http://bugs.winehq.org/show_bug.cgi?id=10134
--- Comment #17 from Anastasius Focht focht@gmx.net 2008-01-19 16:13:24 --- Created an attachment (id=10372) --> (http://bugs.winehq.org/attachment.cgi?id=10372) patch which fixes .net 1.1 ActivationContextBasicInformation query crash
Hello,
well the crash seems to be related to undocumented behavior when querying for activation context basic info class.
--- snip --- ... 0022:trace:actctx:RtlFindActivationContextSectionString 00000001 (null) 2 L"rsaenh.dll" 0x34f0d0 0022:trace:actctx:RtlFindActivationContextSectionString 00000001 (null) 2 L"crypt32.dll" 0x34e740 0022:trace:actctx:RtlQueryInformationActivationContext 00000000 (nil) (nil) 2 0x34f90c 48 0x34f948 0022:trace:actctx:RtlQueryInformationActivationContext 00000000 (nil) (nil) 2 0x34f928 48 0x34f95c 0022:trace:actctx:RtlQueryInformationActivationContext 00000000 (nil) (nil) 1 0x34f9b0 8 0x34f9c0 0022:trace:seh:raise_exception code=c0000005 flags=0 addr=0x7bc24531 0022:trace:seh:raise_exception info[0]=00000000 0022:trace:seh:raise_exception info[1]=c07e3e11 0022:trace:seh:raise_exception eax=c07e3e10 ebx=00000000 ecx=00000000 edx=c07e3e11 esi=006d3a20 edi=7bc30c80 0022:trace:seh:raise_exception ebp=0034f928 esp=0034f928 cs=0073 ds=007b es=007b fs=0033 gs=003b flags=00210293 ... Backtrace: =>1 0x7bc24531 check_actctx+0x11(h=0xc07e3e11) [/usr/local/src/wine-git/dlls/ntdll/actctx.c:574] in ntdll (0x0034f928) 2 0x7bc2495b RtlAddRefActivationContext+0xb(handle=0xc07e3e11) [/usr/local/src/wine-git/dlls/ntdll/actctx.c:2292] in ntdll (0x0034f930) 3 0x7b830c01 AddRefActCtx+0x11(hActCtx=0xc07e3e11) [/usr/local/src/wine-git/dlls/kernel32/actctx.c:187] in kernel32 (0x0034f940) 4 0x790598c5 in fusion (+0x198c5) (0x0034f988) 5 0x792487fb in mscorwks (+0x987fb) (0x0034f9c4) 6 0x7923d769 in mscorwks (+0x8d769) (0x0034fca8) 7 0x791c6e73 in mscorwks (+0x16e73) (0x0034fee8) 8 0x791c6ef3 in mscorwks (+0x16ef3) (0x0034ff08) ... --- snip ---
From what I've seen while debugging the crash wine actually returns the default
process activation context when it shouldn't (dlls/ntdll/actctx.c:RtlQueryInformationActivationContext() -> find_query_actctx()).
.NET crashes while doing some operations on the returned context.
The culprit seems to be calls like this:
QueryActCtxW -> RtlQueryInformationActivationContext( dwFlags = 0, hActCtx = NULL, pvSubInstance = NULL, ulInfoClass = ActivationContextBasicInformation, buf, sizeof(buf), &required_size);
Unfortunately MSDN doesn't tell anything about this case, ActivationContextBasicInformation class isn't documented at all. I wrote some tests which call this function with ActivationContextBasicInformation class and permutated args.
The function succeeds in Windows XP Sp2 (returns TRUE) and initializes the ACTIVATION_CONTEXT_BASIC_INFORMATION structure members to zero (preinit magic numbers for each struct member to detect any explicit init by internal API) and sets required size to sizeof(ACTIVATION_CONTEXT_BASIC_INFORMATION) == 8.
Attached patch fixes the problem by not returning default activation context for ActivationContextBasicInformation info class when none of dwFlags bits are set or input handle is NULL. Although the patch fixes the crash, the calls with ActivationContextBasicInformation class need some test cases to qualify for GIT ... I leave this as exercise to someone else - as usual ;-)
Regards