Exception c0000005 in libgl.so.1

[fozner]

This could be a wine bug but it probably shouldn't crash the driver like this, either. What happens is we get an exception in libgl.so.1 when we enable pixel shaders.

$ glxinfo | grep OpenGL && uname -r
OpenGL vendor string: NVIDIA Corporation
OpenGL renderer string: GeForce 6800/AGP/SSE2
OpenGL version string: 2.0.2 NVIDIA 87.56
OpenGL extensions:
2.6.17-rc2.4_FC5

$ wine eq2.exe

[massive amounts of debugging info stripped]
trace:loaddll:load_native_dll Loaded module L"D:\\Sony\\EverQuest II\\Miles\\mssdolby.flt" : native
trace:loaddll:load_native_dll Loaded module L"D:\\Sony\\EverQuest II\\Miles\\msssrs.flt" : native
trace:loaddll:load_builtin_dll Loaded module L"c:\\windows\\system32\\dsound.dll" : builtin
trace:loaddll:load_builtin_dll Loaded module L"c:\\windows\\system32\\lz32.dll" : builtin
trace:loaddll:load_builtin_dll Loaded module L"c:\\windows\\system32\\version.dll" : builtin
fixme:keyboard:X11DRV_ActivateKeyboardLayout 0x4090409, 0100: stub!
fixme:imm:ImmGetIMEFileNameA (0x4090409, 0x1025f72c, 1023): stub
fixme:imm:ImmGetIMEFileNameA (0x4090409, 0x1025fb30, 260): stub
fixme:d3d_shader:IWineD3DVertexShaderImpl_Generate ProgramArbHW Constant 95
fixme:d3d:IWineD3DDeviceImpl_Reset (0x123bd2a0) : stub
fixme:d3d_shader:IWineD3DVertexShaderImpl_Generate ProgramArbHW Constant 95
fixme:font:WineEngRemoveFontResourceEx :stub
fixme:font:CreateScalableFontResourceA (0,"UI/Fonts/zcal801b.TTF.fot","UI/Fonts/zcal801b.TTF",(null)): stub
fixme:font:WineEngRemoveFontResourceEx :stub
fixme:font:CreateScalableFontResourceA (0,"..\\..\\UI/Fonts/zcal801b.TTF.fot","..\\..\\UI/Fonts/zcal801b.TTF",(null)): stub
fixme:font:WineEngRemoveFontResourceEx :stub
fixme:d3d3DFmt2GLType Unhandled fmt(63,WINED3DFMT_Q8W8V8U8)
fixme:d3d3DFmt2GLType Unhandled fmt(63,WINED3DFMT_Q8W8V8U8)
fixme:d3d3DFmt2GLType Unhandled fmt(63,WINED3DFMT_Q8W8V8U8)
fixme:d3d3DFmt2GLType Unhandled fmt(63,WINED3DFMT_Q8W8V8U8)
fixme:d3d3DFmt2GLType Unhandled fmt(63,WINED3DFMT_Q8W8V8U8)
fixme:d3d3DFmt2GLType Unhandled fmt(63,WINED3DFMT_Q8W8V8U8)
wine: Unhandled page fault on read access to 0x00000c7c at address 0x4cf9be46 (thread 003b), starting debugger...
WineDbg starting on pid 0x39
fixme:dbghelp:SymLoadModule Should have successfully loaded debug information for image C:\windows\system32\wined3d.dll
fixme:dbghelp:SymLoadModule Should have successfully loaded debug information for image
Unhandled exception: page fault on read access to 0x00000c7c in 32-bit code (0x4cf9be46).
Register dump:
CS:0023 SS:002b DS:002b ES:002b FS:006b GS:0063
EIP:4cf9be46 ESP:7f193c1c EBP:7f194338 EFLAGS:00010216( - 00 -RIAP1)
EAX:00000000 EBX:7f613f70 ECX:123bc758 EDX:123bc758
ESI:00000337 EDI:00000001
Stack dump:
0x7f193c1c: 7f5c25dd 00000001 1da2f2a0 00000061
0x7f193c2c: 7f193fd9 7f194304 7f193fd9 7f608bdb
0x7f193c3c: 00000000 3ff00000 00000000 3ff00000
0x7f193c4c: 7e070f4d 00000002 00000000 00000000
0x7f193c5c: ffff0101 7f19420a 7f1942d2 7f193ed9
0x7f193c6c: 1da2f2ac 00000234 7f193e11 7f1941d8
Backtrace:
=>1 0x4cf9be46 glEnableVertexAttribArrayARB+0xa6 in libgl.so.1 (0x4cf9be46)
2 0x7f5a96f3 IWineD3DDeviceImpl_CreatePixelShader+0x83 in wined3d (0x7f5a96f3)
3 0x7f70d809 IDirect3DDevice9Impl_CreatePixelShader+0x89 in d3d9 (0x7f70d809)
fixme:dbghelp:sffip_cb NIY on 'D:\live\eq2\output\User_Optimized\Client\EverQues t2.pdb'
4 0x0088ceea in everquest2 (+0x48ceea) (0x0088ceea)
5 0x00892c12 in everquest2 (+0x492c12) (0x00892c12)
6 0x00892ce4 in everquest2 (+0x492ce4) (0x00892ce4)
7 0x007cd53a in everquest2 (+0x3cd53a) (0x007cd53a)
8 0x7f194760 (0x7f194760)
9 0x00000003 (0x00000003)
10 0x00a01d29 in everquest2 (+0x601d29) (0x00a01d29)
11 0x00000014 (0x00000014)
12 0x00000000 (0x00000000)
0x4cf9be46 glEnableVertexAttribArrayARB+0xa6 in libgl.so.1: jmp *0xc7c(%eax)
Wine-dbg>