Details
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Bug
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Resolution: Fixed
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Major
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None
Description
0.4.15-dev-3348-g22d1e7a4e41
Unhandled exception
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ExceptionCode: c0000005
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Break instruction exception - code 80000003 (first chance)
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001b:7c62ac7f cc int 3
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kd> .reload /user
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Loading User Symbols
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...............................................
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kd> ?? ExceptionInfo
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struct _EXCEPTION_POINTERS * 0x0012b48c
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+0x000 ExceptionRecord : 0x0012b5ac _EXCEPTION_RECORD
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+0x004 ContextRecord : 0x0012b5c8 _CONTEXT
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kd> .cxr 0x0012b5c8
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eax=01456d90 ebx=00000001 ecx=00000280 edx=00000014 esi=0012bce8 edi=0012b9cc
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eip=7c1b1e99 esp=0012b894 ebp=0012b8a0 iopl=0 nv up ei pl nz na po nc
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cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000 efl=00010202
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COMCTL32!STATUSBAR_GetParts+0xb9:
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001b:7c1b1e99 8b0408 mov eax,dword ptr [eax+ecx] ds:0023:01457010=????????
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kd> kp
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*** Stack trace for last set context - .thread/.cxr resets it
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# ChildEBP RetAddr
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00 0012b8a0 7c1b5082 COMCTL32!STATUSBAR_GetParts(struct STATUS_INFO * infoPtr = 0x01456a10, int num_parts = 0n32, int * parts = 0x0012bce8)+0xb9 [R:\src\dev\dll\win32\comctl32\status.c @ 436]
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01 0012b8d0 77aa063a COMCTL32!StatusWindowProc(struct HWND__ * hwnd = 0x000401e8, unsigned int msg = 0x406, unsigned long wParam = 0x20, long lParam = 0n1228008)+0x1f2 [R:\src\dev\dll\win32\comctl32\status.c @ 1188]
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02 0012b900 77a8e966 user32!CALL_EXTERN_WNDPROC+0x1a
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03 0012b9e4 77a9297b user32!IntCallWindowProcW(int IsAnsiProc = 0n0, <function> * WndProc = 0x7c1b4e90, struct _WND * pWnd = 0x00373168, struct HWND__ * hWnd = 0x000401e8, unsigned int Msg = 0x406, unsigned int wParam = 0x20, long lParam = 0n1228008)+0x656 [R:\src\dev\win32ss\user\user32\windows\message.c @ 1547]
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04 0012ba18 77a93ded user32!IntCallMessageProc(struct _WND * Wnd = 0x00373168, struct HWND__ * hWnd = 0x000401e8, unsigned int Msg = 0x406, unsigned int wParam = 0x20, long lParam = 0n1228008, int Ansi = 0n0)+0x1eb [R:\src\dev\win32ss\user\user32\windows\message.c @ 1798]
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05 0012baa0 00479d0a user32!SendMessageW(struct HWND__ * Wnd = 0x000401e8, unsigned int Msg = 0x406, unsigned int wParam = 0x20, long lParam = 0n1228008)+0x11d [R:\src\dev\win32ss\user\user32\windows\message.c @ 2403]
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WARNING: Stack unwind information not available. Following frames may be wrong.
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06 0012bd90 00457872 procexp+0x79d0a
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07 0012eb9c 0043df95 procexp+0x57872
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08 0012f8d4 0040fe72 procexp+0x3df95
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09 0012f8f8 0043c1ed procexp+0xfe72
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0a 0012f914 77aa063a procexp+0x3c1ed
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0b 0012f944 77a8e966 user32!CALL_EXTERN_WNDPROC+0x1a
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0c 0012fa28 77a945d0 user32!IntCallWindowProcW(int IsAnsiProc = 0n0, <function> * WndProc = 0x0043c1c0, struct _WND * pWnd = 0x0036f010, struct HWND__ * hWnd = 0x001700b0, unsigned int Msg = 1, unsigned int wParam = 0, long lParam = 0n1243904)+0x656 [R:\src\dev\win32ss\user\user32\windows\message.c @ 1547]
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0d 0012fac8 7c9377dc user32!User32CallWindowProcFromKernel(void * Arguments = 0x0012fae0, unsigned long ArgumentLength = 0xd0)+0x360 [R:\src\dev\win32ss\user\user32\windows\message.c @ 3005]
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0e 0012fd30 77a9b516 ntdll!KiUserCallbackDispatcher+0x2c
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0f 0012fddc 00415322 user32!CreateWindowExW(unsigned long dwExStyle = 0, wchar_t * lpClassName = 0x004fdb30 "PROCEXPL", wchar_t * lpWindowName = 0x004d8588 "Process Explorer - Sysinternals: www.sysinternals.com", unsigned long dwStyle = 0xcf0000, int x = 0n0, int y = 0n0, int nWidth = 0n780, int nHeight = 0n550, struct HWND__ * hWndParent = 0x00000000, struct HMENU__ * hMenu = 0x00000000, struct HINSTANCE__ * hInstance = 0x00400000, void * lpParam = 0x00000000)+0x3e6 [R:\src\dev\win32ss\user\user32\windows\window.c @ 609]
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10 0012fe54 0048c6eb procexp+0x15322
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11 0012ff30 004b9dde procexp+0x8c6eb
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12 0012ffc0 7c6369e4 procexp+0xb9dde
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13 0012fff0 00000000 kernel32!BaseProcessStartup(<function> * lpStartAddress = 0x004b9e49)+0x54 [R:\src\dev\dll\win32\kernel32\client\proc.c @ 463]
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kd> ?? infoPtr
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struct STATUS_INFO * 0x01456a10
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+0x000 Self : 0x000401e8 HWND__
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+0x004 Notify : 0x001700b0 HWND__
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+0x008 numParts : 5
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+0x00c height : 0x1c
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+0x010 minHeight : 0x18
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+0x014 simple : 0n0
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+0x018 hwndToolTip : (null)
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+0x01c hFont : (null)
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+0x020 hDefaultFont : 0x020a0226 HFONT__
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+0x024 clrBk : 0xff000000
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+0x028 bUnicode : 0n1
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+0x02c part0 : STATUSWINDOWPART
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+0x04c parts : 0x01456d90 STATUSWINDOWPART
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+0x050 horizontalBorder : 0n0
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+0x054 verticalBorder : 0n2
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+0x058 horizontalGap : 0n2
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Shows that SB_GETPARTS with wParam == 0x20 is called on a StatusBar with only 5 parts, which is valid according to MSDN:
https://docs.microsoft.com/en-us/windows/win32/controls/sb-getparts
wParam
Number of parts for which to retrieve coordinates. If this parameter is greater than the number of parts in the window, the message retrieves coordinates for existing parts only.