Re: winedbg --gdb shows multiple segfaults during any app startup

[Paul Chitescu]

On Friday 10 December 2010 08:57:15 pm Ilya Basin wrote:
> In both 1.3.8 and git winedbg --gdb or plain gdb catches several
> segfaults, but if I ignore them, the program works.
>
> $ CC="ccache gcc" ./configure CFLAGS="-g -O0"
> make
> ./wine winedbg.exe --gdb notepad
>
> Wine-gdb> cont
> Continuing.
>
> Program received signal SIGSEGV, Segmentation fault.
> 0x7e942cf4 in create_alpha_bitmap (color=0x33c, mask=0x338,
> src_info=0x1319a8, color_bits=0x7ebf411c) at cursoricon.c:664 664  
>   ptr[0] = ptr[0] * alpha / 255;
> Wine-gdb>
> Continuing.
> ...
> Program exited normally.
> Wine-gdb> quit

These faults are normal, they are part of how wine more-or-less transparently 
switches access to GDI bitmaps data.

winedbg --gdb shows multiple segfaults during any app startup

[Ilya Basin]

In both 1.3.8 and git winedbg --gdb or plain gdb catches several
segfaults, but if I ignore them, the program works.

$ CC="ccache gcc" ./configure CFLAGS="-g -O0"
make
./wine winedbg.exe --gdb notepad

Wine-gdb> cont
Continuing.

Program received signal SIGSEGV, Segmentation fault.
0x7e942cf4 in create_alpha_bitmap (color=0x33c, mask=0x338, src_info=0x1319a8, 
color_bits=0x7ebf411c) at cursoricon.c:664
664 ptr[0] = ptr[0] * alpha / 255;
Wine-gdb> 
Continuing.
...
Program exited normally.
Wine-gdb> quit
[...@il wine-git]$ wine winedbg.exe --gdb notepad
001a:001b: create process 'C:\windows\system32\notepad.exe'/0x1106d0 
@0x7ed97360 (0<0>)
001a:001b: create thread I @0x7ed97360
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001a:001b: loads DLL C:\windows\system32\KERNEL32.dll @0x7b81 (0<0>)
001a:001b: loads DLL C:\windows\system32\ntdll.dll @0x7bc1 (0<0>)
001a:001b: loads DLL C:\windows\system32\advapi32.dll @0x7e82 (0<0>)
001a:001b: loads DLL C:\windows\system32\gdi32.dll @0x7e88 (0<0>)
001a:001b: loads DLL C:\windows\system32\version.dll @0x7eff (0<0>)
001a:001b: loads DLL C:\windows\system32\user32.dll @0x7e92 (0<0>)
001a:001b: loads DLL C:\windows\system32\shlwapi.dll @0x7ea7 (0<0>)
001a:001b: loads DLL C:\windows\system32\comctl32.dll @0x7e72 (0<0>)
001a:001b: loads DLL C:\windows\system32\shell32.dll @0x7ead (0<0>)
001a:001b: loads DLL C:\windows\system32\winspool.drv @0x7e6e (0<0>)
001a:001b: loads DLL C:\windows\system32\comdlg32.dll @0x7ecc (0<0>)
001a:001b: loads DLL C:\windows\system32\msvcrt.dll @0x7e66 (0<0>)
001a:001b: loads DLL C:\windows\system32\imm32.dll @0x7e20 (0<0>)
001a:001b: loads DLL C:\windows\system32\winex11.drv @0x7e39 (0<0>)
001a:001b: loads DLL C:\windows\system32\uxtheme.dll @0x7e1b (0<0>)
001a:001b: exception code=0xc005
Unknown or malformed query Attached
0x7e942cf4 in create_alpha_bitmap (color=0x318, mask=0x314, src_info=0x131808, 
color_bits=0x7ebf5854) at cursoricon.c:664
664 ptr[0] = ptr[0] * alpha / 255;
trace: 98 => 80
Wine-gdb> cont
Continuing.

Program received signal SIGSEGV, Segmentation fault.
0x7e942cf4 in create_alpha_bitmap (color=0x33c, mask=0x338, src_info=0x1319a8, 
color_bits=0x7ebf411c) at cursoricon.c:664
664 ptr[0] = ptr[0] * alpha / 255;
Wine-gdb> bt
#0  0x7e942cf4 in create_alpha_bitmap (color=0x33c, mask=0x338, 
src_info=0x1319a8, color_bits=0x7ebf411c) at cursoricon.c:664
#1  0x7e943134 in create_icon_bitmaps (bmi=0x7ebf40f4, width=32, height=32, 
color=0x33fa04, mask=0x33fa00, alpha=0x33f9fc) at cursoricon.c:730
#2  0x7e9434c5 in CURSORICON_CreateIconFromBMI (bmi=0x7ebf40f4, 
module=0x7ead, resname=0x1, rsrc=0x7eb7f130, hotspot=..., bIcon=1, 
width=32, height=32, cFlag=32768) at cursoricon.c:801
#3  0x7e9448c5 in CURSORICON_Load (hInstance=0x7ead, name=0x1, width=32, 
height=32, depth=32, fCursor=0, loadflags=32768) at cursoricon.c:1254
#4  0x7e947a31 in LoadImageW (hinst=0x7ead, name=0x1, type=1, desiredx=32, 
desiredy=32, loadflags=32768) at cursoricon.c:2292
#5  0x7e9476a9 in LoadImageA (hinst=0x7ead, name=0x1 , type=1, desiredx=32, desiredy=32, loadflags=32768) at cursoricon.c:2233
#6  0x7eafc2cc in SIC_Initialize () at iconcache.c:419
#7  0x7eb096d4 in DllMain (hinstDLL=0x7ead, fdwReason=1, fImpLoad=0x1) at 
shell32_main.c:1197
#8  0x7eb55caa in __wine_spec_dll_entry (inst=0x7ead, reason=1, 
reserved=0x1) at dll_entry.c:40
#9  0x7bc4d1a9 in call_dll_entry_point () at loader.c:137
#10 0x7bc4f472 in MODULE_InitDLL (wm=0x1107e8, reason=1, lpReserved=0x1) at 
loader.c:982
#11 0x7bc4f7f8 in process_attach (wm=0x1107e8, lpReserved=0x1) at loader.c:1071
#12 0x7bc4f7a4 in process_attach (wm=0x110620, lpReserved=0x1) at loader.c:1063
#13 0x7bc4f7a4 in process_attach (wm=0x1106a8, lpReserved=0x1) at loader.c:1063
#14 0x7bc537bf in attach_process_dlls (wm=0x1106a8) at loader.c:2539
#15 0xb7675e31 in wine_call_on_stack () at port.c:84
#16 0x7bc53d65 in LdrInitializeThunk (kernel_start=0x7b85cf7a, unknown2=0, 
unknown3=0, unknown4=0) at loader.c:2661
#17 0x7b85d8ba in __wine_kernel_init () at process.c:1166
#18 0x7bc54560 in __wine_process_init () at loader.c:2876
#19 0xb7674711 in wine_init (argc=2, argv=0xbfb87d68, error=0xbfb878ac "", 
error_size=1024) at loader.c:831
#20 0x7bf01220 in main (argc=2, argv=0xbfb87d68) at main.c:218
Wine-gdb> cont
Continuing.

Program received signal SIGSEGV, Segmentation fault.
0x7e942cf4 in create_alpha_bitmap (color=0x360, mask=0x35c, src_info=0x1319a8, 
color_bits=0x7ebf5854) at cursorico