.Object)
  0aa8f7cc 792e01ef System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object)
  0aa8f7e4 792d6ce4 System.Threading.ThreadHelper.ThreadStart()
  0aa8fa0c 79e71b4c [GCFrame: 0aa8fa0c] 
  0:011&gt; g
         ^ No runnable debuggees error in 'g'
  </code></pre>