Re: [Mono-list] mscoree.dll crash
Hi, MSVCRT is calling CorExitProcess on exit if mscoree.dll is loaded. mono.dll is hooking some mscoree.dll exports (including CorExitProcess) to itself but is not removing these hooks on unload. I suggest you to keep an extra reference to mono.dll so that it will not be unloaded until process termination. This is a bug that should definitely be fixed but I will need some time to come up with an optimal solution. Kornél fozzie wrote: The problem occurs when a separate DLL is pulled into the central executable via LoadLibrary(). On shutdown of the executable the DLL is freed via FreeLibrary() and this results in unload of mono.dll, which changes the mscoree.dll address space. The debug work directory should be set to $(OutDir) or mscorlib.dll will not be found. There is a breakpoint immediately after mono_jit_init_version() to allow examination of the address of CorExitProcess. The lib and etc directories from the Mono 2.4 install should be copied below bin\mono\. The following are copied from the install directories to the bin\debug directory. They aren't big so i kept them in the zip: libglib-2.0-0.dll libgmodule-2.0-0.dll libgthread-2.0-0.dll I tried uploading the file in both Chrome and IE 8, but it doesn't seem to work so i've stuck it at http://rapidshare.com/files/226924363/mscoree_crash.zip.html. Hopefully it helps to track this down. ___ Mono-list maillist - Mono-list@lists.ximian.com http://lists.ximian.com/mailman/listinfo/mono-list
[Mono-list] mscoree.dll crash
hi all.. I'm running Mono 2.4 on Vista 32-bit using the windows debug build with MSVC 2008. Immediately after calling mono_jit_init_version() the MSVC 2008 output window shows loading of mscoree.dll and mscorlib.dll. On terminating the application, the __crtExitProcess() detects that mscoree is loaded in memory and decides to GetProcAddress(CorExitProcess). This address remains the same since initial load of mscorlib.dll, but at the time of the crash the memory pointed to is garbage. I'm about to get into it with windbg, but thought someone else might have had a similar experience. I suspect the libraries are injected into the process since i haven't found a dependency on them in the mono libs. thanks! -- View this message in context: http://www.nabble.com/mscoree.dll-crash-tp23271960p23271960.html Sent from the Mono - General mailing list archive at Nabble.com. ___ Mono-list maillist - Mono-list@lists.ximian.com http://lists.ximian.com/mailman/listinfo/mono-list
Re: [Mono-list] mscoree.dll crash
On application shutdown, FreeLibrary() is called to unload the DLL which calls mono_jit_init_version(). The debugger shows that the final NtUnmapViewOfSection() during the FreeLibrary() processing causes unload of mono.dll and trashing of the mscoree.dll memory area holding the executable instructions for CorExitProcess(). But mscoree.dll is not unloaded for some reason so a crash occurs later when the CRT shuts down. Still digging.. -- View this message in context: http://www.nabble.com/mscoree.dll-crash-tp23271960p23283664.html Sent from the Mono - General mailing list archive at Nabble.com. ___ Mono-list maillist - Mono-list@lists.ximian.com http://lists.ximian.com/mailman/listinfo/mono-list
Re: [Mono-list] mscoree.dll crash
Could you please provide a test project (source and executable) that causes this crash? Thanks. Kornél fozzie wrote: On application shutdown, FreeLibrary() is called to unload the DLL which calls mono_jit_init_version(). The debugger shows that the final NtUnmapViewOfSection() during the FreeLibrary() processing causes unload of mono.dll and trashing of the mscoree.dll memory area holding the executable instructions for CorExitProcess(). But mscoree.dll is not unloaded for some reason so a crash occurs later when the CRT shuts down. Still digging.. ___ Mono-list maillist - Mono-list@lists.ximian.com http://lists.ximian.com/mailman/listinfo/mono-list
Re: [Mono-list] mscoree.dll crash
Hi, I've written the things in coree.c and it is hooking exported functions in mscoree.dll to functions in mono.dll. This may cause the crash you have described but I need a test case to fix that. Kornél fozzie wrote: Unfortunately the source in question is proprietary, but i'll try to create a smaller sample to reproduce the crash. For some reason, the sample teste project does not. It looks like coree.c is doing a fair bit of lifetime management :). I'm using source checked out via svn co svn://anonsvn.mono-project.com/source/branches/mono-2-4/mono with the standard Mono 2.4 install on Windows Vista 32-bit. Perhaps i'm missing some patches? ___ Mono-list maillist - Mono-list@lists.ximian.com http://lists.ximian.com/mailman/listinfo/mono-list
Re: [Mono-list] mscoree.dll crash
The problem occurs when a separate DLL is pulled into the central executable via LoadLibrary(). On shutdown of the executable the DLL is freed via FreeLibrary() and this results in unload of mono.dll, which changes the mscoree.dll address space. The debug work directory should be set to $(OutDir) or mscorlib.dll will not be found. There is a breakpoint immediately after mono_jit_init_version() to allow examination of the address of CorExitProcess. The lib and etc directories from the Mono 2.4 install should be copied below bin\mono\. The following are copied from the install directories to the bin\debug directory. They aren't big so i kept them in the zip: libglib-2.0-0.dll libgmodule-2.0-0.dll libgthread-2.0-0.dll I tried uploading the file in both Chrome and IE 8, but it doesn't seem to work so i've stuck it at http://rapidshare.com/files/226924363/mscoree_crash.zip.html. Hopefully it helps to track this down. -- View this message in context: http://www.nabble.com/mscoree.dll-crash-tp23271960p23288309.html Sent from the Mono - General mailing list archive at Nabble.com. ___ Mono-list maillist - Mono-list@lists.ximian.com http://lists.ximian.com/mailman/listinfo/mono-list
