Process exits silently with FailFastException thrown in Thread::StaticInitialize

[mwetzko]

Hello,

with .NET 6.0.8 the following line

runtime/src/coreclr/vm/threads.cpp

Line 8218 in 916876d

_ASSERTE_ALL_BUILDS(!AreCetShadowStacksEnabled() || UseSpecialUserModeApc());

throws a FailFastException when loaded by Chrome Browser:

This does only occur on some computers where the OS does not matter (occurs on both Win10 and Win11). Having 2 PCs with Windows 11, same Chrome browser version installed, one does work, the other crashes.

It looks like coreclr.dll is not Intel CET (Control-flow Enforcement) compatible, because the PC where it is working, CET is off, the PC where it is crashing, CET is on.

I couldn't figure out the best area label to add to this issue. If you have write-permissions please help me learn by adding exactly one area label.

[mangod9]

@janvorli fyi. There was partial CET support on .NET 6, and the support is much improved in 7. Would it be possible to check this on latest .NET 7 builds?

[mwetzko]

@mangod9 thank you for your reply. Ok, I will check.